fixed Lighting to ignore dot products less than 0 for diffuse coefficients; this broke shapes/Subtract again. fixed Material::white to be assigned to by Material() as evidently it was not calling the constructor properly otherwise. added initializer in Material::Material() to set ambient color to white. Scene constructing PointLight instead of a raw Light when loading from a file

git-svn-id: svn://anubis/fart/trunk@173 7f9b0f55-74a9-4bce-be96-3c2cd072584d

util/Material.cc

@@ -1,10 +1,11 @@
 
 #include "Material.h"
 
-const Material Material::white;
+const Material Material::white = Material();
 
 Material::Material()
 {
+    m_ambient_color = Color::white;
     m_diffuse_color = Color::white;
     m_specular_color = Color::white;
     m_shininess = 50.0;