diff --git a/common/net/src/msg/compression.rs b/common/net/src/msg/compression.rs
index 0b27e5826d..e7374b6747 100644
--- a/common/net/src/msg/compression.rs
+++ b/common/net/src/msg/compression.rs
@@ -8,6 +8,7 @@ use image::{ImageBuffer, ImageDecoder, Pixel};
 use num_traits::cast::FromPrimitive;
 use serde::{Deserialize, Serialize};
 use std::{
+    f64::consts::TAU,
     fmt::Debug,
     io::{Read, Write},
     marker::PhantomData,
@@ -178,6 +179,7 @@ impl<'a, VIE: VoxelImageEncoding> VoxelImageEncoding for &'a VIE {
 
     fn finish(ws: &Self::Workspace) -> Option<Self::Output> { VIE::finish(ws) }
 }
+
 impl<'a, VIE: VoxelImageDecoding> VoxelImageDecoding for &'a VIE {
     fn start(ws: &Self::Output) -> Option<Self::Workspace> { VIE::start(ws) }
 
@@ -185,6 +187,7 @@ impl<'a, VIE: VoxelImageDecoding> VoxelImageDecoding for &'a VIE {
         VIE::get_block(ws, x, y, is_border)
     }
 }
+
 #[derive(Debug, Clone, Copy, Serialize, Deserialize)]
 pub struct QuadPngEncoding<const RESOLUTION_DIVIDER: u32>();
 
@@ -270,7 +273,7 @@ impl<const N: u32> VoxelImageEncoding for QuadPngEncoding<N> {
 /// yet)
 const fn sin(x: f64) -> f64 {
     use std::f64::consts::PI;
-    let mut x = (x - PI * 0.5) % (PI * 2.0);
+    let mut x = (x - PI * 0.5) % (TAU);
     x = if x < 0.0 { -x } else { x } - PI;
     x = if x < 0.0 { -x } else { x } - PI * 0.5;
 
diff --git a/common/src/comp/body/object.rs b/common/src/comp/body/object.rs
index b452715362..94037e3507 100644
--- a/common/src/comp/body/object.rs
+++ b/common/src/comp/body/object.rs
@@ -5,6 +5,7 @@ use crate::{
 };
 use rand::{seq::SliceRandom, thread_rng};
 use serde::{Deserialize, Serialize};
+use std::f32::consts::FRAC_PI_6;
 use vek::Vec3;
 
 make_case_elim!(
@@ -302,9 +303,7 @@ impl Body {
             Body::Bedroll => 3.0,
             Body::Bench => 100.0,
             Body::BoltFire | Body::BoltFireBig | Body::BoltNature => 1.0,
-            Body::Bomb => {
-                0.5 * IRON_DENSITY * std::f32::consts::PI / 6.0 * self.dimensions().x.powi(3)
-            },
+            Body::Bomb => 0.5 * IRON_DENSITY * FRAC_PI_6 * self.dimensions().x.powi(3),
             Body::Campfire | Body::CampfireLit => 300.0,
             Body::Carpet
             | Body::CarpetHumanRound
diff --git a/common/src/comp/body/ship.rs b/common/src/comp/body/ship.rs
index 09bae038e0..d17d317cb4 100644
--- a/common/src/comp/body/ship.rs
+++ b/common/src/comp/body/ship.rs
@@ -5,6 +5,7 @@ use crate::{
 };
 use rand::prelude::SliceRandom;
 use serde::{Deserialize, Serialize};
+use std::f32::consts::FRAC_PI_6;
 use vek::Vec3;
 
 pub const ALL_BODIES: [Body; 2] = [Body::DefaultAirship, Body::AirBalloon];
@@ -46,9 +47,8 @@ impl Body {
     }
 
     fn balloon_vol(&self) -> f32 {
-        let spheroid_vol = |equat_d: f32, polar_d: f32| -> f32 {
-            (std::f32::consts::PI / 6.0) * equat_d.powi(2) * polar_d
-        };
+        let spheroid_vol =
+            |equat_d: f32, polar_d: f32| -> f32 { FRAC_PI_6 * equat_d.powi(2) * polar_d };
         let dim = self.dimensions();
         spheroid_vol(dim.z, dim.y)
     }
@@ -57,7 +57,7 @@ impl Body {
         // height from bottom of keel to deck
         let deck_height = 10_f32;
         let dim = self.dimensions();
-        (std::f32::consts::PI / 6.0) * (deck_height * 1.5).powi(2) * dim.y
+        FRAC_PI_6 * (deck_height * 1.5).powi(2) * dim.y
     }
 
     pub fn hull_density(&self) -> Density {
diff --git a/common/src/comp/fluid_dynamics.rs b/common/src/comp/fluid_dynamics.rs
index 6e233545e3..faae2bbcbf 100644
--- a/common/src/comp/fluid_dynamics.rs
+++ b/common/src/comp/fluid_dynamics.rs
@@ -6,7 +6,7 @@ use crate::{
     util::{Dir, Plane, Projection},
 };
 use serde::{Deserialize, Serialize};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_4, FRAC_PI_6, PI};
 use vek::*;
 
 #[derive(Copy, Clone, Debug, PartialEq, Serialize, Deserialize)]
@@ -300,7 +300,7 @@ impl Body {
                 _ => {
                     let dim = self.dimensions();
                     const CD: f32 = 2.0;
-                    CD * (PI / 6.0 * dim.x * dim.y * dim.z).powf(2.0 / 3.0)
+                    CD * (FRAC_PI_6 * dim.x * dim.y * dim.z).powf(2.0 / 3.0)
                 },
             },
 
@@ -308,7 +308,7 @@ impl Body {
                 // Airships tend to use the square of the cube root of its volume for
                 // reference area
                 let dim = self.dimensions();
-                (PI / 6.0 * dim.x * dim.y * dim.z).powf(2.0 / 3.0)
+                (FRAC_PI_6 * dim.x * dim.y * dim.z).powf(2.0 / 3.0)
             },
         }
     }
@@ -323,7 +323,7 @@ impl Body {
 pub fn angle_of_attack(ori: &Ori, rel_flow_dir: &Dir) -> f32 {
     rel_flow_dir
         .projected(&Plane::from(ori.right()))
-        .map(|flow_dir| PI / 2.0 - ori.up().angle_between(flow_dir.to_vec()))
+        .map(|flow_dir| FRAC_PI_2 - ori.up().angle_between(flow_dir.to_vec()))
         .unwrap_or(0.0)
 }
 
@@ -341,7 +341,7 @@ pub fn lift_coefficient(aspect_ratio: f32, planform_area: f32, aoa: f32) -> f32
             // to just throw your hands up and return 0
             let aoa_s = aoa.signum();
             let c_l_max = lift_slope(aspect_ratio, None) * stall_angle;
-            let deg_45 = PI / 4.0;
+            let deg_45 = FRAC_PI_4;
             if aoa_abs < deg_45 {
                 // drop directly to 0.6 * max lift at stall angle
                 // then climb back to max at 45°
diff --git a/common/src/comp/ori.rs b/common/src/comp/ori.rs
index f6cc9b75c6..c6b0436983 100644
--- a/common/src/comp/ori.rs
+++ b/common/src/comp/ori.rs
@@ -2,7 +2,7 @@ use crate::util::{Dir, Plane, Projection};
 use serde::{Deserialize, Serialize};
 use specs::Component;
 use specs_idvs::IdvStorage;
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 use vek::{Quaternion, Vec2, Vec3};
 
 // Orientation
@@ -50,13 +50,13 @@ impl Ori {
     /// Look direction (as a Dir it is pedantically normalized)
     pub fn look_dir(&self) -> Dir { self.to_quat() * Dir::default() }
 
-    pub fn up(&self) -> Dir { self.pitched_up(PI / 2.0).look_dir() }
+    pub fn up(&self) -> Dir { self.pitched_up(FRAC_PI_2).look_dir() }
 
-    pub fn down(&self) -> Dir { self.pitched_down(PI / 2.0).look_dir() }
+    pub fn down(&self) -> Dir { self.pitched_down(FRAC_PI_2).look_dir() }
 
-    pub fn left(&self) -> Dir { self.yawed_left(PI / 2.0).look_dir() }
+    pub fn left(&self) -> Dir { self.yawed_left(FRAC_PI_2).look_dir() }
 
-    pub fn right(&self) -> Dir { self.yawed_right(PI / 2.0).look_dir() }
+    pub fn right(&self) -> Dir { self.yawed_right(FRAC_PI_2).look_dir() }
 
     pub fn slerp(ori1: Self, ori2: Self, s: f32) -> Self {
         Self(Quaternion::slerp(ori1.0, ori2.0, s).normalized())
@@ -329,6 +329,7 @@ impl Component for Ori {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use std::f32::consts::TAU;
 
     #[test]
     fn from_to_dir() {
@@ -341,7 +342,7 @@ mod tests {
 
         let angles = 32;
         for i in 0..angles {
-            let theta = PI * 2. * (i as f32) / (angles as f32);
+            let theta = TAU * (i as f32) / (angles as f32);
             let v = Vec3::unit_y();
             let q = Quaternion::rotation_x(theta);
             from_to(Dir::new(q * v));
diff --git a/common/src/states/glide.rs b/common/src/states/glide.rs
index 0c60945cd7..5c4d1cc959 100644
--- a/common/src/states/glide.rs
+++ b/common/src/states/glide.rs
@@ -8,7 +8,7 @@ use crate::{
     util::{Dir, Plane, Projection},
 };
 use serde::{Deserialize, Serialize};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 use vek::*;
 
 const PITCH_SLOW_TIME: f32 = 0.5;
@@ -53,7 +53,7 @@ impl Data {
         };
         let look_ori = Ori::from(data.inputs.look_dir);
         look_ori
-            .yawed_right(PI / 3.0 * look_ori.right().xy().dot(move_dir))
+            .yawed_right(FRAC_PI_3 * look_ori.right().xy().dot(move_dir))
             .pitched_up(PI * 0.04)
             .pitched_down(
                 data.inputs
@@ -150,7 +150,7 @@ impl CharacterBehavior for Data {
                         air_flow.0.magnitude_squared().min(40_f32.powi(2)) / 40_f32.powi(2);
 
                     Quaternion::rotation_3d(
-                        -PI / 2.0 * speed_factor,
+                        -FRAC_PI_2 * speed_factor,
                         ori.up()
                             .cross(air_flow.0)
                             .try_normalized()
@@ -163,7 +163,7 @@ impl CharacterBehavior for Data {
                     let accel_factor = accel.magnitude_squared().min(1.0) / 1.0;
 
                     Quaternion::rotation_3d(
-                        PI / 2.0
+                        FRAC_PI_2
                             * accel_factor
                             * if data.physics.on_ground.is_some() {
                                 -1.0
diff --git a/common/src/states/utils.rs b/common/src/states/utils.rs
index 0c8eabfff5..ef6f09b03c 100644
--- a/common/src/states/utils.rs
+++ b/common/src/states/utils.rs
@@ -16,11 +16,13 @@ use crate::{
 };
 use serde::{Deserialize, Serialize};
 use std::{
+    f32::consts::PI,
     ops::{Add, Div},
     time::Duration,
 };
 use strum_macros::Display;
 use vek::*;
+
 pub const MOVEMENT_THRESHOLD_VEL: f32 = 3.0;
 
 impl Body {
@@ -351,7 +353,7 @@ pub fn handle_orientation(data: &JoinData, update: &mut StateUpdate, efficiency:
     {
         let rate = {
             let angle = update.ori.look_dir().angle_between(*dir);
-            data.body.base_ori_rate() * efficiency * std::f32::consts::PI / angle
+            data.body.base_ori_rate() * efficiency * PI / angle
         };
         update.ori = update
             .ori
diff --git a/server/src/cmd.rs b/server/src/cmd.rs
index d61b79d3fd..239a73b95e 100644
--- a/server/src/cmd.rs
+++ b/server/src/cmd.rs
@@ -50,6 +50,7 @@ use world::util::Sampler;
 
 use crate::{client::Client, login_provider::LoginProvider, wiring};
 use scan_fmt::{scan_fmt, scan_fmt_some};
+use std::f32::consts::PI;
 use tracing::{error, info, warn};
 
 pub trait ChatCommandExt {
@@ -1149,7 +1150,7 @@ fn handle_spawn_airship(
     let mut pos = position(server, target, "target")?;
     pos.0.z += 50.0;
     const DESTINATION_RADIUS: f32 = 2000.0;
-    let angle = angle.map(|a| a * std::f32::consts::PI / 180.0);
+    let angle = angle.map(|a| a * PI / 180.0);
     let destination = angle.map(|a| {
         pos.0
             + Vec3::new(
diff --git a/server/src/rtsim/entity.rs b/server/src/rtsim/entity.rs
index 3f24371038..7d8fa683f3 100644
--- a/server/src/rtsim/entity.rs
+++ b/server/src/rtsim/entity.rs
@@ -7,7 +7,7 @@ use common::{
     terrain::TerrainGrid,
 };
 use rand_distr::{Distribution, Normal};
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 use tracing::warn;
 use world::{
     civ::{Site, Track},
@@ -156,7 +156,7 @@ impl Entity {
                                 let offset_dir = (offset_site_pos - self.pos.xy()).normalized();
                                 let dist = (offset_site_pos - self.pos.xy()).magnitude();
                                 let midpoint = self.pos.xy() + offset_dir * (dist / 2.0);
-                                let perp_dir = offset_dir.rotated_z(PI / 2.0);
+                                let perp_dir = offset_dir.rotated_z(FRAC_PI_2);
                                 let offset = normaloff.sample(&mut rng);
                                 let inbetween_pos = midpoint + (perp_dir * offset);
 
diff --git a/server/src/sys/agent.rs b/server/src/sys/agent.rs
index 702ff4c515..633eafc874 100644
--- a/server/src/sys/agent.rs
+++ b/server/src/sys/agent.rs
@@ -46,7 +46,11 @@ use specs::{
     Entities, Entity as EcsEntity, Join, ParJoin, Read, ReadExpect, ReadStorage, SystemData, World,
     Write, WriteExpect, WriteStorage,
 };
-use std::{f32::consts::PI, sync::Arc, time::Duration};
+use std::{
+    f32::consts::{FRAC_PI_2, PI},
+    sync::Arc,
+    time::Duration,
+};
 use vek::*;
 
 struct AgentData<'a> {
@@ -2328,7 +2332,7 @@ impl<'a> AgentData<'a> {
                 {
                     controller.inputs.move_dir = bearing
                         .xy()
-                        .rotated_z(thread_rng().gen_range(0.5..1.57))
+                        .rotated_z(thread_rng().gen_range(0.5..FRAC_PI_2))
                         .try_normalized()
                         .unwrap_or_else(Vec2::zero)
                         * speed;
@@ -2425,7 +2429,7 @@ impl<'a> AgentData<'a> {
                 {
                     controller.inputs.move_dir = bearing
                         .xy()
-                        .rotated_z(thread_rng().gen_range(-1.57..-0.5))
+                        .rotated_z(thread_rng().gen_range(-FRAC_PI_2..-0.5))
                         .try_normalized()
                         .unwrap_or_else(Vec2::zero)
                         * speed;
@@ -2549,7 +2553,7 @@ impl<'a> AgentData<'a> {
                 {
                     controller.inputs.move_dir = bearing
                         .xy()
-                        .rotated_z(thread_rng().gen_range(0.5..1.57))
+                        .rotated_z(thread_rng().gen_range(0.5..FRAC_PI_2))
                         .try_normalized()
                         .unwrap_or_else(Vec2::zero)
                         * speed;
diff --git a/voxygen/anim/src/biped_large/alpha.rs b/voxygen/anim/src/biped_large/alpha.rs
index 7f2ac702ed..296a75ad9d 100644
--- a/voxygen/anim/src/biped_large/alpha.rs
+++ b/voxygen/anim/src/biped_large/alpha.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::tool::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct AlphaAnimation;
 
@@ -27,7 +27,6 @@ impl Animation for AlphaAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_alpha\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_alpha")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -109,7 +108,7 @@ impl Animation for AlphaAnimation {
                 next.upper_torso.orientation = Quaternion::rotation_z(move1 * 0.5 + move2 * -0.7);
                 next.lower_torso.orientation = Quaternion::rotation_z(move1 * -0.5 + move2 * 0.7);
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move1 * -0.5 + move2 * 1.5)
+                    Quaternion::rotation_x(FRAC_PI_2 + move1 * -0.5 + move2 * 1.5)
                         * Quaternion::rotation_y(-0.2);
                 next.control_r.orientation =
                     Quaternion::rotation_x(PI / 2.2 + move1 * -0.5 + move2 * 1.5)
@@ -135,8 +134,8 @@ impl Animation for AlphaAnimation {
                 next.lower_torso.orientation = Quaternion::rotation_z(move1 * -0.2 + move2 * 0.2);
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2 + move2 * 0.8)
+                    Quaternion::rotation_x(FRAC_PI_2 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move2 * 0.8)
                     * Quaternion::rotation_y(0.0)
                     * Quaternion::rotation_z(0.0);
 
@@ -160,8 +159,8 @@ impl Animation for AlphaAnimation {
                 next.lower_torso.orientation = Quaternion::rotation_z(move1 * -0.6 + move2 * 0.9);
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2 + move2 * 0.8)
+                    Quaternion::rotation_x(FRAC_PI_2 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move2 * 0.8)
                     * Quaternion::rotation_y(0.0)
                     * Quaternion::rotation_z(0.0);
 
@@ -192,11 +191,11 @@ impl Animation for AlphaAnimation {
                             );
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(-0.15)
                                     * Quaternion::rotation_z(move1 * 0.5 + move2 * -0.6);
                             next.control_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(0.15)
                                     * Quaternion::rotation_z(move1 * -0.5 + move2 * 0.6);
                             next.head.orientation = Quaternion::rotation_x(move1 * 0.3);
@@ -222,15 +221,15 @@ impl Animation for AlphaAnimation {
                                 );
 
                                 next.hand_l.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2 * 1.5)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2 * 1.5)
                                         * Quaternion::rotation_y(move2 * 0.5)
                                         * Quaternion::rotation_z(
                                             -0.35 + move1 * -0.5 + move2 * 1.0,
                                         );
                                 next.hand_r.position = Vec3::new(14.0, 2.0, -4.0);
 
-                                next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0) * Quaternion::rotation_z(0.35);
+                                next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_3)
+                                    * Quaternion::rotation_z(0.35);
 
                                 next.shoulder_r.orientation = Quaternion::rotation_x(0.0);
                             } else {
@@ -253,12 +252,12 @@ impl Animation for AlphaAnimation {
                                 );
 
                                 next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2 * 1.5)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2 * 1.5)
                                         * Quaternion::rotation_y(move2 * -0.5)
                                         * Quaternion::rotation_z(0.35 + move1 * 0.5 + move2 * -1.0);
                                 next.hand_l.position = Vec3::new(-14.0, 2.0, -4.0);
 
