/* new window size or exposure */ func (self *Viewport) Reshape(width int, height int) { self.selectionDirty = false self.screenWidth = width self.screenHeight = height gl.Viewport(0, 0, width, height) viewWidth := float64(self.screenWidth) / float64(SCREEN_SCALE) viewHeight := float64(self.screenHeight) / float64(SCREEN_SCALE) self.lplane = -viewWidth / 2 self.rplane = viewWidth / 2 self.bplane = -viewHeight / 4 self.tplane = 3 * viewHeight / 4 gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(self.lplane, self.rplane, self.bplane, self.tplane, -60, 60) // self.Perspective(90, 1, 0.01,1000); gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() picker.x = float32(viewport.rplane) - picker.radius + BLOCK_SCALE*0.5 picker.y = float32(viewport.bplane) + picker.radius - BLOCK_SCALE*0.5 }
func (this *Window) SetProjection2D() { gl.MatrixMode(gl.PROJECTION) gl.Viewport(0, 0, int(this.Width()), int(this.Height())) gl.LoadIdentity() gl.Ortho(0, float64(this.Width()), 0, float64(this.Height()), -1.0, 1.0) gl.MatrixMode(gl.MODELVIEW) }
func drawDigits(x, y int, digits []int8) { s := sdl.GetVideoSurface() lft, rgt, btm, top := 0.0, float64(s.W), float64(s.H), 0.0 gl.Enable(gl.BLEND) gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA) gl.MatrixMode(gl.PROJECTION) gl.PushMatrix() gl.LoadIdentity() gl.Ortho(lft, rgt, btm, top, 0.0, 1.0) gl.MatrixMode(gl.MODELVIEW) gl.PushMatrix() gl.LoadIdentity() w := digitImages[0].Rect.Dx() for i := 0; i < len(digits); i++ { img := digitImages[digits[i]] drawImage(x-w*i-i, y, img) } gl.MatrixMode(gl.MODELVIEW) gl.PopMatrix() gl.MatrixMode(gl.PROJECTION) gl.PopMatrix() }
func main() { glfw.Init() defer glfw.Terminate() glfw.OpenWindow(640, 480, 8, 8, 8, 8, 0, 0, glfw.Windowed) defer glfw.CloseWindow() glfw.SetWindowTitle("Tile test") glfw.Enable(glfw.StickyKeys) glfw.SetSwapInterval(1) glfw.SetKeyCallback(inputCallback) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(0, GridWidth, GridHeight, 0, -1, 1) gl.MatrixMode(gl.MODELVIEW) gl.Disable(gl.DEPTH_TEST) gl.Enable(gl.TEXTURE_2D) gl.Enable(gl.BLEND) gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA) gl.ClearColor(0.0, 0.0, 0.0, 1.0) initResources() initWorld() for Running { if (time.Since(DT).Nanoseconds() / 1000000) > 15 { //don't loop faster than every 15ms DT = time.Now() gl.Clear(gl.COLOR_BUFFER_BIT) player.update() renderScene() glfw.SwapBuffers() } } }
// OpenWindow opens a new window with the given size. func OpenWindow(w, h int) error { glfw.OpenWindowHint(glfw.WindowNoResize, 1) r, g, b := 0, 0, 0 // defaults a := 8 // 8-bit alpha channel d, s := 0, 0 // no depth or stencil buffers m := glfw.Windowed if err := glfw.OpenWindow(w, h, r, g, b, a, d, s, m); err != nil { return err } if gl.Init() != 0 { return errors.New("Failed to initialize OpenGL") } gl.Enable(gl.TEXTURE_2D) gl.Enable(gl.BLEND) gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA) gl.ClearColor(0.0, 0.0, 0.0, 0.0) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(0, float64(w), 0, float64(-h), -1, 1) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Translated(0, float64(-h), 0) return nil }
