Пример #1
0
// Project screen coordinates to object coordinates.
func Unproject(wx, wy, wz float64, model, proj []float64, view []int32) (objx, objy, objz float64) {
	var ox, oy, oz C.GLdouble
	C.gluUnProject(
		C.GLdouble(wx), C.GLdouble(wy), C.GLdouble(wz), (*C.GLdouble)(&model[0]),
		(*C.GLdouble)(&proj[0]), (*C.GLint)(&view[0]), &ox, &oy, &oz,
	)
	return float64(ox), float64(oy), float64(oz)
}
Пример #2
0
func UnProject(winX, winY, winZ float64, model, proj *[16]float64, view *[4]int32) (float64, float64, float64) {
	var ox, oy, oz C.GLdouble

	m := (*C.GLdouble)(unsafe.Pointer(model))
	p := (*C.GLdouble)(unsafe.Pointer(proj))
	v := (*C.GLint)(unsafe.Pointer(view))

	C.gluUnProject(
		C.GLdouble(winX),
		C.GLdouble(winY),
		C.GLdouble(winZ),
		m,
		p,
		v,
		&ox,
		&oy,
		&oz,
	)

	return float64(ox), float64(oy), float64(oz)
}