-                                next.hand_l.orientation = Quaternion::rotation_x(PI / 3.0)
+                                next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_3)
                                     * Quaternion::rotation_z(-0.35);
 
                                 next.shoulder_l.orientation = Quaternion::rotation_x(0.0);
@@ -286,8 +285,10 @@ impl Animation for AlphaAnimation {
                                 * Quaternion::rotation_y(move1 * 0.3 + move2 * -0.6)
                                 * Quaternion::rotation_z(move1 * -0.8 + move2 * 1.8);
 
-                            next.control_l.orientation = Quaternion::rotation_x(1.57 + move2 * 1.0);
-                            next.control_r.orientation = Quaternion::rotation_x(1.57 + move2 * 1.0);
+                            next.control_l.orientation =
+                                Quaternion::rotation_x(FRAC_PI_2 + move2 * 1.0);
+                            next.control_r.orientation =
+                                Quaternion::rotation_x(FRAC_PI_2 + move2 * 1.0);
 
                             next.shoulder_l.orientation = Quaternion::rotation_x(-0.3)
                                 * Quaternion::rotation_y(move1 * 0.7 + move2 * -0.7);
@@ -315,10 +316,10 @@ impl Animation for AlphaAnimation {
                                 Quaternion::rotation_z(move1 * -0.2 + move2 * 0.2);
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 2.0 + move2 * 0.8)
+                                Quaternion::rotation_x(FRAC_PI_2 + move2 * 0.8)
                                     * Quaternion::rotation_y(-0.0);
                             next.control_r.orientation =
-                                Quaternion::rotation_x(PI / 2.0 + 0.2 + move2 * 0.8)
+                                Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move2 * 0.8)
                                     * Quaternion::rotation_y(0.0)
                                     * Quaternion::rotation_z(0.0);
 
@@ -373,10 +374,10 @@ impl Animation for AlphaAnimation {
                                 -s_a.grip.0 / 0.8,
                             );
 
-                            next.control_l.orientation = Quaternion::rotation_x(PI / 2.0)
+                            next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                                 * Quaternion::rotation_y(-0.0)
                                 * Quaternion::rotation_z(PI);
-                            next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2)
                                 * Quaternion::rotation_y(-1.0 + move1 * 1.0)
                                 * Quaternion::rotation_z(0.0);
 
diff --git a/voxygen/anim/src/biped_large/beam.rs b/voxygen/anim/src/biped_large/beam.rs
index 91185538ed..eea8dbc4b7 100644
--- a/voxygen/anim/src/biped_large/beam.rs
+++ b/voxygen/anim/src/biped_large/beam.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct BeamAnimation;
 
@@ -103,7 +103,7 @@ impl Animation for BeamAnimation {
                 next.jaw.orientation = Quaternion::rotation_x(0.0);
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.5);
+                    Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.5);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.5 + move1 * 0.4)
                     * Quaternion::rotation_y(0.5)
                     * Quaternion::rotation_z(move1 * 1.2 + move2shake * 0.5);
@@ -138,13 +138,13 @@ impl Animation for BeamAnimation {
                                 next.hand_l.position = Vec3::new(-14.0 + move1 * 3.0, 2.0, -4.0);
 
                                 next.hand_l.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2shake * -0.07)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2shake * -0.07)
                                         * Quaternion::rotation_y(move1 * -0.5)
                                         * Quaternion::rotation_z(-0.35 + move2shake * 0.07);
                                 next.hand_r.position = Vec3::new(14.0 + move1 - 3.0, 2.0, -4.0);
 
                                 next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2shake * 0.07)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2shake * 0.07)
                                         * Quaternion::rotation_y(move1 * -0.5)
                                         * Quaternion::rotation_z(0.35 - move2shake * 0.07);
 
@@ -158,13 +158,13 @@ impl Animation for BeamAnimation {
                                 next.hand_l.position = Vec3::new(-14.0 + move1 * 3.0, 2.0, -4.0);
 
                                 next.hand_l.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2shake * 0.07)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2shake * 0.07)
                                         * Quaternion::rotation_y(move1 * 0.5)
                                         * Quaternion::rotation_z(-0.35 + move2shake * 0.07);
                                 next.hand_r.position = Vec3::new(14.0 + move1 - 3.0, 2.0, -4.0);
 
                                 next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0 + move2shake * -0.07)
+                                    Quaternion::rotation_x(FRAC_PI_3 + move2shake * -0.07)
                                         * Quaternion::rotation_y(move1 * 0.5)
                                         * Quaternion::rotation_z(0.35 - move2shake * -0.07);
 
@@ -182,14 +182,14 @@ impl Animation for BeamAnimation {
                                 Quaternion::rotation_x(move2 * -0.5 + move2shake * -0.1);
                             next.control_l.position = Vec3::new(-0.5, 4.0, 1.0);
                             next.control_r.position = Vec3::new(-0.5, 4.0, 1.0);
-                            next.control_l.orientation = Quaternion::rotation_x(1.57);
-                            next.control_r.orientation = Quaternion::rotation_x(1.57);
+                            next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
 
                             next.weapon_l.position = Vec3::new(-12.0, -1.0, -15.0);
                             next.weapon_r.position = Vec3::new(12.0, -1.0, -15.0);
 
-                            next.weapon_l.orientation = Quaternion::rotation_x(-1.57 - 0.1);
-                            next.weapon_r.orientation = Quaternion::rotation_x(-1.57 - 0.1);
+                            next.weapon_l.orientation = Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
+                            next.weapon_r.orientation = Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
 
                             next.arm_control_r.orientation =
                                 Quaternion::rotation_x(move1 * 1.1 + move2 * -1.6)
@@ -245,8 +245,8 @@ impl Animation for BeamAnimation {
                                 Vec3::new(-6.0, 0.0 + s_a.grip.0 / 1.0, -s_a.grip.0 / 0.8);
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_z(PI);
-                            next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
+                                Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_z(PI);
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2)
                                 * Quaternion::rotation_y(-1.0);
 
                             next.control.orientation =
diff --git a/voxygen/anim/src/biped_large/beta.rs b/voxygen/anim/src/biped_large/beta.rs
index 6af78b06e6..224233db4c 100644
--- a/voxygen/anim/src/biped_large/beta.rs
+++ b/voxygen/anim/src/biped_large/beta.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::tool::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct BetaAnimation;
 
@@ -105,7 +105,7 @@ impl Animation for BetaAnimation {
                 next.lower_torso.orientation =
                     Quaternion::rotation_z(move1base * -0.5 + move2 * 0.7);
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move1 * -0.5 + move2 * 1.5)
+                    Quaternion::rotation_x(FRAC_PI_2 + move1 * -0.5 + move2 * 1.5)
                         * Quaternion::rotation_y(-0.2);
                 next.control_r.orientation =
                     Quaternion::rotation_x(PI / 2.2 + move1 * -0.5 + move2 * 1.5)
@@ -131,8 +131,8 @@ impl Animation for BetaAnimation {
                 next.lower_torso.orientation = Quaternion::rotation_z(move1 * -0.6 + move2 * 1.5);
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2 + move2 * 0.8)
+                    Quaternion::rotation_x(FRAC_PI_2 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move2 * 0.8)
                     * Quaternion::rotation_y(0.0)
                     * Quaternion::rotation_z(0.0);
 
@@ -156,8 +156,8 @@ impl Animation for BetaAnimation {
                 next.lower_torso.orientation = Quaternion::rotation_z(move1 * -1.2 + move2 * 1.0);
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2 + move2 * 0.8)
+                    Quaternion::rotation_x(FRAC_PI_2 + move2 * 0.8) * Quaternion::rotation_y(-0.0);
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move2 * 0.8)
                     * Quaternion::rotation_y(0.0)
                     * Quaternion::rotation_z(0.0);
 
@@ -188,11 +188,11 @@ impl Animation for BetaAnimation {
                             );
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(-0.15)
                                     * Quaternion::rotation_z(move1 * 0.5 + move2 * -0.6);
                             next.control_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(0.15)
                                     * Quaternion::rotation_z(move1 * -0.5 + move2 * 0.6);
                             next.head.orientation = Quaternion::rotation_x(move1 * 0.3);
@@ -223,11 +223,11 @@ impl Animation for BetaAnimation {
                             );
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(-0.15)
                                     * Quaternion::rotation_z(move1 * 0.5 + move2 * -0.6);
                             next.control_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(0.15)
                                     * Quaternion::rotation_z(move1 * -0.5 + move2 * 0.6);
                             next.head.orientation = Quaternion::rotation_x(move1 * 0.3);
diff --git a/voxygen/anim/src/biped_large/blink.rs b/voxygen/anim/src/biped_large/blink.rs
index d24bd0a605..fac133f6e3 100644
--- a/voxygen/anim/src/biped_large/blink.rs
+++ b/voxygen/anim/src/biped_large/blink.rs
@@ -3,7 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct BlinkAnimation;
 
@@ -22,7 +22,6 @@ impl Animation for BlinkAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_blink\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_blink")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, _second_tool_kind, velocity, _global_time, stage_section, acc_vel): Self::Dependency<'a>,
@@ -92,7 +91,7 @@ impl Animation for BlinkAnimation {
                     -11.0 + -s_a.grip.0 / 2.0,
                 );
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 - move1 * -0.8)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 - move1 * -0.8)
                     * Quaternion::rotation_y(-0.5 + move1 * -0.0)
                     * Quaternion::rotation_z(move1 * 0.0);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.5 + move1 * 0.7)
diff --git a/voxygen/anim/src/biped_large/charge.rs b/voxygen/anim/src/biped_large/charge.rs
index 0ace47771e..31d9a250f9 100644
--- a/voxygen/anim/src/biped_large/charge.rs
+++ b/voxygen/anim/src/biped_large/charge.rs
@@ -3,6 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
+use std::f32::consts::FRAC_PI_2;
 
 pub struct ChargeAnimation;
 
@@ -34,7 +35,8 @@ impl Animation for ChargeAnimation {
 
         let foot = ((5.0 / (0.2 + 4.8 * ((anim_time * lab * 8.0).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 8.0).sin());
-        let foote = ((5.0 / (0.5 + 4.5 * ((anim_time * lab * 8.0 + 1.57).sin()).powi(2))).sqrt())
+        let foote = ((5.0 / (0.5 + 4.5 * ((anim_time * lab * 8.0 + FRAC_PI_2).sin()).powi(2)))
+            .sqrt())
             * ((anim_time * lab * 8.0).sin());
         let stress = ((5.0 / (0.5 + 4.5 * ((anim_time * lab * 20.0).cos()).powi(2))).sqrt())
             * ((anim_time * lab * 20.0).cos());
@@ -99,7 +101,7 @@ impl Animation for ChargeAnimation {
                 next.hand_r.orientation = Quaternion::rotation_x(s_a.bhr.3);
 
                 next.hold.position = Vec3::new(0.0, -1.0, -15.2);
-                next.hold.orientation = Quaternion::rotation_x(-1.57);
+                next.hold.orientation = Quaternion::rotation_x(-FRAC_PI_2);
                 next.hold.scale = Vec3::one() * 1.0;
 
                 next.control.position = Vec3::new(
diff --git a/voxygen/anim/src/biped_large/chargemelee.rs b/voxygen/anim/src/biped_large/chargemelee.rs
index 74162d0691..ee645f114a 100644
--- a/voxygen/anim/src/biped_large/chargemelee.rs
+++ b/voxygen/anim/src/biped_large/chargemelee.rs
@@ -26,7 +26,6 @@ impl Animation for ChargeMeleeAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_chargemelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_chargemelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
diff --git a/voxygen/anim/src/biped_large/dash.rs b/voxygen/anim/src/biped_large/dash.rs
index f697264bc8..4b7f32d6f5 100644
--- a/voxygen/anim/src/biped_large/dash.rs
+++ b/voxygen/anim/src/biped_large/dash.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::tool::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct DashAnimation;
 
@@ -114,7 +114,7 @@ impl Animation for DashAnimation {
                 next.lower_torso.orientation = Quaternion::rotation_x(move2 * 0.2 + move3 * -0.2)
                     * Quaternion::rotation_z(move1 * -0.8 + move3 * 0.7);
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + move1 * -0.5 + move2 * 1.5)
+                    Quaternion::rotation_x(FRAC_PI_2 + move1 * -0.5 + move2 * 1.5)
                         * Quaternion::rotation_y(-0.2);
                 next.control_r.orientation =
                     Quaternion::rotation_x(PI / 2.2 + move1 * -0.5 + move2 * 1.5)
@@ -143,9 +143,9 @@ impl Animation for DashAnimation {
                     * Quaternion::rotation_x(move1 * 0.4 + move3 * -0.7 + footrotr * 0.1)
                     * Quaternion::rotation_z(move1 * -0.6 + move3 * 1.6);
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 + move3 * 0.3)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 + move3 * 0.3)
                     * Quaternion::rotation_y(move1 * 0.7);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2 + move3 * -0.2)
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2 + move3 * -0.2)
                     * Quaternion::rotation_y(0.0)
                     * Quaternion::rotation_z(0.0);
 
@@ -187,8 +187,8 @@ impl Animation for DashAnimation {
                                 * Quaternion::rotation_y(move1 * 0.6 + move2 * -0.6)
                                 * Quaternion::rotation_z(move3 * -0.5);
 
-                            next.control_l.orientation = Quaternion::rotation_x(1.57);
-                            next.control_r.orientation = Quaternion::rotation_x(1.57);
+                            next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
 
                             next.control.orientation =
                                 Quaternion::rotation_x(0.0) * Quaternion::rotation_y(0.0);
@@ -200,7 +200,7 @@ impl Animation for DashAnimation {
                             next.head.orientation =
                                 Quaternion::rotation_x(0.0) * Quaternion::rotation_z(move1 * -0.3);
                             next.upper_torso.orientation = Quaternion::rotation_x(move1 * -0.1)
-                                * Quaternion::rotation_z(move1 * 1.57);
+                                * Quaternion::rotation_z(move1 * FRAC_PI_2);
                             next.lower_torso.orientation = Quaternion::rotation_x(move1 * 0.1)
                                 * Quaternion::rotation_x(move1 * -0.1)
                                 * Quaternion::rotation_z(move1 * -0.2);
@@ -208,13 +208,13 @@ impl Animation for DashAnimation {
                             next.hand_l.position = Vec3::new(-14.0, 2.0 + motion * 1.5, -4.0);
 
                             next.hand_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 1.0)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 1.0)
                                     * Quaternion::rotation_y(0.0)
                                     * Quaternion::rotation_z(-0.35 + motion * -0.6);
                             next.hand_r.position = Vec3::new(14.0, 2.0 + motion * -1.5, -4.0);
 
                             next.hand_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 1.0)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 1.0)
                                     * Quaternion::rotation_y(0.0)
                                     * Quaternion::rotation_z(0.35 + motion * 0.6);
 
diff --git a/voxygen/anim/src/biped_large/equip.rs b/voxygen/anim/src/biped_large/equip.rs
index b40ebd6ff2..57e34cc62e 100644
--- a/voxygen/anim/src/biped_large/equip.rs
+++ b/voxygen/anim/src/biped_large/equip.rs
@@ -3,7 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_4, PI};
 
 pub struct EquipAnimation;
 
@@ -15,7 +15,6 @@ impl Animation for EquipAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_equip\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_equip")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, _second_tool_kind, _velocity, _global_time): Self::Dependency<'a>,
@@ -27,9 +26,9 @@ impl Animation for EquipAnimation {
         let mut next = (*skeleton).clone();
 
         let equip_slow = 1.0 + (anim_time * 12.0 + PI).cos();
-        let equip_slowa = 1.0 + (anim_time * 12.0 + PI / 4.0).cos();
-        next.hand_l.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(-1.57);
-        next.hand_r.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(1.57);
+        let equip_slowa = 1.0 + (anim_time * 12.0 + FRAC_PI_4).cos();
+        next.hand_l.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(-FRAC_PI_2);
+        next.hand_r.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(FRAC_PI_2);
         next.control.position = Vec3::new(equip_slowa * -1.5, 0.0, equip_slow * 1.5);
 
         match active_tool_kind {
@@ -49,9 +48,9 @@ impl Animation for EquipAnimation {
                 next.hand_l.position = Vec3::new(4.0, -6.0, 0.0);
                 next.hand_r.position = Vec3::new(6.0, -6.0, 6.0);
                 next.hand_l.orientation =
-                    Quaternion::rotation_y(2.2) * Quaternion::rotation_z(1.57);
+                    Quaternion::rotation_y(2.2) * Quaternion::rotation_z(FRAC_PI_2);
                 next.hand_r.orientation =
-                    Quaternion::rotation_y(2.2) * Quaternion::rotation_z(-1.57);
+                    Quaternion::rotation_y(2.2) * Quaternion::rotation_z(-FRAC_PI_2);
             },
             Some(ToolKind::Bow) => {
                 next.hand_l.position = Vec3::new(-9.0, -5.0, -8.0);
diff --git a/voxygen/anim/src/biped_large/idle.rs b/voxygen/anim/src/biped_large/idle.rs
index 366a4c33bd..7e28256f54 100644
--- a/voxygen/anim/src/biped_large/idle.rs
+++ b/voxygen/anim/src/biped_large/idle.rs
@@ -3,7 +3,10 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, PI},
+    ops::Mul,
+};
 
 pub struct IdleAnimation;
 
@@ -91,26 +94,31 @@ impl Animation for IdleAnimation {
         match active_tool_kind {
             Some(ToolKind::Bow) => {
                 next.main.position = Vec3::new(0.0, -6.0, 0.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Staff) | Some(ToolKind::Sceptre) => {
                 next.main.position = Vec3::new(-6.0, -5.0, -12.0);
-                next.main.orientation = Quaternion::rotation_y(0.6) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(0.6) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Sword) => {
                 next.main.position = Vec3::new(-10.0, -8.0, 12.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Hammer) | Some(ToolKind::Axe) => {
                 next.main.position = Vec3::new(-6.0, -8.0, 8.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
                 next.second.position = Vec3::new(6.0, -8.0, 8.0);
                 next.second.orientation =
-                    Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(1.57);
+                    Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             _ => {
                 next.main.position = Vec3::new(-2.0, -5.0, -6.0);
-                next.main.orientation = Quaternion::rotation_y(0.6) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(0.6) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
diff --git a/voxygen/anim/src/biped_large/jump.rs b/voxygen/anim/src/biped_large/jump.rs
index b998012df1..5317f38db1 100644
--- a/voxygen/anim/src/biped_large/jump.rs
+++ b/voxygen/anim/src/biped_large/jump.rs
@@ -3,7 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct JumpAnimation;
 
