zoom3 method
Post-scales by the specified scale factors. x and y is pivot.
@param scaleX @param scaleY @param x @param y @return
Implementation
Matrix4 zoom3(double scaleX, double scaleY, double x, double y) {
Matrix4 save = Matrix4.identity();
zoom4(scaleX, scaleY, x, y, save);
return save;
}