Example #1
0
func DrawTiger(gc draw2d.GraphicContext) {
	if postscriptContent == "" {
		src, err := os.OpenFile("../../resource/postscript/tiger.ps", 0, 0)
		if err != nil {
			fmt.Println("can't find postscript file.")
			return
		}
		defer src.Close()
		bytes, err := ioutil.ReadAll(src)
		postscriptContent = string(bytes)
	}
	interpreter := postscript.NewInterpreter(gc)
	reader := strings.NewReader(postscriptContent)
	interpreter.Execute(reader)
}
Example #2
0
func main() {
	i := image.NewRGBA(image.Rect(0, 0, 600, 800))
	gc := draw2d.NewGraphicContext(i)
	gc.Translate(0, 380)
	gc.Scale(1, -1)
	gc.Translate(0, -380)
	src, err := os.OpenFile("../resource/postscript/tiger.ps", 0, 0)
	if err != nil {
		return
	}
	defer src.Close()
	bytes, err := ioutil.ReadAll(src)
	reader := strings.NewReader(string(bytes))
	interpreter := postscript.NewInterpreter(gc)
	interpreter.Execute(reader)
	saveToPngFile("../resource/result/TestPostscript.png", i)
}
Example #3
0
func display() {
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
	gl.LineWidth(1)
	gc := draw2dgl.NewGraphicContext(width, height)

	gc.Translate(380, 400)
	gc.Scale(1, -1)
	rotate = (rotate + 1) % 360
	gc.Rotate(float64(rotate) * math.Pi / 180)
	gc.Translate(-380, -400)
	interpreter := postscript.NewInterpreter(gc)
	reader := strings.NewReader(postscriptContent)
	lastTime := time.Now()
	interpreter.Execute(reader)
	dt := time.Now().Sub(lastTime)
	log.Printf("Redraw in : %f ms\n", float64(dt)*1e-6)
	gl.Flush() /* Single buffered, so needs a flush. */
	glut.PostRedisplay()
}