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root/OpenMD/trunk/src/math/ConvexHull.cpp

Comparing trunk/src/math/ConvexHull.cpp (file contents):
Revision 1365 by chuckv, Mon Oct 12 20:11:29 2009 UTC vs.
Revision 1619 by gezelter, Mon Sep 12 18:18:38 2011 UTC

#	Line 1 | Line 1
1	<	/* Copyright (c) 2008, 2009 The University of Notre Dame. All Rights Reserved.
1	>	/* Copyright (c) 2010 The University of Notre Dame. All Rights Reserved.
2		*
3		* The University of Notre Dame grants you ("Licensee") a
4		* non-exclusive, royalty free, license to use, modify and
5		* redistribute this software in source and binary code form, provided
6		* that the following conditions are met:
7		*
8	<	* 1. Acknowledgement of the program authors must be made in any
9	<	*    publication of scientific results based in part on use of the
10	<	*    program.  An acceptable form of acknowledgement is citation of
11	<	*    the article in which the program was described (Matthew
12	<	*    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
13	<	*    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
14	<	*    Parallel Simulation Engine for Molecular Dynamics,"
15	<	*    J. Comput. Chem. 26, pp. 252-271 (2005))
16	<	*
17	<	* 2. Redistributions of source code must retain the above copyright
8	>	* 1. Redistributions of source code must retain the above copyright
9		*    notice, this list of conditions and the following disclaimer.
10		*
11	<	* 3. Redistributions in binary form must reproduce the above copyright
11	>	* 2. Redistributions in binary form must reproduce the above copyright
12		*    notice, this list of conditions and the following disclaimer in the
13		*    documentation and/or other materials provided with the
14		*    distribution.
#	Line 37 | Line 28
28		* University of Notre Dame has been advised of the possibility of
29		* such damages.
30		*
31	+	* SUPPORT OPEN SCIENCE!  If you use OpenMD or its source code in your
32	+	* research, please cite the appropriate papers when you publish your
33	+	* work.  Good starting points are:
34	+	*
35	+	* [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).
36	+	* [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).
37	+	* [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).
38	+	* [4]  Vardeman & Gezelter, in progress (2009).
39		*
40	+	*
41		*  ConvexHull.cpp
42		*
43		*  Purpose: To calculate convexhull, hull volume libqhull.
44		*
45		*  Created by Charles F. Vardeman II on 11 Dec 2006.
46		*  @author  Charles F. Vardeman II
47	<	*  @version $Id: ConvexHull.cpp,v 1.14 2009-10-12 20:11:29 chuckv Exp $
47	>	*  @version $Id$
48		*
49		*/
50
51		/* Standard includes independent of library */
52	+
53		#include <iostream>
54		#include <fstream>
55		#include <list>
#	Line 57 | Line 58
58		#include "math/ConvexHull.hpp"
59		#include "utils/simError.h"
60
60	–
61	–	using namespace oopse;
62	–
63	–	/* CGAL version of convex hull first then QHULL */
64	–	#ifdef HAVE_CGAL
65	–	//#include <CGAL/Homogeneous.h>
66	–	#include <CGAL/basic.h>
67	–	//#include <CGAL/Simple_cartesian.h>
68	–	#include <CGAL/Cartesian.h>
69	–	#include <CGAL/Origin.h>
70	–	#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
71	–	#include <CGAL/Convex_hull_traits_3.h>
72	–	#include <CGAL/convex_hull_3.h>
73	–	#include <CGAL/Polyhedron_traits_with_normals_3.h>
74	–	#include <CGAL/Polyhedron_3.h>
75	–	#include <CGAL/double.h>
76	–	#include <CGAL/number_utils.h>
77	–
78	–
79	–	//#include <CGAL/Quotient.h>
80	–	#include <CGAL/MP_Float.h>
81	–	//#include <CGAL/Lazy_exact_nt.h>
