Fix sign in GeometryUtils.perpendicular()
There is a typo in one of the cases:
(z,0,x) is not perpendicular to (x,y,z), but
(-z,0,x) is.
@@ -60,7 +60,7 @@ public class GeometryUtils {
dest1.z = -y;
mag = magX;
} else if (magY > magZ) {
- dest1.x = z;
+ dest1.x = -z;
dest1.y = 0;
dest1.z = x;
mag = magY;
