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Reduce number of map layers and remove unneeded alpha channel

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This commit is contained in:
James Melkonian 2021-07-24 19:31:31 -07:00
parent 37077b5703
commit 54eb97b9de
4 changed files with 87 additions and 159 deletions
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141
client/src/lib.rs
View File

@ -350,8 +350,6 @@ impl Client {
// Redraw map (with shadows this time).
let mut world_map_rgba = vec![0u32; rgba.size().product() as usize];
let mut world_map_political = vec![0u32; rgba.size().product() as usize];
let mut world_map_rgba_half_alpha = vec![0u32; rgba.size().product() as usize];
let mut world_map_topo = vec![0u32; rgba.size().product() as usize];
let mut map_config = common::terrain::map::MapConfig::orthographic(
map_size_lg,
@ -385,16 +383,14 @@ impl Client {
gain,
is_contours,
is_height_map,
is_political,
is_roads,
rgba_alpha,
is_stylized_topo,
..
} = *map_config;
let mut is_contour_line = false;
let mut is_border = false;
let (rgba, alt, downhill_wpos) = if bounds_check(pos) {
let (rgb, alt, downhill_wpos) = if bounds_check(pos) {
let posi = pos.y as usize * map_size.x as usize + pos.x as usize;
let [r, g, b, a] = rgba[pos].to_le_bytes();
let [r, g, b, _a] = rgba[pos].to_le_bytes();
let is_water = r == 0 && b > 102 && g < 77;
let alti = alt[pos];
// Compute contours (chunks are assigned in the river code below)
@ -416,7 +412,7 @@ impl Client {
let [nr, ng, nb, _na] = rgba.raw()[nposi].to_le_bytes();
let n_is_water = nr == 0 && nb > 102 && ng < 77;
if !is_border && is_political && is_water && !n_is_water {
if !is_border && is_water && !n_is_water {
is_border = true;
}
@ -437,57 +433,64 @@ impl Client {
) * TerrainChunkSize::RECT_SIZE.map(|e| e as i32),
)
};
(Rgba::new(r, g, b, a), alti, downhill_wpos)
(Rgb::new(r, g, b), alti, downhill_wpos)
} else {
(Rgba::zero(), 0, None)
(Rgb::zero(), 0, None)
};
let alt = f64::from(rescale_height(scale_height_big(alt)));
let wpos = pos * TerrainChunkSize::RECT_SIZE.map(|e| e as i32);
let downhill_wpos = downhill_wpos
.unwrap_or(wpos + TerrainChunkSize::RECT_SIZE.map(|e| e as i32));
let is_path = rgba.r == 0x37 && rgba.g == 0x29 && rgba.b == 0x23;
let rgba = rgba.map(|e: u8| e as f64 / 255.0);
let rgba = if is_height_map {
let is_path = rgb.r == 0x37 && rgb.g == 0x29 && rgb.b == 0x23;
let rgb = rgb.map(|e: u8| e as f64 / 255.0);
let is_water = rgb.r == 0.0 && rgb.b > 0.4 && rgb.g < 0.3;
let rgb = if is_height_map {
if is_path {
// Path color is Rgb::new(0x37, 0x29, 0x23)
Rgba::new(0.9, 0.9, 0.63, 1.0)
} else if rgba.r == 0.0 && rgba.b > 0.4 && rgba.g < 0.3 {
// Water
Rgba::new(0.23, 0.47, 0.53, 0.5)
Rgb::new(0.9, 0.9, 0.63)
} else if is_water {
Rgb::new(0.23, 0.47, 0.53)
} else if is_contours && is_contour_line {
// Color contour lines
Rgba::new(0.15, 0.15, 0.15, 0.5)
Rgb::new(0.15, 0.15, 0.15)
} else {
// Color hill shading
let lightness = (alt + 0.2).min(1.0) as f64;
Rgba::new(lightness, 0.9 * lightness, 0.5 * lightness, 0.5)
Rgb::new(lightness, 0.9 * lightness, 0.5 * lightness)
}
} else if is_roads && is_path {
Rgba::new(0.9, 0.9, 0.63, 1.0)
} else if is_political {
} else if is_stylized_topo {