func (v *Video) Reshape(width int, height int) { x_offset := 0 y_offset := 0 r := ((float64)(height)) / ((float64)(width)) if r > 0.9375 { // Height taller than ratio h := (int)(math.Floor((float64)(0.9375 * (float64)(width)))) y_offset = (height - h) / 2 height = h } else if r < 0.9375 { // Width wider var scrW, scrH float64 if ppu.OverscanEnabled { scrW = 240.0 scrH = 224.0 } else { scrW = 256.0 scrH = 240.0 } w := (int)(math.Floor((float64)((scrH / scrW) * (float64)(height)))) x_offset = (width - w) / 2 width = w } gl.Viewport(x_offset, y_offset, width, height) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(-1, 1, -1, 1, -1, 1) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Disable(gl.DEPTH_TEST) }
/* new window size or exposure */ func (self *Viewport) Reshape(width int, height int) { self.selectionDirty = false self.screenWidth = width self.screenHeight = height gl.Viewport(0, 0, width, height) viewWidth := float64(self.screenWidth) / float64(SCREEN_SCALE) viewHeight := float64(self.screenHeight) / float64(SCREEN_SCALE) self.lplane = -viewWidth / 2 self.rplane = viewWidth / 2 self.bplane = -viewHeight / 4 self.tplane = 3 * viewHeight / 4 println("self.lplane:", self.lplane, "self.rplane", self.rplane) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(self.lplane, self.rplane, self.bplane, self.tplane, -60, 60) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() picker.x = float32(viewport.rplane) - picker.radius + blockscale*0.5 picker.y = float32(viewport.bplane) + picker.radius - blockscale*0.5 }
// Handle the window being resized. func reshape(width int, height int) { // Render into the entire window. gl.Viewport(0, 0, width, height) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() // Configure the Frustrum so the front face of the rendering // volume fills the screen. w := float64(width) h := float64(height) depth := (w + h) / 2 near := depth / 2.0 right := w / 4.0 top := h / 4.0 far := 4 * depth gl.Frustum(-right, right, -top, top, near, far) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() // Center the rendering volume in the viewport. Its origin // is at the far lower left corner. gl.Translated(-w/2, -h/2, -2*depth) }
// reset our viewport after a window resize func resizeWindow(width, height int) { // protect against a divide by zero if height == 0 { height = 1 } // Setup our viewport gl.Viewport(0, 0, int(width), int(height)) // change to the projection matrix and set our viewing volume. gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() // aspect ratio aspect := gl.GLdouble(gl.GLfloat(width) / gl.GLfloat(height)) // Set our perspective. // This code is equivalent to using gluPerspective as in the original tutorial. var fov, near, far gl.GLdouble fov = 45.0 near = 0.1 far = 100.0 top := gl.GLdouble(math.Tan(float64(fov*math.Pi/360.0))) * near bottom := -top left := aspect * bottom right := aspect * top gl.Frustum(float64(left), float64(right), float64(bottom), float64(top), float64(near), float64(far)) // Make sure we're changing the model view and not the projection gl.MatrixMode(gl.MODELVIEW) // Reset the view gl.LoadIdentity() }
