cleanup some unused functions, which were exported but never used

world/src/sim/erosion.rs

@@ -28,6 +28,7 @@ pub type Alt = f64;
 pub type Compute = f64;
 pub type Computex8 = [Compute; 8];
 
+/* code used by sharp in future
 /// Compute the water flux at all chunks, given a list of chunk indices sorted
 /// by increasing height.
 pub fn get_drainage(
@@ -56,6 +57,7 @@ pub fn get_drainage(
     });
     flux
 }
+*/
 
 /// Compute the water flux at all chunks for multiple receivers, given a list of
 /// chunk indices sorted by increasing height and weights for each receiver.
@@ -1723,7 +1725,7 @@ fn erode(
 /// http://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/sous_copyright/010031925.pdf
 ///
 /// See https://github.com/mewo2/terrain/blob/master/terrain.js
-pub fn fill_sinks<F: Float + Send + Sync>(
+pub(crate) fn fill_sinks<F: Float + Send + Sync>(
     map_size_lg: MapSizeLg,
     h: impl Fn(usize) -> F + Sync,
     is_ocean: impl Fn(usize) -> bool + Sync,

world/src/sim/mod.rs

@@ -9,18 +9,21 @@ mod way;
 use self::erosion::Compute;
 pub use self::{
     diffusion::diffusion,
-    erosion::{
-        do_erosion, fill_sinks, get_drainage, get_lakes, get_multi_drainage, get_multi_rec,
-        get_rivers, mrec_downhill, Alt, RiverData, RiverKind,
-    },
     location::Location,
     map::{sample_pos, sample_wpos},
-    util::{
+    util::get_horizon_map,
-        cdf_irwin_hall, downhill, get_horizon_map, get_oceans, local_cells, map_edge_factor,
-        uniform_noise, uphill, InverseCdf, ScaleBias,
-    },
     way::{Cave, Path, Way},
 };
+pub(crate) use self::{
+    erosion::{
+        do_erosion, fill_sinks, get_lakes, get_multi_drainage, get_multi_rec, get_rivers, Alt,
+        RiverData, RiverKind,
+    },
+    util::{
+        cdf_irwin_hall, downhill, get_oceans, local_cells, map_edge_factor, uniform_noise, uphill,
+        InverseCdf,
+    },
+};
 
 use crate::{
     all::{Environment, ForestKind, TreeAttr},

world/src/sim/util.rs

@@ -771,6 +771,7 @@ impl NoiseFn<[f64; 4]> for HybridMulti {
     }
 }
 
+/* code used by sharp in future
 /// Noise function that applies a scaling factor and a bias to the output value
 /// from the source function.
 ///
@@ -810,3 +811,4 @@ impl<'a, F: NoiseFn<T> + 'a, T> NoiseFn<T> for ScaleBias<'a, F> {
     #[cfg(target_os = "emscripten")]
     fn get(&self, point: T) -> f64 { (self.source.get(point) * self.scale) + self.bias }
 }
+ */