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[ts] Fixed IK constraint NaN when a parent bone has zero scale.

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This commit is contained in:
Mario Zechner 2023-04-05 15:09:29 +02:00
parent de52f2a9e3
commit 09c14b7b31
1 changed files with 4 additions and 7 deletions
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9
spine-ts/spine-core/src/IkConstraint.ts
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@ -117,10 +117,7 @@ export class IkConstraint implements Updatable {
ty = targetY - bone.worldY; ty = targetY - bone.worldY;
break; break;
case TransformMode.NoRotationOrReflection: case TransformMode.NoRotationOrReflection:
let t = pa * pa + pc * pc; let s = Math.abs(pa * pd - pb * pc) / Math.max(0.0001, pa * pa + pc * pc);
if (t > 0) t = Math.max(0.0001, t);
else t = Math.min(-0.0001, t);
let s = Math.abs(pa * pd - pb * pc) / t;
let sa = pa / bone.skeleton.scaleX; let sa = pa / bone.skeleton.scaleX;
let sc = pc / bone.skeleton.scaleY; let sc = pc / bone.skeleton.scaleY;
pb = -sc * s * bone.skeleton.scaleX; pb = -sc * s * bone.skeleton.scaleX;
@ -130,8 +127,8 @@ export class IkConstraint implements Updatable {
default: default:
let x = targetX - p.worldX, y = targetY - p.worldY; let x = targetX - p.worldX, y = targetY - p.worldY;
let d = pa * pd - pb * pc; let d = pa * pd - pb * pc;
if (d > 0) t = Math.max(0.0001, d); if (d > 0) d = Math.max(0.0001, d);
else t = Math.min(-0.0001, d); else d = Math.min(-0.0001, d);
tx = (x * pd - y * pb) / d - bone.ax; tx = (x * pd - y * pb) / d - bone.ax;
ty = (y * pa - x * pc) / d - bone.ay; ty = (y * pa - x * pc) / d - bone.ay;
} }