コード例 #1
0
ファイル: fontdemo.go プロジェクト: himanshushekhar/glut
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()
}
コード例 #2
0
ファイル: render.go プロジェクト: james4k/exp
func (w *Window) renderUpload() {
	/*
		for _, node := range w.nodes {
			node.gfxupload()
		}
	*/
	gl.Flush()
}
コード例 #3
0
ファイル: main.go プロジェクト: JamesClonk/asteroids
func runGameLoop(window *glfw.Window) {
	for !window.ShouldClose() {
		// update objects
		updateObjects()

		// hit detection
		hitDetection()

		// ---------------------------------------------------------------
		// draw calls
		gl.Clear(gl.COLOR_BUFFER_BIT)

		drawCurrentScore()
		drawHighScore()

		if isGameWon() {
			drawWinningScreen()
		} else if isGameLost() {
			drawGameOverScreen()
		}

		// draw everything 9 times in a 3x3 grid stitched together for seamless clipping
		for x := -1.0; x < 2.0; x++ {
			for y := -1.0; y < 2.0; y++ {
				gl.MatrixMode(gl.MODELVIEW)
				gl.PushMatrix()
				gl.Translated(gameWidth*x, gameHeight*y, 0)

				drawObjects()

				gl.PopMatrix()
			}
		}

		gl.Flush()
		window.SwapBuffers()
		glfw.PollEvents()

		// switch resolution
		if altEnter {
			window.Destroy()

			fullscreen = !fullscreen
			var err error
			window, err = initWindow()
			if err != nil {
				panic(err)
			}

			altEnter = false

			gl.LineWidth(1)
			if fullscreen {
				gl.LineWidth(2)
			}
		}
	}
}
コード例 #4
0
ファイル: simple.go プロジェクト: himanshushekhar/glut
func display() {
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.Begin(gl.TRIANGLES)
	gl.Color3f(0.0, 0.0, 1.0) /* blue */
	gl.Vertex2i(0, 0)
	gl.Color3f(0.0, 1.0, 0.0) /* green */
	gl.Vertex2i(200, 200)
	gl.Color3f(1.0, 0.0, 0.0) /* red */
	gl.Vertex2i(20, 200)
	gl.End()
	gl.Flush() /* Single buffered, so needs a flush. */
}
コード例 #5
0
ファイル: window.go プロジェクト: jreimers/goscilloscope
func (rw *RenderWindow) draw() {
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.Enable(gl.LINE_SMOOTH)
	for chanIdx, channel := range rw.Channels {
		color := channel.GetColor()
		gl.Color4f(color[0], color[1], color[2], color[3])
		gl.Begin(gl.LINES)
		lastY := int64(0)
		for i := 0; i < len(rw.renderBuffers[chanIdx]); i += 1 {
			y := rw.Height - (rw.renderBuffers[chanIdx][i] * rw.Height / 1024)
			gl.Vertex2i(i-1, int(lastY))
			gl.Vertex2i(i, int(y))
			lastY = y
		}
		gl.Flush()
		gl.End()
	}
	glfw.SwapBuffers()
}
コード例 #6
0
ファイル: simple.go プロジェクト: KUGDC/GoServe
func display() {
	gl.Clear(gl.COLOR_BUFFER_BIT)

	gl.Begin(gl.TRIANGLES)
	l := t.units
	for e := l.Front(); e != nil; e = e.Next() {
		b := e.Value.(*Entity)
		//r := b.rot_matrix
		p := b.pos
		gl.Color3f(0.0, 0.0, 1.0) /* blue */
		gl.Vertex2f(p[0], p[1])
		gl.Color3f(0.0, 1.0, 0.0) /* green */
		gl.Vertex2f(20+p[0], 20+p[1])
		gl.Color3f(1.0, 0.0, 0.0) /* red */
		gl.Vertex2f(p[0], 20+p[1])
	}
	gl.End()
	gl.Flush() /* Single buffered, so needs a flush. */

	glut.SwapBuffers()
}
コード例 #7
0
ファイル: framebuffer.go プロジェクト: pikkpoiss/ld27
// Draws the contents of the framebuffer at the requested width and height.
func (fb *Framebuffer) Draw(w int, h int) {
	gl.Viewport(0, 0, w, h)
	gl.MatrixMode(gl.PROJECTION)
	gl.LoadIdentity()
	gl.Ortho(0, 1, 0, 1, 1, -1)
	gl.Enable(gl.TEXTURE_2D)
	fb.Texture.Bind(gl.TEXTURE_2D)
	gl.MatrixMode(gl.MODELVIEW)
	gl.LoadIdentity()
	gl.Begin(gl.QUADS)
	gl.TexCoord2d(0, 0)
	gl.Vertex3f(0.0, 0.0, 0)
	gl.TexCoord2d(1, 0)
	gl.Vertex3f(1.0, 0.0, 0)
	gl.TexCoord2d(1, 1)
	gl.Vertex3f(1.0, 1.0, 0)
	gl.TexCoord2d(0, 1)
	gl.Vertex3f(0.0, 1.0, 0)
	gl.End()
	gl.Flush()
}
コード例 #8
0
ファイル: main.go プロジェクト: TheOnly92/gexic
func main() {
	sys := Make()
	sys.Startup()
	defer sys.Shutdown()
	// InitQueue()

	sys.CreateWindow(1024, 768, "Gexic")
	gl.ClearColor(1, 1, 1, 0.)
	initGL()

	prevSelectPos = []int{0, 0, 0}

	// PurgeQueue()
	// genHexMap()
	hexMap2 = GenHexMap()
	// for matches := checkHexMap(); len(matches) > 0; matches = checkHexMap() {
	// 	removeHexAndGenNew(matches)
	// }
	glfw.SetMouseButtonCallback(MouseButtonCallback)
	glfw.SetCharCallback(charCallback)
	glfw.SetMousePosCallback(MousePosCallback)
	currExX = -1
	currExY = -1

