59 lines
1.1 KiB
Go
59 lines
1.1 KiB
Go
package main
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import (
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"fmt"
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"time"
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"log"
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"os"
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"io/ioutil"
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"bufio"
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"strings"
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"image"
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"image/png"
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"draw2d.googlecode.com/hg/draw2d"
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"draw2d.googlecode.com/hg/postscript"
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)
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func saveToPngFile(filePath string, m image.Image) {
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f, err := os.Open(filePath, os.O_CREAT|os.O_WRONLY, 0600)
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if err != nil {
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log.Println(err)
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os.Exit(1)
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}
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defer f.Close()
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b := bufio.NewWriter(f)
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err = png.Encode(b, m)
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if err != nil {
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log.Println(err)
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os.Exit(1)
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}
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err = b.Flush()
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if err != nil {
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log.Println(err)
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os.Exit(1)
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}
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fmt.Printf("Wrote %s OK.\n", filePath)
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}
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func main() {
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i := image.NewRGBA(600, 800)
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gc := draw2d.NewGraphicContext(i)
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gc.Translate(0, 380)
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gc.Scale(1, -1)
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gc.Translate(0, -380)
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lastTime := time.Nanoseconds()
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src, err := os.Open("../resource/postscript/tiger.ps", 0, 0)
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if err != nil {
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return
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}
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defer src.Close()
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bytes, err := ioutil.ReadAll(src)
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reader := strings.NewReader(string(bytes))
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interpreter := postscript.NewInterpreter(gc)
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interpreter.Execute(reader)
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dt := time.Nanoseconds() - lastTime
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fmt.Printf("Draw image: %f ms\n", float64(dt)*1e-6)
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saveToPngFile("../resource/result/TestPostscript.png", i)
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}
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