D:/VL/BuildSystem/VL_DISTRO/Visualization_Library_SDK/src/vlGraphics/DoubleVertexRemover.hpp

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#ifndef DoubleVertexRemover_INCLUDE_ONCE
#define DoubleVertexRemover_INCLUDE_ONCE

#include <vlGraphics/Geometry.hpp>
#include <vector>

namespace vl
{
  //-----------------------------------------------------------------------------
  // VertexMapper
  //-----------------------------------------------------------------------------
  class VLGRAPHICS_EXPORT VertexMapper: public Object
  {
  public:
    virtual const char* className() { return "vl::VertexMapper"; }
    ref<ArrayAbstract> regenerate(ArrayAbstract* data, const std::vector<size_t>& map_new_to_old) const;
  private:
    template<class T>
    ref<ArrayAbstract> regenerateT(ArrayAbstract* data, const std::vector<size_t>& map_new_to_old) const;
  };
  //-----------------------------------------------------------------------------
  // DoubleVertexRemover
  //-----------------------------------------------------------------------------
  class VLGRAPHICS_EXPORT DoubleVertexRemover: public VertexMapper
  {
  private:
    class CompareVertex
    {
    public:
      CompareVertex(const Geometry* geom)
      {
        if (geom->vertexArray())
          mAttribs.push_back(geom->vertexArray());
        if (geom->normalArray())
          mAttribs.push_back(geom->normalArray());
        if (geom->colorArray())
          mAttribs.push_back(geom->colorArray());
        if (geom->secondaryColorArray())
          mAttribs.push_back(geom->secondaryColorArray());
        if (geom->fogCoordArray())
          mAttribs.push_back(geom->fogCoordArray());
        for(int i=0; i<VL_MAX_TEXTURE_UNITS; ++i)
          if (geom->texCoordArray(i))
            mAttribs.push_back(geom->texCoordArray(i));
        for(int i=0; i<geom->vertexAttribArrays()->size(); ++i)
          mAttribs.push_back(geom->vertexAttribArrays()->at(i)->data());
      }

      bool operator()(unsigned int a, unsigned int b) const 
      { 
        // less(a,b); 
        for(unsigned i=0; i<mAttribs.size(); ++i)
        {
          int val = mAttribs[i]->compare(a,b);
          if (val != 0)
            return val < 0;
        }
        return false;
      }

      bool less(unsigned int a, unsigned int b) const
      {
        for(unsigned i=0; i<mAttribs.size(); ++i)
        {
          int val = mAttribs[i]->compare(a,b);
          if (val != 0)
            return val < 0;
        }
        return false;
      }

      bool equals(unsigned int a, unsigned int b) const
      {
        for(unsigned i=0; i<mAttribs.size(); ++i)
        {
          if (mAttribs[i]->compare(a,b) != 0)
            return false;
        }
        return true;
      }

    protected:
      std::vector< const ArrayAbstract* > mAttribs;
    };

  public:
    virtual const char* className() { return "vl::DoubleVertexRemover"; }
    DoubleVertexRemover() {}
    void removeDoubles(Geometry* geom);
    const std::vector<size_t>& mapNewToOld() const { return mMapNewToOld; }
    const std::vector<size_t>& mapOldToNew() const { return mMapOldToNew; }

  protected:
    std::vector<size_t> mMapNewToOld;
    std::vector<size_t> mMapOldToNew;
  };
}

#endif