From b18647916faf5feb9efd0a54facd2dbe8a4e9892 Mon Sep 17 00:00:00 2001
From: Tsukinai <dylan.blanchard@mymail.champlain.edu>
Date: Fri, 24 May 2019 12:00:11 -0600
Subject: [PATCH] Added ZR for zero rect

Added the ZR for rectangle for both utility and consistensy with pixel.ZV
---
 geometry.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/geometry.go b/geometry.go
index 42fe018..0c16b99 100644
--- a/geometry.go
+++ b/geometry.go
@@ -479,6 +479,9 @@ type Rect struct {
 	Min, Max Vec
 }
 
+// ZR is a zero rectangle.
+var ZR = Rect{Min:ZV, Max:ZV}
+
 // R returns a new Rect with given the Min and Max coordinates.
 //
 // Note that the returned rectangle is not automatically normalized.