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@adg @robpike
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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package pic // import "golang.org/x/tour/pic"
import (
"bytes"
"encoding/base64"
"fmt"
"image"
"image/png"
)
func Show(f func(int, int) [][]uint8) {
const (
dx = 256
dy = 256
)
data := f(dx, dy)
m := image.NewNRGBA(image.Rect(0, 0, dx, dy))
for y := 0; y < dy; y++ {
for x := 0; x < dx; x++ {
v := data[y][x]
i := y*m.Stride + x*4
m.Pix[i] = v
m.Pix[i+1] = v
m.Pix[i+2] = 255
m.Pix[i+3] = 255
}
}
ShowImage(m)
}
func ShowImage(m image.Image) {
var buf bytes.Buffer
err := png.Encode(&buf, m)
if err != nil {
panic(err)
}
enc := base64.StdEncoding.EncodeToString(buf.Bytes())
fmt.Println("IMAGE:" + enc)
}
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