82	–
83	–
84	–
85	–	typedef CGAL::MP_Float RT;
86	–	//typedef double RT;
87	–	//typedef CGAL::Homogeneous<RT>                     K;
88	–	typedef CGAL::Exact_predicates_exact_constructions_kernel K;
89	–	typedef K::Vector_3                               Vector_3;
90	–	//typedef CGAL::Convex_hull_traits_3<K>             Traits;
91	–	typedef CGAL::Polyhedron_traits_with_normals_3<K> Traits;
92	–	//typedef Traits::Polyhedron_3                      Polyhedron_3;
93	–	typedef CGAL::Polyhedron_3<Traits>                     Polyhedron_3;
94	–	typedef K::Point_3                                Point_3;
95	–
96	–
97	–	typedef Polyhedron_3::HalfedgeDS             HalfedgeDS;
98	–	typedef Polyhedron_3::Facet_iterator                   Facet_iterator;
99	–	typedef Polyhedron_3::Halfedge_around_facet_circulator Halfedge_facet_circulator;
100	–	typedef Polyhedron_3::Halfedge_handle Halfedge_handle;
101	–	typedef Polyhedron_3::Facet_iterator Facet_iterator;
102	–	typedef Polyhedron_3::Plane_iterator Plane_iterator;
103	–	typedef Polyhedron_3::Vertex_iterator Vertex_iterator;
104	–	typedef Polyhedron_3::Vertex_handle Vertex_handle;
105	–	typedef Polyhedron_3::Point_iterator Point_iterator;
106	–
107	–
108	–
109	–	class Enriched_Point_3 : public K::Point_3{
110	–	public:
111	–	Enriched_Point_3(double x,double y,double z) : K::Point_3(x,y,z), yupMyPoint(false), mySD(NULL) {}
112	–
113	–	bool isMyPoint() const{ return yupMyPoint; }
114	–	void myPoint(){ yupMyPoint = true; }
115	–	void setSD(StuntDouble* SD){mySD = SD;}
116	–	StuntDouble* getStuntDouble(){return mySD;}
117	–	private:
118	–	bool yupMyPoint;
119	–	StuntDouble* mySD;
120	–
121	–	};
122	–
123	–
124	–
125	–
126	–
127	–	// compare Point_3's... used in setting up the STL map from points to indices
128	–	template <typename Pt3>
129	–	struct Point_3_comp {
130	–	bool operator() (const Pt3 & p, const Pt3 & q) const {
131	–	return CGAL::lexicographically_xyz_smaller(p,q); // this is defined inline & hence we had to create fn object & not ptrfun
132	–	}
133	–	};
134	–
135	–	// coordinate-based hashing inefficient but can we do better if pts are copied?
136	–	typedef std::map<Point_3, StuntDouble* ,Point_3_comp<Point_3> > ptMapType;
137	–
61		#ifdef IS_MPI
62	<	struct {
140	<	double x,y,z;
141	<	} surfacePt;
62	>	#include <mpi.h>
63		#endif
64
65	<	ConvexHull::ConvexHull() : Hull(){
145	<	//If we are doing the mpi version, set up some vectors for data communication
146	<	#ifdef IS_MPI
65	>	using namespace OpenMD;
66
67	+	#ifdef HAVE_QHULL
68	+	extern "C"
69	+	{
70	+	#include <qhull/libqhull.h>
71	+	#include <qhull/mem.h>
72	+	#include <qhull/qset.h>
73	+	#include <qhull/geom.h>
74	+	#include <qhull/merge.h>
75	+	#include <qhull/poly.h>
76	+	#include <qhull/io.h>
77	+	#include <qhull/stat.h>
78	+	}
79
80	<	nproc_ = MPI::COMM_WORLD.Get_size();
150	<	myrank_ = MPI::COMM_WORLD.Get_rank();
151	<	NstoProc_ = new int[nproc_];
152	<	vecdispls_   = new int[nproc_];
153	<	displs_ = new int[nproc_];
154	<	// Create a surface point type in MPI to send
155	<	surfacePtType = MPI::DOUBLE.Create_contiguous(3);
156	<	surfacePtType.Commit();
157	<
158	<
159	<	#endif
80	>	ConvexHull::ConvexHull() : Hull(), dim_(3), options_("qhull Qt Pp") {
81		}
82
83	<	void ConvexHull::computeHull(std::vector<StuntDouble*> bodydoubles)
163	<	{
83	>	void ConvexHull::computeHull(std::vector<StuntDouble*> bodydoubles) {
84
85	<	std::vector<Enriched_Point_3> points;
166	<	ptMapType myMap;
167	<	Point_iterator   hc;
168	<
169	<	// Copy the positon vector into a points vector for cgal.
