doc: added The Go image package article
Orignally published on The Go Programming Language, September 21, 2011.
http://blog.golang.org/2011/09/go-image-package.html
Update #2547
R=adg, nigeltao
CC=golang-dev
https://golang.org/cl/5933049
diff --git a/doc/progs/image_package6.go b/doc/progs/image_package6.go
new file mode 100644
index 0000000..62eeecd
--- /dev/null
+++ b/doc/progs/image_package6.go
@@ -0,0 +1,17 @@
+// Copyright 2012 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 main
+
+import (
+ "fmt"
+ "image"
+)
+
+func main() {
+ m0 := image.NewRGBA(image.Rect(0, 0, 8, 5))
+ m1 := m0.SubImage(image.Rect(1, 2, 5, 5)).(*image.RGBA)
+ fmt.Println(m0.Bounds().Dx(), m1.Bounds().Dx()) // prints 8, 4
+ fmt.Println(m0.Stride == m1.Stride) // prints true
+}