code: @SuppressWarnings("checkstyle:magicnumber")
  	public void setScale(double scaleX, double scaleY) {
  		final double[] tmpScale = new double[3];
  		final double[] tmpRot = new double[9];
  		getScaleRotate2x2(tmpScale, tmpRot);
  		this.m00 = tmpRot[0] * scaleX;
  		this.m01 = tmpRot[1] * scaleY;
  		this.m10 = tmpRot[3] * scaleX;
  		this.m11 = tmpRot[4] * scaleY;
  	}
docs: Change the scale of this matrix.
  Performs an SVD normalization of this matrix for determining and preserving the rotation.
  
  @param scaleX the scaling factor along x axis.
  @param scaleY the scaling factor along y axis.
  @see #makeScaleMatrix(double, double)