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noRotationOrReflection simplification.

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NathanSweet 2016-10-18 21:26:08 +02:00
parent 257e72de11
commit f92e770bb1
1 changed files with 9 additions and 12 deletions
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21
spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Bone.java
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@ -153,28 +153,25 @@ public class Bone implements Updatable {
break; break;
} }
case noRotationOrReflection: { case noRotationOrReflection: {
float psx = (float)Math.sqrt(pa * pa + pc * pc), psy, prx; float s = pa * pa + pc * pc, prx;
if (psx > 0.0001f) { if (s > 0.0001f) {
psy = Math.abs((pa * pd - pb * pc) / psx); s = Math.abs(pa * pd - pb * pc) / s;
pb = pc * s;
pd = pa * s;
prx = atan2(pc, pa) * radDeg; prx = atan2(pc, pa) * radDeg;
} else { } else {
psx = 0; pa = 0;
psy = (float)Math.sqrt(pb * pb + pd * pd); pc = 0;
prx = 90 - atan2(pd, pb) * radDeg; prx = 90 - atan2(pd, pb) * radDeg;
} }
float cos = cosDeg(prx), sin = sinDeg(prx);
pa = cos * psx;
pb = -sin * psy;
pc = sin * psx;
pd = cos * psy;
float rx = rotation + shearX - prx; float rx = rotation + shearX - prx;
float ry = rotation + shearY - prx + 90; float ry = rotation + shearY - prx + 90;
float la = cosDeg(rx) * scaleX; float la = cosDeg(rx) * scaleX;
float lb = cosDeg(ry) * scaleY; float lb = cosDeg(ry) * scaleY;
float lc = sinDeg(rx) * scaleX; float lc = sinDeg(rx) * scaleX;
float ld = sinDeg(ry) * scaleY; float ld = sinDeg(ry) * scaleY;
a = pa * la + pb * lc; a = pa * la - pb * lc;
b = pa * lb + pb * ld; b = pa * lb - pb * ld;
c = pc * la + pd * lc; c = pc * la + pd * lc;
d = pc * lb + pd * ld; d = pc * lb + pd * ld;
break; break;