Matrix3x2d.scaleAround

Apply scaling to this matrix by scaling the base axes by the given sx and sy factors while using <code>(ox, oy)</code> as the scaling origin. <p> If <code>M</code> is <code>this</code> matrix and <code>S</code> the scaling matrix, then the new matrix will be <code>M * S</code>. So when transforming a vector <code>v</code> with the new matrix by using <code>M * S * v</code>, the scaling will be applied first! <p> This method is equivalent to calling: <code>translate(ox, oy).scale(sx, sy).translate(-ox, -oy)</code>

@param sx the scaling factor of the x component @param sy the scaling factor of the y component @param ox the x coordinate of the scaling origin @param oy the y coordinate of the scaling origin @return this