Add AttractorWidget: GPU-accelerated 2D iterative-map renderer#244
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koaning wants to merge 1 commit into
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Add AttractorWidget: GPU-accelerated 2D iterative-map renderer#244koaning wants to merge 1 commit into
koaning wants to merge 1 commit into
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Renders Clifford, De Jong, or any user-supplied formula entirely on the JS side so Python only sends scalar parameters. WebGL2 pipeline with a Canvas2D fallback. Drag to pan, scroll to zoom; the view stays in sync with Python. Coloring follows Ricky Reusser's per-iteration-distance phase scheme by default, with magma / viridis / inferno / plasma / grayscale density LUTs also selectable. The render loop pauses when the canvas is off-screen so multiple widgets don't compete for the main thread. TangleSlider drag updates also switch from debounce to throttle so reactive widgets re-render live as the user scrubs. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
AttractorWidgetrenders Clifford, De Jong, or any user-supplied 2D iterative-map formula entirely on the JS side — Python only ships scalar parameters, so slider drags don't round-trip a million points. WebGL2 pipeline with a Canvas2D fallback (badge in the corner shows which is active).magma/viridis/inferno/plasma/grayscaledensity LUTs and ablack/whitebackground are also available. Drag-to-pan and wheel-to-zoom mutate the syncedviewtraitlet, and the render loop auto-pauses when the canvas is off-screen.TangleSliderdrag updates switch from debounce to a 50 ms throttle so reactive widgets re-render live as the user scrubs, not just on release.Test plan
uv run pytest tests/ -x --ignore=tests/test_e2euv run marimo check demos/attractor.pyuv run marimo edit demos/attractor.py: drag sliders, switch formula and theme, pan/zoom the canvas, toggle background between black/white, confirmgrayscaleonwhitereads as ink-on-paper.🤖 Generated with Claude Code