170	<	std::vector<StuntDouble*>::iterator SD;
85	>	int numpoints = bodydoubles.size();
86
87	<	for (SD =bodydoubles.begin(); SD != bodydoubles.end(); ++SD)
173	<	{
174	<	Vector3d pos = (*SD)->getPos();
175	<	Enriched_Point_3* pt = new Enriched_Point_3(pos.x(),pos.y(),pos.z());
176	<	pt->setSD(*SD);
177	<	points.push_back(*pt);
178	<	// myMap[pt]=(*SD);
179	<	}
87	>	Triangles_.clear();
88
89	<	// define object to hold convex hull
90	<	CGAL::Object ch_object_;
91	<	Polyhedron_3 polyhedron;
89	>	vertexT *vertex, **vertexp;
90	>	facetT *facet;
91	>	setT *vertices;
92	>	int curlong, totlong;
93	>	pointT *intPoint;
94	>
95	>	std::vector<double> ptArray(numpoints*dim_);
96
97	<	// compute convex hull
97	>	// Copy the positon vector into a points vector for qhull.
98	>	std::vector<StuntDouble*>::iterator SD;
99	>	int i = 0;
100	>	for (SD =bodydoubles.begin(); SD != bodydoubles.end(); ++SD){
101	>	Vector3d pos = (*SD)->getPos();
102	>	ptArray[dim_ * i] = pos.x();
103	>	ptArray[dim_ * i + 1] = pos.y();
104	>	ptArray[dim_ * i + 2] = pos.z();
105	>	i++;
106	>	}
107
108	<	std::vector<Enriched_Point_3>::iterator testpt;
108	>	/* Clean up memory from previous convex hull calculations */
109	>	boolT ismalloc = False;
110
111	<
112	<
113	<	CGAL::convex_hull_3(points.begin(), points.end(), polyhedron);
114	<
111	>	/* compute the hull for our local points (or all the points for single
112	>	processor versions) */
113	>	if (qh_new_qhull(dim_, numpoints, &ptArray[0], ismalloc,
114	>	const_cast<char *>(options_.c_str()), NULL, stderr)) {
115	>
116	>	sprintf(painCave.errMsg, "ConvexHull: Qhull failed to compute convex hull");
117	>	painCave.isFatal = 1;
118	>	simError();
119	>
120	>	} //qh_new_qhull
121
194	–
195	–	Ns_ = polyhedron.size_of_vertices();
122
123		#ifdef IS_MPI
124	<	/* Gather an array of the number of verticies on each processor */
124	>	//If we are doing the mpi version, set up some vectors for data communication
125
126	+	int nproc = MPI::COMM_WORLD.Get_size();
127	+	int myrank = MPI::COMM_WORLD.Get_rank();
128	+	int localHullSites = 0;
129
130	<	surfacePtsGlobal_.clear();
131	<	surfacePtsLocal_.clear();
130	>	std::vector<int> hullSitesOnProc(nproc, 0);
131	>	std::vector<int> coordsOnProc(nproc, 0);
132	>	std::vector<int> displacements(nproc, 0);
133	>	std::vector<int> vectorDisplacements(nproc, 0);
134
135	<	MPI::COMM_WORLD.Allgather(&Ns_,1,MPI::INT,&NstoProc_[0],1,MPI::INT);
135	>	std::vector<double> coords;
136	>	std::vector<double> vels;
137	>	std::vector<int> indexMap;
138	>	std::vector<double> masses;
139
140	<	for (int i = 0; i < nproc_; i++){
141	<	Nsglobal_ += NstoProc_[i];
142	<	}
143	<	/*Reminder ideally, we would like to reserve size for the vectors here*/
210	<	surfacePtsLocal_.reserve(Ns_);
211	<	surfacePtsGlobal_.resize(Nsglobal_);
212	<	//  std::fill(surfacePtsGlobal_.begin(),surfacePtsGlobal_.end(),0);
140	>	FORALLvertices{
141	>	localHullSites++;
142	>
143	>	int idx = qh_pointid(vertex->point);
144
145	<	/* Build a displacements array */
215	<	for (int i = 1; i < nproc_; i++){
216	<	vecdispls_[i] = vecdispls_[i-1] + NstoProc_[i-1];
217	<	}
218	<
219	<	int noffset = vecdispls_[myrank_];
220	<	/* gather the potential hull */
221	<
222	<
223	<	for (hc =polyhedron.points_begin();hc != polyhedron.points_end(); ++hc){
224	<	Point_3 mypoint = *hc;
225	<	surfacePt_ mpiSurfacePt;
226	<	mpiSurfacePt.x = CGAL::to_double(mypoint.x());
227	<	mpiSurfacePt.y = CGAL::to_double(mypoint.y());
228	<	mpiSurfacePt.z = CGAL::to_double(mypoint.z());
