tex_packer_core/
export.rs

1use crate::model::Atlas;
2use serde::Serialize;
3use serde_json::{Value, json};
4
5/// Serialize the whole `Atlas` as a JSON object `{ pages, meta }` (array-of-pages style).
6/// Suitable for generic tooling and simple consumption.
7pub fn to_json_array<K: ToString + Clone + Serialize>(atlas: &Atlas<K>) -> Value {
8    // Build array-of-pages with per-frame fields using camelCase for source metadata,
9    // consistent with the hash schema naming.
10    let pages_val = atlas
11        .pages
12        .iter()
13        .map(|p| {
14            let frames_val: Vec<Value> = p
15                .frames
16                .iter()
17                .map(|fr| {
18                    let frame = json!({"x": fr.frame.x, "y": fr.frame.y, "w": fr.frame.w, "h": fr.frame.h});
19                    let sprite_source_size = json!({"x": fr.source.x, "y": fr.source.y, "w": fr.source.w, "h": fr.source.h});
20                    let source_size = json!({"w": fr.source_size.0, "h": fr.source_size.1});
21                    let pivot = json!({"x": 0.5, "y": 0.5});
22                    json!({
23                        "key": fr.key.to_string(),
24                        "frame": frame,
25                        "rotated": fr.rotated,
26                        "trimmed": fr.trimmed,
27                        "spriteSourceSize": sprite_source_size,
28                        "sourceSize": source_size,
29                        "pivot": pivot
30                    })
31                })
32                .collect();
33            json!({
34                "id": p.id,
35                "width": p.width,
36                "height": p.height,
37                "frames": frames_val,
38            })
39        })
40        .collect::<Vec<_>>();
41    json!({"pages": pages_val, "meta": &atlas.meta})
42}
43
44/// Flatten frames keyed by name, include page id/size hints.
45/// Shape: `{ frames: { name: { frame, rotated, trimmed, spriteSourceSize, sourceSize, pivot, page, pageSize } }, meta }`.
46/// Compatible with many engine pipelines expecting TexturePacker-like JSON hash.
47pub fn to_json_hash<K: ToString + Clone>(atlas: &Atlas<K>) -> Value {
48    // Flatten frames keyed by name, include page info
49    let mut frames = serde_json::Map::new();
50    for page in &atlas.pages {
51        for fr in &page.frames {
52            let key = fr.key.to_string();
53            let frame = json!({"x": fr.frame.x, "y": fr.frame.y, "w": fr.frame.w, "h": fr.frame.h});
54            let sprite_source_size =
55                json!({"x": fr.source.x, "y": fr.source.y, "w": fr.source.w, "h": fr.source.h});
56            let source_size = json!({"w": fr.source_size.0, "h": fr.source_size.1});
57            let pivot = json!({"x": 0.5, "y": 0.5});
58            frames.insert(
59                key,
60                json!({
61                    "frame": frame,
62                    "rotated": fr.rotated,
63                    "trimmed": fr.trimmed,
64                    "spriteSourceSize": sprite_source_size,
65                    "sourceSize": source_size,
66                    "pivot": pivot,
67                    "page": page.id,
68                    "pageSize": {"w": page.width, "h": page.height},
69                }),
70            );
71        }
72    }
73    json!({ "frames": frames, "meta": &atlas.meta })
74}
tex_packer_core/export.rs

tex_packer_core/
export.rs