if is_path {
Rgba::new(0.3, 0.3, 0.3, 1.0)
} else if is_border {
Rgba::new(0.0, 0.0, 0.0, 1.0)
Rgb::new(0.9, 0.9, 0.63)
} else if is_water {
if is_border {
Rgb::new(0.10, 0.34, 0.50)
} else {
Rgb::new(0.23, 0.47, 0.63)
}
} else if is_contour_line {
Rgb::new(0.25, 0.25, 0.25)
} else {
Rgba::new(1.0, 0.9, 0.6, 1.0)
// Stylized colors
Rgb::new(
(rgb.r + 0.25).min(1.0),
(rgb.g + 0.23).min(1.0),
(rgb.b + 0.10).min(1.0),
)
}
} else if is_contours && is_contour_line {
Rgba::new(0.15, 0.15, 0.15, 0.8)
} else {
Rgba::new(rgba.r, rgba.g, rgba.b, rgba_alpha)
Rgb::new(rgb.r, rgb.g, rgb.b)
}
.map(|e| (e * 255.0) as u8);
common::terrain::map::MapSample {
rgba,
rgb,
alt,
downhill_wpos,
connections: None,
is_path,
}
}
// Generate standard shaded map
map_config.is_shaded = true;
map_config.rgba_alpha = 1.0;
map_config.generate(
|pos| {
sample_pos(
@ -513,64 +516,9 @@ impl Client {
u32::from_le_bytes([r, g, b, a]);
},
);
map_config.is_political = true;
map_config.generate(
|pos| {
sample_pos(
&map_config,
pos,
&alt,
&rgba,
&map_size,
&map_size_lg,
max_height,
)
},
|wpos| {
let pos = wpos.map2(TerrainChunkSize::RECT_SIZE, |e, f| e / f as i32);
rescale_height(if bounds_check(pos) {
scale_height_big(alt[pos])
} else {
0.0
})
},
|pos, (r, g, b, a)| {
world_map_political[pos.y * map_size.x as usize + pos.x] =
u32::from_le_bytes([r, g, b, a]);
},
);
map_config.is_shaded = false;
map_config.rgba_alpha = 0.5;
map_config.is_political = false;
map_config.generate(
|pos| {
sample_pos(
&map_config,
pos,
&alt,
&rgba,
&map_size,
&map_size_lg,
max_height,
)
},
|wpos| {
let pos = wpos.map2(TerrainChunkSize::RECT_SIZE, |e, f| e / f as i32);
rescale_height(if bounds_check(pos) {
scale_height_big(alt[pos])
} else {
0.0
})
},
|pos, (r, g, b, a)| {
world_map_rgba_half_alpha[pos.y * map_size.x as usize + pos.x] =
u32::from_le_bytes([r, g, b, a]);
},
);
// Generate topographic map
// Generate map with topographical lines and stylized colors
map_config.is_contours = true;
map_config.is_roads = true;
map_config.is_stylized_topo = true;
map_config.generate(
|pos| {
sample_pos(
@ -597,9 +545,9 @@ impl Client {
},
);
ping_stream.send(PingMsg::Ping)?;
let make_raw = |rgba| -> Result<_, Error> {
let make_raw = |rgb| -> Result<_, Error> {
let mut raw = vec![0u8; 4 * world_map_rgba.len()];
LittleEndian::write_u32_into(rgba, &mut raw);
LittleEndian::write_u32_into(rgb, &mut raw);
Ok(Arc::new(
image::DynamicImage::ImageRgba8({
// Should not fail if the dimensions are correct.
@ -615,16 +563,9 @@ impl Client {
ping_stream.send(PingMsg::Ping)?;
let lod_base = rgba;
let lod_alt = alt;
let world_map_rgba_img = make_raw(&world_map_rgba)?;
let world_map_political_img = make_raw(&world_map_political)?;
let world_map_rgba_half_alpha_img = make_raw(&world_map_rgba_half_alpha)?;
let world_map_rgb_img = make_raw(&world_map_rgba)?;
let world_map_topo_img = make_raw(&world_map_topo)?;
let world_map_layers = vec![
world_map_rgba_img,
world_map_political_img,
world_map_rgba_half_alpha_img,
world_map_topo_img,
];
let world_map_layers = vec![world_map_rgb_img, world_map_topo_img];
let horizons = (west.0, west.1, east.0, east.1)
.into_par_iter()
.map(|(wa, wh, ea, eh)| u32::from_le_bytes([wa, wh, ea, eh]))