	for sys.CheckExitMainLoop() {
		start := glfw.Time()
		wait := float64(1) / float64(30)
		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
		gl.Enable(gl.TEXTURE_2D)
		gl.Enable(gl.BLEND)
		gl.Disable(gl.DEPTH_TEST)
		// renderHexMap()
		wallpaper.Bind(gl.TEXTURE_2D)
		gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
		gl.Begin(gl.QUADS)
		gl.TexCoord2f(0, 0)
		gl.Vertex2i(0, 0)
		gl.TexCoord2f(0, 1)
		gl.Vertex2i(0, 768)
		gl.TexCoord2f(1, 1)
		gl.Vertex2i(1024, 768)
		gl.TexCoord2f(1, 0)
		gl.Vertex2i(1024, 0)
		gl.End()
		hexMap2.Render()
		hexRotate.AnimateAndExecute()
		hexShrink.AnimateAndExecute()
		hexFall.AnimateAndExecute()
		if !mouse.locked {
			x, y := mouse.GetXY()
			hexMap2.CalcClosestCenter(x, y)
		}
		gl.Flush()
		gl.Disable(gl.TEXTURE_2D)
		gl.Disable(gl.BLEND)
		sys.Refresh()
		diff := glfw.Time() - start
		if diff < wait {
			glfw.Sleep(wait - diff)
		}
	}
}
コード例 #9
0
ファイル: main.go プロジェクト: TheOnly92/gexic
func renderHexMap() {
	gl.Enable(gl.TEXTURE_2D)
	gl.Enable(gl.BLEND)
	gl.Disable(gl.DEPTH_TEST)
	wallpaper.Bind(gl.TEXTURE_2D)
	gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
	gl.Begin(gl.QUADS)
	gl.TexCoord2f(0, 0)
	gl.Vertex2i(0, 0)
	gl.TexCoord2f(0, 1)
	gl.Vertex2i(0, 768)
	gl.TexCoord2f(1, 1)
	gl.Vertex2i(1024, 768)
	gl.TexCoord2f(1, 0)
	gl.Vertex2i(1024, 0)
	gl.End()
	gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.DECAL)
	gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
	gl.PushMatrix()
	gl.Translatef(80, 80, 0)
	for x := 0; x < 10; x++ {
		maxy := 8
		topy := 19
		if x%2 == 1 {
			maxy = 9
			topy = 0
		}
		starty := 0
		for y := starty; y < maxy; y++ {
			if currExX > -1 && currExY > -1 && starRotate {
				if y == currExY && x == currExX || y == currExY+1 && x == currExX || y == currExY-1 && x == currExX || currExX%2 == 0 && ((currExX == x-1 || currExX == x+1) && currExY == y-1 || (currExX == x-1 || currExX == x+1) && currExY == y) || currExX%2 == 1 && ((currExX == x-1 || currExX == x+1) && currExY == y || (currExX == x-1 || currExX == x+1) && currExY == y+1) {
					continue
				}
			} else if timesToRotate > 0 {
				// if y == currExY && x == currExX || currExX%2 == 0 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY+1) || currExX%2 == 1 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY-1) {
				// 	continue
				// }
				found := false
				for _, v := range selectedHex {
					if y == v[1] && x == v[0] {
						found = true
						break
					}
				}
				if found {
					continue
				}
			}
			found := false
			for _, v := range currentMatches {
				if scale > 0 && v[0] == x && v[1] == y || scale <= 0 && v[0] == x && v[1] >= y {
					found = true
					break
				}
			}
			for _, v := range starMatches {
				if starAlpha > 0 && v[0] == x && v[1] == y || starAlpha <= 0 && v[0] == x && v[1] >= y {
					found = true
					break
				}
			}
			if found || len(currStarCenter) > 0 && currStarCenter[0] == x && currStarCenter[1] == y {
				continue
			}
			gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			drawHex(x*33, topy+y*38, hexMap[x][y], 1)
		}
	}
	gl.PopMatrix()
	if len(currentMatches) > 0 || len(starMatches) > 0 {
		mouseLock = true
		if len(currentMatches) > 0 && scale > 0 {
			scale -= 0.1
			for _, v := range currentMatches {
				gl.PushMatrix()
				topy := 19
				if v[0]%2 == 1 {
					topy = 0
				}
				gl.Translatef(float32(v[0]*33+102), float32(v[1]*38+topy+94), 0)
				gl.Scalef(scale, scale, 1)
				gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
				drawHex(-22, -14, hexMap[v[0]][v[1]], 1)
				gl.PopMatrix()
			}
		} else if len(starMatches) > 0 && starAlpha > 0 {
			starAlpha -= 0.05
			// starAlpha = 0.7
			starScale += 0.05
			// starScale = 1.4
			gl.PushMatrix()
			topy := 19
			pm := 0
			if currStarCenter[0]%2 == 1 {
				topy = 0
				pm = -1
			}
			gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
			drawHex(-22, -14, 6, 1)
			gl.PopMatrix()
			gl.PushMatrix()
			gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
			gl.Scalef(starScale, starScale, 1)
			drawHex(-22, -14-HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]-1], starAlpha)
			drawHex(-22, -20+HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]+1], starAlpha)
			drawHex(-52, -36, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm], starAlpha)
			drawHex(-52, -40+HEX_HEIGHT, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm+1], starAlpha)
			drawHex(8, -36, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm], starAlpha)
			drawHex(8, -40+HEX_HEIGHT, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm+1], starAlpha)
			gl.PopMatrix()
		} else {
			if fallticks == 0 {
				animateFall = make([]*freefall, 0)
				for x := 0; x < 10; x++ {
					topy := 19
					if x%2 == 1 {
						topy = 0
					}
					fromy := -1
					for _, v := range currentMatches {
						if v[0] != x {
							continue
						}
						if v[1] > fromy {
							fromy = v[1]
						}
					}
					for _, v := range starMatches {
						if v[0] != x {
							continue
						}
						if v[1] > fromy {
							fromy = v[1]
						}
					}
					if fromy == -1 {
						continue
					}
					for y := fromy; y >= 0; y-- {
						found := false
						for _, v := range currentMatches {
							if v[0] == x && v[1] == y {
								found = true
								break
							}
						}
						for _, v := range starMatches {
							if v[0] == x && v[1] == y {
								found = true
								break
							}
						}
						if found {
							continue
						}
						animateFall = append(animateFall, &freefall{x, y, getFallTargetY(x, y), math.Pow(float64(y), 2)/16 + 0.5})
						gl.PushMatrix()
						gl.Translatef(float32(x*33+102), float32(y*38+topy+94), 0)
						gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
						drawHex(-22, -14, hexMap[x][y], 1)
						gl.PopMatrix()
					}
				}
				fallticks++
			} else {
				stillFalling := 0
				for _, v := range animateFall {
					topy := 19
					if v.x%2 == 1 {
						topy = 0
					}
					newy := v.accel * math.Pow(float64(fallticks), 2) / 2
					gl.PushMatrix()
					gl.Translatef(float32(v.x*33+102), float32(math.Min(float64(v.y*38+topy+94)+newy, float64(v.targetY*38+topy+94))), 0)
					gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
					drawHex(-22, -14, hexMap[v.x][v.y], 1)
					gl.PopMatrix()
					if float64(v.y*38+topy+94)+newy < float64(v.targetY*38+topy+94) {
						stillFalling++
					}
				}
				fallticks++
				if stillFalling == 0 {
					starScale = 1
					starAlpha = 0
					removeHexAndGenNew(currentMatches)
					makeStarAndGenNew(starMatches)
					currentMatches = checkHexMap()
					starMatches = checkHexStar()
					currStarCenter = []int{}
					scale = 1
					fallticks = 0
					mouseLock = false
					fmt.Println("Mouse unlocked 1")
					animateFall = nil
				}
			}
		}
	}
	if currExX > -1 && currExY > -1 {
		gl.PushMatrix()
		topy := 19
		if currExX%2 == 1 {
			topy = 0
		}
		if starRotate {
			timesToRotate = 0
			gl.Translatef(float32(currExX*33+102), float32(currExY*38+topy+94), 0)
			gl.Scalef(1.3, 1.3, 1)
			gl.Rotatef(rotate, 0, 0, 1)
			drawHex(-22, -14, 6, 1)
			drawHex(-22, -14-HEX_HEIGHT, hexMap[currExX][currExY-1], 1)
			drawHex(-22, -20+HEX_HEIGHT, hexMap[currExX][currExY+1], 1)
			pm := 0
			if currExX%2 == 1 {
				pm = -1
			}
			drawHex(-52, -36, hexMap[currExX-1][currExY+pm], 1)
			drawHex(-52, -40+HEX_HEIGHT, hexMap[currExX-1][currExY+pm+1], 1)
			drawHex(8, -36, hexMap[currExX+1][currExY+pm], 1)
			drawHex(8, -40+HEX_HEIGHT, hexMap[currExX+1][currExY+pm+1], 1)
		} else {
			// gl.Translatef(float32(currExX*33+HEX_WIDTH+80), float32(currExxY*38+topy+20+80), 0)
			gl.Translatef(float32(prevSelectPos[0]), float32(prevSelectPos[1]), 0)
			gl.Scalef(1.3, 1.3, 1)
			gl.Rotatef(rotate, 0, 0, 1)
			for _, v := range selectedHex {
				switch v[2] {
				case 1:
					drawHex(-32, -34, hexMap[v[0]][v[1]], 1)
				case 2:
					drawHex(0, -17, hexMap[v[0]][v[1]], 1)
				case 3:
					drawHex(-32, 0, hexMap[v[0]][v[1]], 1)
				case 4:
					drawHex(-44, -19, hexMap[v[0]][v[1]], 1)
				case 5:
					drawHex(-12, -36, hexMap[v[0]][v[1]], 1)
				case 6:
					drawHex(-12, -2, hexMap[v[0]][v[1]], 1)
				}
			}
			// if currExX%2 == 0 {
			// 	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			// 	drawHex(-12, -36, hexMap[currExX+1][currExY], 1)
			// } else {
			// 	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			// 	drawHex(-12, -36, hexMap[currExX+1][currExY-1], 1)
			// }
			// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			// drawHex(-44, -19, hexMap[currExX][currExY], 1)
			// if currExX%2 == 0 {
			// 	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			// 	drawHex(-12, -2, hexMap[currExX+1][currExY+1], 1)
			// } else {
			// 	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
			// 	drawHex(-12, -2, hexMap[currExX+1][currExY], 1)
			// }
		}
		gl.PopMatrix()
		if !starRotate && rotate < 120 {
			rotate += 15
			// rotate = 15
		} else if starRotate && rotate < 60 {
			rotate += 6
		} else {
			if starRotate {
				if currExX%2 == 0 {
					hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1], hexMap[currExX-1][currExY] = hexMap[currExX-1][currExY], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1]
				} else {
					hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY], hexMap[currExX-1][currExY-1] = hexMap[currExX-1][currExY-1], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY]
				}
			} else {
				v2 := make([][]int, 3)
				for _, v := range selectedHex {
					idx := 0
					switch v[2] {
					case 1, 4:
						idx = 0
					case 2, 5:
						idx = 1
					case 3, 6:
						idx = 2
					}
					v2[idx] = []int{v[0], v[1]}
					fmt.Println(idx, v[0], v[1])
				}
				hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]], hexMap[v2[2][0]][v2[2][1]] = hexMap[v2[2][0]][v2[2][1]], hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]]
			}
			starMatches = checkHexStar()
			if len(starMatches) > 6 {
				fmt.Println(starMatches)
			}
			if len(starMatches) >= 6 {
				timesToRotate = 0
				rotate = 0
				currExX = -1
				currExY = -1
				starScale = 1
				starAlpha = 1
				starRotate = false
				currStarCenter = getStarCenter(starMatches)
				hexMap[currStarCenter[0]][currStarCenter[1]] = 6
				// makeStarAndGenNew(starMatches)
			} else {
				matches := checkHexMap()
				if len(matches) > 0 {
					currentMatches = matches
					scale = 1
					currExX = -1
					currExY = -1
					rotate = 0
					timesToRotate = 0
					starRotate = false
				} else {
					if timesToRotate == 0 {
						currExX = -1
						currExY = -1
						rotate = 0
						timesToRotate = 0
						starRotate = false
						mouseLock = false
						fmt.Println("Mouse unlocked 3")
					}
					rotate = 0
					timesToRotate--
				}
			}
		}
	}
	if !mouseLock {
		prevSelectPos = calcClosestCenter(posX, posY)
		drawBorderAtXY(float32(prevSelectPos[0]), float32(prevSelectPos[1]), prevSelectPos[2])
	}
	gl.Flush()
	gl.Disable(gl.TEXTURE_2D)
	gl.Disable(gl.BLEND)
}
コード例 #10
0
ファイル: engine.go プロジェクト: bluepeppers/danckelmann
func (d *DisplayEngine) drawFrame() {
	toDraw := make([][]*resources.Bitmap, d.config.MapW*d.config.MapH)
	drawPasses := 0
	for x := 0; x < d.config.MapW; x++ {
		for y := 0; y < d.config.MapH; y++ {
			toDraw[x*d.config.MapW+y] = (*d.gameEngine).GetTile(x, y)
			length := len(toDraw[x*d.config.MapW+y])
			if length > drawPasses {
				drawPasses = length
			}
		}
	}

