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for belt, clip supports to areas above platform

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This commit is contained in:
Stewart Allen 2026-01-10 15:20:14 -05:00
commit 60c14cf08a
1 changed files with 12 additions and 1 deletions
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13
src/kiri/mode/fdm/work/slice.js
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@ -538,7 +538,7 @@ export function sliceOne(settings, widget, onupdate, ondone) {
if (shadowSum) {
shadow = POLY.union([...shadow, ...shadowSum], minArea, true);
}
// trim to slice.clips
// subtract slice.clips areas (widget boundaries) from shadow projection
if (true) {
let rem = [];
let clips = [
@ -557,6 +557,17 @@ export function sliceOne(settings, widget, onupdate, ondone) {
shadow = POLY.offset(shadow, -bump, { z: slice.z });
}
shadowSum = shadow;
// if belt, clip shadow to belt angle projection along platform
if (belt) {
let boundsx = bounds.dim.x * 1.1;
let boundsy = bounds.dim.y * 1.1;
let skewy = slice.z * belt.slope;
let clip = newPolygon()
.centerRectangle(newPoint(0, 0, slice.z), boundsx, boundsy)
.move({ x: 0, y: -boundsy / 2 + skewy, z: 0 });
shadow = POLY.trimTo(shadow, [ clip ]);
// slice.output().setLayer("belt clip", 0xffff00).addPolys([ clip ]);
}
slice.supports = shadow;
slice.output().setLayer("shadow", 0xff0000).addPolys(shadow);
trackupdate((++count/length), 0.10, 0.15, "support");