func Open(w, h int, sWin string, fullscreen bool) *Window {
if GWindow != nil {
panic("only one Window is allowed")
}
listener.GListener = listener.New()
win := &Window{width: w, height: h, title: sWin, inputListener: listener.GListener}
GWindow = win
var err error
if err = glfw.Init(); err != nil {
panic(fmt.Sprintf("[e] %v\n", err))
}
mode := glfw.Windowed
if fullscreen {
mode = glfw.Fullscreen
}
if err = glfw.OpenWindow(win.width, win.height, 8, 8, 8, 0, 16, 0, mode); err != nil {
panic(fmt.Sprintf("[e] %v\n", err))
}
gl.Init() //WHY?? (shader creation fails when not)
glfw.SetSwapInterval(1) // Enable vertical sync on cards that support it.
glfw.SetWindowTitle(win.title) // Set window title
//CALLBACKS
glfw.SetWindowSizeCallback(func(w, h int) { GWindow.reshape(w, h) })
glfw.SetWindowCloseCallback(listener.OnClose)
glfw.SetMouseButtonCallback(listener.OnMouseButton)
glfw.SetMouseWheelCallback(listener.OnMouseWheel)
glfw.SetKeyCallback(listener.OnKey)
glfw.SetCharCallback(listener.OnChar)
win.initGL()
return win
}
func main() {
globalState.Mouse = make(map[int]bool)
flag.Parse()
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
if len(flag.Args()) == 0 {
old := flag.Usage
flag.Usage = func() {
old()
fmt.Fprintf(os.Stderr, "You MUST pass the name of the file to view\n")
}
flag.Usage()
return
}
mesh, err = wfobj.LoadMeshFromFile(flag.Args()[0])
if err != nil {
flag.Usage()
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.Terminate()
if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetSwapInterval(1)
glfw.SetWindowTitle(Title)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
glfw.SetCharCallback(onChar)
glfw.SetMouseWheelCallback(onWheel)
glfw.SetMouseButtonCallback(onMouseButton)
glfw.SetMousePosCallback(onMousePos)
initGL()
running = true
for running && glfw.WindowParam(glfw.Opened) == 1 {
handleInput()
drawScene()
}
}
func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
// Ensure glfw is cleanly terminated on exit.
defer glfw.Terminate()
if err = glfw.OpenWindow(256, 256, 8, 8, 8, 0, 0, 0, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
// Ensure window is cleanly closed on exit.
defer glfw.CloseWindow()
// Enable vertical sync on cards that support it.
glfw.SetSwapInterval(1)
// Set window title
glfw.SetWindowTitle("Simple GLFW window")
// Hook some events to demonstrate use of callbacks.
// These are not necessary if you don't need them.
glfw.SetWindowSizeCallback(onResize)
glfw.SetWindowCloseCallback(onClose)
glfw.SetMouseButtonCallback(onMouseBtn)
glfw.SetMouseWheelCallback(onMouseWheel)
glfw.SetKeyCallback(onKey)
glfw.SetCharCallback(onChar)
// Start loop
running := true
for running {
// OpenGL rendering goes here.
// Swap front and back rendering buffers. This also implicitly calls
// glfw.PollEvents(), so we have valid key/mouse/joystick states after
// this. This behavior can be disabled by calling glfw.Disable with the
// argument glfw.AutoPollEvents. You must be sure to manually call
// PollEvents() or WaitEvents() in this case.
glfw.SwapBuffers()
// Break out of loop when Escape key is pressed, or window is closed.
running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) == 1
}
}
func (o *OpenGl) Init() {
if err := glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
return
}
defer glfw.Terminate()
if err := glfw.OpenWindow(o.width, o.height, 0, 0, 0, 0, 16, 0, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "glfw: %s\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetSwapInterval(1)
glfw.SetWindowTitle(o.title)
if err := gl.Init(); err != nil {
fmt.Fprintf(os.Stderr, "gl: %s\n", err)
}
glfw.SetKeyCallback(glfw.KeyHandler(o.keyboard))
glfw.SetMouseButtonCallback(glfw.MouseButtonHandler(o.mouseClick))
glfw.SetMousePosCallback(glfw.MousePosHandler(o.mouseMove))
glfw.SetMouseWheelCallback(glfw.MouseWheelHandler(o.mouseWheel))
if err := o.initScene(); err != nil {
fmt.Fprintf(os.Stderr, "init: %s\n", err)
return
}
for glfw.WindowParam(glfw.Opened) == 1 {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
if o.display3d != nil {
o.set3dView()
o.display3d()
}
if o.display2d != nil {
o.set2dView()
o.display2d()
}
glfw.SwapBuffers()
time.Sleep(20 * time.Millisecond)
//<-o.redisplay
}
}
// Sets up input handlers
func InitInputHandlers() {
InitKeyHandlers()
glfw.SetMousePosCallback(func(x, y int) {
dx, dy := x-mousePrevX, y-mousePrevY
mousePrevX, mousePrevY = x, y
if mouseButton[0] == 0 {
return
}
Rot[0] += int(deltaLook * float64(dx))
Rot[1] += int(deltaLook * float64(dy))
// limit viewing angles
for i := range Rot {
if Rot[i] > 360 {
Rot[i] = 0
}
if Rot[i] < 0 {
Rot[i] += 360
}
}
log.Println("rot:", Rot)
})
glfw.SetMouseButtonCallback(func(button, state int) {
//log.Println("mousebutton:", button, state)
mouseButton[button] = state
})
glfw.SetMouseWheelCallback(func(delta int) {
//log.Println("mousewheel:", delta)
glfw.SetMouseWheel(0)
})
glfw.SetWindowSizeCallback(func(w, h int) {
Width, Height = w, h
InitViewport()
})
}
func (w *window) SetMouseWheelCallback(f func(int)) {
glfw.SetMouseWheelCallback(func(delta int) {
f(delta)
})
}
func Init() {
glfw.SetMouseWheelCallback(mouseWheelHandler)
glfw.SetMouseButtonCallback(mouseButtonHandler)
glfw.SetMousePosCallback(mousePosHandler)
glfw.SetKeyCallback(keyHandler)
}