229	<	surfacePtsLocal_.push_back(mpiSurfacePt);
230	<	}
145	>	indexMap.push_back(idx);
146
147	<	MPI::COMM_WORLD.Allgatherv(&surfacePtsLocal_[0],Ns_,surfacePtType,&surfacePtsGlobal_[0],NstoProc_,vecdispls_,surfacePtType);
148	<	std::vector<surfacePt_>::iterator spt;
149	<	std::vector<Enriched_Point_3> gblpoints;
147	>	coords.push_back(ptArray[dim_  * idx]);
148	>	coords.push_back(ptArray[dim_  * idx + 1]);
149	>	coords.push_back(ptArray[dim_  * idx + 2]);
150
151	<	int mine = 0;
237	<	int pointidx = 0;
238	<	for (spt = surfacePtsGlobal_.begin(); spt != surfacePtsGlobal_.end(); ++spt)
239	<	{
240	<	surfacePt_ thispos = *spt;
241	<	Enriched_Point_3 ept(thispos.x,thispos.y,thispos.z);
242	<	if (mine >= noffset && mine < noffset + Ns_){
243	<	ept.myPoint();
244	<	ept.setSD(points[pointidx].getStuntDouble());
245	<	pointidx++;
246	<	}
247	<	gblpoints.push_back(ept);
151	>	StuntDouble* sd = bodydoubles[idx];
152
153	<	mine++;
154	<	}
153	>	Vector3d vel = sd->getVel();
154	>	vels.push_back(vel.x());
155	>	vels.push_back(vel.y());
156	>	vels.push_back(vel.z());
157
158	<	/* Compute the global hull */
159	<	polyhedron.clear();
254	<	CGAL::convex_hull_3(gblpoints.begin(), gblpoints.end(), polyhedron);
158	>	masses.push_back(sd->getMass());
159	>	}
160
161	+	MPI::COMM_WORLD.Allgather(&localHullSites, 1, MPI::INT, &hullSitesOnProc[0],
162	+	1, MPI::INT);
163
164	<	#endif
165	<
166	<
167	<
261	<	/* Loop over all of the surface triangles and build data structures for atoms and normals*/
262	<	Facet_iterator j;
263	<	area_ = 0;
264	<	for ( j = polyhedron.facets_begin(); j !=polyhedron.facets_end(); ++j) {
265	<	Halfedge_handle h = j->halfedge();
266	<
267	<	Point_3 r0=h->vertex()->point();
268	<	Point_3 r1=h->next()->vertex()->point();
269	<	Point_3 r2=h->next()->next()->vertex()->point();
270	<
271	<	Point_3* pr0 = &r0;
272	<	Point_3* pr1 = &r1;
273	<	Point_3* pr2 = &r2;
274	<
275	<	Enriched_Point_3* er0 = static_cast<Enriched_Point_3*>(pr0);
276	<	Enriched_Point_3* er1 = static_cast<Enriched_Point_3*>(pr1);
277	<	Enriched_Point_3* er2 = static_cast<Enriched_Point_3*>(pr2);
278	<
279	<	// StuntDouble* sd = er0->getStuntDouble();
280	<	std::cerr << "sd globalIndex = " << to_double(er0->x()) << "\n";
281	<
282	<	Point_3 thisCentroid = CGAL::centroid(r0,r1,r2);
283	<
284	<	Vector_3 normal = CGAL::cross_product(r1-r0,r2-r0);
285	<
286	<	Triangle* face = new Triangle();
287	<	Vector3d V3dNormal(CGAL::to_double(normal.x()),CGAL::to_double(normal.y()),CGAL::to_double(normal.z()));
288	<	Vector3d V3dCentroid(CGAL::to_double(thisCentroid.x()),CGAL::to_double(thisCentroid.y()),CGAL::to_double(thisCentroid.z()));
289	<	face->setNormal(V3dNormal);
290	<	face->setCentroid(V3dCentroid);
291	<	RealType faceArea = 0.5*V3dNormal.length();
292	<	face->setArea(faceArea);
293	<	area_ += faceArea;
294	<	Triangles_.push_back(face);
295	<	//    ptMapType::const_iterator locn=myMap.find(mypoint);
296	<	//    int myIndex = locn->second;
297	<
164	>	int globalHullSites = 0;
165	>	for (int iproc = 0; iproc < nproc; iproc++){
166	>	globalHullSites += hullSitesOnProc[iproc];
167	>	coordsOnProc[iproc] = dim_ * hullSitesOnProc[iproc];
168		}
299	–
300	–
169
170	<
171	<	}
304	<	void ConvexHull::printHull(const std::string& geomFileName)
305	<	{
306	<	/*
307	<	std::ofstream newGeomFile;
170	>	displacements[0] = 0;
171	>	vectorDisplacements[0] = 0;
172
173	<	//create new .md file based on old .md file
174	<	newGeomFile.open("testhull.off");
175	<
312	<	// Write polyhedron in Object File Format (OFF).
