From cdc651cf66377eed22198df3c9cd12675a3949eb Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Mon, 24 Oct 2011 10:26:17 +1100
Subject: [PATCH] Reduce temporaries in matrix unproject

---
 matrix.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/matrix.cpp b/matrix.cpp
index 9e7bec62..05fbee2c 100644
--- a/matrix.cpp
+++ b/matrix.cpp
@@ -115,9 +115,7 @@ matrix::to_local (const util::point &p) const {
 
 util::point
 matrix::to_global (const util::point &p) const {
-    matrix m = *this;
-    m.invert ();
-    return m.to_local (p);
+    return inverse ().to_local (p);
 }