	viewport := d.viewport
	font := allegro.CreateBuiltinFont()

	// Don't want anyone changing the viewport mid frame or any such highjinks
	d.Display.SetTargetBackbuffer()

	allegro.RunInThread(func() {
		r, g, b, a := d.config.BGColor.GetRGBA()
		gl.ClearColor(
			gl.GLclampf(r)/255.0,
			gl.GLclampf(g)/255.0,
			gl.GLclampf(b)/255.0,
			gl.GLclampf(a)/255.0)

		gl.Clear(gl.COLOR_BUFFER_BIT)

		viewport.SetupTransform()

		for p := 0; p < drawPasses; p++ {
			m := d.config.MapW
			n := d.config.MapH
			for s := 0; s < m+n; s++ {
				for x := 0; x < s; x++ {
					y := s - x - 1
					if x >= m || y < 0 || y >= n {
						continue
					}
					if len(toDraw[x*d.config.MapW+y]) < p {
						continue
					}

					// Coordinates in terms of pixels
					px := (y - x) * d.config.TileW / 2
					py := (x + y) * d.config.TileH / 2
					bmp := toDraw[x*d.config.MapW+y][p]
					/*					ox := bmp.OffX
										oy := bmp.OffY*/
					bw, bh := bmp.W, bmp.H
					if viewport.OnScreen(px, py, bw, bh) {
						gl.Begin(gl.QUADS)
						bmp.Tex.Bind(gl.TEXTURE_2D)
						gl.TexCoord2f(0, 0)
						gl.Vertex3i(px, py, 0)
						gl.TexCoord2f(0, 1)
						gl.Vertex3i(px, py+bw, 0)
						gl.TexCoord2f(1, 1)
						gl.Vertex3i(px+bh, py+bw, 0)
						gl.TexCoord2f(1, 0)
						gl.Vertex3i(px+bh, py, 0)
						gl.End()
					}
				}
			}
		}

		gl.Flush()
	})

	var trans allegro.Transform
	trans.Identity()
	trans.Use()

	font.Draw(allegro.CreateColor(0, 255, 0, 255), 0, 0, 0, fmt.Sprint(int(d.fps)))

	allegro.Flip()

	d.frameDrawing.Unlock()
}
コード例 #11
0
func main() {
	b, _ := ioutil.ReadFile("./roboto/roboto-light.ttf")

	font, ferr := tt.Parse(b)

	if ferr != nil {
		fmt.Println("can't parse font %v , len %v", ferr.Error(), len(b))
	}

	fc := ft.NewContext()
	fc.SetFont(font)

	glfw.SetErrorCallback(errorCallback)

	if !glfw.Init() {
		panic("Can't init glfw!")
	}
	defer glfw.Terminate()

	window, err := glfw.CreateWindow(800, 600, "Testing", nil, nil)
	if err != nil {
		panic(err)
	}

	window.MakeContextCurrent()

	gl.Init()

	program := gl.CreateProgram()

	vertexShader := gl.CreateShader(gl.VERTEX_SHADER)
	vertexShader.Source(`
        attribute vec4 a_position;
        attribute vec2 a_coord;
        varying vec2 v_coord;
        void main() {
          gl_Position = a_position;
          v_coord = a_coord;
        }
    `)
	vertexShader.Compile()
	fmt.Printf("vertex: %v\n", vertexShader.GetInfoLog())

	fragmentShader := gl.CreateShader(gl.FRAGMENT_SHADER)
	fragmentShader.Source(`
        varying vec2 v_coord;
        uniform sampler2D s_picture;
        uniform vec4 color;
        uniform bool has_picture;
        void main() {
            if(has_picture) {
	            gl_FragColor = texture2D(s_picture, v_coord);
	        } else {
                gl_FragColor = color;
	        }
        } 
    `)

	fragmentShader.Compile()
	fmt.Printf("fragment %v \n", fragmentShader.GetInfoLog())

	program.AttachShader(vertexShader)
	program.AttachShader(fragmentShader)

	program.Link()

