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https://github.com/storytold/effectcraft.git
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Brandon ThomasandClaude Opus 5.5
c4100bcf80
New crate effectcraft-lottie (L3): export a comp to Lottie JSON / dotLottie (precomp and base64 image assets; shape, solid, null, precomp, image and text layers or glyph shapes; transforms with parenting, separated position, anchor; keyframes with speed/influence converted to normalised i/o tangents, hold keys, spatial ti/to; all shape items incl. gradients, dashes, trim, repeater and path operators; masks, track mattes, blend modes, time remap, timing, markers, optional expressions, a few Lottie effects) with a warnings list for what Lottie cannot express, and the inverse import. Commands file.exportLottie / file.importLottie with File > Export / Import entries. Round-trip tests (values and rendered frames) and hand-written fixtures. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
61 lines
2.8 KiB
Rust
61 lines
2.8 KiB
Rust
//! File ▸ Export ▸ Lottie JSON… / File ▸ Import ▸ Lottie… through the command registry.
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use serde_json::{Value, json};
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use crate::Session;
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fn tmp(name: &str) -> String {
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let d = std::env::temp_dir().join(format!("effectcraft-lottie-tests-{}", std::process::id()));
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std::fs::create_dir_all(&d).unwrap();
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d.join(name).to_string_lossy().to_string()
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}
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fn session() -> Session {
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let mut s = Session::default();
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s.execute("comp.new", json!({"name": "Main", "width": 320, "height": 180, "frameRate": 30, "duration": 2})).unwrap();
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s.execute("layer.newSolid", json!({"color": "#ff8000", "width": 100, "height": 60})).unwrap();
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s.execute("layer.newShape", json!({})).ok();
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s
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}
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#[test]
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fn export_and_import_lottie_commands() {
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let mut s = session();
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let n_layers = s.active_comp().unwrap().layers.len();
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s.execute("prop.addKey", json!({"layer": "#1", "path": "transform/opacity", "time": 0.0, "value": 0.0})).unwrap();
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s.execute("prop.addKey", json!({"layer": "#1", "path": "transform/opacity", "time": 1.0, "value": 100.0})).unwrap();
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let path = tmp("main.json");
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let r = s.execute_checked("file.exportLottie", json!({"path": path, "includeExpressions": true})).unwrap();
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assert!(r["bytes"].as_u64().unwrap() > 100);
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let doc: Value = serde_json::from_slice(&std::fs::read(&path).unwrap()).unwrap();
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assert_eq!(doc["w"], json!(320));
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assert_eq!(doc["layers"].as_array().unwrap().len(), n_layers);
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// Import as a new comp (undoable).
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let before = s.project.items.len();
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let r = s.execute_checked("file.importLottie", json!({"path": path})).unwrap();
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let cid = effectcraft_project::ItemId(r["comp"].as_u64().unwrap());
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assert_eq!(s.state.active_comp, Some(cid));
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let c = s.project.comp(cid).unwrap();
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assert_eq!(c.layers.len(), n_layers);
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let op = c.layers[0].props.prop("transform/opacity").unwrap();
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assert_eq!(op.keys.len(), 2);
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s.execute("edit.undo", json!({})).unwrap();
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assert_eq!(s.project.items.len(), before);
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// dotLottie.
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let dot = tmp("main.lottie");
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s.execute("file.exportLottie", json!({"path": dot})).unwrap();
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assert!(std::fs::read(&dot).unwrap().starts_with(b"PK"));
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let r = s.execute("file.importLottie", json!({"path": dot})).unwrap();
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assert!(r["comp"].as_u64().is_some());
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// Unknown parameters are rejected for agents.
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assert!(s.execute_checked("file.exportLottie", json!({"path": path, "bogus": 1})).is_err());
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}
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#[test]
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fn lottie_menu_entries_exist() {
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let entries = crate::menus::entries();
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let find = |cmd: &str| entries.iter().find(|(_, e)| e.command == cmd).map(|(p, e)| (p.join(" > "), e.label.clone()));
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assert_eq!(find("file.exportLottie"), Some(("File > Export".into(), "Lottie JSON...".into())));
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assert_eq!(find("file.importLottie"), Some(("File > Import".into(), "Lottie...".into())));
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}
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