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Rust crates

canvist_scene

The scene model behind canvist’s canvas: the design-tool sibling of canvist_model.

  • Nodes: pages, frames, groups, rectangles, ellipses, polygons and stars, vector paths, boolean operations, images, components, instances, and text frames that each hold a full canvist text document.
  • Schema: node types are registered by name. Several types can share a built-in behaviour, and custom types draw their own geometry, so plugins add a sticky frame or a generative shape without forking the model.
  • Props: typed core properties (transform, size, fills, strokes, effects, blend modes, constraints, auto-layout) plus custom values and per-property instance overrides.
  • Steps: five invertible edits (InsertNodes, RemoveNodes, Move, SetProp, Text) that map one-to-one onto Yjs operations, so undo and collaboration share one pipeline.
  • Fractional keys: siblings are ordered by keys that always fit between any two, so reordering touches one node.
  • JSON: a canonical flat format, plus a nested form with optional ids and keys that people and agents can write by hand.

Setting one property takes about 0.15 µs and reordering a layer about 0.6 µs, whether the scene has 100 nodes or 100,000. Run cargo bench -p canvist_scene to reproduce.

The design is in the canvas architecture.

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