	// ini

	//gl.MatrixMode(gl.PROJECTION)
	//gl.Ortho(0, 640, 0, 480, 0, 1)

	gl.ClearColor(0.5, 0.5, 0.5, 0.0)

	root := widget.Widget{
		Name:       "Red",
		Rect:       image.Rect(0, 0, 800, 600),
		Background: color.RGBA{255, 128, 128, 126},
		OnClick:    widget.ClickInner,
		OnDrag:     widget.DragInner,
		OnHover:    widget.HoverInner,
		OnResize:   widget.ResizeItself,
	}

	blue := root.AddWidget(&widget.Widget{
		Name:       "Blue",
		Rect:       image.Rect(100, 100, 200, 200),
		Image:      LoadImage("./test.png"),
		Background: color.RGBA{128, 128, 255, 126},
		OnClick: func(w *widget.Widget, p image.Point) {
			root.SetTop(w)
			fmt.Println("Clicked blue box")
			widget.ClickInner(w, p)
		},
		OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
			widget.DragInner(w, p, d)
			widget.DragItself(w, p, d)
			return true
		},
		OnResize: widget.ResizeItself,
	})

	blue.AddWidget(&widget.Widget{
		Name:       "White",
		Rect:       image.Rect(90, 90, 100, 100),
		Background: color.RGBA{250, 250, 250, 250},
		OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
			widget.DragItself(w, p, d)
			blue.Resize(d)
			return true
		},
	})

	root.AddWidget(&widget.Widget{
		Name:       "Green",
		Rect:       image.Rect(100, 300, 200, 400),
		Background: color.RGBA{128, 255, 128, 126},
		OnClick: func(w *widget.Widget, p image.Point) {
			root.SetTop(w)
			w.Image = LoadImage("./test2.png")
		},
		OnDrag: widget.DragItself,
	})

	root.AddWidget(&widget.Widget{
		Name:       "Black",
		Rect:       image.Rect(100, 400, 150, 450),
		Background: color.RGBA{0, 0, 0, 126},
		OnHover: func(w *widget.Widget, p0 image.Point, p1 image.Point) {
			if p1.In(w.Rect) {
				w.Background = color.RGBA{255, 255, 255, 126}
			} else {
				w.Background = color.RGBA{0, 0, 0, 126}
			}
		},
	})

	white := root.AddWidget(&widget.Widget{
		Name:       "White",
		Text:       "Меня зовут Светлана, я из города Иваново. «Единая Россия» очень много сделала достижений: они подняли экономик… экономику, мы стали более лучшие… одеваться, и не было того что щас — это очень большие достижения! В сельском хозяйстве очень хорошо. (Гладин: Что именно в сельском хозяйстве они сделали?) Стало больше… земель за-а… много, ну… я не знаю даже как сказать… засеивать больше земель… а-а-а вот, овощи там, рожь — вот это всё. Что еще сказать… Так как у нас страна многонациональная, у нас в Москве очень много людей, которые очень помогают нам… с других городов… (вопрос Гладина: Вы считаете это достижение «Единой России»?) Да, это большое достижение! Очень хорошее даже! Видите ну… да… Видите ну у нас в Иванове очень хорошая стала медицина… а…что ещё… благоустройство в городах хорошее… с жильём… никаких проблем. Люди подмогают очень хорошо",
		Rect:       image.Rect(400, 200, 700, 500),
		Foreground: color.RGBA{0, 0, 0, 0},
		Background: color.RGBA{255, 255, 255, 126},
		OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
			root.SetTop(w)
			widget.DragInner(w, p, d)
			widget.DragItself(w, p, d)
			return true
		},
		OnResize: widget.ResizeItself,
		Padding:  image.Rect(20, 20, 20, 20),
	})

	white.AddWidget(&widget.Widget{
		Name:       "White",
		Rect:       image.Rect(290, 290, 300, 300),
		Background: color.RGBA{0, 0, 0, 250},
		OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
			widget.DragItself(w, p, d)
			white.Resize(d)
			return true
		},
	})

	x0 := 0.0
	y0 := 0.0

	window.SetMouseButtonCallback(func(w *glfw.Window, but glfw.MouseButton, act glfw.Action, key glfw.ModifierKey) {
		xpos, ypos := w.GetCursorPosition()

		if act == glfw.Press {
			root.Click(image.Point{X: int(xpos), Y: int(ypos)})

			x0, y0 = xpos, ypos
		}
	})

	window.SetCursorPositionCallback(func(w *glfw.Window, xpos float64, ypos float64) {
		root.Hover(image.Point{X: int(x0), Y: int(y0)}, image.Point{X: int(xpos), Y: int(ypos)})

		if w.GetMouseButton(glfw.MouseButtonLeft) == glfw.Press {
			root.Drag(image.Point{X: int(x0), Y: int(y0)}, image.Point{X: int(xpos - x0), Y: int(ypos - y0)})
			x0, y0 = xpos, ypos
		}

		x0, y0 = xpos, ypos
	})

	width0, height0 := window.GetSize()

	window.SetSizeCallback(func(w *glfw.Window, width int, height int) {
		gl.Viewport(0, 0, width, height)
		root.Rect.Max = image.Point{width, height}
		width0, height0 = width, height
	})

	/*switch(color_type){
	case PNG_COLOR_TYPE_GRAY:
		return GL_LUMINANCE;
	case PNG_COLOR_TYPE_GRAY_ALPHA:
		return GL_LUMINANCE_ALPHA;
	case PNG_COLOR_TYPE_RGB:
		return GL_RGB;
	case PNG_COLOR_TYPE_RGB_ALPHA:
		return GL_RGBA;
	*/

