62 lines
1.5 KiB
Rust
62 lines
1.5 KiB
Rust
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#![warn(missing_docs)]
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//! This crate creates texture atlases from an asset tree.
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//! The main interface for this crate is ... TODO
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use std::{
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collections::HashMap,
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path::{Path, PathBuf},
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};
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use serde::{Deserialize, Serialize};
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/// The location of a single image in a sprite atlas
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#[derive(Debug, Serialize, Deserialize, Clone)]
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pub struct SpriteAtlasImage {
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/// The index of the atlas this image is in
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pub atlas: usize,
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/// x-position of this image
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/// (between 0 and 1, using wgpu texture coordinates)
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pub x: f32,
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/// y-position of this image
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/// (between 0 and 1, using wgpu texture coordinates)
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pub y: f32,
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/// Width of this image
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/// (between 0 and 1, using wgpu texture coordinates)
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pub w: f32,
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/// Height of this image
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/// (between 0 and 1, using wgpu texture coordinates)
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pub h: f32,
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}
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/// A map between file paths (relative to the root asset dir)
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/// and [`AtlasTexture`]s.
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#[derive(Debug, Serialize, Deserialize, Clone)]
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pub struct SpriteAtlasIndex {
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pub(crate) index: HashMap<PathBuf, SpriteAtlasImage>,
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}
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impl SpriteAtlasIndex {
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/// Make an empty [`SpriteAtlasIndex`]
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pub fn new() -> Self {
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Self {
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index: HashMap::new(),
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}
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}
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/// Make an empty [`SpriteAtlasIndex`]
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pub fn insert(&mut self, path: PathBuf, atlasimage: SpriteAtlasImage) {
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self.index.insert(path, atlasimage);
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}
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/// Get an [`AtlasImage`] for a file `p`.
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/// Paths must be relative to the root of the asset directory.
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pub fn get(&self, p: &Path) -> Option<&SpriteAtlasImage> {
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self.index.get(p)
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}
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}
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