scale method

void scale (dynamic x, [ double y, double z ])

Scale this matrix by a Vector3, Vector4, or x,y,z

Implementation 

void scale(dynamic x, [double y, double z]) {
  double sx;
  double sy;
  double sz;
  final double sw = x is Vector4 ? x.w : 1.0;
  if (x is Vector3) {
    sx = x.x;
    sy = x.y;
    sz = x.z;
  } else if (x is Vector4) {
    sx = x.x;
    sy = x.y;
    sz = x.z;
  } else if (x is double) {
    sx = x;
    sy = y ?? x;
    sz = z ?? x;
  }
  _m4storage[0] *= sx;
  _m4storage[1] *= sx;
  _m4storage[2] *= sx;
  _m4storage[3] *= sx;
  _m4storage[4] *= sy;
  _m4storage[5] *= sy;
  _m4storage[6] *= sy;
  _m4storage[7] *= sy;
  _m4storage[8] *= sz;
  _m4storage[9] *= sz;
  _m4storage[10] *= sz;
  _m4storage[11] *= sz;
  _m4storage[12] *= sw;
  _m4storage[13] *= sw;
  _m4storage[14] *= sw;
  _m4storage[15] *= sw;
}