	/*
	   here init texture pool

	   texturePool := make([widget.Widget]texture)
	*/
	for !window.ShouldClose() {
		//Do OpenGL stuff
		program.Use()

		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

		root.DrawBy(image.Point{}, func(w *widget.Widget, corner image.Point) {
			var texture gl.Texture

			if w.Image != nil {
				texture = gl.GenTexture()
				texture.Bind(gl.TEXTURE_2D)
				gl.ActiveTexture(gl.TEXTURE0)

				gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
					w.Image.Rect.Dx(), w.Image.Rect.Dy(),
					0, gl.RGBA, gl.UNSIGNED_BYTE, w.Image.Pix)
			}

			leftX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
			leftY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())

			rightX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
			rightY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())

			bottomX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
			bottomY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())

			topX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
			topY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())

			vertices := []float32{
				leftX, leftY,
				rightX, rightY,
				bottomX, bottomY,
				topX, topY,
			}

			texturePoints := []float32{
				0.0, 0.0, 0.0, 1.0,
				1.0, 0.0, 1.0, 1.0,
			}

			s_picture := program.GetUniformLocation("s_picture")
			s_picture.Uniform1i(0)

			has_picture := program.GetUniformLocation("has_picture")

			if w.Image != nil {
				has_picture.Uniform1i(1)
			} else {
				has_picture.Uniform1i(0)
			}

			col := program.GetUniformLocation("color")
			r, g, b, a := w.Background.RGBA()
			col.Uniform4f(float32(r)/float32(0xFFFF), float32(g)/float32(0xFFFF), float32(b)/float32(0xFFFF), float32(a)/float32(0xFFFF))

			gl.PixelStorei(gl.UNPACK_ALIGNMENT, gl.UNSIGNED_BYTE)
			gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)

			a_position := program.GetAttribLocation("a_position")
			a_position.AttribPointer(2, gl.FLOAT, false, 0, vertices)
			a_position.EnableArray()

			a_coord := program.GetAttribLocation("a_coord")
			a_coord.AttribPointer(2, gl.FLOAT, false, 0, texturePoints)
			a_coord.EnableArray()

			gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
			gl.Flush()

			texture.Delete()

			if len(w.Text) > 0 {
				rct := w.Rect
				rct.Max = rct.Max.Sub(w.Rect.Min)
				rct.Min = rct.Min.Sub(w.Rect.Min)

				fg := image.NewRGBA(rct)
				fgu := image.NewUniform(color.RGBA{0, 16, 32, 255})
				draw.Draw(fg, fg.Bounds(), fgu, image.ZP, draw.Src)

				bg := image.NewRGBA(rct)
				bgu := image.NewUniform(color.RGBA{255, 255, 255, 255})
				draw.Draw(bg, bg.Bounds(), bgu, image.ZP, draw.Src)

				lineHeight := 20.0

				fc.SetDPI(100.0)
				fc.SetFont(font)
				fc.SetFontSize(12.0)
				fc.SetClip(bg.Bounds())
				fc.SetDst(bg)
				fc.SetSrc(fg)

				p0 := ft.Pt(w.Padding.Min.X, w.Padding.Min.Y)
				p := p0
				for _, s := range w.Text {
					p, _ = fc.DrawString(string(s), p)
					if int(p.X>>8) > rct.Max.X-w.Padding.Max.X-w.Padding.Min.X {
						p.X = p0.X
						p.Y += raster.Fix32(lineHeight * 256)
					}
				}

				var texture gl.Texture

				if bg != nil {
					texture = gl.GenTexture()
					texture.Bind(gl.TEXTURE_2D)
					gl.ActiveTexture(gl.TEXTURE0)

					gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
						bg.Rect.Dx(), bg.Rect.Dy(),
						0, gl.RGBA, gl.UNSIGNED_BYTE, bg.Pix)
				}

				leftX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
				leftY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())

				rightX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
				rightY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())

				bottomX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
				bottomY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())

				topX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
				topY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())

				vertices := []float32{
					leftX, leftY,
					rightX, rightY,
					bottomX, bottomY,
					topX, topY,
				}

				texturePoints := []float32{
					0.0, 0.0, 0.0, 1.0,
					1.0, 0.0, 1.0, 1.0,
				}

				s_picture := program.GetUniformLocation("s_picture")
				s_picture.Uniform1i(0)

				has_picture := program.GetUniformLocation("has_picture")

				if bg != nil {
					has_picture.Uniform1i(1)
				} else {
					has_picture.Uniform1i(0)
				}

				col := program.GetUniformLocation("color")
				r, g, b, a := w.Background.RGBA()
				col.Uniform4f(float32(r)/float32(0xFFFF), float32(g)/float32(0xFFFF), float32(b)/float32(0xFFFF), float32(a)/float32(0xFFFF))

				gl.PixelStorei(gl.UNPACK_ALIGNMENT, gl.UNSIGNED_BYTE)
				gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)

				a_position := program.GetAttribLocation("a_position")
				a_position.AttribPointer(2, gl.FLOAT, false, 0, vertices)
				a_position.EnableArray()

				a_coord := program.GetAttribLocation("a_coord")
				a_coord.AttribPointer(2, gl.FLOAT, false, 0, texturePoints)
				a_coord.EnableArray()

				gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
				gl.Flush()

				texture.Delete()
			}
		})

		window.SwapBuffers()
		glfw.PollEvents()
	}
}
コード例 #12
0
ファイル: main.go プロジェクト: pwaller/debris
func main() {
	var err error
	if err = glfw.Init(); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.Terminate()

