itkSimplexMeshGeometry.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSimplexMeshGeometry.h,v $
  Language:  C++
  Date:      $Date: 2004/08/03 02:37:29 $
  Version:   $Revision: 1.5 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/

#ifndef __itkSimplexMeshGeometry_h
#define __itkSimplexMeshGeometry_h

#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif

#include "itkFixedArray.h"
#include "itkPoint.h"
#include "itkVector.h"
#include "itkCovariantVector.h"
#include <set>

namespace itk
  {

  class ITKCommon_EXPORT SimplexMeshGeometry
    {

    public:

      typedef itk::Point<double,3>                PointType;
      typedef itk::Vector<double,3>               VectorType;
      typedef itk::CovariantVector<double,3>      CovariantVectorType;
      typedef itk::FixedArray<unsigned long,3>    IndexArray;
      typedef itk::FixedArray<PointType,3>        PointArray;
      typedef std::set<unsigned long>             NeighborSetType;



      SimplexMeshGeometry();
      ~SimplexMeshGeometry();


      /* stores the indices of the three direct neighbors */
      IndexArray neighborIndices;

      /* stores the coordinates of the three direct neighbors */
      PointArray neighbors;

      /* stores the mean curvature of the mesh in the point */
      double meanCurvature;

      /* coordinates of the corresponding point */
      PointType pos;

      /* coordinates of the corresponding point in previous iteration */
      PointType oldPos;

      /* barycentric coordinates of corresponding point wiht respect 
      * to its three direct neighbors
      */
      PointType eps;

      /*
      * reference metric params
      */
      PointType referenceMetrics;

      /* normal vector of corresponding point */
      CovariantVectorType normal;

      /* stores external force component for 
      * current deformable model iteration
      */
      VectorType externalForce;

      /* stores internal force component for 
      * current deformable model iteration
      */
      VectorType internalForce;

      /*
      * store the location of the closest attractor to this point
      */
      PointType closestAttractor;

      /*
      * stores the index of the closest attractor to this point
      */
      unsigned long closestAttractorIndex;

      /* stores circum circle radius */
      double circleRadius;

      /* stores circum circle center */
      PointType circleCenter;

      /* stores circum sphere radius */
      double sphereRadius;

      /* stores circum sphere center */
      //  PointType sphereCenter;

      /* stores distance to foot point */
      double distance;

      /* stores angle */
      double phi;

      /* stores the neighbor set */
      NeighborSetType* neighborSet;

      /* stores multiplier for interactive deformable model filter */
      double multiplier;

      unsigned long forceIndex;

      void ComputeGeometry();


    protected:


    };// end of class __itkSimplexMeshGeometry

  } //end of namespace itk


#endif

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