/cygdrive/d/src/svn/vrut/trunk/core/src/geometry.h

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/*
 * $Id: geometry.h 650 2008-12-23 20:25:55Z misek $
 *
 * Description  : One line description of file.
 * Author       : Vaclav Kyba <mail/Jabber: vaseo1@gmail.com>  <ICQ: 98576293>
 *
 * Purpose      :
 *     Long description of what the file is for.
 */


#ifndef __GEOMETRY__H__
#define __GEOMETRY__H__

#include "moddefs.h"
#include "bvolumes.h"
#include <vector>


namespace VRUT
{
struct RayIntersectionInfo
{
  NODE_ID nodeID;
  float dist;
  VECTOR3 intersection;
  VECTOR3 normal;
  size_t geometryID;
  float u,v;
};


       class Geometry
       {
       protected:
              wxString name;
              AABB aabb;

       public:
              enum GEOMETRY_TYPE
              {
                     GEOMETRY_UNKNOWN,    
                     GEOMETRY_TRIANGLE    
              } type;

              Geometry(const wxString & _name) : name(CloneWxString(_name)), type(GEOMETRY_UNKNOWN)   {}
              Geometry(const Geometry & g) : name(CloneWxString(g.name)), type(g.type), aabb(g.aabb)   {}
              virtual ~Geometry() {}

              const wxString GetName() const
              {
                     return name;
              }
              const AABB & GetAABB() const
              {
                     return aabb;
              }
              virtual void BuildAABB() = 0;
              virtual bool Intersects(const Ray & ray, float * dist = (float *)NULL) const = 0;

         
         virtual bool CastRay(const Ray & ray, RayIntersectionInfo &info) const {
              // not pure virtual for now !
              return false;
         }

              virtual std::vector<Triangle> Triangulate() const = 0;

              virtual void AddBox(const vector3 &position, const vector3 &size) = 0;

              virtual wxString ToString() const
              {
                     return wxString::Format(wxT("Geometry type: %i\n"),     unsigned(type));
              }
              virtual Geometry * Clone() const = 0;

              friend class Scene;
       };
};

#endif

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