clarify Rect.Intersect doc

2017-07-05 19:58:09 +02:00 · 2017-07-05 19:58:09 +02:00 · da52aa25ec
parent 69d4a37e5e
commit da52aa25ec
1 changed files with 2 additions and 0 deletions
--- a/geometry.go
+++ b/geometry.go
@ -268,6 +268,8 @@ func (r Rect) Union(s Rect) Rect {
 }

 // Intersect returns the maximal Rect which is covered by both r and s. Rects r and s must be normalized.
+//
+// If r and s don't overlap, this function returns R(0, 0, 0, 0).
 func (r Rect) Intersect(s Rect) Rect {
 	t := R(
 		math.Min(r.Max.X, s.Max.X),