164 lines
3.0 KiB
Go
164 lines
3.0 KiB
Go
// PresentationApp project glfw.go
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package main
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import (
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"fmt"
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"image"
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"log"
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"github.com/go-gl/gl/v2.1/gl"
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"github.com/go-gl/glfw/v3.1/glfw"
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"github.com/lordwelch/qml"
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)
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var (
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win *glfw.Window
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monWidth int //displayed height
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monHeight int //displayed width
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monitors []*glfw.Monitor
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projMonitor *glfw.Monitor
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tex1 *uint32 //identifier for opengl texture
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texDel Bool //if texture should be deleted
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)
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func setupScene() {
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gl.ClearColor(0, 0, 0, 0)
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if texDel {
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gl.DeleteTextures(1, tex1)
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}
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tex1 = newTexture(*slides[selCell].getImage(monWidth, monHeight))
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gl.MatrixMode(gl.PROJECTION)
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gl.LoadIdentity()
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gl.Ortho(-1, 1, -1, 1, 1.0, 10.0)
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gl.MatrixMode(gl.MODELVIEW)
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gl.LoadIdentity()
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texDel = true
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}
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func drawSlide() {
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gl.Clear(gl.COLOR_BUFFER_BIT)
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gl.MatrixMode(gl.MODELVIEW)
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gl.LoadIdentity()
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gl.Translatef(0, 0, -3.0)
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gl.Begin(gl.QUADS)
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//top left
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gl.TexCoord2f(0, 0)
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gl.Vertex3f(-1, 1, 0)
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//top right
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gl.TexCoord2f(1, 0)
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gl.Vertex3f(1, 1, 0)
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//bottom right
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gl.TexCoord2f(1, 1)
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gl.Vertex3f(1, -1, 0)
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//bottom left
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gl.TexCoord2f(0, 1)
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gl.Vertex3f(-1, -1, 0)
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gl.End()
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}
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func newTexture(rgba image.RGBA) *uint32 {
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var texture1 uint32
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gl.Enable(gl.TEXTURE_2D)
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gl.GenTextures(1, &texture1)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
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gl.TexImage2D(
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gl.TEXTURE_2D,
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0,
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gl.RGBA,
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int32(rgba.Rect.Size().X),
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int32(rgba.Rect.Size().Y),
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0,
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gl.RGBA,
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gl.UNSIGNED_BYTE,
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gl.Ptr(rgba.Pix))
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return &texture1
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}
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func checkMon() {
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monitors = glfw.GetMonitors()
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glfw.WindowHint(glfw.ContextVersionMajor, 2)
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glfw.WindowHint(glfw.ContextVersionMinor, 1)
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glfw.WindowHint(glfw.AutoIconify, glfw.False)
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glfw.WindowHint(glfw.Decorated, glfw.False)
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if i := len(monitors); i < 2 {
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fmt.Println("You only have 1 monitor!!!!!!!!!!! :-P")
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monWidth = 800
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monHeight = 600
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win, err = glfw.CreateWindow(monWidth, monHeight, "Cube", nil, nil)
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if err != nil {
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panic(err)
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}
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projMonitor = monitors[0]
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} else {
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fmt.Printf("You have %d monitors\n", i)
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monWidth = monitors[1].GetVideoMode().Width
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monHeight = monitors[1].GetVideoMode().Height
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win, err = glfw.CreateWindow(monWidth, monHeight, "Cube", nil, nil)
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win.SetPos(monitors[1].GetPos())
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fmt.Printf("Width: %d Height: %d \n", monWidth, monHeight)
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if err != nil {
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panic(err)
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}
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projMonitor = monitors[1]
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}
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monitorInfo()
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}
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func monitorInfo() {
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for _, mon := range monitors {
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fmt.Printf("monitor name: %s\n", mon.GetName())
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i, t := mon.GetPos()
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fmt.Printf("position X: %d Y: %d\n", i, t)
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}
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}
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func glInit() {
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window.Set("cls", false)
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if err = glfw.Init(); err != nil {
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log.Fatalln("failed to initialize glfw:", err)
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}
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checkMon()
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win.MakeContextCurrent()
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if err := gl.Init(); err != nil {
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panic(err)
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}
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win.SetPos(projMonitor.GetPos())
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setupScene()
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qml.Func1 = func() int {
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if !win.ShouldClose() {
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//glfw.PollEvents()
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drawSlide()
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win.SwapBuffers()
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return 0
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}
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win.Hide()
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//win.Destroy()
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//glfw.Terminate()
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return 1
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}
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}
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