DtInstanceDofProcessor.h

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/*******************************************************************************
** Copyright (c) 2015 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <vrvOsg/DtInstanceProcessor.h>
#include <vrvOsg/DtInstanceState.h>

#include <tbb/cache_aligned_allocator.h>

namespace makVrv
{
   class DtInstanceManager;

   class DT_DLL_VRVOSG DtInstanceDofProcessor : public DtInstanceProcessor
   {
   public:
      DtInstanceDofProcessor(DtInstanceManager& instanceMgr);

      virtual ~DtInstanceDofProcessor();

      virtual void processRange(unsigned int instanceStride, unsigned int instanceOffset, unsigned int instanceCount);

   protected:

      struct DofUpdateStorage
      {
         osg::Quat quat;
         osg::Quat quatTemp;
         InstanceMatrix mat;
         std::vector<InstanceMatrix, 
            tbb::cache_aligned_allocator<InstanceMatrix> > matStack;
         std::vector<unsigned int, 
            tbb::cache_aligned_allocator<unsigned int> > childCountStack;
      };

      void updateDofRange(unsigned int instanceStride, unsigned int instanceOffset, unsigned int instanceCount);

      bool isRangeVisible(unsigned int offset, unsigned int count);

      void updateDofs(DofUpdateStorage& localStorage, InstanceMatrix& baseSpatial,
         unsigned int templateIx, const ArrayRange& dofRange, unsigned int drawableOffset);

   protected:
      DtInstanceManager& myInstanceManager;
   };
}