313	<	CGAL::set_ascii_mode( std::cout);
314	<	newGeomFile << "OFF" << std::endl << polyhedron.size_of_vertices() << ' '
315	<	<< polyhedron.size_of_facets() << " 0" << std::endl;
316	<	std::copy( polyhedron.points_begin(), polyhedron.points_end(),
317	<	std::ostream_iterator<Point_3>( newGeomFile, "\n"));
318	<	for (  Facet_iterator i = polyhedron.facets_begin(); i != polyhedron.facets_end(); ++i) {
319	<	Halfedge_facet_circulator j = i->facet_begin();
320	<	// Facets in polyhedral surfaces are at least triangles.
321	<	CGAL_assertion( CGAL::circulator_size(j) >= 3);
322	<	newGeomFile << CGAL::circulator_size(j) << ' ';
323	<	do {
324	<	newGeomFile << ' ' << std::distance(polyhedron.vertices_begin(), j->vertex());
325	<	} while ( ++j != i->facet_begin());
326	<	newGeomFile << std::endl;
173	>	for (int iproc = 1; iproc < nproc; iproc++){
174	>	displacements[iproc] = displacements[iproc-1] + hullSitesOnProc[iproc-1];
175	>	vectorDisplacements[iproc] = vectorDisplacements[iproc-1] + coordsOnProc[iproc-1];
176		}
328	–
329	–	newGeomFile.close();
330	–	*/
331	–	/*
332	–	std::ofstream newGeomFile;
177
178	<	//create new .md file based on old .md file
179	<	newGeomFile.open(geomFileName.c_str());
178	>	std::vector<double> globalCoords(dim_ * globalHullSites);
179	>	std::vector<double> globalVels(dim_ * globalHullSites);
180	>	std::vector<double> globalMasses(globalHullSites);
181
182	<	// Write polyhedron in Object File Format (OFF).
183	<	CGAL::set_ascii_mode( std::cout);
184	<	newGeomFile << "OFF" << std::endl << ch_polyhedron.size_of_vertices() << ' '
185	<	<< ch_polyhedron.size_of_facets() << " 0" << std::endl;
186	<	std::copy( ch_polyhedron.points_begin(), ch_polyhedron.points_end(),
342	<	std::ostream_iterator<Point_3>( newGeomFile, "\n"));
343	<	for (  Facet_iterator i = ch_polyhedron.facets_begin(); i != ch_polyhedron.facets_end(); ++i)
344	<	{
345	<	Halfedge_facet_circulator j = i->facet_begin();
346	<	// Facets in polyhedral surfaces are at least triangles.
