// Applies a rotation of a given angle (in radians) on the current coordinate system.
func (cv Canvas) Rotate(rad float64) {
deg := RAD_TO_DEG * rad
C.DrawRotate(cv.drawing, C.double(deg))
}
// Applies the specified rotation to the current coordinate space.
//
// degrees: degrees of rotation
func (dw *DrawingWand) Rotate(degrees float64) {
C.DrawRotate(dw.dw, C.double(degrees))
}