@@ -64,23 +64,28 @@ impl Animation for JumpAnimation {
         match active_tool_kind {
             Some(ToolKind::Bow) => {
                 next.main.position = Vec3::new(-2.0, -5.0, -6.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Staff) | Some(ToolKind::Sceptre) => {
                 next.main.position = Vec3::new(-6.0, -5.0, -12.0);
-                next.main.orientation = Quaternion::rotation_y(0.6) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(0.6) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Sword) => {
                 next.main.position = Vec3::new(-10.0, -8.0, 12.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Hammer) | Some(ToolKind::Axe) => {
                 next.main.position = Vec3::new(-10.0, -8.0, 12.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             _ => {
                 next.main.position = Vec3::new(-2.0, -5.0, -6.0);
-                next.main.orientation = Quaternion::rotation_y(0.6) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(0.6) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
diff --git a/voxygen/anim/src/biped_large/leapmelee.rs b/voxygen/anim/src/biped_large/leapmelee.rs
index 38634f8894..8b3e1c9c0c 100644
--- a/voxygen/anim/src/biped_large/leapmelee.rs
+++ b/voxygen/anim/src/biped_large/leapmelee.rs
@@ -19,7 +19,6 @@ impl Animation for LeapAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_leapmelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_leapmelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, _second_tool_kind, _velocity, _global_time, stage_section): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/biped_large/run.rs b/voxygen/anim/src/biped_large/run.rs
index 51c5829d0d..4f0e63580b 100644
--- a/voxygen/anim/src/biped_large/run.rs
+++ b/voxygen/anim/src/biped_large/run.rs
@@ -3,7 +3,10 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, PI},
+    ops::Mul,
+};
 
 pub struct RunAnimation;
 
@@ -83,10 +86,10 @@ impl Animation for RunAnimation {
         );
 
         let speedadjust = if speed < 5.0 { 0.0 } else { speed / 21.0 };
-        let shift1 = speedadjust - PI / 2.0 - speedadjust * PI * 3.0 / 4.0;
-        let shift2 = speedadjust + PI / 2.0 + speedadjust * PI / 2.0;
-        let shift3 = speedadjust + PI / 4.0 - speedadjust * PI / 4.0;
-        let shift4 = speedadjust - PI * 3.0 / 4.0 + speedadjust * PI / 2.0;
+        let shift1 = speedadjust - FRAC_PI_2 - speedadjust * PI * 3.0 / 4.0;
+        let shift2 = speedadjust + FRAC_PI_2 + speedadjust * FRAC_PI_2;
+        let shift3 = speedadjust + FRAC_PI_4 - speedadjust * FRAC_PI_4;
+        let shift4 = speedadjust - PI * 3.0 / 4.0 + speedadjust * FRAC_PI_2;
 
         //FL
         let foot1a = (acc_vel * lab * speedmult + 0.0 + canceler * 0.05 + shift1).sin();
diff --git a/voxygen/anim/src/biped_large/shoot.rs b/voxygen/anim/src/biped_large/shoot.rs
index 2b9428d06f..502b7572ac 100644
--- a/voxygen/anim/src/biped_large/shoot.rs
+++ b/voxygen/anim/src/biped_large/shoot.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::tool::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct ShootAnimation;
 
@@ -114,7 +114,7 @@ impl Animation for ShootAnimation {
                     * Quaternion::rotation_z(move1 * 0.25);
                 next.jaw.orientation = Quaternion::rotation_x(move1 * -0.5);
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 + move1 * 0.5)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 + move1 * 0.5)
                     * Quaternion::rotation_y(move1 * -0.4);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.5 + move1 * 0.5)
                     * Quaternion::rotation_y(0.5)
@@ -160,7 +160,7 @@ impl Animation for ShootAnimation {
                 );
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(move1 * 0.2 + PI / 2.0 + move2 * 0.4)
+                    Quaternion::rotation_x(move1 * 0.2 + FRAC_PI_2 + move2 * 0.4)
                         * Quaternion::rotation_y(-0.2);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.2 + move1 * 0.4)
                     * Quaternion::rotation_y(0.4)
@@ -211,11 +211,11 @@ impl Animation for ShootAnimation {
                             );
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(-0.15)
                                     * Quaternion::rotation_z(move1 * 0.5);
                             next.control_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 0.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 0.5)
                                     * Quaternion::rotation_y(0.15)
                                     * Quaternion::rotation_z(move1 * -0.5);
                             next.head.orientation = Quaternion::rotation_x(move1 * -0.3);
@@ -256,10 +256,10 @@ impl Animation for ShootAnimation {
                                     * Quaternion::rotation_z(twist);
 
                             next.arm_control_r.orientation =
-                                Quaternion::rotation_x(move1 * PI / 2.0)
-                                    * Quaternion::rotation_y(move1 * -PI / 2.0 + move2 * 2.5);
-                            //* Quaternion::rotation_y(move1 * -PI/2.0)
-                            //* Quaternion::rotation_z(move1 * -PI/2.0);
+                                Quaternion::rotation_x(move1 * FRAC_PI_2)
+                                    * Quaternion::rotation_y(move1 * -FRAC_PI_2 + move2 * 2.5);
+                            //* Quaternion::rotation_y(move1 * -FRAC_PI_2)
+                            //* Quaternion::rotation_z(move1 * -FRAC_PI_2);
                             next.arm_control_r.position =
                                 Vec3::new(0.0, move1 * 10.0 + move2 * -10.0, 0.0);
                         },
@@ -277,8 +277,8 @@ impl Animation for ShootAnimation {
                                 Vec3::new(-7.0, 0.0 + s_a.grip.0 / 1.0, -s_a.grip.0 / 0.8);
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_z(PI);
-                            next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
+                                Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_z(PI);
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2)
                                 * Quaternion::rotation_y(-1.0)
                                 * Quaternion::rotation_z(0.0);
 
@@ -317,9 +317,10 @@ impl Animation for ShootAnimation {
                                 s_a.shoulder.1,
                                 s_a.shoulder.2,
                             );
-                            next.shoulder_r.orientation = Quaternion::rotation_y(move1 * -PI / 2.0)
-                                * Quaternion::rotation_x(move2 * 2.0)
-                                * Quaternion::rotation_z(move1 * -PI / 2.0);
+                            next.shoulder_r.orientation =
+                                Quaternion::rotation_y(move1 * -FRAC_PI_2)
+                                    * Quaternion::rotation_x(move2 * 2.0)
+                                    * Quaternion::rotation_z(move1 * -FRAC_PI_2);
 
                             next.hand_r.position = Vec3::new(
                                 -s_a.grip.1 + move1 * -2.0 + move2 * 8.0,
diff --git a/voxygen/anim/src/biped_large/spin.rs b/voxygen/anim/src/biped_large/spin.rs
index b5357f4738..c0b39e0c73 100644
--- a/voxygen/anim/src/biped_large/spin.rs
+++ b/voxygen/anim/src/biped_large/spin.rs
@@ -3,7 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, TAU};
 
 pub struct SpinAnimation;
 
@@ -42,7 +42,7 @@ impl Animation for SpinAnimation {
         let foot = ((5.0 / (1.1 + 3.9 * ((anim_time * lab * 10.32).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 10.32).sin());
 
-        let decel = (anim_time * 16.0 * lab).min(PI / 2.0).sin();
+        let decel = (anim_time * 16.0 * lab).min(FRAC_PI_2).sin();
 
         let spin = (anim_time * 2.8 * lab).sin();
         let spinhalf = (anim_time * 1.4 * lab).sin();
@@ -67,7 +67,7 @@ impl Animation for SpinAnimation {
             );
             next.control.orientation = Quaternion::rotation_x(-0.5 + s_a.sc.3 + movement1 * -1.2)
                 * Quaternion::rotation_y(s_a.sc.4 - 0.6 + movement1 * 1.0)
-                * Quaternion::rotation_z(s_a.sc.5 + 0.1 + movement1 * 1.57);
+                * Quaternion::rotation_z(s_a.sc.5 + 0.1 + movement1 * FRAC_PI_2);
             next.head.position = Vec3::new(
                 0.0 + 2.0 + movement2 * -2.0,
                 2.0 + movement2 * -2.0 + s_a.head.0,
@@ -87,7 +87,7 @@ impl Animation for SpinAnimation {
             next.head.orientation = Quaternion::rotation_y(movement1 * 0.1 - movement2 * -0.1)
                 * Quaternion::rotation_z(1.07 + movement1 * 0.4 + movement2 * -1.5);
 
-            next.torso.orientation = Quaternion::rotation_z(movement2 * 6.28);
+            next.torso.orientation = Quaternion::rotation_z(movement2 * TAU);
         }
 
         if let Some(ToolKind::Axe | ToolKind::Hammer | ToolKind::Dagger) = active_tool_kind {
diff --git a/voxygen/anim/src/biped_large/spinmelee.rs b/voxygen/anim/src/biped_large/spinmelee.rs
index 73a242d3a5..267c4abdd1 100644
--- a/voxygen/anim/src/biped_large/spinmelee.rs
+++ b/voxygen/anim/src/biped_large/spinmelee.rs
@@ -3,7 +3,7 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct SpinMeleeAnimation;
 
@@ -22,7 +22,6 @@ impl Animation for SpinMeleeAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_spinmelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_spinmelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, _second_tool_kind, velocity, _global_time, stage_section, acc_vel): Self::Dependency<'a>,
@@ -101,7 +100,7 @@ impl Animation for SpinMeleeAnimation {
                     -11.0 + -s_a.grip.0 / 2.0 + move1 * 8.0,
                 );
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 - move1 * 0.2)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 - move1 * 0.2)
                     * Quaternion::rotation_y(-0.5 + move1 * 0.3)
                     * Quaternion::rotation_z(move1 * 0.0);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.5 + move1 * 0.0)
diff --git a/voxygen/anim/src/biped_large/spritesummon.rs b/voxygen/anim/src/biped_large/spritesummon.rs
index 9a7e918e8e..ea87104aca 100644
--- a/voxygen/anim/src/biped_large/spritesummon.rs
+++ b/voxygen/anim/src/biped_large/spritesummon.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct SpriteSummonAnimation;
 
@@ -104,8 +104,8 @@ impl Animation for SpriteSummonAnimation {
                             );
 
                             next.control_l.orientation =
-                                Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_z(PI);
-                            next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
+                                Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_z(PI);
+                            next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2)
                                 * Quaternion::rotation_y(-1.0)
                                 * Quaternion::rotation_z(0.0);
 
diff --git a/voxygen/anim/src/biped_large/stunned.rs b/voxygen/anim/src/biped_large/stunned.rs
index 7ca21c4246..468a547ab3 100644
--- a/voxygen/anim/src/biped_large/stunned.rs
+++ b/voxygen/anim/src/biped_large/stunned.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::tool::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct StunnedAnimation;
 
@@ -64,7 +64,7 @@ impl Animation for StunnedAnimation {
 
         let short = (acc_vel * lab).sin() * speednorm;
 
-        let shortalt = (anim_time * lab * 16.0 + PI / 2.0).sin();
+        let shortalt = (anim_time * lab * 16.0 + FRAC_PI_2).sin();
         next.second.position = Vec3::new(0.0, 0.0, 0.0);
         next.second.orientation = Quaternion::rotation_x(0.0);
         if s_a.beast {
@@ -138,7 +138,7 @@ impl Animation for StunnedAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.2);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.2);
                     next.control_r.orientation =
                         Quaternion::rotation_x(PI / 2.2) * Quaternion::rotation_y(0.2);
 
@@ -156,7 +156,7 @@ impl Animation for StunnedAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.2);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.2);
                     next.control_r.orientation =
                         Quaternion::rotation_x(PI / 2.2) * Quaternion::rotation_y(0.2);
 
@@ -175,8 +175,8 @@ impl Animation for StunnedAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.0);
-                    next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.0);
+                    next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2);
 
                     next.control.orientation =
                         Quaternion::rotation_x(-1.0 + short * 0.2) * Quaternion::rotation_y(-1.8);
@@ -192,7 +192,7 @@ impl Animation for StunnedAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.5);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.5);
                     next.control_r.orientation = Quaternion::rotation_x(PI / 2.5)
                         * Quaternion::rotation_y(0.5)
                         * Quaternion::rotation_z(0.0);
@@ -207,10 +207,10 @@ impl Animation for StunnedAnimation {
                                 next.control_l.position = Vec3::new(-9.0, 19.0, -13.0);
                                 next.control_r.position = Vec3::new(9.0, 19.0, -13.0);
 
-                                next.control_l.orientation = Quaternion::rotation_x(PI / 3.0)
+                                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_3)
                                     * Quaternion::rotation_y(-0.15);
-                                next.control_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0) * Quaternion::rotation_y(0.15);
+                                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_3)
+                                    * Quaternion::rotation_y(0.15);
                             },
                             "Tidal Warrior" => {
                                 next.head.orientation = Quaternion::rotation_x(movement1 * -2.0);
@@ -221,10 +221,10 @@ impl Animation for StunnedAnimation {
                                 next.hand_l.position = Vec3::new(-14.0, 2.0, -4.0);
                                 next.hand_r.position = Vec3::new(14.0, 2.0, -4.0);
 
-                                next.hand_l.orientation = Quaternion::rotation_x(PI / 3.0)
+                                next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_3)
                                     * Quaternion::rotation_z(-0.35);
-                                next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0) * Quaternion::rotation_z(0.35);
+                                next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_3)
+                                    * Quaternion::rotation_z(0.35);
                             },
                             "Beast Claws" => {
                                 next.shoulder_l.position =
@@ -403,11 +403,13 @@ impl Animation for StunnedAnimation {
                                 next.weapon_l.position = Vec3::new(-12.0, -6.0, -18.0);
                                 next.weapon_r.position = Vec3::new(12.0, -6.0, -18.0);
 
-                                next.weapon_l.orientation = Quaternion::rotation_x(-1.57 - 0.1);
-                                next.weapon_r.orientation = Quaternion::rotation_x(-1.57 - 0.1);
+                                next.weapon_l.orientation =
+                                    Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
+                                next.weapon_r.orientation =
+                                    Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
 
-                                next.control_l.orientation = Quaternion::rotation_x(1.57);
-                                next.control_r.orientation = Quaternion::rotation_x(1.57);
+                                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
+                                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
 
                                 next.control.orientation =
                                     Quaternion::rotation_x(0.0) * Quaternion::rotation_y(0.0);
diff --git a/voxygen/anim/src/biped_large/summon.rs b/voxygen/anim/src/biped_large/summon.rs
index c3a5952dcd..1e91198656 100644
--- a/voxygen/anim/src/biped_large/summon.rs
+++ b/voxygen/anim/src/biped_large/summon.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{AbilitySpec, ToolKind},
     states::utils::StageSection,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_3, PI};
 
 pub struct SummonAnimation;
 
@@ -26,7 +26,6 @@ impl Animation for SummonAnimation {
     const UPDATE_FN: &'static [u8] = b"biped_large_summon\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "biped_large_summon")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -111,7 +110,7 @@ impl Animation for SummonAnimation {
                     -11.0 + -s_a.grip.0 / 2.0 + move1 * 15.0 + move2 * -12.0,
                 );
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 - move1 * 0.2)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 - move1 * 0.2)
                     * Quaternion::rotation_y(-0.5 + move2 * -0.4)
                     * Quaternion::rotation_z(move1 * 0.0);
                 next.control_r.orientation = Quaternion::rotation_x(PI / 2.5 + move1 * 0.2)
@@ -165,11 +164,11 @@ impl Animation for SummonAnimation {
                             );
 
                             next.hand_l.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 1.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 1.5)
                                     * Quaternion::rotation_y(-move1 * 0.7 + move2 * 0.2)
                                     * Quaternion::rotation_z(-0.35);
                             next.hand_r.orientation =
-                                Quaternion::rotation_x(PI / 3.0 + move1 * 1.5)
+                                Quaternion::rotation_x(FRAC_PI_3 + move1 * 1.5)
                                     * Quaternion::rotation_y(move1 * 0.7 + move2 * 0.2)
                                     * Quaternion::rotation_z(0.35);
                             next.leg_l.position = Vec3::new(-s_a.leg.0, s_a.leg.1, s_a.leg.2);
diff --git a/voxygen/anim/src/biped_large/wield.rs b/voxygen/anim/src/biped_large/wield.rs
index ef94cd66e8..f1c20179e1 100644
--- a/voxygen/anim/src/biped_large/wield.rs
+++ b/voxygen/anim/src/biped_large/wield.rs
@@ -3,7 +3,10 @@ use super::{
     BipedLargeSkeleton, SkeletonAttr,
 };
 use common::comp::item::tool::{AbilitySpec, ToolKind};
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_3, PI},
+    ops::Mul,
+};
 
 pub struct WieldAnimation;
 
@@ -90,7 +93,7 @@ impl Animation for WieldAnimation {
 
         let short = (acc_vel * lab).sin() * speednorm;
 
-        let shortalt = (anim_time * lab * 16.0 + PI / 2.0).sin();
+        let shortalt = (anim_time * lab * 16.0 + FRAC_PI_2).sin();
         next.second.position = Vec3::new(0.0, 0.0, 0.0);
         next.second.orientation = Quaternion::rotation_x(0.0);
 
@@ -174,7 +177,7 @@ impl Animation for WieldAnimation {
                     next.second.scale = Vec3::one() * 0.0;
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.2);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.2);
                     next.control_r.orientation =
                         Quaternion::rotation_x(PI / 2.2) * Quaternion::rotation_y(0.2);
 
@@ -192,7 +195,7 @@ impl Animation for WieldAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.2);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.2);
                     next.control_r.orientation = Quaternion::rotation_x(PI / 2.2)
                         * Quaternion::rotation_y(0.2)
                         * Quaternion::rotation_z(0.0);
@@ -212,8 +215,8 @@ impl Animation for WieldAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.0);
-                    next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.0);
+                    next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + 0.2)
                         * Quaternion::rotation_y(0.0)
                         * Quaternion::rotation_z(0.0);
 
@@ -231,7 +234,7 @@ impl Animation for WieldAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.5);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.5);
                     next.control_r.orientation = Quaternion::rotation_x(PI / 2.5)
                         * Quaternion::rotation_y(0.5)
                         * Quaternion::rotation_z(0.0);
@@ -246,19 +249,19 @@ impl Animation for WieldAnimation {
                                 next.control_l.position = Vec3::new(-9.0, 19.0, -13.0);
                                 next.control_r.position = Vec3::new(9.0, 19.0, -13.0);
 
-                                next.control_l.orientation = Quaternion::rotation_x(PI / 3.0)
+                                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_3)
                                     * Quaternion::rotation_y(-0.15);
-                                next.control_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0) * Quaternion::rotation_y(0.15);
+                                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_3)
+                                    * Quaternion::rotation_y(0.15);
                             },
                             "Tidal Warrior" => {
                                 next.hand_l.position = Vec3::new(-14.0, 2.0, -4.0);
                                 next.hand_r.position = Vec3::new(14.0, 2.0, -4.0);
 
-                                next.hand_l.orientation = Quaternion::rotation_x(PI / 3.0)
+                                next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_3)
                                     * Quaternion::rotation_z(-0.35);
-                                next.hand_r.orientation =
-                                    Quaternion::rotation_x(PI / 3.0) * Quaternion::rotation_z(0.35);
+                                next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_3)
+                                    * Quaternion::rotation_z(0.35);
                             },
                             "Beast Claws" => {
                                 next.shoulder_l.position =
@@ -438,10 +441,12 @@ impl Animation for WieldAnimation {
                                 next.weapon_l.position = Vec3::new(-12.0, -6.0, -18.0);
                                 next.weapon_r.position = Vec3::new(12.0, -6.0, -18.0);
 