func display() { gl.Clear(gl.COLOR_BUFFER_BIT) bitmap_output(40, 35, "This is written in a GLUT bitmap font.", glut.BITMAP_TIMES_ROMAN_24) bitmap_output(30, 210, "More bitmap text is a fixed 9 by 15 font.", glut.BITMAP_9_BY_15) bitmap_output(70, 240, " Helvetica is yet another bitmap font.", glut.BITMAP_HELVETICA_18) gl.MatrixMode(gl.PROJECTION) gl.PushMatrix() gl.LoadIdentity() glu.Perspective(40.0, 1.0, 0.1, 20.0) gl.MatrixMode(gl.MODELVIEW) gl.PushMatrix() glu.LookAt(0.0, 0.0, 4.0, /* eye is at (0,0,30) */ 0.0, 0.0, 0.0, /* center is at (0,0,0) */ 0.0, 1.0, 0.0) /* up is in postivie Y direction */ gl.PushMatrix() gl.Translatef(0, 0, -4) gl.Rotatef(50, 0, 1, 0) stroke_output(-2.5, 1.1, " This is written in a", glut.STROKE_ROMAN) stroke_output(-2.5, 0, " GLUT stroke font.", glut.STROKE_ROMAN) stroke_output(-2.5, -1.1, "using 3D perspective.", glut.STROKE_ROMAN) gl.PopMatrix() gl.MatrixMode(gl.MODELVIEW) gl.PopMatrix() gl.MatrixMode(gl.PROJECTION) gl.PopMatrix() gl.MatrixMode(gl.MODELVIEW) gl.Flush() }
// Initialize the OpenGL configuration with the information from the current window. func InitGLWindow(w, h int) { gl.Viewport(0, 0, w, h) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() glu.Perspective(45.0, float64(w)/float64(h), 0.1, 100.0) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() }
func reshape(w, h int) { gl.Viewport(0, 0, w, h) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(0, float64(w), 0, float64(h), -1, 1) gl.Scalef(1, -1, 1) gl.Translatef(0, float32(-h), 0) gl.MatrixMode(gl.MODELVIEW) }
func (self *Console) Draw(t int64) { gl.MatrixMode(gl.MODELVIEW) gl.PushMatrix() gl.LoadIdentity() gl.Disable(gl.DEPTH_TEST) gl.Disable(gl.LIGHTING) gl.Disable(gl.LIGHT0) gl.Disable(gl.LIGHT1) h := float32(consoleFont.height) * PIXEL_SCALE margin := float32(3.0) * PIXEL_SCALE consoleHeight := 3 * h gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Color4ub(0, 0, 0, 208) gl.Begin(gl.QUADS) gl.Vertex2f(float32(viewport.lplane), float32(viewport.bplane)+consoleHeight+margin*2) // Bottom Left Of The Texture and Quad gl.Vertex2f(float32(viewport.rplane), float32(viewport.bplane)+consoleHeight+margin*2) // Bottom Right Of The Texture and Quad gl.Vertex2f(float32(viewport.rplane), float32(viewport.bplane)) // Top Right Of The Texture and Quad gl.Vertex2f(float32(viewport.lplane), float32(viewport.bplane)) // Top Left Of The Texture and Quad gl.End() gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-h, 0) consoleFont.Print(fmt.Sprintf("FPS: %5.2f V: %d (%d) CH: %d M: %d", self.fps, self.vertices, self.culledVertices, len(TheWorld.chunks), len(TheWorld.mobs))) gl.LoadIdentity() gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-2*h, 0) consoleFont.Print(fmt.Sprintf("X: %5.2f Y: %4.2f Z: %5.2f H: %5.2f (%s) D: %0.1f (%d)", ThePlayer.position[XAXIS], ThePlayer.position[YAXIS], ThePlayer.position[ZAXIS], ThePlayer.heading, HeadingToCompass(ThePlayer.heading), ThePlayer.distanceTravelled, ThePlayer.distanceFromStart)) gl.LoadIdentity() gl.Translatef(float32(viewport.lplane)+margin, float32(viewport.bplane)+consoleHeight+margin-3*h, 0) numgc := uint32(0) avggc := float64(0) var last3 [3]float64 if self.mem.NumGC > 3 { numgc = self.mem.NumGC avggc = float64(self.mem.PauseTotalNs) / float64(self.mem.NumGC) / 1e6 index := int(numgc) - 1 if index > 255 { index = 255 } last3[0] = float64(self.mem.PauseNs[index]) / 1e6 last3[1] = float64(self.mem.PauseNs[index-1]) / 1e6 last3[2] = float64(self.mem.PauseNs[index-2]) / 1e6 } consoleFont.Print(fmt.Sprintf("Mem: %.1f/%.1f GC: %.1fms [%d: %.1f, %.1f, %.1f] ChGen: %.1fms | Sc: %.1f TOD: %.1f", float64(self.mem.Alloc)/(1024*1024), float64(self.mem.Sys)/(1024*1024), avggc, numgc, last3[0], last3[1], last3[2], float64(self.chunkGenerationTime)/1e6, viewport.scale, timeOfDay)) gl.PopMatrix() }
