From ca3087eac54c642f71354a3948ee8208292b1167 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Wed, 28 Jan 2009 15:06:48 +0000
Subject: [PATCH] shapes returning transformed normals

git-svn-id: svn://anubis/fart/trunk@60 7f9b0f55-74a9-4bce-be96-3c2cd072584d
---
 shapes/Plane.cc  | 3 ++-
 shapes/Sphere.cc | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/shapes/Plane.cc b/shapes/Plane.cc
index a3c3468..513e7f4 100644
--- a/shapes/Plane.cc
+++ b/shapes/Plane.cc
@@ -46,5 +46,6 @@ Shape::IntersectList Plane::intersect(const Ray & ray)
 Vector Plane::getNormalAt(const Vector & pt)
 {
     Vector normal(m_a, m_b, m_c);
-    return normal.normalize();
+    normal.normalize();
+    return m_transform.transform_normal(normal);
 }
diff --git a/shapes/Sphere.cc b/shapes/Sphere.cc
index f0f383e..045a681 100644
--- a/shapes/Sphere.cc
+++ b/shapes/Sphere.cc
@@ -41,5 +41,7 @@ Vector Sphere::getNormalAt(const Vector & pt)
     Vector pt_inv = m_inverse.transform_point(pt);
 
     Vector normal = pt_inv;
-    return normal.normalize();
+    normal.normalize();
+
+    return m_transform.transform_normal(normal);
 }