-                                next.weapon_l.orientation = Quaternion::rotation_x(-1.57 - 0.1);
-                                next.weapon_r.orientation = Quaternion::rotation_x(-1.57 - 0.1);
+                                next.weapon_l.orientation =
+                                    Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
+                                next.weapon_r.orientation =
+                                    Quaternion::rotation_x(-FRAC_PI_2 - 0.1);
 
-                                next.control_l.orientation = Quaternion::rotation_x(1.57);
+                                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
                                 next.control_r.orientation = Quaternion::rotation_x(1.57);
 
                                 next.control.orientation =
@@ -481,10 +486,11 @@ impl Animation for WieldAnimation {
                                 );
 
                                 next.control_l.orientation =
-                                    Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_z(PI);
-                                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + 0.2)
-                                    * Quaternion::rotation_y(-1.0)
-                                    * Quaternion::rotation_z(0.0);
+                                    Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_z(PI);
+                                next.control_r.orientation =
+                                    Quaternion::rotation_x(FRAC_PI_2 + 0.2)
+                                        * Quaternion::rotation_y(-1.0)
+                                        * Quaternion::rotation_z(0.0);
 
                                 next.control.orientation =
                                     Quaternion::rotation_x(-1.4) * Quaternion::rotation_y(-2.8);
@@ -504,13 +510,13 @@ impl Animation for WieldAnimation {
                                         Vec3::new(-s_a.hand.0, s_a.hand.1, s_a.hand.2);
                                     next.hand_l.orientation =
                                         Quaternion::rotation_x(1.4 + slow * 0.1)
-                                            * Quaternion::rotation_z(-PI / 2.0);
+                                            * Quaternion::rotation_z(-FRAC_PI_2);
 
                                     next.hand_r.position =
                                         Vec3::new(s_a.hand.0, s_a.hand.1, s_a.hand.2);
                                     next.hand_r.orientation =
                                         Quaternion::rotation_x(1.4 - slow * 0.1)
-                                            * Quaternion::rotation_z(PI / 2.0);
+                                            * Quaternion::rotation_z(FRAC_PI_2);
 
                                     next.shoulder_l.position =
                                         Vec3::new(-s_a.shoulder.0, s_a.shoulder.1, s_a.shoulder.2);
diff --git a/voxygen/anim/src/biped_small/alpha.rs b/voxygen/anim/src/biped_small/alpha.rs
index 69dc4b0f10..bb0d6117f4 100644
--- a/voxygen/anim/src/biped_small/alpha.rs
+++ b/voxygen/anim/src/biped_small/alpha.rs
@@ -3,7 +3,7 @@ use super::{
     BipedSmallSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct AlphaAnimation;
 
@@ -49,7 +49,7 @@ impl Animation for AlphaAnimation {
         let speed = Vec2::<f32>::from(velocity).magnitude();
 
         let fast = (anim_time * 10.0).sin();
-        let fastalt = (anim_time * 10.0 + PI / 2.0).sin();
+        let fastalt = (anim_time * 10.0 + FRAC_PI_2).sin();
 
         let speednorm = speed / 9.4;
         let speednormcancel = 1.0 - speednorm;
diff --git a/voxygen/anim/src/biped_small/dash.rs b/voxygen/anim/src/biped_small/dash.rs
index da2077dccb..3c621942cb 100644
--- a/voxygen/anim/src/biped_small/dash.rs
+++ b/voxygen/anim/src/biped_small/dash.rs
@@ -3,7 +3,7 @@ use super::{
     BipedSmallSkeleton, SkeletonAttr,
 };
 use common::states::utils::StageSection;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct DashAnimation;
 
@@ -47,7 +47,7 @@ impl Animation for DashAnimation {
         let speed = Vec2::<f32>::from(velocity).magnitude();
 
         let fast = (anim_time * 10.0).sin();
-        let fastalt = (anim_time * 10.0 + PI / 2.0).sin();
+        let fastalt = (anim_time * 10.0 + FRAC_PI_2).sin();
 
         let speednorm = speed / 9.4;
         let speednormcancel = 1.0 - speednorm;
diff --git a/voxygen/anim/src/biped_small/idle.rs b/voxygen/anim/src/biped_small/idle.rs
index dde4419613..f893bb9e87 100644
--- a/voxygen/anim/src/biped_small/idle.rs
+++ b/voxygen/anim/src/biped_small/idle.rs
@@ -2,6 +2,7 @@ use super::{
     super::{vek::*, Animation},
     BipedSmallSkeleton, SkeletonAttr,
 };
+use std::f32::consts::FRAC_PI_2;
 
 pub struct IdleAnimation;
 
@@ -36,7 +37,7 @@ impl Animation for IdleAnimation {
             Vec3::new(0.0, s_a.chest.0, s_a.chest.1 + slow * 0.3) * s_a.scaler / 11.0;
         next.pants.position = Vec3::new(0.0, s_a.pants.0, s_a.pants.1);
         next.main.position = Vec3::new(2.0, -3.0, -3.0);
-        next.main.orientation = Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(1.57);
+        next.main.orientation = Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(FRAC_PI_2);
 
         next.tail.position = Vec3::new(0.0, s_a.tail.0, s_a.tail.1);
         next.hand_l.position = Vec3::new(-s_a.hand.0, s_a.hand.1, s_a.hand.2 + slow * -0.1);
diff --git a/voxygen/anim/src/biped_small/run.rs b/voxygen/anim/src/biped_small/run.rs
index 560b32fd38..e52b86f459 100644
--- a/voxygen/anim/src/biped_small/run.rs
+++ b/voxygen/anim/src/biped_small/run.rs
@@ -2,7 +2,10 @@ use super::{
     super::{vek::*, Animation},
     BipedSmallSkeleton, SkeletonAttr,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, PI},
+    ops::Mul,
+};
 
 pub struct RunAnimation;
 
@@ -51,7 +54,7 @@ impl Animation for RunAnimation {
         let footvertsl = (acc_vel * 1.4 * lab).sin();
         let footvertsr = (acc_vel * 1.4 * lab + PI * 0.5).sin();
 
-        let shortalt = (acc_vel * lab * 1.4 + PI / 2.0).sin();
+        let shortalt = (acc_vel * lab * 1.4 + FRAC_PI_2).sin();
 
         let short = ((5.0 / (1.5 + 3.5 * ((acc_vel * lab * 1.4).sin()).powi(2))).sqrt())
             * ((acc_vel * lab * 1.4).sin());
diff --git a/voxygen/anim/src/biped_small/shoot.rs b/voxygen/anim/src/biped_small/shoot.rs
index 4f5c52a20b..d290057689 100644
--- a/voxygen/anim/src/biped_small/shoot.rs
+++ b/voxygen/anim/src/biped_small/shoot.rs
@@ -3,7 +3,7 @@ use super::{
     BipedSmallSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 
 pub struct ShootAnimation;
 
@@ -49,7 +49,7 @@ impl Animation for ShootAnimation {
         let speed = Vec2::<f32>::from(velocity).magnitude();
 
         let fast = (anim_time * 10.0).sin();
-        let fastalt = (anim_time * 10.0 + PI / 2.0).sin();
+        let fastalt = (anim_time * 10.0 + FRAC_PI_2).sin();
 
         let speednorm = speed / 9.4;
         let speednormcancel = 1.0 - speednorm;
@@ -104,8 +104,8 @@ impl Animation for ShootAnimation {
                 );
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.3);
-                next.control_r.orientation = Quaternion::rotation_x(PI / 2.0 + s_a.grip.0 * 0.2)
+                    Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.3);
+                next.control_r.orientation = Quaternion::rotation_x(FRAC_PI_2 + s_a.grip.0 * 0.2)
                     * Quaternion::rotation_y(0.5 + s_a.grip.0 * 0.2);
 
                 next.control.orientation = Quaternion::rotation_x(-0.3 + move1abs * 0.4)
@@ -133,11 +133,11 @@ impl Animation for ShootAnimation {
                     -2.0 + -s_a.grip.2 / 2.5 + s_a.grip.0 * -2.0 + move1abs * 5.0,
                 );
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 + move1abs * 0.8)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 + move1abs * 0.8)
                     * Quaternion::rotation_y(-0.3)
                     * Quaternion::rotation_z(-0.3);
                 next.control_r.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + s_a.grip.0 * 0.2 + move1abs * 0.8)
+                    Quaternion::rotation_x(FRAC_PI_2 + s_a.grip.0 * 0.2 + move1abs * 0.8)
                         * Quaternion::rotation_y(-0.4 + s_a.grip.0 * 0.2 + move1abs * 0.8)
                         * Quaternion::rotation_z(-0.0);
 
diff --git a/voxygen/anim/src/biped_small/stunned.rs b/voxygen/anim/src/biped_small/stunned.rs
index 437fc92753..c23dab8592 100644
--- a/voxygen/anim/src/biped_small/stunned.rs
+++ b/voxygen/anim/src/biped_small/stunned.rs
@@ -3,7 +3,7 @@ use super::{
     BipedSmallSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, states::utils::StageSection};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct StunnedAnimation;
 
@@ -119,9 +119,9 @@ impl Animation for StunnedAnimation {
                     );
 
                     next.control_l.orientation =
-                        Quaternion::rotation_x(PI / 2.0) * Quaternion::rotation_y(-0.3);
+                        Quaternion::rotation_x(FRAC_PI_2) * Quaternion::rotation_y(-0.3);
                     next.control_r.orientation =
-                        Quaternion::rotation_x(PI / 2.0 + s_a.grip.0 * 0.2)
+                        Quaternion::rotation_x(FRAC_PI_2 + s_a.grip.0 * 0.2)
                             * Quaternion::rotation_y(0.5 + s_a.grip.0 * 0.2);
 
                     next.control.orientation = Quaternion::rotation_x(-0.3 + 0.5 * speednorm)
@@ -138,11 +138,11 @@ impl Animation for StunnedAnimation {
                         -2.0 + -s_a.grip.2 / 2.5 + s_a.grip.0 * -2.0 + speednorm * 2.0,
                     );
 
-                    next.control_l.orientation = Quaternion::rotation_x(PI / 2.0)
+                    next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                         * Quaternion::rotation_y(-0.3)
                         * Quaternion::rotation_z(-0.3);
                     next.control_r.orientation =
-                        Quaternion::rotation_x(PI / 2.0 + s_a.grip.0 * 0.2)
+                        Quaternion::rotation_x(FRAC_PI_2 + s_a.grip.0 * 0.2)
                             * Quaternion::rotation_y(-0.4 + s_a.grip.0 * 0.2)
                             * Quaternion::rotation_z(-0.0);
 
@@ -171,7 +171,8 @@ impl Animation for StunnedAnimation {
             next.chest.position = Vec3::new(0.0, s_a.chest.0, s_a.chest.1) * s_a.scaler / 11.0;
             next.pants.position = Vec3::new(0.0, s_a.pants.0, s_a.pants.1);
             next.main.position = Vec3::new(2.0, -3.0, -3.0);
-            next.main.orientation = Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(1.57);
+            next.main.orientation =
+                Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(FRAC_PI_2);
 
             next.tail.position = Vec3::new(0.0, s_a.tail.0, s_a.tail.1);
             next.hand_l.position = Vec3::new(-s_a.hand.0, s_a.hand.1, s_a.hand.2);
diff --git a/voxygen/anim/src/biped_small/wield.rs b/voxygen/anim/src/biped_small/wield.rs
index 0b642440fd..8e821d1a73 100644
--- a/voxygen/anim/src/biped_small/wield.rs
+++ b/voxygen/anim/src/biped_small/wield.rs
@@ -3,7 +3,7 @@ use super::{
     BipedSmallSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct WieldAnimation;
 
@@ -38,7 +38,7 @@ impl Animation for WieldAnimation {
 
         let fastacc = (acc_vel * 2.0).sin();
         let fast = (anim_time * 10.0).sin();
-        let fastalt = (anim_time * 10.0 + PI / 2.0).sin();
+        let fastalt = (anim_time * 10.0 + FRAC_PI_2).sin();
         let slow = (anim_time * 2.0).sin();
 
         let speednorm = speed / 9.4;
@@ -112,9 +112,9 @@ impl Animation for WieldAnimation {
                 );
 
                 next.control_l.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + slow * 0.1) * Quaternion::rotation_y(-0.3);
+                    Quaternion::rotation_x(FRAC_PI_2 + slow * 0.1) * Quaternion::rotation_y(-0.3);
                 next.control_r.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + slow * 0.1 + s_a.grip.0 * 0.2)
+                    Quaternion::rotation_x(FRAC_PI_2 + slow * 0.1 + s_a.grip.0 * 0.2)
                         * Quaternion::rotation_y(0.5 + slow * 0.0 + s_a.grip.0 * 0.2);
 
                 next.control.orientation = Quaternion::rotation_x(-0.3 + 0.5 * speednorm)
@@ -135,11 +135,11 @@ impl Animation for WieldAnimation {
                         + speednorm * 2.0,
                 );
 
-                next.control_l.orientation = Quaternion::rotation_x(PI / 2.0 + slow * 0.1)
+                next.control_l.orientation = Quaternion::rotation_x(FRAC_PI_2 + slow * 0.1)
                     * Quaternion::rotation_y(-0.3)
                     * Quaternion::rotation_z(-0.3);
                 next.control_r.orientation =
-                    Quaternion::rotation_x(PI / 2.0 + slow * 0.1 + s_a.grip.0 * 0.2)
+                    Quaternion::rotation_x(FRAC_PI_2 + slow * 0.1 + s_a.grip.0 * 0.2)
                         * Quaternion::rotation_y(-0.4 + slow * 0.0 + s_a.grip.0 * 0.2)
                         * Quaternion::rotation_z(-0.0);
 
diff --git a/voxygen/anim/src/bird_large/run.rs b/voxygen/anim/src/bird_large/run.rs
index e5f940d016..284f0d3d2f 100644
--- a/voxygen/anim/src/bird_large/run.rs
+++ b/voxygen/anim/src/bird_large/run.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     BirdLargeSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct RunAnimation;
 
@@ -47,10 +47,10 @@ impl Animation for RunAnimation {
 
         //FL
         let foot1a = (mixed_vel * 1.0 * lab * speedmult + 0.0 + PI).sin() * speednorm; //1.5
-        let foot1b = (mixed_vel * 1.0 * lab * speedmult + 1.57 + PI).sin() * speednorm; //1.9
+        let foot1b = (mixed_vel * 1.0 * lab * speedmult + FRAC_PI_2 + PI).sin() * speednorm; //1.9
         //FR
         let foot2a = (mixed_vel * 1.0 * lab * speedmult).sin() * speednorm; //1.2
-        let foot2b = (mixed_vel * 1.0 * lab * speedmult + 1.57).sin() * speednorm; //1.6
+        let foot2b = (mixed_vel * 1.0 * lab * speedmult + FRAC_PI_2).sin() * speednorm; //1.6
         let ori: Vec2<f32> = Vec2::from(orientation);
         let last_ori = Vec2::from(last_ori);
         let tilt = if ::vek::Vec2::new(ori, last_ori)
diff --git a/voxygen/anim/src/bird_large/summon.rs b/voxygen/anim/src/bird_large/summon.rs
index 5176540e77..0853162d59 100644
--- a/voxygen/anim/src/bird_large/summon.rs
+++ b/voxygen/anim/src/bird_large/summon.rs
@@ -16,7 +16,6 @@ impl Animation for SummonAnimation {
     const UPDATE_FN: &'static [u8] = b"bird_large_summon\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "bird_large_summon")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (global_time, stage_section, timer, look_dir, on_ground): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/bird_medium/fly.rs b/voxygen/anim/src/bird_medium/fly.rs
index 5fefb3ffae..4fe0fee00a 100644
--- a/voxygen/anim/src/bird_medium/fly.rs
+++ b/voxygen/anim/src/bird_medium/fly.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     BirdMediumSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct FlyAnimation;
 
@@ -27,7 +27,7 @@ impl Animation for FlyAnimation {
 
         let footl = (anim_time * lab + PI).sin();
         let footr = (anim_time * lab).sin();
-        let center = (anim_time * lab + PI / 2.0).sin();
+        let center = (anim_time * lab + FRAC_PI_2).sin();
         let centeroffset = (anim_time * lab + PI * 1.5).sin();
 
         next.torso.scale = Vec3::one() / 11.0;
diff --git a/voxygen/anim/src/bird_medium/run.rs b/voxygen/anim/src/bird_medium/run.rs
index 9f1dd93ac1..166294bbdd 100644
--- a/voxygen/anim/src/bird_medium/run.rs
+++ b/voxygen/anim/src/bird_medium/run.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     BirdMediumSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct RunAnimation;
 
@@ -27,7 +27,7 @@ impl Animation for RunAnimation {
 
         let footl = (anim_time * lab + PI).sin();
         let footr = (anim_time * lab).sin();
-        let center = (anim_time * lab + PI / 2.0).sin();
+        let center = (anim_time * lab + FRAC_PI_2).sin();
         let centeroffset = (anim_time * lab + PI * 1.5).sin();
 
         next.torso.scale = Vec3::one() / 11.0;
diff --git a/voxygen/anim/src/character/alpha.rs b/voxygen/anim/src/character/alpha.rs
index 8e6431d54f..0359ce418c 100644
--- a/voxygen/anim/src/character/alpha.rs
+++ b/voxygen/anim/src/character/alpha.rs
@@ -23,7 +23,6 @@ impl Animation for AlphaAnimation {
     const UPDATE_FN: &'static [u8] = b"character_alpha\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_alpha")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (hands, stage_section, ability_info): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/character/beam.rs b/voxygen/anim/src/character/beam.rs
index fc6d6bbde9..08d0991e2b 100644
--- a/voxygen/anim/src/character/beam.rs
+++ b/voxygen/anim/src/character/beam.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, FRAC_PI_4};
 
 pub struct BeamAnimation;
 
@@ -71,7 +71,7 @@ impl Animation for BeamAnimation {
                                 + (move1 * -1.4 + (move2 * 16.0).sin() * 0.07) * (1.0 - move3),
                         )
                         * Quaternion::rotation_z(
-                            (move1 * -1.7 + (move2 * 8.0 + PI / 4.0).sin() * 0.3) * (1.0 - move3),
+                            (move1 * -1.7 + (move2 * 8.0 + FRAC_PI_4).sin() * 0.3) * (1.0 - move3),
                         );
                 next.head.orientation = Quaternion::rotation_x(0.0);
 
