1.1 --- a/liberebus/src/geomobj.h	Sat May 24 02:27:08 2014 +0300
     1.2 +++ b/liberebus/src/geomobj.h	Sat May 24 06:12:57 2014 +0300
     1.3 @@ -16,11 +16,19 @@
     1.4  	ObjType get_type() const override;
     1.5  
     1.6  	bool intersect(const Ray &ray, RayHit *hit = 0) const override;
     1.7 +
     1.8 +	virtual Vector3 calc_normal(const RayHit &hit) const;
     1.9 +	virtual Vector3 calc_tangent(const RayHit &hit) const;
    1.10 +	virtual Vector2 calc_texcoords(const RayHit &hit) const;
    1.11  };
    1.12  
    1.13  class Sphere : public GeomObject {
    1.14  public:
    1.15  	bool intersect(const Ray &ray, RayHit *hit = 0) const override;
    1.16 +
    1.17 +	Vector3 calc_normal(const RayHit &hit) const override;
    1.18 +	Vector3 calc_tangent(const RayHit &hit) const override;
    1.19 +	Vector2 calc_texcoords(const RayHit &hit) const override;
    1.20  };
    1.21  
    1.22  class Box : public GeomObject {