	w, h := 1980, 1080
	// w, h := 1280, 768
	if err = glfw.OpenWindow(w, h, 8, 8, 8, 16, 0, 32, glfw.Fullscreen); err != nil {
		fmt.Fprintf(os.Stderr, "[e] %v\n", err)
		return
	}

	defer glfw.CloseWindow()

	glfw.SetSwapInterval(1)
	glfw.SetWindowTitle("Debris")

	quadric = glu.NewQuadric()

	gl.Enable(gl.CULL_FACE)

	gl.Enable(gl.DEPTH_TEST)
	gl.DepthFunc(gl.LEQUAL)

	gl.Enable(gl.NORMALIZE)

	gl.Enable(gl.BLEND)
	gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)

	gl.ShadeModel(gl.SMOOTH)
	gl.Enable(gl.LIGHTING)

	var (
		ambient        = []float32{0.1, 0.3, 0.6, 1}
		diffuse        = []float32{1, 1, 0.5, 1}
		specular       = []float32{0.4, 0.4, 0.4, 1}
		light_position = []float32{1, 0, 0, 0}

		// mat_specular  []float32 = []float32{1, 1, 0.5, 1}
		mat_specular  = []float32{1, 1, 0.75, 1}
		mat_shininess = float32(120)
		// light_position []float32 = []float32{0.0, 0.0, 1.0, 0.0}
	)

	const (
		fov               = 1.1 // degrees
		znear             = 145
		zfar              = 155
		camera_z_offset   = -150
		camera_x_rotation = 0 // degrees
		// camera_x_rotation = 20 // degrees

		starfield_fov = 45

		faces        = 1000
		earth_radius = 1
	)

	gl.Lightfv(gl.LIGHT1, gl.AMBIENT, ambient)
	gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, diffuse)
	gl.Lightfv(gl.LIGHT1, gl.SPECULAR, specular)
	gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
	gl.Enable(gl.LIGHT1)

	mat_emission := []float32{0, 0, 0.1, 1}
	gl.Materialfv(gl.FRONT_AND_BACK, gl.EMISSION, mat_emission)
	gl.Materialfv(gl.FRONT_AND_BACK, gl.SPECULAR, mat_specular)
	gl.Materialf(gl.FRONT_AND_BACK, gl.SHININESS, mat_shininess)

	gl.ClearColor(0.02, 0.02, 0.02, 1)
	gl.ClearDepth(1)
	gl.ClearStencil(0)
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)

	b := createBuffer()

	planetoids := []*Planetoid{}
	for i := 0; i < 1000; i++ {
		p := &Planetoid{
			apogee:  1.2 + rand.Float64()*0.7,
			perigee: 1.5,
			// inclination: 45,
			inclination: rand.Float64()*20 - 10,
			// inclination: 0,
			phase0:      rand.Float64() * 360,
			rising_node: rand.Float64() * 10,
			phase:       0,
			// radius:      rand.Float32()*0.05 + 0.01, //float32(r),
			radius: rand.Float32()*0.0125 + 0.005, //float32(r),
			// quadric:     glu.NewQuadric(),
			circle: b,
		}
		planetoids = append(planetoids, p)
	}

	// Initial projection matrix:

	var aspect float64

	glfw.SetWindowSizeCallback(func(w, h int) {
		gl.Viewport(0, 0, w, h)

		gl.MatrixMode(gl.PROJECTION)
		gl.LoadIdentity()
		aspect = float64(w) / float64(h)
		glu.Perspective(fov, aspect, znear, zfar)
	})

	d := float64(0)

	wireframe := false
	atmosphere := false
	polar := false
	rotating := false
	front := false
	earth := true
	cone := true
	shadowing := true
	tilt := false
	running := true

	glfw.SetKeyCallback(func(key, state int) {
		if state != glfw.KeyPress {
			// Don't act on key coming up
			return
		}

		switch key {
		case 'A':
			atmosphere = !atmosphere
		case 'C':
			cone = !cone
		case 'E':
			earth = !earth
		case 'R':
			rotating = !rotating
		case 'F':
			front = !front
			if front {
				gl.FrontFace(gl.CW)
			} else {
				gl.FrontFace(gl.CCW)
			}
		case 'S':
			shadowing = !shadowing
		case 'T':
			tilt = !tilt
		case 'W':
			wireframe = !wireframe
			method := gl.GLenum(gl.FILL)
			if wireframe {
				method = gl.LINE
			}
			gl.PolygonMode(gl.FRONT_AND_BACK, method)

		case glfw.KeyF2:
			println("Screenshot captured")
			// glh.CaptureToPng("screenshot.png")

			w, h := glh.GetViewportWH()
			im := image.NewRGBA(image.Rect(0, 0, w, h))
			glh.ClearAlpha(1)
			gl.Flush()
			glh.CaptureRGBA(im)

			go func() {
				fd, err := os.Create("screenshot.png")
				if err != nil {
					panic("Unable to open file")
				}
				defer fd.Close()

				png.Encode(fd, im)
			}()

		case 'Q', glfw.KeyEsc:
			running = !running

		case glfw.KeySpace:
			polar = !polar
		}
	})