@@ -79,12 +79,12 @@ impl Animation for BeamAnimation {
                     0.0 + (move1 * -1.0 + (move2 * 8.0).sin() * 3.5) * (1.0 - move3),
                     0.0 + (move1 * -5.0 + (move2 * 8.0).sin() * -2.0 + (move2 * 16.0).sin() * -1.5)
                         * (1.0 - move3),
-                    -4.0 + (move1 * 19.0 + (move2 * 8.0 + PI / 2.0).sin() * 3.5) * (1.0 - move3),
+                    -4.0 + (move1 * 19.0 + (move2 * 8.0 + FRAC_PI_2).sin() * 3.5) * (1.0 - move3),
                 );
                 next.hand_l.orientation =
                     Quaternion::rotation_x(s_a.sthr.3 + (move1 * -0.3) * (1.0 - move3))
                         * Quaternion::rotation_y(
-                            (move1 * -1.1 + (move2 * 8.0 + PI / 2.0).sin() * -0.3) * (1.0 - move3),
+                            (move1 * -1.1 + (move2 * 8.0 + FRAC_PI_2).sin() * -0.3) * (1.0 - move3),
                         )
                         * Quaternion::rotation_z((move1 * -2.8) * (1.0 - move3));
 
diff --git a/voxygen/anim/src/character/climb.rs b/voxygen/anim/src/character/climb.rs
index b920e9c123..f301271891 100644
--- a/voxygen/anim/src/character/climb.rs
+++ b/voxygen/anim/src/character/climb.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct ClimbAnimation;
 
@@ -34,15 +34,15 @@ impl Animation for ClimbAnimation {
         *rate = speed;
         let constant: f32 = 1.0;
         let smooth = (anim_time * constant * 1.5).sin();
-        let smootha = (anim_time * constant * 1.5 + PI / 2.0).sin();
-        let drop = (anim_time * constant * 4.0 + PI / 2.0).sin();
+        let smootha = (anim_time * constant * 1.5 + FRAC_PI_2).sin();
+        let drop = (anim_time * constant * 4.0 + FRAC_PI_2).sin();
         let dropa = (anim_time * constant * 4.0).sin();
 
         let quick = ((5.0 / (0.6 + 4.0 * ((anim_time * constant * 1.5).sin()).powi(2))).sqrt())
             * ((anim_time * constant * 1.5).sin());
         let quicka =
-            ((5.0 / (0.6 + 4.0 * ((anim_time * constant * 1.5 + PI / 2.0).sin()).powi(2))).sqrt())
-                * ((anim_time * constant * 1.5 + PI / 2.0).sin());
+            ((5.0 / (0.6 + 4.0 * ((anim_time * constant * 1.5 + FRAC_PI_2).sin()).powi(2))).sqrt())
+                * ((anim_time * constant * 1.5 + FRAC_PI_2).sin());
         let head_look = Vec2::new(
             (global_time / 2.0 + anim_time / 2.0)
                 .floor()
diff --git a/voxygen/anim/src/character/dance.rs b/voxygen/anim/src/character/dance.rs
index f3239d0f5a..3d635ebe06 100644
--- a/voxygen/anim/src/character/dance.rs
+++ b/voxygen/anim/src/character/dance.rs
@@ -3,7 +3,10 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, FRAC_PI_6},
+    ops::Mul,
+};
 
 pub struct DanceAnimation;
 
@@ -29,12 +32,12 @@ impl Animation for DanceAnimation {
         let lab: f32 = 1.0;
         let short = ((5.0 / (3.0 + 2.0 * ((anim_time * lab * 6.0).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 6.0).sin());
-        let noisea = (anim_time * 11.0 + PI / 6.0).sin();
-        let noiseb = (anim_time * 19.0 + PI / 4.0).sin();
+        let noisea = (anim_time * 11.0 + FRAC_PI_6).sin();
+        let noiseb = (anim_time * 19.0 + FRAC_PI_4).sin();
 
         let shorte = (anim_time * lab * 6.0).sin();
 
-        let shortealt = (anim_time * lab * 6.0 + PI / 2.0).sin();
+        let shortealt = (anim_time * lab * 6.0 + FRAC_PI_2).sin();
 
         let foot = ((5.0 / (1.0 + (4.0) * ((anim_time * lab * 8.0).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 8.0).sin());
diff --git a/voxygen/anim/src/character/dash.rs b/voxygen/anim/src/character/dash.rs
index b9f8d0d0f8..3dd8529dee 100644
--- a/voxygen/anim/src/character/dash.rs
+++ b/voxygen/anim/src/character/dash.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 
 pub struct DashAnimation;
 
@@ -55,7 +55,7 @@ impl Animation for DashAnimation {
             ((5.0 / (1.5 + 3.5 * ((x * 5.0).sin()).powi(2))).sqrt()) * ((x * 5.0).sin())
         }
 
-        fn shortalt(x: f32) -> f32 { (x * 5.0 + PI / 2.0).sin() }
+        fn shortalt(x: f32) -> f32 { (x * 5.0 + FRAC_PI_2).sin() }
 
         next.head.position = Vec3::new(0.0, s_a.head.0, s_a.head.1);
         next.second.position = Vec3::new(0.0, 0.0, 0.0);
diff --git a/voxygen/anim/src/character/equip.rs b/voxygen/anim/src/character/equip.rs
index 7eca936bad..547f534bf0 100644
--- a/voxygen/anim/src/character/equip.rs
+++ b/voxygen/anim/src/character/equip.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_4, PI};
 
 pub struct EquipAnimation;
 
@@ -15,7 +15,6 @@ impl Animation for EquipAnimation {
     const UPDATE_FN: &'static [u8] = b"character_equip\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_equip")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, _second_tool_kind, _velocity, _global_time): Self::Dependency<'a>,
@@ -26,7 +25,7 @@ impl Animation for EquipAnimation {
         *rate = 1.0;
         let mut next = (*skeleton).clone();
         let equip_slow = 1.0 + (anim_time * 12.0 + PI).cos();
-        let equip_slowa = 1.0 + (anim_time * 12.0 + PI / 4.0).cos();
+        let equip_slowa = 1.0 + (anim_time * 12.0 + FRAC_PI_4).cos();
         next.hand_l.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(1.57);
         next.hand_r.orientation = Quaternion::rotation_y(-2.3) * Quaternion::rotation_z(1.57);
         next.control.position = Vec3::new(equip_slowa * -1.5, 0.0, equip_slow * 1.5);
diff --git a/voxygen/anim/src/character/jump.rs b/voxygen/anim/src/character/jump.rs
index 5125600540..4ab2a4bdc9 100644
--- a/voxygen/anim/src/character/jump.rs
+++ b/voxygen/anim/src/character/jump.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::{Hands, ToolKind};
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct JumpAnimation;
 impl Animation for JumpAnimation {
@@ -155,15 +155,18 @@ impl Animation for JumpAnimation {
             },
             Some(ToolKind::Staff) | Some(ToolKind::Sceptre) => {
                 next.main.position = Vec3::new(2.0, -5.0, -1.0);
-                next.main.orientation = Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Bow) => {
                 next.main.position = Vec3::new(0.0, -5.0, 6.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             _ => {
                 next.main.position = Vec3::new(-7.0, -5.0, 15.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
@@ -182,7 +185,7 @@ impl Animation for JumpAnimation {
             _ => {
                 next.second.position = Vec3::new(-7.0, -5.0, 15.0);
                 next.second.orientation =
-                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
@@ -211,7 +214,7 @@ impl Animation for JumpAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.main.position = Vec3::new(-4.0, -5.0, 10.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(2.35) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(2.35) * Quaternion::rotation_z(FRAC_PI_2);
                 },
 
                 _ => {},
@@ -223,7 +226,7 @@ impl Animation for JumpAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.second.position = Vec3::new(4.0, -6.0, 10.0);
                     next.second.orientation =
-                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-1.57);
+                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-FRAC_PI_2);
                 },
                 _ => {},
             },
diff --git a/voxygen/anim/src/character/leapmelee.rs b/voxygen/anim/src/character/leapmelee.rs
index dc66ab1d9b..1c8b5afdec 100644
--- a/voxygen/anim/src/character/leapmelee.rs
+++ b/voxygen/anim/src/character/leapmelee.rs
@@ -6,6 +6,8 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
+use std::f32::consts::FRAC_PI_2;
+
 pub struct LeapAnimation;
 
 type LeapAnimationDependency = (
@@ -23,7 +25,6 @@ impl Animation for LeapAnimation {
     const UPDATE_FN: &'static [u8] = b"character_leapmelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_leapmelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (hands, _velocity, _global_time, stage_section, ability_info): Self::Dependency<'a>,
@@ -133,7 +134,7 @@ impl Animation for LeapAnimation {
                             s_a.hc.2 + move2 * 5.0 + move3 * -10.0,
                         );
                         next.control.orientation =
-                            Quaternion::rotation_x(s_a.hc.3 + move2 * 1.57 + move3 * -2.3)
+                            Quaternion::rotation_x(s_a.hc.3 + move2 * FRAC_PI_2 + move3 * -2.3)
                                 * Quaternion::rotation_y(s_a.hc.4 + move2 * 1.3)
                                 * Quaternion::rotation_z(s_a.hc.5 + move2 * -1.0 + move3 * 0.5);
                     },
@@ -170,7 +171,7 @@ impl Animation for LeapAnimation {
                         Quaternion::rotation_x(-0.3 + move2 * 1.0 + move3 * -2.0)
                             * Quaternion::rotation_y(move2 * -0.5 + move3 * 1.9);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 Some(ToolKind::Hammer) | Some(ToolKind::Pick) => {
                     next.control_l.position = Vec3::new(
@@ -181,7 +182,7 @@ impl Animation for LeapAnimation {
                     next.control_l.orientation =
                         Quaternion::rotation_x(-0.3 + move2 * 1.5 + move3 * -2.5);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
 
                 _ => {},
@@ -200,7 +201,7 @@ impl Animation for LeapAnimation {
                         next.control_r.orientation = Quaternion::rotation_x(-0.3 + move3 * -2.2)
                             * Quaternion::rotation_y(move2 * -0.5 + move3 * 1.2);
                         next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                        next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                        next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     },
                     Some(ToolKind::Hammer) | Some(ToolKind::Pick) => {
                         next.control_r.position = Vec3::new(
@@ -212,7 +213,7 @@ impl Animation for LeapAnimation {
                             Quaternion::rotation_x(-0.3 + move2 * 1.5 + move3 * -2.5)
                                 * Quaternion::rotation_y(move2 * -0.75 + move3 * 0.75);
                         next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                        next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                        next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     },
                     _ => {},
                 }
diff --git a/voxygen/anim/src/character/repeater.rs b/voxygen/anim/src/character/repeater.rs
index c8dbde6256..ad2f0e4b2d 100644
--- a/voxygen/anim/src/character/repeater.rs
+++ b/voxygen/anim/src/character/repeater.rs
@@ -6,6 +6,8 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
+use std::f32::consts::FRAC_PI_2;
+
 pub struct RepeaterAnimation;
 
 impl Animation for RepeaterAnimation {
@@ -23,7 +25,6 @@ impl Animation for RepeaterAnimation {
     const UPDATE_FN: &'static [u8] = b"character_repeater\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_repeater")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (ability_info, hands, velocity, _global_time, stage_section): Self::Dependency<'a>,
@@ -57,7 +58,8 @@ impl Animation for RepeaterAnimation {
             next.main.orientation = Quaternion::rotation_y(0.0) * Quaternion::rotation_z(0.0);
 
             next.hold.position = Vec3::new(0.0, -1.0 + move3 * 2.0, -5.2);
-            next.hold.orientation = Quaternion::rotation_x(-1.57) * Quaternion::rotation_z(0.0);
+            next.hold.orientation =
+                Quaternion::rotation_x(-FRAC_PI_2) * Quaternion::rotation_z(0.0);
             next.hold.scale = Vec3::one() * (1.0);
             if speed < 0.5 {
                 next.foot_l.position = Vec3::new(
diff --git a/voxygen/anim/src/character/run.rs b/voxygen/anim/src/character/run.rs
index 561c28b9c8..9873da41ed 100644
--- a/voxygen/anim/src/character/run.rs
+++ b/voxygen/anim/src/character/run.rs
@@ -3,7 +3,10 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::{Hands, ToolKind};
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, FRAC_PI_6, PI},
+    ops::Mul,
+};
 
 pub struct RunAnimation;
 
@@ -62,8 +65,8 @@ impl Animation for RunAnimation {
             .sqrt())
             * ((acc_vel * 1.6 * lab + PI * 0.4).sin());
 
-        let noisea = (acc_vel * 11.0 + PI / 6.0).sin();
-        let noiseb = (acc_vel * 19.0 + PI / 4.0).sin();
+        let noisea = (acc_vel * 11.0 + FRAC_PI_6).sin();
+        let noiseb = (acc_vel * 19.0 + FRAC_PI_4).sin();
 
         let shorte = ((1.0 / (0.8 + 0.2 * ((acc_vel * lab * 1.6).sin()).powi(2))).sqrt())
             * ((acc_vel * lab * 1.6).sin());
@@ -80,7 +83,7 @@ impl Animation for RunAnimation {
         let footvertsl = (acc_vel * 1.6 * lab).sin();
         let footvertsr = (acc_vel * 1.6 * lab + PI * 0.5).sin();
 
-        let shortalt = (acc_vel * lab * 1.6 + PI / 2.0).sin();
+        let shortalt = (acc_vel * lab * 1.6 + FRAC_PI_2).sin();
 
         let short = ((5.0 / (1.5 + 3.5 * ((acc_vel * lab * 1.6).sin()).powi(2))).sqrt())
             * ((acc_vel * lab * 1.6).sin());
diff --git a/voxygen/anim/src/character/shoot.rs b/voxygen/anim/src/character/shoot.rs
index b1a7cbb720..db6fad9e5c 100644
--- a/voxygen/anim/src/character/shoot.rs
+++ b/voxygen/anim/src/character/shoot.rs
@@ -7,7 +7,7 @@ use common::{
     states::utils::{AbilityInfo, StageSection},
     util::Dir,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct ShootAnimation;
 
@@ -29,7 +29,6 @@ impl Animation for ShootAnimation {
     const UPDATE_FN: &'static [u8] = b"character_shoot\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_shoot")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -141,7 +140,7 @@ impl Animation for ShootAnimation {
                 next.hand_r.orientation = Quaternion::rotation_x(s_a.bhr.3);
 
                 next.hold.position = Vec3::new(0.0, -1.0 + move2 * 2.0, -5.2 + move2 * 7.0);
-                next.hold.orientation = Quaternion::rotation_x(-1.57);
+                next.hold.orientation = Quaternion::rotation_x(-FRAC_PI_2);
                 next.hold.scale = Vec3::one() * 1.0 * (1.0 - move2);
 
                 next.control.position = Vec3::new(
diff --git a/voxygen/anim/src/character/sit.rs b/voxygen/anim/src/character/sit.rs
index b620143c9c..9885f0fde9 100644
--- a/voxygen/anim/src/character/sit.rs
+++ b/voxygen/anim/src/character/sit.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct SitAnimation;
 
@@ -25,8 +25,8 @@ impl Animation for SitAnimation {
         let mut next = (*skeleton).clone();
 
         let slow = (anim_time * 1.0).sin();
-        let slowa = (anim_time * 1.0 + PI / 2.0).sin();
-        let stop = (anim_time * 3.0).min(PI / 2.0).sin();
+        let slowa = (anim_time * 1.0 + FRAC_PI_2).sin();
+        let stop = (anim_time * 3.0).min(FRAC_PI_2).sin();
 
         let head_look = Vec2::new(
             (global_time * 0.05 + anim_time / 15.0)
diff --git a/voxygen/anim/src/character/sneak.rs b/voxygen/anim/src/character/sneak.rs
index 45fddf971d..e402b11f40 100644
--- a/voxygen/anim/src/character/sneak.rs
+++ b/voxygen/anim/src/character/sneak.rs
@@ -3,7 +3,10 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::ToolKind;
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, FRAC_PI_6, PI},
+    ops::Mul,
+};
 
 pub struct SneakAnimation;
 
@@ -47,13 +50,13 @@ impl Animation for SneakAnimation {
             * ((anim_time * 7.0 * lab + PI * 0.4).sin());
 
         let short = (anim_time * lab * 7.0).sin();
-        let noisea = (anim_time * 11.0 + PI / 6.0).sin();
-        let noiseb = (anim_time * 19.0 + PI / 4.0).sin();
+        let noisea = (anim_time * 11.0 + FRAC_PI_6).sin();
+        let noiseb = (anim_time * 19.0 + FRAC_PI_4).sin();
 
         let shorte = ((5.0 / (4.0 + 1.0 * ((anim_time * lab * 7.0).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 7.0).sin());
 
-        let shortalt = (anim_time * lab * 7.0 + PI / 2.0).sin();
+        let shortalt = (anim_time * lab * 7.0 + FRAC_PI_2).sin();
 
         let head_look = Vec2::new(
             (global_time + anim_time / 18.0).floor().mul(7331.0).sin() * 0.2,
diff --git a/voxygen/anim/src/character/spin.rs b/voxygen/anim/src/character/spin.rs
index 112d9806f6..b465c9b73a 100644
--- a/voxygen/anim/src/character/spin.rs
+++ b/voxygen/anim/src/character/spin.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct SpinAnimation;
 
@@ -144,7 +144,7 @@ impl Animation for SpinAnimation {
                         next.control.orientation =
                             Quaternion::rotation_x(-0.5 + s_a.sc.3 + movement1base * -1.2)
                                 * Quaternion::rotation_y(s_a.sc.4 - 0.6 + movement2base * -0.2)
-                                * Quaternion::rotation_z(s_a.sc.5 - 1.57 + movement1base * PI);
+                                * Quaternion::rotation_z(s_a.sc.5 - FRAC_PI_2 + movement1base * PI);
                     },
                     Some(ToolKind::Axe) => {
                         next.hand_l.position = Vec3::new(s_a.ahl.0, s_a.ahl.1, s_a.ahl.2);
@@ -183,7 +183,7 @@ impl Animation for SpinAnimation {
                         * Quaternion::rotation_y(-2.7 + movement1base * -1.0 + movement2base * 2.0)
                         * Quaternion::rotation_z(1.5 + movement1base * PI);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 Some(ToolKind::Axe) => {
                     next.control_l.position = Vec3::new(
@@ -193,9 +193,9 @@ impl Animation for SpinAnimation {
                     );
                     next.control_l.orientation = Quaternion::rotation_x(1.7 + movement2base * 1.5)
                         * Quaternion::rotation_y(-3.7)
-                        * Quaternion::rotation_z(1.5 + movement2base * 1.57);
+                        * Quaternion::rotation_z(1.5 + movement2base * FRAC_PI_2);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
 
