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_package4.go b/doc/progs/image_package4.go
new file mode 100644
index 0000000..c46fddf
--- /dev/null
+++ b/doc/progs/image_package4.go
@@ -0,0 +1,16 @@
+// 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() {
+ r := image.Rect(0, 0, 4, 3).Intersect(image.Rect(2, 2, 5, 5))
+ // Size returns a rectangle's width and height, as a Point.
+ fmt.Printf("%#v\n", r.Size()) // prints image.Point{X:2, Y:1}
+}
