1package captcha
 2
 3import (
 4	"image"
 5	"image/png"
 6	"io"
 7	"os"
 8	"rand"
 9)
10
11
12func NewImage(numbers []byte) *image.NRGBA {
13	w := numberWidth * (dotSize + 3) * len(numbers)
14	h := numberHeight * (dotSize + 5)
15	img := image.NewNRGBA(w, h)
16	color := image.NRGBAColor{uint8(rand.Intn(50)), uint8(rand.Intn(50)), uint8(rand.Intn(128)), 0xFF}
17	fillWithCircles(img, color, 40, 4)
18	x := rand.Intn(dotSize)
19	y := 0
20	setRandomBrightness(&color, 180)
21	for _, n := range numbers {
22		y = rand.Intn(dotSize * 4)
23		drawNumber(img, font[n], x, y, color)
24		x += dotSize*numberWidth + rand.Intn(maxSkew) + 8
25	}
26	drawCirclesLine(img, color)
27	return img
28}
29
30func EncodeNewImage(w io.Writer) (numbers []byte, err os.Error) {
31	numbers = randomNumbers()
32	err = png.Encode(w, NewImage(numbers))
33	return
34}
35