Replace fixed-interval yields (every 4096 iterations) with time-based
yields (every ~100ms of wall time). In foreground tabs this means ~10
yields per second instead of ~50-200, with identical UI responsiveness.
In background tabs where setTimeout(0) is throttled to ~1s, this
reduces overhead from ~200 wasted seconds to ~10 — the export runs
nearly as fast in the background as in the foreground.
Addresses #2 (background tab resource allocation).
Displacement, subdivision and exclusion all used template-string keys
for vertex dedup and edge lookup maps. Replaced with a single numeric
dedup pass + flat typed arrays (Float64Array / Uint8Array), cutting
displacement time by ~2.5x and subdivision by ~2.4x on a 68k tri STL.
- displacement.js: vertex dedup → flat arrays for smooth normals,
zone areas, masked fractions, displacement cache, excluded set
- subdivision.js: numeric edge keys (a*maxV+b) instead of template strings
- exclusion.js: numeric edge keys, BFS queue.shift() → index pointer,
adjacency Map → Array, TypedArray.set() for overlay copy
- mapping.js: Math.pow(x,4) → x²·x², cos/sin cached per computeUV call,
applyTransform signature changed to accept precomputed cos/sin
- Renamed "Surface Mask" section to "Mask Angles" for clarity in index.html.
- Updated translation keys and tooltips to reflect the new terminology in i18n.js.
- Removed the erase toggle button from the exclusion panel and implemented Shift key functionality to toggle erase mode in main.js.
- Adjusted brush radius handling to improve user experience and updated related UI elements in index.html.
- Enhanced the subdivision process to track original face IDs for better masking accuracy in subdivision.js.
- Added CSS styles for new UI elements and improved layout in style.css.
- Introduced a new section in the UI for surface exclusions, allowing users to exclude triangles from displacement using brush and bucket fill tools.
- Implemented brush type switching (single and radius) and radius control for the brush tool.
- Added functionality for bucket fill with a threshold angle to control the fill area.
- Integrated exclusion weights into the displacement algorithm to ensure excluded faces are handled correctly during subdivision.
- Created adjacency and centroid calculations for triangles to support the bucket fill operation.
- Developed overlay geometries for visual feedback on excluded faces and hover previews.
- Enhanced the CSS for the new exclusion tools and their layout in the UI.
Avatarsia
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