func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.Terminate()
if err = glfw.OpenWindow(640, 480, 8, 8, 8, 8, 0, 0, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetWindowTitle("Draw")
glfw.SetSwapInterval(1)
glfw.SetKeyCallback(onKey)
glfw.SetMouseButtonCallback(onMouseBtn)
glfw.SetWindowSizeCallback(onResize)
running = true
for running && glfw.WindowParam(glfw.Opened) == 1 {
if mouse[0] != 0 {
pen.lineTo(glfw.MousePos())
} else {
pen.moveTo(glfw.MousePos())
}
glfw.SwapBuffers()
}
}
func onMouseButton(button, state int) {
globalState.Mouse[button] = state == glfw.KeyPress
if globalState.Mouse[glfw.Mouse1] {
x, y := glfw.MousePos()
globalState.Drag.Start.X, globalState.Drag.Start.Y = float32(x), float32(y)
globalState.Drag.IsDrag = true
} else {
if globalState.Drag.IsDrag {
globalState.Drag.IsDrag = false
x, y := glfw.MousePos()
globalState.Drag.End.X, globalState.Drag.End.Y = float32(x), float32(y)
}
}
}
func click(button, state int) {
if button == glfw.Mouse1 {
if state == 1 {
isHeld = true
ot, op, or = theta, phi, r
ox, oy = glfw.MousePos()
} else {
isHeld = false
}
}
}
func mouseButtonHandler(button int, state int) {
prevX, prevY = glfw.MousePos()
curButton = button
curButtonState = state
if button == glfw.MouseRight && state == 1 {
stickyX = prevX
stickyY = prevY
drawAt(prevX, prevY)
}
}
func (w *window) MousePos() (int, int) {
return glfw.MousePos()
}