DtSharedDrawElementsUInt.h

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/******************************************************************************
** Copyright (c) 2020 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>
#include <osg/PrimitiveSet>

namespace makVrv
{
   
   class DT_DLL_VRVOSG DtSharedDrawElementsUInt : public osg::PrimitiveSet
   {
   public:
      DtSharedDrawElementsUInt(GLenum mode, osg::DrawElementsUInt* indices);
      DtSharedDrawElementsUInt(const DtSharedDrawElementsUInt& copy, 
         const osg::CopyOp& copyop);

   public:

      virtual void setIndexBounds(unsigned int start, unsigned int count);
      virtual void getIndexBounds(unsigned int& start, unsigned int& count) const;

      //{ 
      virtual osg::Object* cloneType() const override {
         return new DtSharedDrawElementsUInt(*this,osg::CopyOp()); }
      virtual osg::Object* clone(const osg::CopyOp& copyop) const override {
         return new DtSharedDrawElementsUInt(*this,copyop); }        
      virtual bool isSameKindAs(const osg::Object* obj) const override {
         return dynamic_cast<const DtSharedDrawElementsUInt*>(obj)!=NULL; }
      virtual const char* libraryName() const override { return "vrvOsg"; }
      virtual const char* className() const override { return "DtSharedDrawElementsUInt"; }
      virtual const GLvoid* getDataPointer() const override;
      virtual unsigned int getTotalDataSize() const override;
      virtual bool supportsBufferObject() const override;
      virtual osg::DrawElements* getDrawElements() override;
      virtual const osg::DrawElements* getDrawElements() const override;
      virtual void accept(osg::PrimitiveFunctor& functor) const override;
      virtual void accept(osg::PrimitiveIndexFunctor& functor) const override;
      virtual unsigned int index(unsigned int pos) const override;
      virtual unsigned int getNumIndices() const override;
      virtual void offsetIndices(int offset) override;
      virtual unsigned int getNumPrimitives() const override;
      virtual void resizeGLObjectBuffers(unsigned int maxSize) override;
      virtual void releaseGLObjects(osg::State* state=0) const override;
      virtual void computeRange() const override;
      virtual void draw(osg::State& state, bool useVertexBufferObjects) const override;
      //}

   protected:

      osg::ref_ptr<osg::DrawElementsUInt> myIndices;
      unsigned int myStartIndex;
      unsigned int myCount;
   };
}