/*************************************************************************									** CLASS: Polyhedron							** AUTHOR: Jean-Francois DOUE						** LAST MODIFICATION: 12 Oct 1993					**									** This class implements a 3D concave polyhedron.			** The polyhedron is defined by the following elements:			** + an array which contains the its vertices (vList).			** + an array of "facets" (iList). Each facet is itself defined as an	**   array of integer. The first one is the number of points composing	**   the facet. The other ones are the indices of these vertices in the	**   vList array.							** + an array of dimension 4 vectors, which stores the equations of the	**   planes on which the facets lie.					**									*************************************************************************/#ifndef Polyhedron_h#define Polyhedron_h 1#include "Primitive.h"class Polyhedron : public Primitive{protected: vec3	*vList;	    // vertices of the polyhedron vec4	*pList;	    // equations for the planes supporting the facets int	vertexN,    // number of vertices of the polyhedron	facetN,	    // number of facets of the polyhedron	**iList;    // lists of the vertex indices which define the facetspublic: // Constructors and destructors ~Polyhedron(); // virtual methods double intersect(vec3& ray_org, vec3& ray_dir); vec3 normalAt(vec3& p); // friends friend istream& operator >> (istream& s, Polyhedron& a);};#endif