95
common/src/terrain/map.rs
View File

@ -326,18 +326,10 @@ pub struct MapConfig<'a> {
///
/// Defaults to false
pub is_height_map: bool,
/// If true, terrain is white, rivers, borders, and roads are black.
/// Applies contour lines as well as color modifications
///
/// Defaults to false
pub is_political: bool,
/// If true, roads are colored on top of everything else
///
/// Defaults to false
pub is_roads: bool,
/// Alpha value for rgba. Handled by the sample_pos closure
///
/// Defaults to 1.0
pub rgba_alpha: f64,
pub is_stylized_topo: bool,
}
pub const QUADRANTS: usize = 4;
@ -374,7 +366,7 @@ pub struct Connection {
pub struct MapSample {
/// the base RGB color for a particular map pixel using the current settings
/// (i.e. the color *without* lighting).
pub rgba: Rgba<u8>,
pub rgb: Rgb<u8>,
/// Surface altitude information
/// (correctly reflecting settings like is_basement and is_water)
pub alt: f64,
@ -387,8 +379,6 @@ pub struct MapSample {
/// Connections at each index correspond to the same index in
/// NEIGHBOR_DELTA.
pub connections: Option<[Option<Connection>; 8]>,
/// If the chunk contains a path
pub is_path: bool,
}
impl<'a> MapConfig<'a> {
@ -420,9 +410,7 @@ impl<'a> MapConfig<'a> {
is_debug: false,
is_contours: false,
is_height_map: false,
is_political: false,
is_roads: false,
rgba_alpha: 1.0,
is_stylized_topo: false,
}
}
@ -459,6 +447,7 @@ impl<'a> MapConfig<'a> {
light_direction,
horizons,
is_shaded,
is_stylized_topo,
// is_debug,
..
} = *self;
@ -509,7 +498,7 @@ impl<'a> MapConfig<'a> {
};
let MapSample {
rgba,
rgb,
alt,
downhill_wpos,
..
@ -517,8 +506,7 @@ impl<'a> MapConfig<'a> {
let alt = alt as f32;
let wposi = pos * TerrainChunkSize::RECT_SIZE.map(|e| e as i32);
let rgb = Rgb::new(rgba.r, rgba.g, rgba.b).map(|e| e as f64 / 255.0);
let mut rgba = rgba.map(|e| e as f64 / 255.0);
let mut rgb = rgb.map(|e| e as f64 / 255.0);
// Material properties:
//
@ -594,7 +582,7 @@ impl<'a> MapConfig<'a> {
if has_river {
let water_rgb = Rgb::new(0, ((g_water) * 1.0) as u8, ((b_water) * 1.0) as u8)
.map(|e| e as f64 / 255.0);
rgba = Rgba::new(water_rgb.r, water_rgb.g, water_rgb.b, rgba.a);
rgb = water_rgb;
k_s = Rgb::new(1.0, 1.0, 1.0);
k_d = water_rgb;
k_a = water_rgb;
@ -652,34 +640,34 @@ impl<'a> MapConfig<'a> {
}
} */
let shade_frac = horizon_map
.and_then(|(angles, heights)| {
chunk_idx
.and_then(|chunk_idx| angles.get(chunk_idx))
.map(|&e| (e as f64, heights))
})
.and_then(|(e, heights)| {
chunk_idx
.and_then(|chunk_idx| heights.get(chunk_idx))
.map(|&f| (e, f as f64))
})
.map(|(angle, height)| {
let w = 0.1;
let height = (height - f64::from(alt * gain)).max(0.0);
if angle != 0.0 && light_direction.x != 0.0 && height != 0.0 {
let deltax = height / angle;