	_ = rand.Float64

	stars := glh.NewMeshBuffer(
		glh.RenderArrays,
		glh.NewPositionAttr(3, gl.DOUBLE, gl.STATIC_DRAW),
		glh.NewColorAttr(3, gl.DOUBLE, gl.STATIC_DRAW))

	const Nstars = 50000
	points := make([]float64, 3*Nstars)
	colors := make([]float64, 3*Nstars)

	for i := 0; i < Nstars; i++ {
		const R = 1

		phi := rand.Float64() * 2 * math.Pi
		z := R * (2*rand.Float64() - 1)
		theta := math.Asin(z / R)

		points[i*3+0] = R * math.Cos(theta) * math.Cos(phi)
		points[i*3+1] = R * math.Cos(theta) * math.Sin(phi)
		points[i*3+2] = z

		const r = 0.8
		v := rand.Float64()*r + (1 - r)
		colors[i*3+0] = v
		colors[i*3+1] = v
		colors[i*3+2] = v
	}

	stars.Add(points, colors)

	render_stars := func() {
		glh.With(glh.Attrib{gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT}, func() {
			gl.Disable(gl.LIGHTING)
			gl.PointSize(1)
			gl.Color4f(1, 1, 1, 1)

			gl.Disable(gl.DEPTH_TEST)
			gl.DepthMask(false)

			stars.Render(gl.POINTS)
		})
	}

	render_scene := func() {

		// Update light position (sensitive to current modelview matrix)
		gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
		gl.Lightfv(gl.LIGHT2, gl.POSITION, light_position)

		if earth {
			Sphere(earth_radius, faces)
		}

		unlit_points := glh.Compound(glh.Disable(gl.LIGHTING), glh.Primitive{gl.POINTS})
		glh.With(unlit_points, func() {
			gl.Vertex3d(1, 0, 0)
		})

		for _, p := range planetoids {
			const dt = 0.1 // TODO: Frame update
			p.Render(dt)
		}

		glh.With(glh.Disable(gl.LIGHTING), func() {
			// Atmosphere
			gl.Color4f(0.25, 0.25, 1, 0.1)

			if atmosphere && earth {
				Sphere(earth_radius*1.025, 100)
			}

			gl.PointSize(10)

			glh.With(glh.Primitive{gl.POINTS}, func() {
				gl.Color4f(1.75, 0.75, 0.75, 1)
				gl.Vertex3d(-1.04, 0, 0)
			})
		})

	}

	render_shadow_volume := func() {

		glh.With(glh.Attrib{
			gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT |
				gl.POLYGON_BIT | gl.STENCIL_BUFFER_BIT,
		}, func() {

			gl.Disable(gl.LIGHTING)

			if shadowing {
				// gl.Disable(gl.DEPTH_TEST)
				gl.DepthMask(false)
				gl.DepthFunc(gl.LEQUAL)

				gl.Enable(gl.STENCIL_TEST)
				gl.ColorMask(false, false, false, false)
				gl.StencilFunc(gl.ALWAYS, 1, 0xffffffff)
			}

			shadow_volume := func() {
				const sv_length = 2
				const sv_granularity = 100
				const sv_radius = earth_radius * 1.001

				// Shadow cone
				glh.With(glh.Matrix{gl.MODELVIEW}, func() {
					gl.Rotatef(90, 1, 0, 0)
					gl.Rotatef(90, 0, -1, 0)
					gl.Color4f(0.5, 0.5, 0.5, 1)
					glu.Cylinder(quadric, sv_radius, sv_radius*1.05,
						sv_length, sv_granularity, 1)

					glu.Disk(quadric, 0, sv_radius, sv_granularity, 1)

					glh.With(glh.Matrix{gl.MODELVIEW}, func() {
						gl.Translated(0, 0, sv_length)
						glu.Disk(quadric, 0, sv_radius*1.05, sv_granularity, 1)
					})
				})

				for _, p := range planetoids {
					p.RenderShadowVolume()
				}

			}

			if cone {
				gl.FrontFace(gl.CCW)
				gl.StencilOp(gl.KEEP, gl.KEEP, gl.INCR)

				shadow_volume()

				gl.FrontFace(gl.CW)
				gl.StencilOp(gl.KEEP, gl.KEEP, gl.DECR)

				shadow_volume()
			}

			if shadowing {
				gl.StencilFunc(gl.NOTEQUAL, 0, 0xffffffff)
				gl.StencilOp(gl.KEEP, gl.KEEP, gl.KEEP)

				gl.ColorMask(true, true, true, true)
				// gl.Disable(gl.STENCIL_TEST)

				gl.Disable(gl.DEPTH_TEST)

				gl.FrontFace(gl.CCW)
				// gl.Color4f(1, 0, 0, 0.75)
				gl.Color4f(0, 0, 0, 0.75)
				// gl.Color4f(1, 1, 1, 0.75)

				gl.LoadIdentity()
				gl.Translated(0, 0, camera_z_offset)
				// TODO: Figure out why this doesn't draw over the whole screen
				glh.With(glh.Disable(gl.LIGHTING), func() {
					glh.DrawQuadd(-10, -10, 20, 20)
				})

				// gl.FrontFace(gl.CW)
				// gl.Enable(gl.LIGHTING)
				// gl.Disable(gl.LIGHT1)
				// render_scene()
				// gl.Enable(gl.LIGHT1)
			}
		})
	}
	_ = render_stars

	for running {
		running = glfw.WindowParam(glfw.Opened) == 1

		glfw.SwapBuffers()

		gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)

		rotation := func() {
			if tilt {
				gl.Rotated(20, 1, 0, 0)
			}

			if polar {
				gl.Rotated(90, 1, 0, 0)
			}

			gl.Rotated(d, 0, -1, 0)
		}

		// Star field

		glh.With(glh.Matrix{gl.PROJECTION}, func() {
			gl.LoadIdentity()
			glu.Perspective(starfield_fov, aspect, 0, 1)

			glh.With(glh.Matrix{gl.MODELVIEW}, func() {
				gl.LoadIdentity()
				rotation()
				render_stars()
			})
		})

		gl.MatrixMode(gl.MODELVIEW)
		gl.LoadIdentity()
		gl.Translated(0, 0, camera_z_offset)

		rotation()
		if rotating {
			d += 0.2
		}

		_ = render_scene
		render_scene()

		_ = render_shadow_volume
		render_shadow_volume()
	}
}
コード例 #13
0
ファイル: paint.go プロジェクト: pikkpoiss/ld27
func EndPaint() {
	gl.Flush()
	glfw.SwapBuffers()
}