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for area offsets, disable wasm (lacks features) and use round joins for offsets (better tool paths for cnc)

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This commit is contained in:
Stewart Allen 2025-12-13 15:48:30 -05:00
commit d5b6d4c080
7 changed files with 66 additions and 46 deletions
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38
src/geo/polygon.js
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@ -2070,11 +2070,13 @@ export class Polygon {
* @returns {?Polygon[]}
*/
diff(poly) {
let fillang = this.fillang && this.area() > poly.area() ? this.fillang : poly.fillang,
clip = new Clipper(),
let clip = new Clipper(),
tree = new PolyTree(),
sp1 = this.toClipper(),
sp2 = poly.toClipper();
sp2 = poly.toClipper(),
fillang = this.fillang
&& this.area() > poly.area()
? this.fillang : poly.fillang;
clip.AddPaths(sp1, PathSubject, true);
clip.AddPaths(sp2, PathClip, true);
@ -2116,11 +2118,14 @@ export class Polygon {
* @returns {?Polygon[]}
*/
mask(poly, nullOnEquiv, minarea) {
let fillang = this.fillang && this.area() > poly.area() ? this.fillang : poly.fillang,
clip = new Clipper(),
let clip = new Clipper(),
tree = new PolyTree(),
sp1 = this.toClipper(),
sp2 = poly.toClipper();
sp2 = poly.toClipper(),
fillang = this.fillang
&& this.area() > poly.area()
? this.fillang : poly.fillang;
clip.AddPaths(sp1, PathSubject, true);
clip.AddPaths(sp2, PathClip, true);
@ -2258,28 +2263,23 @@ export class Polygon {
union(poly, min, all) {
if (!this.overlaps(poly)) return null;
let fillang = this.fillang && this.area() > poly.area() ? this.fillang : poly.fillang,
clip = new Clipper(),
let clip = new Clipper(),
tree = new PolyTree(),
sp1 = this.toClipper(),
sp2 = poly.toClipper(),
minarea = min ?? 0.1;
fillang = this.fillang
&& this.area() >= poly.area()
? this.fillang : poly.fillang;
clip.AddPaths(sp1, PathSubject, true);
clip.AddPaths(sp2, PathClip, true);
if (clip.Execute(ClipUnion, tree, FillEvenOdd, FillEvenOdd)) {
let union = POLY.fromClipperTreeUnion(tree, poly.getZ(), minarea);
let union = POLY.fromClipperTreeUnion(tree, poly.getZ(), min ?? 0);
let length = union.length;
if (all) {
if (union.length === 2) {
return null;
// if (this.unionMatch(union) || poly.unionMatch(union)) {
// return null;
// }
}
return union;
}
if (union.length === 1) {
return length === 2 ? null : union;
} else if (length === 1) {
union = union[0];
union.fillang = fillang;
return union;