1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
use super::{super::media::MediaMgr, AtlasSlice, CUBE};
use mt_net::NodeDef;
use rand::Rng;
use std::collections::HashMap;
pub(super) fn create_atlas(
nodes: &mut HashMap<u16, NodeDef>,
media: &MediaMgr,
) -> (image::RgbaImage, Vec<AtlasSlice>) {
let mut rng = rand::thread_rng();
let mut allocator = guillotiere::SimpleAtlasAllocator::new(guillotiere::size2(1, 1));
let mut textures = Vec::new();
for node in nodes.values_mut() {
let tiles = std::iter::empty()
.chain(node.tiles.iter_mut())
.chain(node.overlay_tiles.iter_mut())
.chain(node.special_tiles.iter_mut());
let load_texture = |texture: &str| {
let payload = media
.get(texture)
.ok_or_else(|| format!("texture not found: {texture}"))?;
image::load_from_memory(payload)
.or_else(|_| image::load_from_memory_with_format(payload, image::ImageFormat::Tga))
.map_err(|e| format!("failed to load texture {texture}: {e}"))
.map(|x| image::imageops::flip_vertical(&x))
};
let mut make_texture = |texture: &str| {
texture
.split('^')
.map(|part| match load_texture(part) {
Ok(v) => v,
Err(e) => {
if !texture.is_empty() && !texture.contains('[') {
eprintln!("{e}");
}
let mut img = image::RgbImage::new(1, 1);
rng.fill(&mut img.get_pixel_mut(0, 0).0);
image::DynamicImage::from(img).to_rgba8()
}
})
.reduce(|mut base, top| {
image::imageops::overlay(&mut base, &top, 0, 0);
base
})
.unwrap()
};
let mut id_map = HashMap::new();
for tile in tiles {
tile.texture.custom = *id_map.entry(tile.texture.name.clone()).or_insert_with(|| {
let img = make_texture(&tile.texture.name);
let dimensions = img.dimensions();
let size = guillotiere::size2(dimensions.0 as i32, dimensions.1 as i32);
loop {
match allocator.allocate(size) {
None => {
let mut atlas_size = allocator.size();
atlas_size.width *= 2;
atlas_size.height *= 2;
allocator.grow(atlas_size);
}
Some(rect) => {
let id = textures.len();
textures.push((img, rect));
return id;
}
}
}
})
}
}
let size = allocator.size();
let mut atlas = image::RgbaImage::new(size.width as u32, size.height as u32);
let slices = textures
.into_iter()
.map(|(img, rect)| {
let w = size.width as f32;
let h = size.height as f32;
let x = (rect.min.x as f32 / w)..(rect.max.x as f32 / w);
let y = (rect.min.y as f32 / h)..(rect.max.y as f32 / h);
use image::GenericImage;
atlas
.copy_from(&img, rect.min.x as u32, rect.min.y as u32)
.unwrap();
use lerp::Lerp;
use std::array::from_fn as array;
let rect = [x, y];
let cube_tex_coords =
array(|f| array(|v| array(|i| rect[i].start.lerp(rect[i].end, CUBE[f][v].1[i]))));
AtlasSlice { cube_tex_coords }
})
.collect();
(atlas, slices)
}
|
