47  */

    47  */

    48 class Shape

    48 class Shape

    49 {

    49 {

    50 public:

    50 public:

    51 	Material *material;

    51 	Material *material;

    52 	Shape() {};

    53 	Shape() {};

    53 	virtual ~Shape() {};

    54 	virtual ~Shape() {};

    54 

    55 

    55 	// first intersection point

    56 	// first intersection point

    56 	virtual bool intersect(const Ray &ray, Float &dist) const = 0;

    57 	virtual bool intersect(const Ray &ray, Float &dist) const = 0;

   174 /**

   175 /**

   175  * triangle shape

   176  * triangle shape

   176  */

   177  */

   177 class Triangle: public Shape

   178 class Triangle: public Shape

   178 {

   179 {

   179 #ifdef TRI_BARI_PRE

   181 #ifdef TRI_BARI_PRE

   180 	Float nu, nv, nd;

   182 	Float nu, nv, nd;

   182 	Float bnu, bnv;

   183 	Float bnu, bnv;

   183 	Float cnu, cnv;

   184 	Float cnu, cnv;

   184 #endif

   186 #endif

   185 #ifdef TRI_BARI

   187 #ifdef TRI_BARI

   186 	int k; // dominant axis

   188 	int k; // dominant axis

   187 #endif

   189 #endif

   188 #ifdef TRI_PLUCKER

   190 #ifdef TRI_PLUCKER

   189 	Float pla[6], plb[6], plc[6];

   191 	Float pla[6], plb[6], plc[6];

   190 #endif

   192 #endif

   192 	const Vector smooth_normal(const Vector &P) const

   194 	const Vector smooth_normal(const Vector &P) const

   193 	{

   195 	{

   194 #ifdef TRI_BARI_PRE

   196 #ifdef TRI_BARI_PRE

   195 		const Vector &NA = static_cast<NormalVertex*>(A)->N;

   197 		const Vector &NA = static_cast<NormalVertex*>(A)->N;

   196 		const Vector &NB = static_cast<NormalVertex*>(B)->N;

   198 		const Vector &NB = static_cast<NormalVertex*>(B)->N;

   207 		return n;

   209 		return n;

   208 #else

   210 #else

   209 		return N; // not implemented for other algorithms

   211 		return N; // not implemented for other algorithms

   210 #endif

   212 #endif

   211 	};

   213 	};

   212 public:

   215 public:

   213 	Vertex *A, *B, *C;

   216 	Vertex *A, *B, *C;

   214 

   217 

   215 	Triangle() {};

   218 	Triangle() {};

   216 	Triangle(Vertex *aA, Vertex *aB, Vertex *aC, Material *amaterial);

   219 	Triangle(Vertex *aA, Vertex *aB, Vertex *aC, Material *amaterial);