From 9d85eb0769ade49a65d8c2d9643d3d67e5c31dcc Mon Sep 17 00:00:00 2001
From: Matt Turner <mattst88@gmail.com>
Date: Wed, 10 Oct 2012 18:16:37 -0700
Subject: Do matrix rotation

---
 src/main.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index 083427c..a341233 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -81,8 +81,8 @@ static void
 Redisplay(void)
 {
 	const float m[4] = {
-		1.0, 0.0,
-		0.0, 1.0
+		 cosf(angle_offset), sinf(angle_offset),
+		-sinf(angle_offset), cosf(angle_offset)
 	};
 
 
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