From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 3 Apr 2021 10:09:39 +0000 (+0100)
Subject: geometry: Provide Rect::size()
X-Git-Tag: otter-0.5.0~272
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=15fe7e2885d2cb92a3dd3b143052f651ec5eace9;p=otter.git

geometry: Provide Rect::size()

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>
---

diff --git a/base/geometry.rs b/base/geometry.rs
index 6d424f06..44a31d7a 100644
--- a/base/geometry.rs
+++ b/base/geometry.rs
@@ -287,6 +287,13 @@ impl<T> RectC<T> where T: Mean + Debug + Copy {
   }
 }
 
+impl<T> RectC<T> where T: CheckedArith + Debug + Copy {
+  #[throws(CoordinateOverflow)]
+  pub fn size(&self) -> PosC<T> {
+    (self.br() - self.tl())?
+  }
+}
+
 #[test]
 fn empty_area() {
   let empty = Rect::empty();