                 _ => {},
@@ -212,7 +212,7 @@ impl Animation for SpinAnimation {
                             * Quaternion::rotation_y(-3.3 + move1 * -1.0 + move2 * 2.0)
                             * Quaternion::rotation_z(1.5 + move1 * PI);
                         next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                        next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                        next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     },
                     Some(ToolKind::Axe) => {
                         next.control_r.position = Vec3::new(
@@ -222,9 +222,9 @@ impl Animation for SpinAnimation {
                         );
                         next.control_r.orientation = Quaternion::rotation_x(1.7 + move2 * 1.5)
                             * Quaternion::rotation_y(-3.3)
-                            * Quaternion::rotation_z(1.5 + move2 * 1.57);
+                            * Quaternion::rotation_z(1.5 + move2 * FRAC_PI_2);
                         next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                        next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                        next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     },
 
                     _ => {},
diff --git a/voxygen/anim/src/character/spinmelee.rs b/voxygen/anim/src/character/spinmelee.rs
index c49bee2d49..210c48bf3d 100644
--- a/voxygen/anim/src/character/spinmelee.rs
+++ b/voxygen/anim/src/character/spinmelee.rs
@@ -6,7 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::{AbilityInfo, StageSection},
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI, TAU};
 
 pub struct SpinMeleeAnimation;
 
@@ -25,7 +25,6 @@ impl Animation for SpinMeleeAnimation {
     const UPDATE_FN: &'static [u8] = b"character_spinmelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_spinmelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (hands, _velocity, _global_time, stage_section, ability_info): Self::Dependency<'a>,
@@ -50,7 +49,7 @@ impl Animation for SpinMeleeAnimation {
         next.second.orientation = Quaternion::rotation_z(0.0);
         match ability_info.and_then(|a| a.tool) {
             Some(ToolKind::Sword) => {
-                next.torso.orientation = Quaternion::rotation_z(movement2 * PI * 2.0);
+                next.torso.orientation = Quaternion::rotation_z(movement2 * TAU);
 
                 next.chest.position = Vec3::new(
                     0.0,
@@ -122,7 +121,7 @@ impl Animation for SpinMeleeAnimation {
                         s_a.sc.2 + move1 * 2.0 + move2 * 10.0,
                     );
                     next.control.orientation = Quaternion::rotation_x(s_a.sc.3 + move1 * -PI / 2.5)
-                        * Quaternion::rotation_z(s_a.sc.5 + move1 * -PI / 2.0);
+                        * Quaternion::rotation_z(s_a.sc.5 + move1 * -FRAC_PI_2);
                 },
                 Some(ToolKind::Axe) => {
                     next.main.position = Vec3::new(0.0, 0.0, 0.0);
diff --git a/voxygen/anim/src/character/staggered.rs b/voxygen/anim/src/character/staggered.rs
index 0597fccce0..43675b0590 100644
--- a/voxygen/anim/src/character/staggered.rs
+++ b/voxygen/anim/src/character/staggered.rs
@@ -6,6 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::StageSection,
 };
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct StaggeredAnimation;
 
@@ -27,7 +28,6 @@ impl Animation for StaggeredAnimation {
     const UPDATE_FN: &'static [u8] = b"character_staggered\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_staggered")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -139,7 +139,7 @@ impl Animation for StaggeredAnimation {
                             next.hand_r.orientation = Quaternion::rotation_x(s_a.bhr.3);
 
                             next.hold.position = Vec3::new(0.0, -1.0, -5.2);
-                            next.hold.orientation = Quaternion::rotation_x(-1.57);
+                            next.hold.orientation = Quaternion::rotation_x(-FRAC_PI_2);
                             next.hold.scale = Vec3::one() * 1.0;
 
                             next.control.position = Vec3::new(s_a.bc.0, s_a.bc.1, s_a.bc.2);
@@ -150,15 +150,15 @@ impl Animation for StaggeredAnimation {
                             next.hand_l.position = Vec3::new(-7.0, 4.0, 3.0);
                             next.hand_l.orientation = Quaternion::rotation_x(1.27);
                             next.main.position = Vec3::new(-5.0, 5.0, 23.0);
-                            next.main.orientation = Quaternion::rotation_x(3.14);
+                            next.main.orientation = Quaternion::rotation_x(PI);
                         },
                         Some(ToolKind::Farming) => {
                             next.hand_l.position = Vec3::new(9.0, 1.0, 1.0);
-                            next.hand_l.orientation = Quaternion::rotation_x(1.57);
+                            next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
                             next.hand_r.position = Vec3::new(9.0, 1.0, 11.0);
-                            next.hand_r.orientation = Quaternion::rotation_x(1.57);
+                            next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
                             next.main.position = Vec3::new(7.5, 7.5, 13.2);
-                            next.main.orientation = Quaternion::rotation_y(3.14);
+                            next.main.orientation = Quaternion::rotation_y(PI);
 
                             next.control.position = Vec3::new(-11.0, 1.8, 4.0);
                         },
@@ -172,7 +172,7 @@ impl Animation for StaggeredAnimation {
                     next.control_l.position = Vec3::new(-7.0, 8.0, 2.0);
                     next.control_l.orientation = Quaternion::rotation_x(-0.3);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 (_, _) => {},
             };
@@ -181,7 +181,7 @@ impl Animation for StaggeredAnimation {
                     next.control_r.position = Vec3::new(7.0, 8.0, 2.0);
                     next.control_r.orientation = Quaternion::rotation_x(-0.3);
                     next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 (_, _) => {},
             };
diff --git a/voxygen/anim/src/character/stand.rs b/voxygen/anim/src/character/stand.rs
index 50ddea63a7..66edf4a8b3 100644
--- a/voxygen/anim/src/character/stand.rs
+++ b/voxygen/anim/src/character/stand.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::{Hands, ToolKind};
-use std::ops::Mul;
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct StandAnimation;
 
@@ -114,17 +114,17 @@ impl Animation for StandAnimation {
                 Some(ToolKind::Bow) => {
                     next.main.position = Vec3::new(0.0, -5.0, 6.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
                 },
                 Some(ToolKind::Staff) | Some(ToolKind::Sceptre) => {
                     next.main.position = Vec3::new(2.0, -5.0, -1.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(FRAC_PI_2);
                 },
                 _ => {
                     next.main.position = Vec3::new(-7.0, -5.0, 15.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
                 },
             },
             ((_, _), _, _) => {},
@@ -135,7 +135,7 @@ impl Animation for StandAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.main.position = Vec3::new(-4.0, -5.0, 10.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
                 },
 
                 _ => {},
@@ -147,7 +147,7 @@ impl Animation for StandAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.second.position = Vec3::new(4.0, -6.0, 10.0);
                     next.second.orientation =
-                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-1.57);
+                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-FRAC_PI_2);
                 },
                 _ => {},
             },
diff --git a/voxygen/anim/src/character/stunned.rs b/voxygen/anim/src/character/stunned.rs
index 081ec79199..57a4ed9129 100644
--- a/voxygen/anim/src/character/stunned.rs
+++ b/voxygen/anim/src/character/stunned.rs
@@ -6,6 +6,7 @@ use common::{
     comp::item::{Hands, ToolKind},
     states::utils::StageSection,
 };
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct StunnedAnimation;
 
@@ -27,7 +28,6 @@ impl Animation for StunnedAnimation {
     const UPDATE_FN: &'static [u8] = b"character_stunned\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_stunned")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -135,7 +135,7 @@ impl Animation for StunnedAnimation {
                         next.hand_r.orientation = Quaternion::rotation_x(s_a.bhr.3);
 
                         next.hold.position = Vec3::new(0.0, -1.0, -5.2);
-                        next.hold.orientation = Quaternion::rotation_x(-1.57);
+                        next.hold.orientation = Quaternion::rotation_x(-FRAC_PI_2);
                         next.hold.scale = Vec3::one() * 1.0;
 
                         next.control.position = Vec3::new(s_a.bc.0, s_a.bc.1, s_a.bc.2);
@@ -146,15 +146,15 @@ impl Animation for StunnedAnimation {
                         next.hand_l.position = Vec3::new(-7.0, 4.0, 3.0);
                         next.hand_l.orientation = Quaternion::rotation_x(1.27);
                         next.main.position = Vec3::new(-5.0, 5.0, 23.0);
-                        next.main.orientation = Quaternion::rotation_x(3.14);
+                        next.main.orientation = Quaternion::rotation_x(PI);
                     },
                     Some(ToolKind::Farming) => {
                         next.hand_l.position = Vec3::new(9.0, 1.0, 1.0);
-                        next.hand_l.orientation = Quaternion::rotation_x(1.57);
+                        next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
                         next.hand_r.position = Vec3::new(9.0, 1.0, 11.0);
-                        next.hand_r.orientation = Quaternion::rotation_x(1.57);
+                        next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
                         next.main.position = Vec3::new(7.5, 7.5, 13.2);
-                        next.main.orientation = Quaternion::rotation_y(3.14);
+                        next.main.orientation = Quaternion::rotation_y(PI);
 
                         next.control.position = Vec3::new(-11.0, 1.8, 4.0);
                     },
@@ -167,7 +167,7 @@ impl Animation for StunnedAnimation {
                     next.control_l.position = Vec3::new(-7.0, 8.0, 2.0);
                     next.control_l.orientation = Quaternion::rotation_x(-0.3);
                     next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 (_, _) => {},
             };
@@ -176,7 +176,7 @@ impl Animation for StunnedAnimation {
                     next.control_r.position = Vec3::new(7.0, 8.0, 2.0);
                     next.control_r.orientation = Quaternion::rotation_x(-0.3);
                     next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                    next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                    next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                 },
                 (_, _) => {},
             };
diff --git a/voxygen/anim/src/character/swim.rs b/voxygen/anim/src/character/swim.rs
index 358dc06f63..099275bac3 100644
--- a/voxygen/anim/src/character/swim.rs
+++ b/voxygen/anim/src/character/swim.rs
@@ -3,7 +3,10 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::{Hands, ToolKind};
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, PI},
+    ops::Mul,
+};
 
 pub struct SwimAnimation;
 
@@ -190,15 +193,18 @@ impl Animation for SwimAnimation {
             },
             Some(ToolKind::Staff) | Some(ToolKind::Sceptre) => {
                 next.main.position = Vec3::new(2.0, -5.0, -1.0);
-                next.main.orientation = Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(-0.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             Some(ToolKind::Bow) => {
                 next.main.position = Vec3::new(0.0, -5.0, 6.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
             _ => {
                 next.main.position = Vec3::new(-7.0, -5.0, 15.0);
-                next.main.orientation = Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                next.main.orientation =
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
@@ -216,7 +222,7 @@ impl Animation for SwimAnimation {
             _ => {
                 next.second.position = Vec3::new(-7.0, -5.0, 15.0);
                 next.second.orientation =
-                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(1.57);
+                    Quaternion::rotation_y(2.5) * Quaternion::rotation_z(FRAC_PI_2);
             },
         }
 
@@ -231,7 +237,7 @@ impl Animation for SwimAnimation {
         };
         next.torso.position = Vec3::new(0.0, 0.0, 1.0 - avgspeed * 0.05) * s_a.scaler;
         next.torso.orientation = Quaternion::rotation_x(
-            (((1.0 / switch) * PI / 2.0 + avg_vel.z * 0.12).min(1.57) - PI / 2.0)
+            (((1.0 / switch) * FRAC_PI_2 + avg_vel.z * 0.12).min(FRAC_PI_2) - FRAC_PI_2)
                 + avgspeed * avg_vel.z * -0.003,
         ) * Quaternion::rotation_y(tilt * 2.0)
             * Quaternion::rotation_z(tilt * 3.0);
@@ -241,7 +247,7 @@ impl Animation for SwimAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.main.position = Vec3::new(-4.0, -5.0, 10.0);
                     next.main.orientation =
-                        Quaternion::rotation_y(2.35) * Quaternion::rotation_z(1.57);
+                        Quaternion::rotation_y(2.35) * Quaternion::rotation_z(FRAC_PI_2);
                 },
 
                 _ => {},
@@ -253,7 +259,7 @@ impl Animation for SwimAnimation {
                 Some(ToolKind::Axe) | Some(ToolKind::Hammer) | Some(ToolKind::Sword) => {
                     next.second.position = Vec3::new(4.0, -6.0, 10.0);
                     next.second.orientation =
-                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-1.57);
+                        Quaternion::rotation_y(-2.5) * Quaternion::rotation_z(-FRAC_PI_2);
                 },
                 _ => {},
             },
diff --git a/voxygen/anim/src/character/swimwield.rs b/voxygen/anim/src/character/swimwield.rs
index 20dc7953ea..96872253a5 100644
--- a/voxygen/anim/src/character/swimwield.rs
+++ b/voxygen/anim/src/character/swimwield.rs
@@ -3,7 +3,10 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::comp::item::{Hands, ToolKind};
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, FRAC_PI_6, PI},
+    ops::Mul,
+};
 
 pub struct SwimWieldAnimation;
 
@@ -22,7 +25,6 @@ impl Animation for SwimWieldAnimation {
     const UPDATE_FN: &'static [u8] = b"character_swimwield\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_swimwield")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (active_tool_kind, second_tool_kind, hands, velocity, global_time): Self::Dependency<'a>,
@@ -56,8 +58,8 @@ impl Animation for SwimWieldAnimation {
         let u_slowalt = (anim_time * 3.0 + PI).cos();
         let short = ((5.0 / (1.5 + 3.5 * ((anim_time * lab * 16.0).sin()).powi(2))).sqrt())
             * ((anim_time * lab * 16.0).sin());
-        let noisea = (anim_time * 11.0 + PI / 6.0).sin();
-        let noiseb = (anim_time * 19.0 + PI / 4.0).sin();
+        let noisea = (anim_time * 11.0 + FRAC_PI_6).sin();
+        let noiseb = (anim_time * 19.0 + FRAC_PI_4).sin();
 
         next.foot_l.position = Vec3::new(
             -s_a.foot.0,
@@ -198,12 +200,12 @@ impl Animation for SwimWieldAnimation {
                         * Quaternion::rotation_z(PI - 0.2);
                 }
                 next.hand_l.position = Vec3::new(-0.5, 0.0, 4.0);
-                next.hand_l.orientation = Quaternion::rotation_x(PI / 2.0)
+                next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     * Quaternion::rotation_z(0.0)
                     * Quaternion::rotation_y(0.0);
                 next.hand_l.scale = Vec3::one() * 1.04;
                 next.hand_r.position = Vec3::new(0.5, 0.0, -2.5);
-                next.hand_r.orientation = Quaternion::rotation_x(PI / 2.0)
+                next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
                     * Quaternion::rotation_z(0.0)
                     * Quaternion::rotation_y(0.0);
                 next.hand_r.scale = Vec3::one() * 1.04;
@@ -224,8 +226,8 @@ impl Animation for SwimWieldAnimation {
                 next.hand_r.scale = Vec3::one() * 1.04;
                 next.main.position = Vec3::new(0.0, 0.0, 0.0);
                 next.main.orientation = Quaternion::rotation_x(0.0)
-                    * Quaternion::rotation_y(-1.57)
-                    * Quaternion::rotation_z(1.57);
+                    * Quaternion::rotation_y(-FRAC_PI_2)
+                    * Quaternion::rotation_z(FRAC_PI_2);
 
                 next.control.position = Vec3::new(6.0, 7.0, 1.0);
                 next.control.orientation = Quaternion::rotation_x(0.3 + u_slow * 0.15)
@@ -244,7 +246,7 @@ impl Animation for SwimWieldAnimation {
                 next.hand_r.scale = Vec3::one() * 1.04;
                 next.main.position = Vec3::new(12.0, 8.4, 13.2);
                 next.main.orientation = Quaternion::rotation_x(-0.3)
-                    * Quaternion::rotation_y(3.14 + 0.3)
+                    * Quaternion::rotation_y(PI + 0.3)
                     * Quaternion::rotation_z(0.9);
 
                 next.control.position = Vec3::new(-14.0, 1.8, 3.0);
diff --git a/voxygen/anim/src/character/talk.rs b/voxygen/anim/src/character/talk.rs
index f2fe4bbfb2..64fce166fb 100644
--- a/voxygen/anim/src/character/talk.rs
+++ b/voxygen/anim/src/character/talk.rs
@@ -3,7 +3,7 @@ use super::{
     CharacterSkeleton, SkeletonAttr,
 };
 use common::{comp::item::ToolKind, util::Dir};
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 
 pub struct TalkAnimation;
 
@@ -15,7 +15,6 @@ impl Animation for TalkAnimation {
     const UPDATE_FN: &'static [u8] = b"character_talk\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_talk")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (_active_tool_kind, _second_tool_kind, _velocity, _global_time, look_dir): Self::Dependency<
@@ -29,8 +28,8 @@ impl Animation for TalkAnimation {
         let mut next = (*skeleton).clone();
 
         let slowa = (anim_time * 6.0).sin();
-        let slowb = (anim_time * 4.0 + PI / 2.0).sin();
-        let slowc = (anim_time * 12.0 + PI / 2.0).sin();
+        let slowb = (anim_time * 4.0 + FRAC_PI_2).sin();
+        let slowc = (anim_time * 12.0 + FRAC_PI_2).sin();
 
         next.head.orientation = Quaternion::rotation_x(slowc * 0.035 + look_dir.z * 0.7);
         next.hand_l.position = Vec3::new(
diff --git a/voxygen/anim/src/character/wield.rs b/voxygen/anim/src/character/wield.rs
index 36974076d3..4fe3549382 100644
--- a/voxygen/anim/src/character/wield.rs
+++ b/voxygen/anim/src/character/wield.rs
@@ -6,7 +6,10 @@ use common::{
     comp::item::{Hands, ToolKind},
     util::Dir,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, PI},
+    ops::Mul,
+};
 
 pub struct WieldAnimation;
 
@@ -28,7 +31,6 @@ impl Animation for WieldAnimation {
     const UPDATE_FN: &'static [u8] = b"character_wield\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "character_wield")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (
@@ -57,14 +59,14 @@ impl Animation for WieldAnimation {
 
         let foothoril = (anim_time * 16.0 * lab + PI * 1.45).sin();
 
-        let beltstatic = (anim_time * 10.0 * lab + PI / 2.0).sin();
+        let beltstatic = (anim_time * 10.0 * lab + FRAC_PI_2).sin();
         let footvertlstatic = (anim_time * 10.0 * lab).sin();
         let footvertrstatic = (anim_time * 10.0 * lab + PI).sin();
         let footrotl =
             ((1.0 / (0.5 + (0.5) * ((anim_time * 16.0 * lab + PI * 1.4).sin()).powi(2))).sqrt())
                 * ((anim_time * 16.0 * lab + PI * 1.4).sin());
 
