QuadMC.h

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/*
   For more information, please see: http://software.sci.utah.edu

   The MIT License

   Copyright (c) 2009 Scientific Computing and Imaging Institute,
   University of Utah.

   
   Permission is hereby granted, free of charge, to any person obtaining a
   copy of this software and associated documentation files (the "Software"),
   to deal in the Software without restriction, including without limitation
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   Software is furnished to do so, subject to the following conditions:

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   in all copies or substantial portions of the Software.

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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#ifndef CORE_ALGORITHMS_VISUALIZATION_QUADMC_H
#define CORE_ALGORITHMS_VISUALIZATION_QUADMC_H 1

#include <Core/Datatypes/Field.h>
#include <Core/Datatypes/Matrix.h>

#include <Core/Geom/GeomLine.h>

#include <Core/Algorithms/Fields/MarchingCubes/BaseMC.h>

namespace SCIRun {

class QuadMC : public BaseMC
{
  public:
    QuadMC( Field *field ) : field_handle_(field), 
                             field_(field->vfield()),
                             mesh_(field->vmesh()),
                             lines_(0), 
                             curve_handle_(0),
                             curve_(0) {} 
    virtual ~QuadMC() {}

    void extract( VMesh::Elem::index_type, double );
    virtual void reset( int, bool build_field, bool build_geom, bool transparency);
    virtual FieldHandle get_field(double val);

  private:
    void extract_n( VMesh::Elem::index_type, double );
    void extract_f( VMesh::Elem::index_type, double );

    VMesh::Node::index_type find_or_add_edgepoint(index_type n0,
                                                  index_type n1,
                                                  double d0,
                                                  const Point &p);
    VMesh::Node::index_type find_or_add_nodepoint(VMesh::Node::index_type &idx);

    void find_or_add_parent(index_type u0, index_type u1,
                            double d0, index_type edge);


    FieldHandle field_handle_;
    VField*     field_;
    VMesh*      mesh_;
    
    GeomLines *lines_;
    
    FieldHandle curve_handle_;
    VMesh*      curve_;
};
  

} // End namespace SCIRun

#endif