func initScene() (err error) {
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.DEPTH_TEST)
gl.Enable(gl.LIGHTING)
gl.ClearColor(0.5, 0.5, 0.5, 0.0)
gl.ClearDepth(1)
gl.DepthFunc(gl.LEQUAL)
gl.Lightfv(gl.LIGHT0, gl.AMBIENT, ambient)
gl.Lightfv(gl.LIGHT0, gl.DIFFUSE, diffuse)
gl.Lightfv(gl.LIGHT0, gl.POSITION, lightpos)
gl.Enable(gl.LIGHT0)
gl.Viewport(0, 0, Width, Height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1, 1, -1, 1, 1.0, 10.0)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
goph, err := os.Open("../../data/gopher.png")
if err != nil {
panic(err)
}
defer goph.Close()
texture, err = createTexture(goph)
return
}
func copiedReshape(window *glfw.Window, w int, h int) {
gl.DrawBuffer(gl.FRONT_AND_BACK)
//gl.Viewport(int(w/2), int(h/2), w, h)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1, 1, -1, 1, 1.5, 20)
gl.MatrixMode(gl.MODELVIEW)
}
// new window size
func reshape(window *glfw.Window, width, height int) {
gl.Viewport(0, 0, width, height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1.0, 1.0, -1.0, 1.0, 1, 20)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
}
func copiedInit() {
gl.ClearColor(0, 0, 0, 0)
gl.ShadeModel(gl.FLAT)
gl.Enable(gl.CULL_FACE)
gl.Viewport(320, 240, 640, 480)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1, 1, -1, 1, 1.5, 20)
gl.MatrixMode(gl.MODELVIEW)
}
/* new window size or exposure */
func reshape(width int, height int) {
h := float64(height) / float64(width)
gl.Viewport(0, 0, width, height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1.0, 1.0, -h, h, 5.0, 60.0)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0.0, 0.0, -40.0)
}
func onResize(w, h int) {
if h == 0 {
h = 1
}
gl.Viewport(0, 0, w, h)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-1.0, 1.0, -1.0, 1.0, 1, 20)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
}
// new window size
func reshape(window *glfw.Window, width, height int) {
h := float64(height) / float64(width)
znear := 5.0
zfar := 30.0
xmax := znear * 0.5
gl.Viewport(0, 0, width, height)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Frustum(-xmax, xmax, -xmax*h, xmax*h, znear, zfar)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translated(0.0, 0.0, -20.0)
}