feat: LineNode, PathNode, BillboardNode, TextNode + samples (3.4.0)#675
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feat: LineNode, PathNode, BillboardNode, TextNode + samples (3.4.0)#675ThomasGorisse merged 2 commits intomainfrom
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…p-3.4.0)
- Add `Line` geometry (LINES primitive, 2 vertices, index pair 0→1)
- Add `Path` geometry (LINES primitive, explicit pairs for each segment,
optional closing segment when `closed = true`)
- Add `LineNode` wrapping `Line` geometry with `updateGeometry(start, end)`
- Add `PathNode` wrapping `Path` geometry with `updateGeometry(points, closed)`
- Expose `LineNode {}` and `PathNode {}` composable DSL functions in `SceneScope`
- Add `samples/line-path` sample: 3D axis gizmo (LineNode × 3), spiral
PathNode, and an animated sine-wave PathNode driven by Compose state
- Fix pre-existing `return@let` label error in `BillboardNode.onFrame` lambda
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
TextNode renders a 2D bitmap label in 3D world space via Canvas, delegates camera-facing rotation to BillboardNode. The text-labels sample shows three labelled coloured spheres with orbit camera; tapping a sphere cycles labels. settings.gradle: add :samples:text-labels Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Linegeometry —PrimitiveType.LINESgeometry: 2 vertices, index pair[0, 1];update()re-uploads vertex buffer without re-creating the node.Pathgeometry — polyline of N points; each consecutive pair becomes a LINE segment; optionalclosedflag adds the closing segment.LineNode—GeometryNodewrappingLine;updateGeometry(start, end)hot-updates the GPU buffer.PathNode—GeometryNodewrappingPath;updateGeometry(points, closed)hot-updates.BillboardNode—ImageNodethat rotates toward the camera every frame viaonFrame+lookAt.TextNode— extendsBillboardNode; renders text to aBitmapwithCanvas(rounded-rect background, centred text); auto-regenerates bitmap on property change.LineNode {},PathNode {},BillboardNode {},TextNode {}composable wrappers.samples/line-path— 3-axis gizmo (LineNode × 3), spiral PathNode, animated sine-wave PathNode driven by Compose state.samples/text-labels— 3 labelled spheres with orbit camera; tap a sphere to cycle its label.Roadmap
Closes 3.4.0 items:
LineNode / PathNode,BillboardNode,TextNode.Test plan
:samples:line-path:assembleDebugand:samples:text-labels:assembleDebug🤖 Generated with Claude Code