draw2d/cmd/testgopher.go

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package main
import (
"fmt"
"log"
"os"
"bufio"
"time"
"math"
"image"
"image/png"
"draw2d.googlecode.com/hg/draw2d"
)
const (
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width, height = 300, 200
)
var (
lastTime int64
folder = "../resource/result/"
)
func initGc(w, h int) (image.Image, *draw2d.GraphicContext) {
i := image.NewRGBA(w, h)
gc := draw2d.NewGraphicContext(i)
lastTime = time.Nanoseconds()
gc.SetStrokeColor(image.Black)
gc.SetFillColor(image.White)
// fill the background
//gc.Clear()
return i, gc
}
func saveToPngFile(TestName string, m image.Image) {
dt := time.Nanoseconds() - lastTime
fmt.Printf("%s during: %f ms\n", TestName, float64(dt)*10e-6)
filePath := folder + TestName + ".png"
f, err := os.Open(filePath, os.O_CREAT|os.O_WRONLY, 0600)
if err != nil {
log.Println(err)
os.Exit(1)
}
defer f.Close()
b := bufio.NewWriter(f)
err = png.Encode(b, m)
if err != nil {
log.Println(err)
os.Exit(1)
}
err = b.Flush()
if err != nil {
log.Println(err)
os.Exit(1)
}
fmt.Printf("Wrote %s OK.\n", filePath)
}
func gordon(gc *draw2d.GraphicContext, x, y, w, h float64) {
h23 := (h * 2) / 3
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blf := image.RGBAColor{0, 0, 0, 0xff}
wf := image.RGBAColor{0xff, 0xff, 0xff, 0xff}
nf := image.RGBAColor{0x8B, 0x45, 0x13, 0xff}
brf := image.RGBAColor{0x8B, 0x45, 0x13, 0x99}
brb := image.RGBAColor{0x8B, 0x45, 0x13, 0xBB}
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gc.MoveTo(x, y+h)
gc.CubicCurveTo(x, y+h, x+w/2, y-h, x+w, y+h)
gc.Close()
gc.SetFillColor(brb)
gc.Fill()
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draw2d.RoundRect(gc, x, y+h, x+w, y+h+h, 10, 10)
gc.Fill()
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draw2d.Circle(gc, x, y+h, w/12) // left ear
gc.SetFillColor(brf)
gc.Fill()
draw2d.Circle(gc, x, y+h, w/12-10)
gc.SetFillColor(nf)
gc.Fill()
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draw2d.Circle(gc, x+w, y+h, w/12) // right ear
gc.SetFillColor(brf)
gc.Fill()
draw2d.Circle(gc, x+w, y+h, w/12-10)
gc.SetFillColor(nf)
gc.Fill()
draw2d.Circle(gc, x+w/3, y+h23, w/9) // left eye
gc.SetFillColor(wf)
gc.Fill()
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draw2d.Circle(gc, x+w/3+10, y+h23, w/10-10)
gc.SetFillColor(blf)
gc.Fill()
draw2d.Circle(gc, x+w/3+15, y+h23, 5)
gc.SetFillColor(wf)
gc.Fill()
draw2d.Circle(gc, x+w-w/3, y+h23, w/9) // right eye
gc.Fill()
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draw2d.Circle(gc, x+w-w/3+10, y+h23, w/10-10)
gc.SetFillColor(blf)
gc.Fill()
draw2d.Circle(gc, x+w-(w/3)+15, y+h23, 5)
gc.SetFillColor(wf)
gc.Fill()
gc.SetFillColor(wf)
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draw2d.RoundRect(gc, x+w/2-w/8, y+h+30, x+w/2-w/8+w/8, y+h+30+w/6, 5, 5) // left tooth
gc.Fill()
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draw2d.RoundRect(gc, x+w/2, y+h+30, x+w/2+w/8, y+h+30+w/6, 5, 5) // right tooth
gc.Fill()
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draw2d.Ellipse(gc, x+(w/2), y+h+30, w/6, w/12) // snout
gc.SetFillColor(nf)
gc.Fill()
draw2d.Ellipse(gc, x+(w/2), y+h+10, w/10, w/12) // nose
gc.SetFillColor(blf)
gc.Fill()
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}
func main() {
i, gc := initGc(width, height)
gc.Clear()
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gc.Translate(-75, 58)
gc.Rotate(-30 * (math.Pi / 180.0))
gordon(gc, 48, 48, 240, 72)
saveToPngFile("TestGopher", i)
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}