DtScalingAlgorithm.h

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/*****************************************************************************
 * Copyright (c) 2014 MAK Technologies, Inc.
 * All rights reserved.
 *****************************************************************************/

 
#pragma once
 
#include <vrvOsg/vrvOsg.h> 

#include <vrvCore/DtUniqueID.h>
#include <vrvUtil/DtVirtualBaseClass.h>

#include <osg/Referenced>
#include <osg/Node>
#include <osg/Camera>

namespace makVrv 
{ 
   class DtOsgCullVisitorParameters;

   class DT_DLL_VRVOSG DtScalingAlgorithm
   {
   public:
      virtual ~DtScalingAlgorithm();

      virtual double calculateScale( const DtOsgCullVisitorParameters& info,
         const osg::Camera& camera, const osg::Vec3d& position, 
         double modelRadius, DtUniqueID objectElementId ) = 0;
   };

   class DT_DLL_VRVOSG DtXRScalingAlgorithm : public DtScalingAlgorithm
   {
   public:
      virtual ~DtXRScalingAlgorithm();

      virtual double calculateScale( const DtOsgCullVisitorParameters& info,
         const osg::Camera& camera, const osg::Vec3d& position, 
         double modelRadius, DtUniqueID objectElementId );
   };
     
   class DT_DLL_VRVOSG DtScalingAlgorithmCreator : public DtVirtualBaseClass
   {
   public:
      DtScalingAlgorithmCreator();

      virtual ~DtScalingAlgorithmCreator();

      static DtScalingAlgorithmCreator& instance( DtDe& de );

      static void registerInstance( DtDe& de, 
         DtScalingAlgorithmCreator* instance );     

      virtual DtScalingAlgorithm* create();
   };
}