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fix dogbones typo for trace. fix first point error

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This commit is contained in:
Stewart Allen 2023-02-25 13:07:40 -05:00
commit e0695b1a02
3 changed files with 29 additions and 20 deletions
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28
src/kiri-mode/cam/slice.js
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@ -292,33 +292,29 @@ CAM.addDogbones = function(poly, dist, reverse) {
if (Array.isArray(poly)) {
return poly.forEach(p => CAM.addDogbones(p, dist));
}
// if (poly.open) return;
let open = poly.open;
let isCW = poly.isClockwise();
if (reverse || poly.parent) isCW = !isCW;
let oldpts = poly.points.slice();
let lastpt = oldpts[oldpts.length - 1];
let lastsl = lastpt.slopeTo(oldpts[0]).toUnit();
let length = oldpts.length + (open ? 0 : 1);
let newpts = [ ];
for (let i=0; i<oldpts.length + (open ? 0 : 1); i++) {
for (let i=0; i<length; i++) {
let nextpt = oldpts[i % oldpts.length];
let nextsl = lastpt.slopeTo(nextpt).toUnit();
let adiff = lastsl.angleDiff(nextsl, true);
let bdiff = ((adiff < 0 ? (180 - adiff) : (180 + adiff)) / 2) + 180;
if (open && i === 0) {
lastsl = nextsl;
lastpt = nextpt;
newpts.push(nextpt);
continue;
}
if (isCW && adiff > 45) {
let newa = base.newSlopeFromAngle(lastsl.angle + bdiff);
newpts.push(lastpt.projectOnSlope(newa, dist));
newpts.push(lastpt.clone());
} else if (!isCW && adiff < -45) {
let newa = base.newSlopeFromAngle(lastsl.angle - bdiff);
newpts.push(lastpt.projectOnSlope(newa, dist));
newpts.push(lastpt.clone());
if (!open || (i > 1 && i < length)) {
if (isCW && adiff > 45) {
let newa = base.newSlopeFromAngle(lastsl.angle + bdiff);
newpts.push(lastpt.projectOnSlope(newa, dist));
newpts.push(lastpt.clone());
} else if (!isCW && adiff < -45) {
let newa = base.newSlopeFromAngle(lastsl.angle - bdiff);
newpts.push(lastpt.projectOnSlope(newa, dist));
newpts.push(lastpt.clone());
}
}
lastsl = nextsl;
lastpt = nextpt;