added Shape::~Shape() to work around compiler warnings

git-svn-id: svn://anubis/fart/trunk@101 7f9b0f55-74a9-4bce-be96-3c2cd072584d

shapes/Shape.cc

@@ -6,3 +6,7 @@ Shape::Shape()
     m_transparency = 0.0;
     m_material = new Material(Material::white);
 }
+
+Shape::~Shape()
+{
+}

shapes/Shape.h

@@ -16,6 +16,7 @@ class Shape
         typedef std::vector<Vector> IntersectList;
 
         Shape();
+        virtual ~Shape();
         virtual IntersectList intersect(const Ray & ray) = 0;
         virtual Vector getNormalAt(const Vector & pt) = 0;