Exemple #1
0
func (s *Screen) Initialize(window *glfw.Window, shutdownGLFWOnDestruct bool) {
	s.window = window
	s.shutdownGLFWOnDestruct = shutdownGLFWOnDestruct
	s.w, s.h = window.GetSize()
	s.fbW, s.fbH = window.GetFramebufferSize()
	var err error
	s.context, err = nanovgo.NewContext(nanovgo.StencilStrokes | nanovgo.AntiAlias)
	if err != nil {
		panic(err)
	}
	s.visible = true //window.GetAttrib(glfw.Visible)
	s.theme = NewStandardTheme(s.context)
	s.mousePosX = 0
	s.mousePosY = 0
	s.mouseState = 0
	s.modifiers = 0
	s.dragActive = false
	s.lastInteraction = GetTime()
	nanoguiScreens[window] = s
	runtime.SetFinalizer(s, finalizeScreen)
}
Exemple #2
0
func main() {
	err := glfw.Init(gl.ContextWatcher)
	if err != nil {
		panic(err)
	}
	defer glfw.Terminate()

	glfw.WindowHint(glfw.StencilBits, 1)
	glfw.WindowHint(glfw.Samples, 4)

	window, err := glfw.CreateWindow(1000*0.6, 600*0.6, "NanoVGo", nil, nil)
	if err != nil {
		panic(err)
	}
	window.SetKeyCallback(key)
	window.MakeContextCurrent()

	ctx, err := nanovgo.NewContext(0)
	defer ctx.Delete()

	if err != nil {
		panic(err)
	}

	demoData := LoadDemo(ctx)

	glfw.SwapInterval(0)

	fps := perfgraph.NewPerfGraph("Frame Time", "sans")

	for !window.ShouldClose() {
		t, _ := fps.UpdateGraph()

		fbWidth, fbHeight := window.GetFramebufferSize()
		winWidth, winHeight := window.GetSize()
		mx, my := window.GetCursorPos()

		pixelRatio := float32(fbWidth) / float32(winWidth)
		gl.Viewport(0, 0, fbWidth, fbHeight)
		if premult {
			gl.ClearColor(0, 0, 0, 0)
		} else {
			gl.ClearColor(0.3, 0.3, 0.32, 1.0)
		}
		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
		gl.Enable(gl.BLEND)
		gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
		gl.Enable(gl.CULL_FACE)
		gl.Disable(gl.DEPTH_TEST)

		ctx.BeginFrame(winWidth, winHeight, pixelRatio)

		demo.RenderDemo(ctx, float32(mx), float32(my), float32(winWidth), float32(winHeight), t, blowup, demoData)
		fps.RenderGraph(ctx, 5, 5)

		ctx.EndFrame()

		gl.Enable(gl.DEPTH_TEST)
		window.SwapBuffers()
		glfw.PollEvents()
	}

	demoData.FreeData(ctx)
}