From c3e8914018f3ee262d5e3aef0be7f7d26728a412 Mon Sep 17 00:00:00 2001
From: havoc <havoc@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Tue, 10 Aug 2004 02:10:12 +0000
Subject: [PATCH] added identitymatrix const struct which can be used wherever

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4328 d7cf8633-e32d-0410-b094-e92efae38249
---
 matrixlib.c | 10 ++++++++++
 matrixlib.h |  2 ++
 2 files changed, 12 insertions(+)

diff --git a/matrixlib.c b/matrixlib.c
index a036d822..550a5118 100644
--- a/matrixlib.c
+++ b/matrixlib.c
@@ -2,6 +2,16 @@
 #include <math.h>
 #include "matrixlib.h"
 
+const matrix4x4_t identitymatrix =
+{
+	{
+		{1, 0, 0, 0},
+		{0, 1, 0, 0},
+		{0, 0, 1, 0},
+		{0, 0, 0, 1}
+	}
+};
+
 void Matrix4x4_Copy (matrix4x4_t *out, const matrix4x4_t *in)
 {
 	*out = *in;
diff --git a/matrixlib.h b/matrixlib.h
index 87b09f84..06890e29 100644
--- a/matrixlib.h
+++ b/matrixlib.h
@@ -12,6 +12,8 @@ typedef struct matrix4x4_s
 }
 matrix4x4_t;
 
+extern const matrix4x4_t identitymatrix;
+
 // functions for manipulating 4x4 matrices
 
 // copy a matrix4x4
-- 
2.39.2