func (m *Matrix) InitScale(sx, sy float64) {
	C.cairo_matrix_init_scale(m.native(), C.double(sx), C.double(sy))
}
func (m *Matrix) InitScale(sx, sy float64) {
	C.cairo_matrix_init_scale(m.native(), C.double(sx), C.double(sy))
}
// InitScale initializes a matrix with the give scale