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fix open polys with area trace

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This commit is contained in:
Stewart Allen 2025-12-13 21:15:00 -05:00
commit 1824fc4522
6 changed files with 50 additions and 28 deletions
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24
src/geo/polygon.js
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@ -2013,14 +2013,22 @@ export class Polygon {
closest,
mindist = Infinity;
this.forEachPoint((point, pos) => {
dist = Math.sqrt(point.distToSq2D(target));
if (dist < mindist) {
index = pos;
mindist = dist;
closest = point;
}
});
if (this.open) {
let d0 = target.distTo2D(this.first());
let d1 = target.distTo2D(this.last());
mindist = Math.min(d0, d1);
closest = d0 < d1 ? this.first() : this.last();
index = d0 < d1 ? 0 : this.points.length - 1;
} else {
this.forEachPoint((point, pos) => {
dist = Math.sqrt(point.distToSq2D(target));
if (dist < mindist) {
index = pos;
mindist = dist;
closest = point;
}
});
}
return {
distance: mindist,