diff options
Diffstat (limited to 'libgo/go/image/geom.go')
| -rw-r--r-- | libgo/go/image/geom.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libgo/go/image/geom.go b/libgo/go/image/geom.go index e1cd4dc1e3e..ed7dde2c84d 100644 --- a/libgo/go/image/geom.go +++ b/libgo/go/image/geom.go @@ -161,7 +161,11 @@ func (r Rectangle) Intersect(s Rectangle) Rectangle { if r.Max.Y > s.Max.Y { r.Max.Y = s.Max.Y } - if r.Min.X > r.Max.X || r.Min.Y > r.Max.Y { + // Letting r0 and s0 be the values of r and s at the time that the method + // is called, this next line is equivalent to: + // + // if max(r0.Min.X, s0.Min.X) >= min(r0.Max.X, s0.Max.X) || likewiseForY { etc } + if r.Empty() { return ZR } return r |