-        let shortalt = (anim_time * lab * 16.0 + PI / 2.0).sin();
+        let shortalt = (anim_time * lab * 16.0 + FRAC_PI_2).sin();
 
         let slowalt = (anim_time * 6.0 + PI).cos();
         let u_slow = (anim_time * 2.5 + PI).sin();
@@ -253,7 +255,7 @@ impl Animation for WieldAnimation {
                     next.hand_r.orientation = Quaternion::rotation_x(s_a.bhr.3);
 
                     next.hold.position = Vec3::new(0.0, -1.0, -5.2);
-                    next.hold.orientation = Quaternion::rotation_x(-1.57);
+                    next.hold.orientation = Quaternion::rotation_x(-FRAC_PI_2);
                     next.hold.scale = Vec3::one() * 1.0;
 
                     next.control.position =
@@ -274,11 +276,11 @@ impl Animation for WieldAnimation {
                             * Quaternion::rotation_x(-0.2 + head_look.y.abs() + look_dir.z * 0.7);
                     }
                     next.hand_l.position = Vec3::new(9.0, 1.0, 1.0);
-                    next.hand_l.orientation = Quaternion::rotation_x(1.57);
+                    next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2);
                     next.hand_r.position = Vec3::new(9.0, 1.0, 11.0);
-                    next.hand_r.orientation = Quaternion::rotation_x(1.57);
+                    next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2);
                     next.main.position = Vec3::new(7.5, 7.5, 13.2);
-                    next.main.orientation = Quaternion::rotation_y(3.14);
+                    next.main.orientation = Quaternion::rotation_y(PI);
 
                     next.control.position = Vec3::new(-11.0 + slow * 2.0, 1.8, 4.0);
                     next.control.orientation = Quaternion::rotation_x(u_slow * 0.1)
@@ -294,7 +296,7 @@ impl Animation for WieldAnimation {
                 next.control_l.position = Vec3::new(-7.0, 8.0, 2.0);
                 next.control_l.orientation = Quaternion::rotation_x(-0.3);
                 next.hand_l.position = Vec3::new(0.0, -0.5, 0.0);
-                next.hand_l.orientation = Quaternion::rotation_x(1.57)
+                next.hand_l.orientation = Quaternion::rotation_x(FRAC_PI_2)
             },
             (_, _) => {},
         };
@@ -303,7 +305,7 @@ impl Animation for WieldAnimation {
                 next.control_r.position = Vec3::new(7.0, 8.0, 2.0);
                 next.control_r.orientation = Quaternion::rotation_x(-0.3);
                 next.hand_r.position = Vec3::new(0.0, -0.5, 0.0);
-                next.hand_r.orientation = Quaternion::rotation_x(1.57)
+                next.hand_r.orientation = Quaternion::rotation_x(FRAC_PI_2)
             },
             (_, _) => {},
         };
diff --git a/voxygen/anim/src/dragon/fly.rs b/voxygen/anim/src/dragon/fly.rs
index fb5f1f9169..b8457e61fb 100644
--- a/voxygen/anim/src/dragon/fly.rs
+++ b/voxygen/anim/src/dragon/fly.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     DragonSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct FlyAnimation;
 
@@ -35,7 +35,7 @@ impl Animation for FlyAnimation {
         let footl = (anim_time * lab + PI).sin();
         let footr = (anim_time * lab).sin();
 
-        let center = (anim_time * lab + PI / 2.0).sin();
+        let center = (anim_time * lab + FRAC_PI_2).sin();
         let centeroffset = (anim_time * lab + PI * 1.5).sin();
 
         next.head_upper.scale = Vec3::one() * 1.05;
diff --git a/voxygen/anim/src/dragon/idle.rs b/voxygen/anim/src/dragon/idle.rs
index 28628b316a..63f25c5977 100644
--- a/voxygen/anim/src/dragon/idle.rs
+++ b/voxygen/anim/src/dragon/idle.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     DragonSkeleton, SkeletonAttr,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct IdleAnimation;
 
@@ -25,7 +25,7 @@ impl Animation for IdleAnimation {
 
         let ultra_slow = (anim_time * 1.0).sin();
         let slow = (anim_time * 2.5).sin();
-        let slowalt = (anim_time * 2.5 + PI / 2.0).sin();
+        let slowalt = (anim_time * 2.5 + FRAC_PI_2).sin();
 
         let dragon_look = Vec2::new(
             (global_time / 2.0 + anim_time / 8.0)
diff --git a/voxygen/anim/src/dragon/run.rs b/voxygen/anim/src/dragon/run.rs
index 8356f8acd8..439c89e60e 100644
--- a/voxygen/anim/src/dragon/run.rs
+++ b/voxygen/anim/src/dragon/run.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     DragonSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct RunAnimation;
 
@@ -64,7 +64,7 @@ impl Animation for RunAnimation {
         let horilboffset = (anim_time * lab + PI * 1.4).sin();
         let horirb = (anim_time * lab + PI * 0.4).sin();
 
-        let center = (anim_time * lab + PI / 2.0).sin();
+        let center = (anim_time * lab + FRAC_PI_2).sin();
         let centeroffset = (anim_time * lab + PI * 1.5).sin();
 
         next.head_lower.scale = Vec3::one() * 1.02;
diff --git a/voxygen/anim/src/golem/run.rs b/voxygen/anim/src/golem/run.rs
index d9f0fe504a..98d7fc0585 100644
--- a/voxygen/anim/src/golem/run.rs
+++ b/voxygen/anim/src/golem/run.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     GolemSkeleton, SkeletonAttr,
 };
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct RunAnimation;
 
@@ -50,7 +50,7 @@ impl Animation for RunAnimation {
             * speednorm;
 
         let short = (mixed_vel * lab * 2.0).sin() * speednorm;
-        let shortalt = (mixed_vel * lab * 2.0 + PI / 2.0).sin() * speednorm;
+        let shortalt = (mixed_vel * lab * 2.0 + FRAC_PI_2).sin() * speednorm;
         let ori: Vec2<f32> = Vec2::from(orientation);
         let last_ori = Vec2::from(last_ori);
         let tilt = if ::vek::Vec2::new(ori, last_ori)
diff --git a/voxygen/anim/src/golem/shoot.rs b/voxygen/anim/src/golem/shoot.rs
index e4d8b3ae1d..60345286f7 100644
--- a/voxygen/anim/src/golem/shoot.rs
+++ b/voxygen/anim/src/golem/shoot.rs
@@ -3,6 +3,8 @@ use super::{
     GolemSkeleton, SkeletonAttr,
 };
 use common::{states::utils::StageSection, util::Dir};
+use std::f32::consts::FRAC_PI_2;
+
 pub struct ShootAnimation;
 
 impl Animation for ShootAnimation {
@@ -46,8 +48,9 @@ impl Animation for ShootAnimation {
         next.shoulder_l.orientation =
             Quaternion::rotation_y(0.0) * Quaternion::rotation_z(move1 * 0.7);
 
-        next.shoulder_r.orientation = Quaternion::rotation_x(move1 * (look_dir.z * 1.2 + 1.57))
-            * Quaternion::rotation_y(move1 * 0.0);
+        next.shoulder_r.orientation =
+            Quaternion::rotation_x(move1 * (look_dir.z * 1.2 + FRAC_PI_2))
+                * Quaternion::rotation_y(move1 * 0.0);
 
         next.hand_l.orientation =
             Quaternion::rotation_z(move1 * -0.3) * Quaternion::rotation_x(move1 * 1.3);
diff --git a/voxygen/anim/src/golem/spinmelee.rs b/voxygen/anim/src/golem/spinmelee.rs
index e49daeadcf..5547b49300 100644
--- a/voxygen/anim/src/golem/spinmelee.rs
+++ b/voxygen/anim/src/golem/spinmelee.rs
@@ -15,7 +15,6 @@ impl Animation for SpinMeleeAnimation {
     const UPDATE_FN: &'static [u8] = b"golem_spinmelee\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "golem_spinmelee")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         stage_section: Self::Dependency<'a>,
diff --git a/voxygen/anim/src/object/beam.rs b/voxygen/anim/src/object/beam.rs
index 99b3024e41..ae81972718 100644
--- a/voxygen/anim/src/object/beam.rs
+++ b/voxygen/anim/src/object/beam.rs
@@ -22,7 +22,6 @@ impl Animation for BeamAnimation {
     const UPDATE_FN: &'static [u8] = b"object_beam\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "object_beam")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (_active_tool_kind, _second_tool_kind, _stage_section, _body): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/object/idle.rs b/voxygen/anim/src/object/idle.rs
index 42cdcd6832..1684db73a8 100644
--- a/voxygen/anim/src/object/idle.rs
+++ b/voxygen/anim/src/object/idle.rs
@@ -14,7 +14,6 @@ impl Animation for IdleAnimation {
     const UPDATE_FN: &'static [u8] = b"object_idle\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "object_idle")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (_active_tool_kind, _second_tool_kind, _global_time): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/object/shoot.rs b/voxygen/anim/src/object/shoot.rs
index 32bcb56542..9d74848a65 100644
--- a/voxygen/anim/src/object/shoot.rs
+++ b/voxygen/anim/src/object/shoot.rs
@@ -22,7 +22,6 @@ impl Animation for ShootAnimation {
     const UPDATE_FN: &'static [u8] = b"object_shoot\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "object_shoot")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (_active_tool_kind, _second_tool_kind, stage_section, body): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/quadruped_low/breathe.rs b/voxygen/anim/src/quadruped_low/breathe.rs
index c70f4bdb9a..d22da8e817 100644
--- a/voxygen/anim/src/quadruped_low/breathe.rs
+++ b/voxygen/anim/src/quadruped_low/breathe.rs
@@ -3,8 +3,8 @@ use super::{
     QuadrupedLowSkeleton, SkeletonAttr,
 };
 use common::states::utils::StageSection;
+use std::f32::consts::FRAC_PI_2;
 //use std::ops::Rem;
-use std::f32::consts::PI;
 
 pub struct BreatheAnimation;
 
@@ -37,7 +37,7 @@ impl Animation for BreatheAnimation {
         let check = subtract - subtract.trunc();
         let mirror = (check - 0.5).signum();
         let twitch2 = mirror * (twitch * 20.0).sin() * pullback;
-        let twitch2alt = mirror * (twitch * 20.0 + PI / 2.0).sin() * pullback;
+        let twitch2alt = mirror * (twitch * 20.0 + FRAC_PI_2).sin() * pullback;
 
         let movement1abs = movement1base * pullback;
 
diff --git a/voxygen/anim/src/quadruped_low/idle.rs b/voxygen/anim/src/quadruped_low/idle.rs
index c0601d27d4..6a4f6ad831 100644
--- a/voxygen/anim/src/quadruped_low/idle.rs
+++ b/voxygen/anim/src/quadruped_low/idle.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     QuadrupedLowSkeleton, SkeletonAttr,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct IdleAnimation;
 
@@ -25,7 +25,7 @@ impl Animation for IdleAnimation {
 
         let slower = (anim_time * 1.25).sin();
         let slow = (anim_time * 2.5).sin();
-        let slowalt = (anim_time * 2.5 + PI / 2.0).sin();
+        let slowalt = (anim_time * 2.5 + FRAC_PI_2).sin();
 
         let dragon_look = Vec2::new(
             (global_time / 2.0 + anim_time / 8.0)
diff --git a/voxygen/anim/src/quadruped_medium/hoof.rs b/voxygen/anim/src/quadruped_medium/hoof.rs
index 7adf0c9403..8a28d06b13 100644
--- a/voxygen/anim/src/quadruped_medium/hoof.rs
+++ b/voxygen/anim/src/quadruped_medium/hoof.rs
@@ -3,7 +3,7 @@ use super::{
     QuadrupedMediumSkeleton, SkeletonAttr,
 };
 use common::states::utils::StageSection;
-use std::f32::consts::PI;
+use std::f32::consts::FRAC_PI_2;
 
 pub struct HoofAnimation;
 
@@ -40,7 +40,7 @@ impl Animation for HoofAnimation {
         let movement1abs = movement1base * pullback;
         let movement2abs = movement2base * pullback;
         let twitchleft = (twitch * 16.0).sin() * pullback * mirror;
-        let twitchright = (twitch * 8.0 + PI / 2.0).sin() * pullback * mirror;
+        let twitchright = (twitch * 8.0 + FRAC_PI_2).sin() * pullback * mirror;
 
         next.head.orientation = Quaternion::rotation_x(movement1abs * -0.6 + movement2abs * 0.6)
             * Quaternion::rotation_y(movement1 * 0.35 + movement2 * -0.15)
diff --git a/voxygen/anim/src/quadruped_medium/run.rs b/voxygen/anim/src/quadruped_medium/run.rs
index fcef48daeb..d041cc78fb 100644
--- a/voxygen/anim/src/quadruped_medium/run.rs
+++ b/voxygen/anim/src/quadruped_medium/run.rs
@@ -2,7 +2,10 @@ use super::{
     super::{vek::*, Animation},
     QuadrupedMediumSkeleton, SkeletonAttr,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{
+    f32::consts::{FRAC_PI_2, FRAC_PI_4, PI},
+    ops::Mul,
+};
 
 pub struct RunAnimation;
 
@@ -55,10 +58,10 @@ impl Animation for RunAnimation {
         );
 
         let speedadjust = if speed < 5.0 { 0.0 } else { speed / 24.0 };
-        let shift1 = speedadjust - PI / 2.0 - speedadjust * PI * 3.0 / 4.0;
-        let shift2 = speedadjust + PI / 2.0 + speedadjust * PI / 2.0;
-        let shift3 = speedadjust + PI / 4.0 - speedadjust * PI / 4.0;
-        let shift4 = speedadjust - PI * 3.0 / 4.0 + speedadjust * PI / 2.0;
+        let shift1 = speedadjust - FRAC_PI_2 - speedadjust * PI * 3.0 / 4.0;
+        let shift2 = speedadjust + FRAC_PI_2 + speedadjust * FRAC_PI_2;
+        let shift3 = speedadjust + FRAC_PI_4 - speedadjust * FRAC_PI_4;
+        let shift4 = speedadjust - PI * 3.0 / 4.0 + speedadjust * FRAC_PI_2;
 
         //FL
         let foot1a = (mixed_vel * (1.0) * lab * speedmult + 0.0 + canceler * 0.05 + shift1).sin(); //1.5
@@ -68,10 +71,11 @@ impl Animation for RunAnimation {
         let foot2b = (mixed_vel * (1.0) * lab * speedmult + 1.1 + shift2).sin(); //1.0
         //BL
         let foot3a = (mixed_vel * (1.0) * lab * speedmult + shift3).sin(); //0.0
-        let foot3b = (mixed_vel * (1.0) * lab * speedmult + 1.57 + shift3).sin(); //0.4
+        let foot3b = (mixed_vel * (1.0) * lab * speedmult + FRAC_PI_2 + shift3).sin(); //0.4
         //BR
         let foot4a = (mixed_vel * (1.0) * lab * speedmult + 0.0 + canceler * 0.05 + shift4).sin(); //0.3
-        let foot4b = (mixed_vel * (1.0) * lab * speedmult + 1.57 + canceler * 0.05 + shift4).sin(); //0.7
+        let foot4b =
+            (mixed_vel * (1.0) * lab * speedmult + FRAC_PI_2 + canceler * 0.05 + shift4).sin(); //0.7
         //
         let ori: Vec2<f32> = Vec2::from(orientation);
         let last_ori = Vec2::from(last_ori);
diff --git a/voxygen/anim/src/quadruped_small/idle.rs b/voxygen/anim/src/quadruped_small/idle.rs
index 88c9d34de5..3d9e76aa2e 100644
--- a/voxygen/anim/src/quadruped_small/idle.rs
+++ b/voxygen/anim/src/quadruped_small/idle.rs
@@ -2,7 +2,7 @@ use super::{
     super::{vek::*, Animation},
     QuadrupedSmallSkeleton, SkeletonAttr,
 };
-use std::{f32::consts::PI, ops::Mul};
+use std::{f32::consts::FRAC_PI_2, ops::Mul};
 
 pub struct IdleAnimation;
 
@@ -25,7 +25,7 @@ impl Animation for IdleAnimation {
 
         let slow = (anim_time * 3.5).sin();
 
-        let slow_alt = (anim_time * 3.5 + PI / 2.0).sin();
+        let slow_alt = (anim_time * 3.5 + FRAC_PI_2).sin();
 
         let head_look = Vec2::new(
             (global_time / 2.0 + anim_time / 8.0)
diff --git a/voxygen/anim/src/ship/idle.rs b/voxygen/anim/src/ship/idle.rs
index 915196a0fb..3375543052 100644
--- a/voxygen/anim/src/ship/idle.rs
+++ b/voxygen/anim/src/ship/idle.rs
@@ -21,7 +21,6 @@ impl Animation for IdleAnimation {
     const UPDATE_FN: &'static [u8] = b"ship_idle\0";
 
     #[cfg_attr(feature = "be-dyn-lib", export_name = "ship_idle")]
-    #[allow(clippy::approx_constant)] // TODO: Pending review in #587
     fn update_skeleton_inner<'a>(
         skeleton: &Self::Skeleton,
         (_active_tool_kind, _second_tool_kind, _global_time, acc_vel, orientation, last_ori): Self::Dependency<'a>,
diff --git a/voxygen/anim/src/theropod/run.rs b/voxygen/anim/src/theropod/run.rs
index 8d54e31d76..fe1e9348dd 100644
--- a/voxygen/anim/src/theropod/run.rs
+++ b/voxygen/anim/src/theropod/run.rs
@@ -1,7 +1,7 @@
 use super::{super::Animation, SkeletonAttr, TheropodSkeleton};
 //use std::{f32::consts::PI, ops::Mul};
 use super::super::vek::*;
-use std::f32::consts::PI;
+use std::f32::consts::{FRAC_PI_2, PI};
 
 pub struct RunAnimation;
 
@@ -43,10 +43,10 @@ impl Animation for RunAnimation {
 
         //FL
         let foot1a = (mixed_vel * 1.0 * lab * speedmult + 0.0 + PI).sin() * speednorm; //1.5
-        let foot1b = (mixed_vel * 1.0 * lab * speedmult + 1.57 + PI).sin() * speednorm; //1.9
+        let foot1b = (mixed_vel * 1.0 * lab * speedmult + FRAC_PI_2 + PI).sin() * speednorm; //1.9
         //FR
         let foot2a = (mixed_vel * 1.0 * lab * speedmult).sin() * speednorm; //1.2
-        let foot2b = (mixed_vel * 1.0 * lab * speedmult + 1.57).sin() * speednorm; //1.6
+        let foot2b = (mixed_vel * 1.0 * lab * speedmult + FRAC_PI_2).sin() * speednorm; //1.6
         let ori: Vec2<f32> = Vec2::from(orientation);
         let last_ori = Vec2::from(last_ori);
         let tilt = if ::vek::Vec2::new(ori, last_ori)
diff --git a/voxygen/src/hud/item_imgs.rs b/voxygen/src/hud/item_imgs.rs
index 443cee23c8..5c703aa0bc 100644
--- a/voxygen/src/hud/item_imgs.rs
+++ b/voxygen/src/hud/item_imgs.rs
@@ -11,7 +11,7 @@ use conrod_core::image::Id;
 use hashbrown::HashMap;
 use image::DynamicImage;
 use serde::{Deserialize, Serialize};
-use std::sync::Arc;
+use std::{f32::consts::PI, sync::Arc};
 use tracing::{error, warn};
 use vek::*;
 
