// main initializes windowing, creates a new, continuously draws some pixels,
// waits for close event, destroys the window and terminates windowing.
func main() {
width := 1024
height := 768
w, err := window.NewWindow(width, height, "Three Animate", true)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(-1)
}
defer window.Terminate()
x := width / 2
y := height / 2
r := rand.New(rand.NewSource(0))
for close := false; !close; close = w.ShouldClose() {
w.Setxy(x, y, 0, 0, 0)
width = w.Width()
height = w.Height()
x = x + r.Intn(3) - 1
x = tmath.Mini(width, tmath.Maxi(0, x))
y = y + r.Intn(3) - 1
y = tmath.Mini(height, tmath.Maxi(0, y))
w.Setxy(x, y, 255, 0, 0)
w.Update()
}
w.Destroy()
}
// run initializes windowing, creates a new, waits for close event, destroys
// the window and terminates windowing.
func run(testing bool) {
w, err := window.NewWindow(1024, 768, "Three Example", !testing)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(-1)
}
defer window.Terminate()
for close := false; !close; close = w.ShouldClose() {
w.Update()
if testing {
w.SetClose()
}
}
w.Destroy()
}
// main creates a new scene with a camera and a triangle, renders the scene,
// draws the result to a window and displays it. The middle point of the
// triangle continuously changes position relative to the current time.
func main() {
win, err := window.NewWindow(1024, 768, "Three Render 2", true)
if err != nil {
panic(err)
}
defer window.Terminate()
cam := render.NewDefCam()
p := geom.NewTri4(-1, 0, -3, 0, 1, -3, 1, 0, -3)
for close := false; !close; close = win.ShouldClose() {
now := time.Now()
m := &p[1][1]
*m = math.Sin(float64(now.UnixNano()) / 1e9)
c := &cam.At[0]
*c = math.Cos(float64(now.UnixNano()) / 1e9)
cam.Ar = float64(win.Width()) / float64(win.Height())
t := cam.PerspTransf(win.Width(), win.Height())
q := p.Transf(t)
win.Clear()
q.Draw(win)
win.Update()
}
}
// main creates a new scene with a camera and a triangle, renders the scene,
// draws the result to a window and displays it. The middle point of the
// triangle continuously changes position relative to the current time.
func main() {
win, err := window.NewWindow(1024, 768, "Three Move", true)
if err != nil {
panic(err)
}
defer window.Terminate()
cam := render.NewDefCam()
p := geom.NewTri4(-1, 0, -3, 0, 1, -3, 1, 0, -3)
then := time.Now()
now := time.Now()
for close := false; !close; close = win.ShouldClose() || win.KeyDown(window.KeyQ) {
then = now
now = time.Now()
dt := now.Sub(then)
d := mgeom.Vec3{0, 0, 0}
if win.KeyDown(window.KeyW) {
d.Add(&cam.At)
}
if win.KeyDown(window.KeyS) {
d.Sub(&cam.At)
}
if win.KeyDown(window.KeyA) {
d.Add(mgeom.Cross(&cam.At, &cam.Up))
}
if win.KeyDown(window.KeyD) {
d.Add(mgeom.Cross(&cam.Up, &cam.At))
}
d.Norm()
d.Scale(dt.Seconds())
cam.Eye.Add(&d)
cam.Ar = float64(win.Width()) / float64(win.Height())
t := cam.PerspTransf(win.Width(), win.Height())
q := p.Transf(t)
win.Clear()
q.Draw(win)
win.Update()
}
}