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further abstract trace_noodle

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This commit is contained in:
Stewart Allen 2025-09-18 22:07:08 -04:00
commit 0824621e33
1 changed files with 20 additions and 23 deletions
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43
src/kiri/mode/fdm/post.js
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@ -168,9 +168,7 @@ function thin_type_3(params) {
// produce trace from outside of poly inward no more than max inset
let noodleWidth = offsetN * count;
let { noodle, remain } = top.poly.noodle(noodleWidth);
top.gaps = remain;
let { noodle,} = top.poly.noodle(noodleWidth);
// render inset "noodle"
// shells.appendAll(noodle);
@ -184,10 +182,8 @@ function thin_type_3(params) {
let maxR = midR * 1.5; // max double wall extrusion width
let maxF = midR * 2; // max interior extrusion width
let { lines, polys } = trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
let { lines, polys, remain, trace } = trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
brute: false,
showExtrusion: true,
showExtrudeInset: true,
showChainIntersect: false
});
@ -197,18 +193,26 @@ function thin_type_3(params) {
thin.push(...lines);
shells.push(...polys);
// show extrusion
for (let point of trace) {
shells.push(newPolygon().centerCircle(point, point.r, 12));
}
// show remaining noodle after single trace
shells.push(...remain);
return { last, gaps };
}
// trace a single extrusion line around the inside of the noodle
function trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
brute,
showExtrusion,
showExtrudeInset,
showChainIntersect,
}) {
let scale = 1000;
let remain = [];
let trace = [];
let polys = [];
let lines = [];
let insets = [];
@ -385,8 +389,6 @@ function trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
return [ midR, rem, midR ];
} else {
return [ midR, cr - midR * 2, midR ];
// let divs = (cr / midR) | 0;
// return new Array(divs).fill(cr / divs);
}
}
@ -436,24 +438,21 @@ function trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
nupoly.push(new Point(min.x, min.y));
return;
}
let op;
if (pop.length === 1) {
nupoly.push(new Point(min.x, min.y));
// for single wall place it exactly on medial axis
if (showExtrusion)
polys.push(newPolygon().centerCircle({
x: min.x,
y: min.y
}, mr, 12));
trace.push(op = { x: min.x, y: min.y, r: mr })
} else {
let off = -dstep;
// otherwise use divisions
for (let i=0; i<1; i++) {
off += (pop[i] * (i ? 2 : 1));
if (showExtrusion)
polys.push(newPolygon().centerCircle({
trace.push(op = {
x: np1.x + dy * off,
y: np1.y - dx * off
}, pop[0], 12));
y: np1.y - dx * off,
r: pop[0]
})
}
off += dstep / 2;
nupoly.push(new Point(np1.x + dy * off * 2, np1.y - dx * off * 2));
@ -465,12 +464,10 @@ function trace_noodle(noodle, noodleWidth, minR, midR, maxR, {
});
}
// subtract inner extrusion offset from parent
if (showExtrudeInset) {
polys.push(...POLY.subtract([ parent ], inner, []));
}
remain.push(...POLY.subtract([ parent ], inner, []));
}
return { lines, polys };
return { lines, polys, remain, trace };
}
/**