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[ts] Port of commit e04e7b5. Adjusted fix for IK constraint NaN when parent has zero scale.

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This commit is contained in:
Mario Zechner 2023-04-06 13:21:44 +02:00
parent 210dc04109
commit 9382265484
1 changed files with 8 additions and 6 deletions
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14
spine-ts/spine-core/src/IkConstraint.ts
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@ -127,10 +127,13 @@ export class IkConstraint implements Updatable {
default:
let x = targetX - p.worldX, y = targetY - p.worldY;
let d = pa * pd - pb * pc;
if (d > 0) d = Math.max(0.0001, d);
else d = Math.min(-0.0001, d);
tx = (x * pd - y * pb) / d - bone.ax;
ty = (y * pa - x * pc) / d - bone.ay;
if (Math.abs(d) <= 0.0001) {
tx = 0;
ty = 0;
} else {
tx = (x * pd - y * pb) / d - bone.ax;
ty = (y * pa - x * pc) / d - bone.ay;
}
}
rotationIK += Math.atan2(ty, tx) * MathUtils.radDeg;
if (bone.ascaleX < 0) rotationIK += 180;
@ -197,8 +200,7 @@ export class IkConstraint implements Updatable {
c = pp.c;
d = pp.d;
let id = a * d - b * c, x = cwx - pp.worldX, y = cwy - pp.worldY;
if (id > 0) id = 1 / Math.max(0.0001, id);
else id = 1 / Math.min(-0.0001, id);
id = Math.abs(id) <= 0.0001 ? 0 : 1 / id;
let dx = (x * d - y * b) * id - px, dy = (y * a - x * c) * id - py;
let l1 = Math.sqrt(dx * dx + dy * dy), l2 = child.data.length * csx, a1, a2;
if (l1 < 0.0001) {