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[csharp] port of bugfix commit 5cab7e9: Fixed 1-bone IK for transform mode noRotationOrReflection when skeleton scale is applied.

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This commit is contained in:
Harald Csaszar 2020-06-03 16:35:26 +02:00
parent c54745cbc7
commit 85dd60bf57
1 changed files with 9 additions and 11 deletions
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20
spine-csharp/src/IkConstraint.cs
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@ -170,18 +170,16 @@ namespace Spine {
ty = targetY - bone.worldY;
break;
case TransformMode.NoRotationOrReflection: {
rotationIK += (float)Math.Atan2(pc, pa) * MathUtils.RadDeg;
float ps = Math.Abs(pa * pd - pb * pc) / (pa * pa + pc * pc);
pb = -pc * ps;
pd = pa * ps;
float x = targetX - p.worldX, y = targetY - p.worldY;
float d = pa * pd - pb * pc;
tx = (x * pd - y * pb) / d - bone.ax;
ty = (y * pa - x * pc) / d - bone.ay;
break;
}
float s = Math.Abs(pa * pd - pb * pc) / (pa * pa + pc * pc);
float sa = pa / bone.skeleton.ScaleX;
float sc = pc / bone.skeleton.ScaleY;
pb = -sc * s * bone.skeleton.ScaleX;
pd = sa * s * bone.skeleton.ScaleY;
rotationIK += (float)Math.Atan2(pc, pa) * MathUtils.RadDeg;
goto default; // Fall through.
}
default: {
float x = targetX - p.worldX, y = targetY - p.worldY;
float x = targetX - p.worldX, y = targetY - p.worldY;
float d = pa * pd - pb * pc;
tx = (x * pd - y * pb) / d - bone.ax;
ty = (y * pa - x * pc) / d - bone.ay;