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[csharp] Ported IKConstraint fix.

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This commit is contained in:
badlogic 2017-05-24 17:37:00 +02:00
parent 5f1431c397
commit 73cb6299de
1 changed files with 19 additions and 16 deletions
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35
spine-csharp/src/IkConstraint.cs
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@ -93,7 +93,7 @@ namespace Spine {
if (rotationIK > 180)
rotationIK -= 360;
else if (rotationIK < -180) rotationIK += 360;
bone.UpdateWorldTransform(bone.ax, bone.ay, bone.arotation + rotationIK * alpha, bone.ascaleX, bone.ascaleY, bone.ashearX,
bone.UpdateWorldTransform(bone.ax, bone.ay, bone.arotation + rotationIK * alpha, bone.ascaleX, bone.ascaleY, bone.ashearX,
bone.ashearY);
}
@ -181,21 +181,24 @@ namespace Spine {
}
float minAngle = MathUtils.PI, minX = l1 - a, minDist = minX * minX, minY = 0;
float maxAngle = 0, maxX = l1 + a, maxDist = maxX * maxX, maxY = 0;
float angle = (float)Math.Acos(-a * l1 / (aa - bb));
x = a * (float)Math.Cos(angle) + l1;
y = b * (float)Math.Sin(angle);
d = x * x + y * y;
if (d < minDist) {
minAngle = angle;
minDist = d;
minX = x;
minY = y;
}
if (d > maxDist) {
maxAngle = angle;
maxDist = d;
maxX = x;
maxY = y;
c = -a * l1 / (aa - bb);
if (c >= -1 && c <= 1) {
float angle = (float)Math.Acos(c);
x = a * (float)Math.Cos(c) + l1;
y = b * (float)Math.Sin(c);
d = x * x + y * y;
if (d < minDist) {
minAngle = c;
minDist = d;
minX = x;
minY = y;
}
if (d > maxDist) {
maxAngle = c;
maxDist = d;
maxX = x;
maxY = y;
}
}
if (dd <= (minDist + maxDist) / 2) {
a1 = ta - (float)Math.Atan2(minY * bendDir, minX);