let lighty = (light_direction.y / light_direction.x * deltax).abs();
let deltay = lighty - height;
let s = (deltay / deltax / w).min(1.0).max(0.0);
// Smoothstep
s * s * (3.0 - 2.0 * s)
} else {
1.0
}
})
.unwrap_or(1.0);
let rgb = if is_shaded {
let shade_frac = horizon_map
.and_then(|(angles, heights)| {
chunk_idx
.and_then(|chunk_idx| angles.get(chunk_idx))
.map(|&e| (e as f64, heights))
})
.and_then(|(e, heights)| {
chunk_idx
.and_then(|chunk_idx| heights.get(chunk_idx))
.map(|&f| (e, f as f64))
})
.map(|(angle, height)| {
let w = 0.1;
let height = (height - f64::from(alt * gain)).max(0.0);
if angle != 0.0 && light_direction.x != 0.0 && height != 0.0 {
let deltax = height / angle;
let lighty = (light_direction.y / light_direction.x * deltax).abs();
let deltay = lighty - height;
let s = (deltay / deltax / w).min(1.0).max(0.0);
// Smoothstep
s * s * (3.0 - 2.0 * s)
} else {
1.0
}
})
.unwrap_or(1.0);
// Phong reflection model with shadows:
//
// I_p = k_a i_a + shadow * Σ {m ∈ lights} (k_d (L_m ⋅ N) i_m,d + k_s (R_m ⋅
@ -687,7 +675,11 @@ impl<'a> MapConfig<'a> {
//
// where for the whole scene,
// i_a = (RGB) intensity of ambient lighting component
let i_a = Rgb::new(0.1, 0.1, 0.1);
let i_a = if is_stylized_topo {
Rgb::new(0.4, 0.4, 0.4)
} else {
Rgb::new(0.1, 0.1, 0.1)
};
// V = direction pointing towards the viewer (e.g. virtual camera).
let v = Vec3::new(0.0, 0.0, -1.0).normalized();
@ -720,14 +712,13 @@ impl<'a> MapConfig<'a> {
let ambient = k_a * i_a;
let diffuse = k_d * lambertian * i_m_d;
let specular = k_s * spec_angle.powf(alpha) * i_m_s;
let shadow_rgb = (ambient + shadow * (diffuse + specular)).map(|e| e.min(1.0));
Rgba::new(shadow_rgb.r, shadow_rgb.g, shadow_rgb.b, 1.0)
(ambient + shadow * (diffuse + specular)).map(|e| e.min(1.0))
} else {
rgba
rgb
}
.map(|e| (e * 255.0) as u8);
let rgba = (rgb.r, rgb.g, rgb.b, rgb.a);
let rgba = (rgb.r, rgb.g, rgb.b, 255);
write_pixel(Vec2::new(i, j), rgba);
});

7
world/examples/water.rs
View File

@ -96,10 +96,9 @@ fn main() {
} else {
MapSample {
alt: 0.0,
rgba: Rgba::new(0, 0, 0, 255),
rgb: Rgb::new(0, 0, 0),
connections: None,
downhill_wpos: (pos + 1) * TerrainChunkSize::RECT_SIZE.map(|e| e as i32),
is_path: false,
}
}
};
@ -186,9 +185,7 @@ fn main() {
is_debug: true,
is_contours: false,
is_height_map: false,
is_political: false,
is_roads: false,
rgba_alpha: 1.0,
is_stylized_topo: false,
};
if samples_changed {

3
world/src/sim/map.rs
View File

@ -248,7 +248,7 @@ pub fn sample_pos(
};
MapSample {
rgba: Rgba::new(rgb.r, rgb.g, rgb.b, 255),
rgb: Rgb::new(rgb.r, rgb.g, rgb.b),
alt: if is_water {
true_alt.max(true_water_alt)
} else {
@ -260,6 +260,5 @@ pub fn sample_pos(
} else {
None
},
is_path,
}
}