Fix Rectangle.Canon()

R=rsc, r, gri CC=golang-dev https://golang.org/cl/1239043

Fix Rectangle.Canon()
R=rsc, r, gri CC=golang-dev https://golang.org/cl/1239043
79814069 · Roger Peppe · Robert Griesemer · efda3aba · 79814069
Commit 79814069 authored May 20, 2010 by Roger Peppe Committed by Robert Griesemer May 20, 2010
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src/pkg/exp/draw/arith.go src/pkg/exp/draw/arith.go +2 -2

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--- a/src/pkg/exp/draw/arith.go
+++ b/src/pkg/exp/draw/arith.go
@@ -59,10 +59,10 @@ func (r Rectangle) Sub(p Point) Rectangle { return Rectangle{r.Min.Sub(p), r.Max
 // has Min.X <= Max.X and Min.Y <= Max.Y.
 func (r Rectangle) Canon() Rectangle {
 	if r.Max.X < r.Min.X {
-		r.Max.X = r.Min.X
+		r.Min.X, r.Max.X = r.Max.X, r.Min.X
 	}
 	if r.Max.Y < r.Min.Y {
-		r.Max.Y = r.Min.Y
+		r.Min.Y, r.Max.Y = r.Max.Y, r.Min.Y
 	}
 	return r
 }