include/vrvCore/DtIntersectionCache.h

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/******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile:  $ $Revision:  $ $State:  $
******************************************************************************/


#pragma once
#include <vrvCore/vrvCore.h>
#include <matrix/vlVector.h>

namespace makVrv
{
   class DtIntersectorResult;

   class DT_DLL_VRVCORE DtIntersectionCache
   {
   public:
      virtual ~DtIntersectionCache();;

      virtual void setCacheFromIntersectionResult(const DtIntersectorResult& result ) = 0;

      virtual bool intersectWithCache( const DtVector& point, const DtVector& dir, 
         DtVector& hitPoint, DtVector& hitNormal ) = 0;

   protected:

      DtIntersectionCache();;
   };

   class DT_DLL_VRVCORE DtTriangleIntersectionCache : public DtIntersectionCache
   {
   public:
      DtTriangleIntersectionCache();

      virtual ~DtTriangleIntersectionCache();

      virtual void setCacheFromIntersectionResult(const DtIntersectorResult& result );

      virtual bool intersectWithCache( const DtVector& point, const DtVector& dir, 
         DtVector& hitPoint, DtVector& hitNormal ); 

   protected:
      bool intersectRayTriangle( const DtVector& point, const DtVector& dir, 
         DtVector& hitPoint );

   protected:
      bool myCacheSet;
      DtVector myVert0;
      DtVector myVert1;
      DtVector myVert2;
      DtVector myNormal;
   };

}