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/* Copyright (c) 2008, 2009 The University of Notre Dame. All Rights Reserved. | 
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/* Copyright (c) 2008, 2009, 2010 The University of Notre Dame. All Rights Reserved. | 
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 * | 
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 * The University of Notre Dame grants you ("Licensee") a | 
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 * non-exclusive, royalty free, license to use, modify and | 
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 * redistribute this software in source and binary code form, provided | 
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 * that the following conditions are met: | 
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 * | 
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 * 1. Acknowledgement of the program authors must be made in any | 
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 *    publication of scientific results based in part on use of the | 
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 *    program.  An acceptable form of acknowledgement is citation of | 
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 *    the article in which the program was described (Matthew | 
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 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher | 
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 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented | 
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 *    Parallel Simulation Engine for Molecular Dynamics," | 
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 *    J. Comput. Chem. 26, pp. 252-271 (2005)) | 
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 * | 
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 * 2. Redistributions of source code must retain the above copyright | 
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 * 1. Redistributions of source code must retain the above copyright | 
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 *    notice, this list of conditions and the following disclaimer. | 
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 * | 
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 * 3. Redistributions in binary form must reproduce the above copyright | 
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 * 2. Redistributions in binary form must reproduce the above copyright | 
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 *    notice, this list of conditions and the following disclaimer in the | 
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 *    documentation and/or other materials provided with the | 
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 *    distribution. | 
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 * University of Notre Dame has been advised of the possibility of | 
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 * such damages. | 
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 * | 
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 * SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your | 
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 * research, please cite the appropriate papers when you publish your | 
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 * work.  Good starting points are: | 
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 *                                                                       | 
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 * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).              | 
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 * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).           | 
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 * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).           | 
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 * [4]  Vardeman & Gezelter, in progress (2009).                         | 
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 * | 
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 * | 
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 *  ConvexHull.cpp | 
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 *  Purpose: To calculate convexhull, hull volume libqhull. | 
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 * | 
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 *  Created by Charles F. Vardeman II on 11 Dec 2006. | 
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 *  @author  Charles F. Vardeman II | 
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 *  @version $Id: ConvexHull.cpp,v 1.20 2009-10-22 19:43:10 gezelter Exp $ | 
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 *  @version $Id: ConvexHull.cpp,v 1.21 2009-11-25 20:02:01 gezelter Exp $ | 
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 * | 
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 */ | 
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#include <mpi.h> | 
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#endif | 
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using namespace oopse; | 
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using namespace OpenMD; | 
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#ifdef HAVE_QHULL | 
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extern "C" | 
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  facetT *facet; | 
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  setT *vertices; | 
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  int curlong, totlong; | 
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  pointT *intPoint; | 
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  std::vector<double> ptArray(numpoints*dim_); | 
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  } //qh_new_qhull | 
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#endif | 
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  intPoint = qh interior_point; | 
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  RealType calcvol = 0.0; | 
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  FORALLfacets {   | 
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    Triangle face; | 
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    //Qhull sets the unit normal in facet->normal | 
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    Vector3d V3dNormal(facet->normal[0], facet->normal[1], facet->normal[2]); | 
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    face.setNormal(V3dNormal); | 
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    face.setUnitNormal(V3dNormal); | 
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    RealType faceArea = qh_facetarea(facet); | 
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    face.setArea(faceArea); | 
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    face.addVertices(p[0], p[1], p[2]); | 
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    face.setFacetMass(faceMass); | 
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    face.setFacetVelocity(faceVel/3.0); | 
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    /* | 
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    RealType comparea = face.computeArea(); | 
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    realT calcarea = qh_facetarea (facet); | 
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    Vector3d V3dCompNorm = -face.computeUnitNormal(); | 
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    RealType thisOffset = ((0.0-p[0][0])*V3dCompNorm[0] + (0.0-p[0][1])*V3dCompNorm[1] + (0.0-p[0][2])*V3dCompNorm[2]); | 
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    RealType dist = facet->offset + intPoint[0]*V3dNormal[0] + intPoint[1]*V3dNormal[1] + intPoint[2]*V3dNormal[2]; | 
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    std::cout << "facet offset and computed offset: " << facet->offset << "  " << thisOffset <<  std::endl; | 
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    calcvol +=  -dist*comparea/qh hull_dim; | 
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    */ | 
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    Triangles_.push_back(face); | 
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    qh_settempfree(&vertices);       | 
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  qh_getarea(qh facet_list); | 
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  volume_ = qh totvol; | 
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  area_ = qh totarea; | 
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  //  std::cout << "My volume is: " << calcvol << " qhull volume is:" << volume_ << std::endl;  | 
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  qh_freeqhull(!qh_ALL); | 
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  qh_memfreeshort(&curlong, &totlong); | 
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  if (curlong || totlong) |