From 7c1282df478a3b71d3f53561ef5a0de354fd6d1e Mon Sep 17 00:00:00 2001
From: Nicolas Silva <nical@fastmail.com>
Date: Thu, 7 Jun 2018 19:28:58 +0200
Subject: [PATCH] Implemt Rect::from_size and From<Size> for Rect.

---
 src/rect.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/rect.rs b/src/rect.rs
index 3fb6756..812816a 100644
--- a/src/rect.rs
+++ b/src/rect.rs
@@ -103,6 +103,19 @@ impl<T, U> TypedRect<T, U> {
     }
 }
 
+impl<T, U> TypedRect<T, U>
+where
+    T: Copy + Zero
+{
+    /// Creates a rect of the given size, at offset zero.
+    pub fn from_size(size: TypedSize2D<T, U>) -> Self {
+        TypedRect {
+            origin: TypedPoint2D::zero(),
+            size,
+        }
+    }
+}
+
 impl<T, U> TypedRect<T, U>
 where
     T: Copy + Clone + Zero + PartialOrd + PartialEq + Add<T, Output = T> + Sub<T, Output = T>,
@@ -550,6 +563,14 @@ impl<T: NumCast + Copy, Unit> TypedRect<T, Unit> {
     }
 }
 
+impl<T, U> From<TypedSize2D<T, U>> for TypedRect<T, U>
+where T: Copy + Zero
+{
+    fn from(size: TypedSize2D<T, U>) -> Self {
+        Self::from_size(size)
+    }
+}
+
 /// Shorthand for `TypedRect::new(TypedPoint2D::new(x, y), TypedSize2D::new(w, h))`.
 pub fn rect<T: Copy, U>(x: T, y: T, w: T, h: T) -> TypedRect<T, U> {
     TypedRect::new(TypedPoint2D::new(x, y), TypedSize2D::new(w, h))