func (self *Viewport) ClipPlanes() *[6][4]float32 {
var pm32 []float64 = make([]float64, 16)
gl.GetDoublev(gl.PROJECTION_MATRIX, pm32)
var projectionMatrix64 *Matrix4 = NewMatrix(pm32[0], pm32[1], pm32[2], pm32[3], pm32[4], pm32[5], pm32[6], pm32[7], pm32[8], pm32[9], pm32[10], pm32[11], pm32[12], pm32[13], pm32[14], pm32[15])
mvpmatrix := projectionMatrix64.Multiply(ModelMatrix())
// mvpmatrix := ModelMatrix()
planes64 := [6][4]float64{
{mvpmatrix[3] + mvpmatrix[0], mvpmatrix[7] + mvpmatrix[4], mvpmatrix[11] + mvpmatrix[8], mvpmatrix[15] + mvpmatrix[12]},
{mvpmatrix[3] - mvpmatrix[0], mvpmatrix[7] - mvpmatrix[4], mvpmatrix[11] - mvpmatrix[8], mvpmatrix[15] - mvpmatrix[12]},
{mvpmatrix[3] + mvpmatrix[1], mvpmatrix[7] + mvpmatrix[5], mvpmatrix[11] + mvpmatrix[9], mvpmatrix[15] + mvpmatrix[13]},
{mvpmatrix[3] - mvpmatrix[1], mvpmatrix[7] - mvpmatrix[5], mvpmatrix[11] - mvpmatrix[9], mvpmatrix[15] - mvpmatrix[13]},
{mvpmatrix[3] + mvpmatrix[2], mvpmatrix[7] + mvpmatrix[6], mvpmatrix[11] + mvpmatrix[10], mvpmatrix[15] + mvpmatrix[14]},
{mvpmatrix[3] - mvpmatrix[2], mvpmatrix[7] - mvpmatrix[6], mvpmatrix[11] - mvpmatrix[10], mvpmatrix[15] - mvpmatrix[14]},
}
var planes32 [6][4]float32
for p := 0; p < 6; p++ {
length := math.Sqrt(math.Pow(planes64[p][0], 2) + math.Pow(planes64[p][1], 2) + math.Pow(planes64[p][2], 2) + math.Pow(planes64[p][3], 2))
planes32[p] = [4]float32{float32(planes64[p][0] / length), float32(planes64[p][1] / length), float32(planes64[p][2] / length), float32(planes64[p][3] / length)}
}
return &planes32
}
func (self *Viewport) HandleKeys(keys []uint8) {
if keys[sdl.K_UP] != 0 {
if keys[sdl.K_LCTRL] != 0 || keys[sdl.K_RCTRL] != 0 {
self.Zoomin()
} else {
self.Rotx(5)
}
}
if keys[sdl.K_DOWN] != 0 {
if keys[sdl.K_LCTRL] != 0 || keys[sdl.K_RCTRL] != 0 {
self.Zoomout()
} else {
self.Rotx(-5)
}
}
if keys[sdl.K_LEFT] != 0 {
if keys[sdl.K_LCTRL] != 0 || keys[sdl.K_RCTRL] != 0 {
self.viewRadius -= 4
if self.viewRadius < 8 {
self.viewRadius = 8
}
} else {
self.Roty(9)
}
}
if keys[sdl.K_RIGHT] != 0 {
if keys[sdl.K_LCTRL] != 0 || keys[sdl.K_RCTRL] != 0 {
self.viewRadius += 4
} else {
self.Roty(-9)
}
}
if keys[sdl.K_SLASH] != 0 {
var pm32 []float64 = make([]float64, 16)
gl.GetDoublev(gl.PROJECTION_MATRIX, pm32)
var projectionMatrix64 *Matrix4 = NewMatrix(pm32[0], pm32[1], pm32[2], pm32[3], pm32[4], pm32[5], pm32[6], pm32[7], pm32[8], pm32[9], pm32[10], pm32[11], pm32[12], pm32[13], pm32[14], pm32[15])
mvpmatrix := projectionMatrix64.Multiply(ModelMatrix())
// mvpmatrix := ModelMatrix()
planes64 := [6][4]float64{
{mvpmatrix[3] + mvpmatrix[0], mvpmatrix[7] + mvpmatrix[4], mvpmatrix[11] + mvpmatrix[8], mvpmatrix[15] + mvpmatrix[12]},
{mvpmatrix[3] - mvpmatrix[0], mvpmatrix[7] - mvpmatrix[4], mvpmatrix[11] - mvpmatrix[8], mvpmatrix[15] - mvpmatrix[12]},
{mvpmatrix[3] + mvpmatrix[1], mvpmatrix[7] + mvpmatrix[5], mvpmatrix[11] + mvpmatrix[9], mvpmatrix[15] + mvpmatrix[13]},
{mvpmatrix[3] - mvpmatrix[1], mvpmatrix[7] - mvpmatrix[5], mvpmatrix[11] - mvpmatrix[9], mvpmatrix[15] - mvpmatrix[13]},
{mvpmatrix[3] + mvpmatrix[2], mvpmatrix[7] + mvpmatrix[6], mvpmatrix[11] + mvpmatrix[10], mvpmatrix[15] + mvpmatrix[14]},
{mvpmatrix[3] - mvpmatrix[2], mvpmatrix[7] - mvpmatrix[6], mvpmatrix[11] - mvpmatrix[10], mvpmatrix[15] - mvpmatrix[14]},
}
var planes32 [6][4]float32
for p := 0; p < 6; p++ {
length := math.Sqrt(math.Pow(planes64[p][0], 2) + math.Pow(planes64[p][1], 2) + math.Pow(planes64[p][2], 2) + math.Pow(planes64[p][3], 2))
fmt.Printf("Length: %d: %0.2f\n", p, length)
planes32[p] = [4]float32{float32(planes64[p][0] / length), float32(planes64[p][1] / length), float32(planes64[p][2] / length), float32(planes64[p][3] / length)}
fmt.Printf("Plane: %d: [%0.6f, %0.6f, %0.6f, %0.6f]\n", p, planes32[p][0], planes32[p][1], planes32[p][2], planes32[p][3])
}
}
}