public void getCompositeTransform(Transform transform) {
if (transform == null) throw new NullPointerException("transform can not be null");
// transform = T R S M
// Combine translation and rotation (TR)
float[] m = new float[16];
orientation.get(m);
m[3] = translation.x;
m[7] = translation.y;
m[11] = translation.z;
transform.set(m);
// Apply scale (S)
transform.postScale(scale.x, scale.y, scale.z);
// Apply custom (M)
transform.postMultiply(this.transform);
}
public void preRotate(float angle, float ax, float ay, float az) {
Transform t = new Transform();
t.postRotate(angle, ax, ay, az);
t.postMultiply(orientation);
orientation.set(t);
}