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mark closed chains

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This commit is contained in:
Stewart Allen 2025-09-15 00:38:16 -04:00
commit 046c071333
1 changed files with 11 additions and 2 deletions
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13
src/kiri/mode/fdm/post.js
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@ -191,6 +191,10 @@ function thin_type_3(params) {
let pointMap = new Map();
let lineMap = new Map();
function pointDist(p0, p1) {
return Math.hypot(p0.x-p1.x, p0.y-p1.y);
}
function point2key(point) {
return `${(point.x*100)|0}|${(point.y*100)|0}`;
}
@ -256,7 +260,7 @@ function thin_type_3(params) {
// connect segments into chains
for (let seg of lineMap.values()) {
let { p0, p1 } = seg;
let len = seg.len = Math.hypot(p0.x-p1.x, p0.y-p1.y);
let len = seg.len = pointDist(p0, p1);
// filter out lines where both points' radii are under the
// minR threshold. shorten and fixup lines where minR falls
// somewhere along the gradient between ends.
@ -427,6 +431,11 @@ function thin_type_3(params) {
chains = chains.filter(chain => chain);
console.log({ chains });
// mark closed chains
for (let chain of chains) {
chain.closed = pointDist(chain[0], chain.peek()) <= offsetN;
}
// gather point offsets into shells
// todo: order outer shell innersection to inner
for (let chain of chains) {
@ -444,7 +453,7 @@ function thin_type_3(params) {
// compute medial axis segment cross section
let p0 = chain[i];
let p1 = chain[i+1];
let len = Math.hypot(p0.x-p1.x, p0.y-p1.y);
let len = pointDist(p0, p1);
let dr = (p1.r - p0.r);
let dx = (p1.x - p0.x);
let dy = (p1.y - p0.y);