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complete basic gerber import conversion to mesh for milling traces

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This commit is contained in:
Stewart Allen 2024-06-29 23:03:40 -04:00
commit 8b215460a1
6 changed files with 65 additions and 30 deletions
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27
src/geo/polygon.js
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@ -1852,39 +1852,42 @@ class Polygon {
}
// turn 2d polygon into a 2.5D ribbon extruded in Z
ribbonZ(z = 1) {
ribbonZ(z = 1, zadd = 0, rev) {
let poly = this.clone().setClockwise();
let faces = [];
let points = poly.points;
let length = points.length;
if (rev) {
points = points.slice().reverse();
}
for (let i=0; i<length; i++) {
let p0 = points[i];
let p1 = points[(i + 1) % length];
faces.push(p0.x, p0.y, p0.z);
faces.push(p1.x, p1.y, p0.z);
faces.push(p1.x, p1.y, p1.z + z);
faces.push(p0.x, p0.y, p0.z);
faces.push(p1.x, p1.y, p1.z + z);
faces.push(p0.x, p0.y, p0.z + z);
faces.push(p0.x, p0.y, p0.z + zadd);
faces.push(p1.x, p1.y, p1.z + z + zadd);
faces.push(p1.x, p1.y, p0.z + zadd);
faces.push(p0.x, p0.y, p0.z + zadd);
faces.push(p0.x, p0.y, p0.z + z + zadd);
faces.push(p1.x, p1.y, p1.z + z + zadd);
}
return faces;
}
// extrude poly (with inner voids) into 3d mesh
extrude(z = 1) {
extrude(z = 1, zadd = 0) {
let obj = [];
let earcut = this.earcut();
for (let poly of earcut) {
for (let point of poly.points) {
obj.push(point.x, point.y, z);
obj.push(point.x, point.y, z + zadd);
}
for (let point of poly.points.reverse()) {
obj.push(point.x, point.y, 0);
obj.push(point.x, point.y, zadd);
}
}
obj.appendAll(this.ribbonZ(z));
obj.appendAll(this.ribbonZ(z, zadd));
for (let inner of this.inner || []) {
obj.appendAll(inner.ribbonZ(z));
obj.appendAll(inner.ribbonZ(z, zadd, true));
}
return obj;
}