@@ -84,9 +84,9 @@ impl ImageSpec {
             ImageSpec::VoxTrans(specifier, offset, [rot_x, rot_y, rot_z], zoom) => Graphic::Voxel(
                 graceful_load_segment_no_skin(specifier),
                 Transform {
-                    ori: Quaternion::rotation_x(rot_x * std::f32::consts::PI / 180.0)
-                        .rotated_y(rot_y * std::f32::consts::PI / 180.0)
-                        .rotated_z(rot_z * std::f32::consts::PI / 180.0),
+                    ori: Quaternion::rotation_x(rot_x * PI / 180.0)
+                        .rotated_y(rot_y * PI / 180.0)
+                        .rotated_z(rot_z * PI / 180.0),
                     offset: Vec3::from(*offset),
                     zoom: *zoom,
                     orth: true, // TODO: Is this what we want here? @Pfau
diff --git a/voxygen/src/render/pipelines/mod.rs b/voxygen/src/render/pipelines/mod.rs
index 592d1da64d..b97e13d77a 100644
--- a/voxygen/src/render/pipelines/mod.rs
+++ b/voxygen/src/render/pipelines/mod.rs
@@ -16,6 +16,7 @@ use super::{Consts, Texture};
 use crate::scene::camera::CameraMode;
 use bytemuck::{Pod, Zeroable};
 use common::terrain::BlockKind;
+use std::f32::consts::TAU;
 use vek::*;
 
 // TODO: auto insert these into shaders
@@ -150,7 +151,7 @@ impl Globals {
     }
 
     fn get_angle_rad(time_of_day: f64) -> f32 {
-        const TIME_FACTOR: f32 = (std::f32::consts::PI * 2.0) / (3600.0 * 24.0);
+        const TIME_FACTOR: f32 = TAU / (3600.0 * 24.0);
         time_of_day as f32 * TIME_FACTOR
     }
 
diff --git a/voxygen/src/scene/camera.rs b/voxygen/src/scene/camera.rs
index 87da4fbfee..5b57789826 100644
--- a/voxygen/src/scene/camera.rs
+++ b/voxygen/src/scene/camera.rs
@@ -2,6 +2,7 @@ use common::{terrain::TerrainGrid, vol::ReadVol};
 use common_base::span;
 use core::{f32::consts::PI, fmt::Debug};
 use num::traits::{real::Real, FloatConst};
+use std::f32::consts::FRAC_PI_2;
 use treeculler::Frustum;
 use vek::*;
 
@@ -62,7 +63,7 @@ fn clamp_and_modulate(ori: Vec3<f32>) -> Vec3<f32> {
         // Wrap camera yaw
         x: ori.x.rem_euclid(2.0 * PI),
         // Clamp camera pitch to the vertical limits
-        y: ori.y.min(PI / 2.0 - 0.0001).max(-PI / 2.0 + 0.0001),
+        y: ori.y.min(FRAC_PI_2 - 0.0001).max(-FRAC_PI_2 + 0.0001),
         // Wrap camera roll
         z: ori.z.rem_euclid(2.0 * PI),
     }
@@ -124,7 +125,7 @@ fn clamp_and_modulate(ori: Vec3<f32>) -> Vec3<f32> {
 ///     case) the change in the integer representation of the mantissa at z=n/2:
 ///
 ///     ```ignore
-///     e = floor(ln(near/(far - near))/ln(2))
+///     e = floor(ln(near/(far - near))/std::f32::consts::LN_2)
 ///     db/dz = 2^(2-e) / ((1 / far - 1 / near) * (far)^2)
 ///     ```
 ///
@@ -379,7 +380,7 @@ impl Camera {
             * Mat4::rotation_z(self.ori.z)
             * Mat4::rotation_x(self.ori.y)
             * Mat4::rotation_y(self.ori.x)
-            * Mat4::rotation_3d(PI / 2.0, -Vec4::unit_x())
+            * Mat4::rotation_3d(FRAC_PI_2, -Vec4::unit_x())
             * Mat4::translation_3d(-self.focus.map(|e| e.fract()));
         self.dependents.view_mat_inv = self.dependents.view_mat.inverted();
 
@@ -415,8 +416,8 @@ impl Camera {
         self.tgt_ori.x = (self.tgt_ori.x + delta.x).rem_euclid(2.0 * PI);
         // Clamp camera pitch to the vertical limits
         self.tgt_ori.y = (self.tgt_ori.y + delta.y)
-            .min(PI / 2.0 - 0.001)
-            .max(-PI / 2.0 + 0.001);
+            .min(FRAC_PI_2 - 0.001)
+            .max(-FRAC_PI_2 + 0.001);
         // Wrap camera roll
         self.tgt_ori.z = (self.tgt_ori.z + delta.z).rem_euclid(2.0 * PI);
     }
diff --git a/voxygen/src/session/mod.rs b/voxygen/src/session/mod.rs
index 42d122a510..aec47e0f79 100644
--- a/voxygen/src/session/mod.rs
+++ b/voxygen/src/session/mod.rs
@@ -46,6 +46,7 @@ use crate::{
 };
 use hashbrown::HashMap;
 use settings_change::Language::ChangeLanguage;
+use std::f32::consts::PI;
 #[cfg(feature = "egui-ui")]
 use voxygen_egui::EguiDebugInfo;
 
@@ -887,7 +888,7 @@ impl PlayState for SessionState {
                         + input_vec.x
                             * (3.0 - input_vec.y * 1.5 * if is_aiming { 1.5 } else { 1.0 })
                             * dt,
-                    std::f32::consts::PI * if is_aiming { 0.015 } else { 0.1 },
+                    PI * if is_aiming { 0.015 } else { 0.1 },
                     0.0,
                 ));
             }
diff --git a/voxygen/src/ui/img_ids.rs b/voxygen/src/ui/img_ids.rs
index 660675dc07..9d9e26c66f 100644
--- a/voxygen/src/ui/img_ids.rs
+++ b/voxygen/src/ui/img_ids.rs
@@ -3,7 +3,7 @@ use common::{
     assets::{self, AssetExt, DotVoxAsset, Error},
     figure::Segment,
 };
-use std::sync::Arc;
+use std::{f32::consts::FRAC_PI_2, sync::Arc};
 use vek::*;
 
 pub enum BlankGraphic {}
@@ -48,7 +48,7 @@ impl<'a> GraphicCreator<'a> for VoxelGraphic {
         Ok(Graphic::Voxel(
             load_segment(specifier)?,
             Transform {
-                ori: Quaternion::rotation_x(-std::f32::consts::PI / 2.0),
+                ori: Quaternion::rotation_x(-FRAC_PI_2),
                 ..Default::default()
             },
             SampleStrat::None,
@@ -62,7 +62,7 @@ impl<'a> GraphicCreator<'a> for VoxelSsGraphic {
         Ok(Graphic::Voxel(
             load_segment(specifier.0)?,
             Transform {
-                ori: Quaternion::rotation_x(-std::f32::consts::PI / 2.0),
+                ori: Quaternion::rotation_x(-FRAC_PI_2),
                 ..Default::default()
             },
             SampleStrat::SuperSampling(specifier.1),
@@ -76,7 +76,7 @@ impl<'a> GraphicCreator<'a> for VoxelSs4Graphic {
         Ok(Graphic::Voxel(
             load_segment(specifier)?,
             Transform {
-                ori: Quaternion::rotation_x(-std::f32::consts::PI / 2.0),
+                ori: Quaternion::rotation_x(-FRAC_PI_2),
                 ..Default::default()
             },
             SampleStrat::SuperSampling(4),
@@ -90,7 +90,7 @@ impl<'a> GraphicCreator<'a> for VoxelSs9Graphic {
         Ok(Graphic::Voxel(
             load_segment(specifier)?,
             Transform {
-                ori: Quaternion::rotation_x(-std::f32::consts::PI / 2.0),
+                ori: Quaternion::rotation_x(-FRAC_PI_2),
                 ..Default::default()
             },
             SampleStrat::SuperSampling(9),
@@ -104,7 +104,7 @@ impl<'a> GraphicCreator<'a> for VoxelPixArtGraphic {
         Ok(Graphic::Voxel(
             load_segment(specifier)?,
             Transform {
-                ori: Quaternion::rotation_x(-std::f32::consts::PI / 2.0),
+                ori: Quaternion::rotation_x(-FRAC_PI_2),
                 ..Default::default()
             },
             SampleStrat::PixelCoverage,
diff --git a/world/src/civ/mod.rs b/world/src/civ/mod.rs
index 8039a8bfd3..2a6388de74 100644
--- a/world/src/civ/mod.rs
+++ b/world/src/civ/mod.rs
@@ -23,6 +23,7 @@ use fxhash::FxHasher64;
 use hashbrown::{HashMap, HashSet};
 use rand::prelude::*;
 use rand_chacha::ChaChaRng;
+use std::f32::consts::FRAC_PI_2;
 use tracing::{debug, info, warn};
 use vek::*;
 
@@ -289,7 +290,7 @@ impl Civs {
 
         let path = (-100..100)
             .filter_map(|i: i32| {
-                let depth = (i.abs() as f32 / 100.0 * std::f32::consts::PI / 2.0).cos();
+                let depth = (i.abs() as f32 / 100.0 * FRAC_PI_2).cos();
                 vel = (vel
                     + Vec2::new(
                         ctx.rng.gen_range(-0.35..0.35),
diff --git a/world/src/layer/tree.rs b/world/src/layer/tree.rs
index baad42868d..0f8d59e603 100644
--- a/world/src/layer/tree.rs
+++ b/world/src/layer/tree.rs
@@ -16,7 +16,7 @@ use common::{
 use hashbrown::HashMap;
 use lazy_static::lazy_static;
 use rand::prelude::*;
-use std::{f32, ops::Range};
+use std::{f32, f32::consts::TAU, ops::Range};
 use vek::*;
 
 lazy_static! {
@@ -451,7 +451,7 @@ impl ProceduralTree {
                 .cross(Vec3::<f32>::zero().map(|_| rng.gen_range(-1.0..1.0)))
                 .normalized();
             let y_axis = dir.cross(x_axis).normalized();
-            let screw_shift = rng.gen_range(0.0..f32::consts::TAU);
+            let screw_shift = rng.gen_range(0.0..TAU);
 
             let splits = rng.gen_range(config.splits.clone()).round() as usize;
             for i in 0..splits {
@@ -459,7 +459,7 @@ impl ProceduralTree {
                 let dist = Lerp::lerp(rng.gen_range(0.0..1.0), proportion, config.proportionality);
 
                 const PHI: f32 = 0.618;
-                const RAD_PER_BRANCH: f32 = f32::consts::TAU * PHI;
+                const RAD_PER_BRANCH: f32 = TAU * PHI;
                 let screw = (screw_shift + i as f32 * RAD_PER_BRANCH).sin() * x_axis
                     + (screw_shift + i as f32 * RAD_PER_BRANCH).cos() * y_axis;
 
@@ -648,10 +648,9 @@ impl Branch {
                 {
                     let rpos = pos.xy() - p;
                     let stretch = 32.0;
-                    let stair_section =
-                        ((rpos.x as f32).atan2(rpos.y as f32) / (f32::consts::PI * 2.0) * stretch
-                            + pos.z)
-                            .rem_euclid(stretch);
+                    let stair_section = ((rpos.x as f32).atan2(rpos.y as f32) / TAU * stretch
+                        + pos.z)
+                        .rem_euclid(stretch);
                     (
                         stair_section < stair_thickness,
                         stair_section >= stair_thickness
diff --git a/world/src/sim/util.rs b/world/src/sim/util.rs
index a414f78f59..cd0b9544fa 100644
--- a/world/src/sim/util.rs
+++ b/world/src/sim/util.rs
@@ -581,10 +581,10 @@ pub struct HybridMulti {
 
 impl HybridMulti {
     pub const DEFAULT_FREQUENCY: f64 = 2.0;
-    pub const DEFAULT_LACUNARITY: f64 = /* std::f64::consts::PI * 2.0 / 3.0 */ 2.0;
+    pub const DEFAULT_LACUNARITY: f64 = /* std::f64::consts::TAU / 3.0 */ 2.0;
     pub const DEFAULT_OCTAVES: usize = 6;
     pub const DEFAULT_OFFSET: f64 = /* 0.25 *//* 0.5 */ 0.7;
-    // -ln(2^(-0.25))/ln(2) = 0.25
+    // -ln(2^(-0.25))/std::f32::consts::LN_2 = 0.25
     // 2^(-0.25) ~ 13/16
     pub const DEFAULT_PERSISTENCE: f64 = /* 0.25 *//* 0.5 */ 13.0 / 16.0;
     pub const DEFAULT_SEED: u32 = 0;
diff --git a/world/src/site/castle/mod.rs b/world/src/site/castle/mod.rs
index 655138e884..7929ccbd97 100644
--- a/world/src/site/castle/mod.rs
+++ b/world/src/site/castle/mod.rs
@@ -19,6 +19,7 @@ use common::{
 use core::f32;
 use rand::prelude::*;
 use serde::Deserialize;
+use std::f32::consts::TAU;
 use vek::*;
 
 struct Keep {
@@ -91,7 +92,7 @@ impl Castle {
 
             towers: (0..boundary_towers)
                 .map(|i| {
-                    let angle = (i as f32 / boundary_towers as f32) * f32::consts::PI * 2.0;
+                    let angle = (i as f32 / boundary_towers as f32) * TAU;
                     let dir = Vec2::new(angle.cos(), angle.sin());
                     let dist = radius as f32 + ((angle * boundary_noise).sin() - 1.0) * 40.0;
 
@@ -128,7 +129,7 @@ impl Castle {
             evil: ctx.rng.gen(),
             keeps: (0..keep_count)
                 .map(|i| {
-                    let angle = (i as f32 / keep_count as f32) * f32::consts::PI * 2.0;
+                    let angle = (i as f32 / keep_count as f32) * TAU;
                     let dir = Vec2::new(angle.cos(), angle.sin());
                     let dist =
                         (radius as f32 + ((angle * boundary_noise).sin() - 1.0) * 40.0) * 0.3;
diff --git a/world/src/site/settlement/building/archetype/keep.rs b/world/src/site/settlement/building/archetype/keep.rs
index bb1273c58d..432b7ee36f 100644
--- a/world/src/site/settlement/building/archetype/keep.rs
+++ b/world/src/site/settlement/building/archetype/keep.rs
@@ -10,6 +10,7 @@ use common::{
 };
 use rand::prelude::*;
 use serde::Deserialize;
+use std::f32::consts::TAU;
 use vek::*;
 
 #[derive(Deserialize)]
@@ -177,8 +178,7 @@ impl Archetype for Keep {
             if (pos.xy().magnitude_squared() as f32) < inner_radius.powi(2) {
                 stone
             } else if (pos.xy().magnitude_squared() as f32) < radius.powi(2) {
-                if ((pos.x as f32).atan2(pos.y as f32) / (std::f32::consts::PI * 2.0) * stretch
-                    + pos.z as f32)
+                if ((pos.x as f32).atan2(pos.y as f32) / TAU * stretch + pos.z as f32)
                     .rem_euclid(stretch)
                     < 1.5
                 {
diff --git a/world/src/site/settlement/mod.rs b/world/src/site/settlement/mod.rs
index 21fcb1baa8..aba6c5d984 100644
--- a/world/src/site/settlement/mod.rs
+++ b/world/src/site/settlement/mod.rs
@@ -41,6 +41,7 @@ use std::{
     cmp::{self, min},
     collections::VecDeque,
     f32,
+    f32::consts::{FRAC_PI_2, TAU},
     hash::BuildHasherDefault,
 };
 use vek::*;
@@ -241,8 +242,8 @@ impl Settlement {
         let river_offs = Vec2::new(rng.gen_range(-3..4), rng.gen_range(-3..4));
 
         for x in (0..100).map(|e| e as f32 / 100.0) {
-            let theta0 = x as f32 * f32::consts::PI * 2.0;
-            let theta1 = (x + 0.01) as f32 * f32::consts::PI * 2.0;
+            let theta0 = x as f32 * TAU;
+            let theta1 = (x + 0.01) as f32 * TAU;
 
             let pos0 = (river_dir * radius + Vec2::new(theta0.sin(), theta0.cos()) * radius)
                 .map(|e| e.floor() as i32)
@@ -641,7 +642,7 @@ impl Settlement {
                         Some(Plot::Town { .. }) => {
                             if let Some((_, path_nearest, _, _)) = col_sample.path {
                                 let path_dir = (path_nearest - wpos2d.map(|e| e as f32))
-                                    .rotated_z(f32::consts::PI / 2.0)
+                                    .rotated_z(FRAC_PI_2)
                                     .normalized();
                                 let is_lamp = if path_dir.x.abs() > path_dir.y.abs() {
                                     wpos2d.x as f32 % 15.0 / path_dir.dot(Vec2::unit_y()).abs()
diff --git a/world/src/site2/plot/dungeon.rs b/world/src/site2/plot/dungeon.rs
index 06664180cd..6ee1804e08 100644
--- a/world/src/site2/plot/dungeon.rs
+++ b/world/src/site2/plot/dungeon.rs
@@ -22,7 +22,7 @@ use fxhash::FxHasher64;
 use lazy_static::lazy_static;
 use rand::{prelude::*, seq::SliceRandom};
 use serde::Deserialize;
-use std::sync::Arc;
+use std::{f32::consts::TAU, sync::Arc};
 use vek::*;
 
 pub struct Dungeon {
@@ -948,8 +948,7 @@ pub fn spiral_staircase(
         if (pos.xy().magnitude_squared() as f32) < inner_radius.powi(2) {
             true
         } else if (pos.xy().magnitude_squared() as f32) < radius.powi(2) {
-            ((pos.x as f32).atan2(pos.y as f32) / (f32::consts::PI * 2.0) * stretch + pos.z as f32)
-                .rem_euclid(stretch)
+            ((pos.x as f32).atan2(pos.y as f32) / TAU * stretch + pos.z as f32).rem_euclid(stretch)
                 < 1.5
         } else {
             false
@@ -965,8 +964,7 @@ pub fn wall_staircase(
     Box::new(move |pos: Vec3<i32>| {
         let pos = pos - origin;
         if (pos.x.abs().max(pos.y.abs())) as f32 > 0.6 * radius {
-            ((pos.x as f32).atan2(pos.y as f32) / (f32::consts::PI * 2.0) * stretch + pos.z as f32)
-                .rem_euclid(stretch)
+            ((pos.x as f32).atan2(pos.y as f32) / TAU * stretch + pos.z as f32).rem_euclid(stretch)
                 < 1.0
         } else {
             false
@@ -980,7 +978,6 @@ pub fn inscribed_polystar(
     sides: usize,
 ) -> Box<dyn Fn(Vec3<i32>) -> bool> {
     Box::new(move |pos| {
-        use std::f32::consts::TAU;
         let rpos: Vec2<f32> = pos.xy().as_() - origin.as_();
         let is_border = rpos.magnitude_squared() > (radius - 2.0).powi(2);
         let is_line = (0..sides).into_iter().any(|i| {