func onResize(w, h int) { gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Viewport(0, 0, w, h) gl.Ortho(0, float64(w), float64(h), 0, -1.0, 1.0) gl.ClearColor(1, 1, 1, 0) gl.Clear(gl.COLOR_BUFFER_BIT) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() }
func initialize(WIDTH, HEIGHT int) { gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(0, float64(WIDTH), float64(HEIGHT), 0, 0, 1) gl.MatrixMode(gl.MODELVIEW) gl.Disable(gl.DEPTH_TEST) }
func onResize(w, h int) { if h == 0 { h = 1 } gl.Viewport(0, 0, w, h) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() glu.Perspective(45.0, float64(w)/float64(h), 0.1, 100.0) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() }
/* new window size or exposure */ func reshape(width int, height int) { h := float64(height) / float64(width) gl.Viewport(0, 0, width, height) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Frustum(-1.0, 1.0, -h, h, 5.0, 60.0) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Translatef(0.0, 0.0, -40.0) }
func onResize(w, h int) { if h == 0 { h = 1 } gl.Viewport(0, 0, w, h) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Ortho(-1, 1, -1, 1, -1, 1) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Disable(gl.DEPTH_TEST) }
func (this *Window) reshape(w, h int) { gl.Viewport(0, 0, w, h) ratio := Double(w) / Double(h) var znear, zfar, fovx Double = 0.01, 65536.0, 80.0 this.projectionMatrix = mat4.Projection(fovx.ToRad(), ratio, znear, zfar) if globals.UseShader { program.SetProjectionMatrix(this.projectionMatrix) program.SetFarClipplane(zfar) } gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.LoadMatrixd(this.projectionMatrix.Ptr()) gl.MatrixMode(gl.MODELVIEW) }
func initScreen() { sdl.Init(sdl.INIT_VIDEO) const ( resx int = 640 resy int = 480 ) var ( screen = sdl.SetVideoMode(resx, resy, 16, sdl.OPENGL) ) if screen == nil { sdl.Quit() panic("Couldn't set GL video mode: " + sdl.GetError() + "\n") } if gl.Init() != 0 { panic("gl error") } gl.MatrixMode(gl.PROJECTION) //gl.MatrixMode(gl.MODELVIEW) gl.Viewport(0, 0, int(screen.W), int(screen.H)) gl.LoadIdentity() gl.Ortho(0, float64(screen.W), float64(screen.H), 0, -1.0, 1.0) //gl.DepthRange(-1, 1) gl.ClearColor(0, 0, 0, 0) gl.Clear(gl.COLOR_BUFFER_BIT) }
func (s *Sprite) Draw(x, y, angle, scale float32, blend bool) { gl.Enable(gl.TEXTURE_2D) gl.Disable(gl.COLOR_MATERIAL) if blend { gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA) gl.Enable(gl.BLEND) } else { gl.Disable(gl.BLEND) gl.BlendFunc(gl.ONE, gl.ZERO) } gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Translatef(x, y, 0) gl.Rotatef(angle*360/(2*math.Pi), 0, 0, 1) gl.Scalef(scale, scale, 1) s.tex.Bind(gl.TEXTURE_2D) gl.Begin(gl.QUADS) gl.Color3f(1, 1, 1) gl.TexCoord2d(0, 0) gl.Vertex3f(-0.5*s.width, -0.5*s.height, 0) gl.TexCoord2d(1, 0) gl.Vertex3f(0.5*s.width, -0.5*s.height, 0) gl.TexCoord2d(1, 1) gl.Vertex3f(0.5*s.width, 0.5*s.height, 0) gl.TexCoord2d(0, 1) gl.Vertex3f(-0.5*s.width, 0.5*s.height, 0) gl.End() gl.Disable(gl.TEXTURE_2D) gl.Disable(gl.BLEND) }
func (self *Picker) Draw(t int64) { gl.MatrixMode(gl.MODELVIEW) gl.PushMatrix() gl.LoadIdentity() gl.Disable(gl.DEPTH_TEST) gl.Disable(gl.LIGHTING) gl.Disable(gl.LIGHT0) gl.Disable(gl.LIGHT1) gl.Begin(gl.TRIANGLE_FAN) gl.Color4ub(0, 0, 0, 128) gl.Vertex2f(self.x, self.y) for angle := float64(0); angle <= 2*math.Pi; angle += math.Pi / 2 / 10 { gl.Vertex2f(self.x-float32(math.Sin(angle))*self.radius, self.y+float32(math.Cos(angle))*self.radius) } gl.End() self.DrawItemHighlight(t, ThePlayer.currentAction) self.DrawPlayerItems(t, true) gl.PopMatrix() }
