From efd1efd2ca86d0c8a70b3aebc05a365442c8112f Mon Sep 17 00:00:00 2001
From: plouj <plouj@b8c14938-b733-429d-887c-d66ed1f8cd15>
Date: Sat, 16 Feb 2008 03:44:41 +0000
Subject: [PATCH] fixed a bug in  ray_triangle_intersect()

git-svn-id: http://svn.plouj.com/repos/eraytracer@65 b8c14938-b733-429d-887c-d66ed1f8cd15
---
 raytracer.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/raytracer.erl b/raytracer.erl
index 0c59f57..ac621be 100644
--- a/raytracer.erl
+++ b/raytracer.erl
@@ -446,7 +446,7 @@ ray_triangle_intersect(Ray, Triangle) ->
 					       Ray#ray.direction,
 					       Distance)),
 			    Normal = vector_normalize(
-				       vector_sub(
+				       vector_cross_product(
 					 Triangle#triangle.v1,
 					 Triangle#triangle.v2)),
 			    {Distance, Intersection, Normal}
-- 
2.11.4.GIT