From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Thu, 13 Aug 2015 06:43:15 +0000 (+0200)
Subject: fix normal in intersection ray/box intersection
X-Git-Url: https://git.localhorst.tv/?a=commitdiff_plain;h=4f93c2526b82132ee695949779775b5e7abc7d4d;p=blank.git

fix normal in intersection ray/box intersection

was transformed by M which apparently was wrong :)
---

diff --git a/src/model/geometry.cpp b/src/model/geometry.cpp
index c2816b4..e0b5582 100644
--- a/src/model/geometry.cpp
+++ b/src/model/geometry.cpp
@@ -47,20 +47,17 @@ bool Intersection(
 		*dist = t_min;
 	}
 	if (normal) {
-		glm::vec4 norm(0.0f);
 		if (min_all.x > min_all.y) {
 			if (min_all.x > min_all.z) {
-				norm.x = t2.x < t1.x ? 1 : -1;
+				normal->x = t2.x < t1.x ? 1 : -1;
 			} else {
-				norm.z = t2.z < t1.z ? 1 : -1;
+				normal->z = t2.z < t1.z ? 1 : -1;
 			}
 		} else if (min_all.y > min_all.z) {
-			norm.y = t2.y < t1.y ? 1 : -1;
+			normal->y = t2.y < t1.y ? 1 : -1;
 		} else {
-			norm.z = t2.z < t1.z ? 1 : -1;
+			normal->z = t2.z < t1.z ? 1 : -1;
 		}
-		norm = M * norm;
-		*normal = glm::vec3(norm);
 	}
 	return true;
 }