func (self *Pause) Draw(t int64) { gl.MatrixMode(gl.MODELVIEW) gl.PushMatrix() gl.LoadIdentity() gl.Disable(gl.DEPTH_TEST) gl.Disable(gl.LIGHTING) gl.Disable(gl.LIGHT0) gl.Disable(gl.LIGHT1) gl.Color4ub(0, 0, 0, 240) gl.Begin(gl.QUADS) gl.Vertex2f(float32(viewport.lplane), float32(viewport.bplane)) gl.Vertex2f(float32(viewport.rplane), float32(viewport.bplane)) gl.Vertex2f(float32(viewport.rplane), float32(viewport.tplane)) gl.Vertex2f(float32(viewport.lplane), float32(viewport.tplane)) gl.End() str := "paused" h, w := pauseFont.Measure(str) // x := (viewport.rplane - viewport.lplane - w) / 2 // y := (viewport.tplane - viewport.bplane - h) / 2 gl.Translated(-w/2, -h/2, 0) pauseFont.Print(str) gl.PopMatrix() }
func (this *Window) reshape(w, h int) { gl.Viewport(0, 0, w, h) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() ratio := float64(w) / float64(h) znear, zfar, fovx := 0.01, 65536.0, 80.0 /*var top, bottom, left, right float64 right = znear * math.Tan(DegToRad(.5*fovx)) left = -right top = right/ratio bottom = -top gl.Frustum(left,right,bottom,top,znear, zfar)//*/ this.projectionMatrix = mat4.Projection(DegToRad(fovx), ratio, znear, zfar) gl.LoadMatrixd(this.projectionMatrix.Ptr()) gl.MatrixMode(gl.MODELVIEW) }
func (this *Window) resetModelViewMatrix() { if globals.UseShader { program.SetModelMatrix(mat4.Identity()) } gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() }
func size_window(x, y int, fov, aspect, min_cull, max_cull float64) { gl.Viewport(0, 0, x, y) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() glu.Perspective(fov, aspect, min_cull, max_cull) gl.Enable(gl.DEPTH_TEST) }
func (self *Viewport) Perspective(fovy, aspect, zNear, zFar float64) { gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() var xmin, xmax, ymin, ymax float64 ymax = zNear * math.Tan(fovy*math.Pi/360.0) ymin = -ymax xmin = ymin * aspect xmax = ymax * aspect gl.Frustum(xmin, xmax, ymin, ymax, zNear, zFar) gl.MatrixMode(gl.MODELVIEW) gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST) gl.DepthMask(true) }
//Callback for window resize events. //Updates Settings.ScreenSize as well as the size of the main camera. func OnResize(width, height int) { if height == 0 { height = 1 } w, h := float64(width), float64(height) ScreenSize = vect.Vect{w, h} gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() //camera centered at (0,0) gl.Ortho(0, w, h, 0, 1, -1) gl.MatrixMode(gl.MODELVIEW) //gl.Translated(.375, .375, 0) //gl.Translated(-w/8, -h/2, 0) //gl.Scaled(32, 32, 1) }
func initGl() { h := float64(height) / float64(width) gl.Viewport(0, 0, width, height) gl.MatrixMode(gl.PROJECTION) gl.LoadIdentity() gl.Frustum(-1.0, 1.0, -h, h, 5.0, 60.0) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Translatef(0.0, 0.0, -6.0) gl.EnableClientState(gl.VERTEX_ARRAY) gl.EnableClientState(gl.TEXTURE_COORD_ARRAY) gl.VertexPointer(3, 0, &vertices[0][0]) gl.TexCoordPointer(2, 0, &texCoords[0][0]) }
func drawScene() { gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) gl.MatrixMode(gl.MODELVIEW) gl.LoadIdentity() gl.Color3f(1, 1, 1) drawShapes(space) glfw.SwapBuffers() }