source: GTP/trunk/Lib/Vis/Preprocessing/src/IntelRayCaster.h @ 2582

#ifndef _IntelRayCaster_H__
#define _IntelRayCaster_H__

#include "RayCaster.h"
#include <vector>


namespace GtpVisibilityPreprocessor {


class Intersectable;
class VssRay;
class KdTree;
class Ray;
class SimpleRayContainer;
class AxisAlignedBox3;
class Vector3;
struct VssRayContainer;
class Preprocessor;
struct SimpleRay;


/** This class provides an interface for ray casting.
*/
class IntelRayCaster: public RayCaster
{
public:
        /** Default constructor initialising e.g., KD tree and BSP tree.
        */
        IntelRayCaster(const Preprocessor &preprocessor,
                                   const std::string externKdTree);

        virtual ~IntelRayCaster();

        int Type() const 
        { 
                return INTEL_RAYCASTER; 
        }

        // Using packet of 4 rays supposing that these are coherent
        // We give a box to which each ray is clipped to before the
        // ray shooting is computed !
  virtual void CastRaysPacket4(const Vector3 &minBox,
                                                           const Vector3 &maxBox,
                                                           const Vector3 origin4[],
                                                           const Vector3 direction4[],
                                                           int result4[],
                                                           float dist4[]);
  
        virtual int CastRay(const SimpleRay &simpleRay,
                                                VssRayContainer &vssRays,
                                                const AxisAlignedBox3 &box,
                                                const bool castDoubleRay,
                                                const bool pruneInvalidRays = true);

        virtual void CastRays16(
                                                        SimpleRayContainer &rays, 
                                                        VssRayContainer &vssRays,
                                                        const AxisAlignedBox3 &sbox,
                                                        const bool castDoubleRay,
                                                        const bool pruneInvalidRays = true);

        virtual void CastRays16(
                                                        SimpleRayContainer &rays, 
                                                        const int offset,
                                                        VssRayContainer &vssRays,
                                                        const AxisAlignedBox3 &sbox,
                                                        const bool castDoubleRay,
                                                        const bool pruneInvalidRays = true);

  
  void
  CastSimpleForwardRays(
                                                SimpleRayContainer &rays,
                                                const AxisAlignedBox3 &sbox
                                                );

    virtual void CastRays(
                                                  SimpleRayContainer &rays,
                                                  VssRayContainer &vssRays,
                                                  const AxisAlignedBox3 &sbox,
                                                  const bool castDoubleRay,
                                                  const bool pruneInvalidRays = true);

protected:

        bool InitRayCast(const std::string externKdTree);
};


}

#endif