347	<	CGAL_assertion( CGAL::circulator_size(j) >= 3);
348	<	newGeomFile << CGAL::circulator_size(j) << ' ';
349	<	do
350	<	{
351	<	newGeomFile << ' ' << std::distance(ch_polyhedron.vertices_begin(), j->vertex());
352	<	}
353	<	while ( ++j != i->facet_begin());
354	<	newGeomFile << std::endl;
355	<	}
356	<
357	<	newGeomFile.close();
358	<	*/
359	<
360	<	}
361	<
362	<
363	<
364	<
365	<
366	<
367	<
368	<	#else
369	<	#ifdef HAVE_QHULL
370	<	/* Old options Qt Qu Qg QG0 FA */
371	<	/* More old opts Qc Qi Pp*/
372	<	ConvexHull::ConvexHull() : Hull(), dim_(3), options_("qhull Qt Pp"), Ns_(200), nTriangles_(0) {
373	<	//If we are doing the mpi version, set up some vectors for data communication
374	<	#ifdef IS_MPI
375	<
376	<
377	<	nproc_ = MPI::COMM_WORLD.Get_size();
378	<	myrank_ = MPI::COMM_WORLD.Get_rank();
379	<	NstoProc_ = new int[nproc_];
380	<	vecdispls_   = new int[nproc_];
381	<	vecNstoProc_ = new int[nproc_];
382	<	displs_ = new int[nproc_];
383	<
384	<	// Create a surface point type in MPI to send
385	<	//surfacePtType = MPI::DOUBLE.Create_contiguous(3);
386	<	// surfacePtType.Commit();
387	<
388	<
389	<	#endif
390	<	}
391	<
182	>	int count = coordsOnProc[myrank];
183	>
184	>	MPI::COMM_WORLD.Allgatherv(&coords[0], count, MPI::DOUBLE, &globalCoords[0],
185	>	&coordsOnProc[0], &vectorDisplacements[0],
186	>	MPI::DOUBLE);
187
188	+	MPI::COMM_WORLD.Allgatherv(&vels[0], count, MPI::DOUBLE, &globalVels[0],
189	+	&coordsOnProc[0], &vectorDisplacements[0],
190	+	MPI::DOUBLE);
191
192	<	void ConvexHull::computeHull(std::vector<StuntDouble*> bodydoubles)
193	<	{
194	<
397	<	std::vector<int> surfaceIDs;
398	<	std::vector<int> surfaceIDsGlobal;
399	<	std::vector<int> localPtsMap;
400	<	int numpoints = bodydoubles.size();
192	>	MPI::COMM_WORLD.Allgatherv(&masses[0], localHullSites, MPI::DOUBLE,
193	>	&globalMasses[0], &hullSitesOnProc[0],
194	>	&displacements[0], MPI::DOUBLE);
195
196	<	//coordT* pt_array;
197	<	coordT* surfpt_array;
198	<	vertexT *vertex, **vertexp;
199	<	facetT *facet;
200	<	setT *vertices;
201	<	int curlong,totlong;
202	<	int id;
196	>	// Free previous hull
197	>	qh_freeqhull(!qh_ALL);
198	>	qh_memfreeshort(&curlong, &totlong);
199	>	if (curlong || totlong) {
200	>	sprintf(painCave.errMsg, "ConvexHull: qhull internal warning:\n"
201	>	"\tdid not free %d bytes of long memory (%d pieces)",
202	>	totlong, curlong);
203	>	painCave.isFatal = 1;
204	>	simError();
205	>	}
206
207	<	coordT *point,**pointp;
208	<
209	<
210	<	FILE *outdummy = NULL;
211	<	FILE *errdummy = NULL;
212	<
213	<	//pt_array = (coordT*) malloc(sizeof(coordT) * (numpoints * dim_));
417	<
418	<	//  double* ptArray = new double[numpoints * 3];
419	<	std::vector<double> ptArray(numpoints*3);
420	<	std::vector<bool> isSurfaceID(numpoints);
421	<
422	<	// Copy the positon vector into a points vector for qhull.
423	<	std::vector<StuntDouble*>::iterator SD;
424	<	int i = 0;
425	<	for (SD =bodydoubles.begin(); SD != bodydoubles.end(); ++SD)
426	<	{
427	<	Vector3d pos = (*SD)->getPos();
428	<
429	<	ptArray[dim_ * i] = pos.x();
430	<	ptArray[dim_ * i + 1] = pos.y();
431	<	ptArray[dim_ * i + 2] = pos.z();
432	<	i++;
433	<	}
434	<
435	<
436	<
437	<
438	<
439	<
440	<	boolT ismalloc = False;
441	<	/* Clean up memory from previous convex hull calculations*/
442	<
443	<	Triangles_.clear();
444	<	surfaceSDs_.clear();
445	<	surfaceSDs_.reserve(Ns_);
446	<
447	<	if (qh_new_qhull(dim_, numpoints, &ptArray[0], ismalloc,
448	<	const_cast<char *>(options_.c_str()), NULL, stderr)) {
449	<
450	<	sprintf(painCave.errMsg, "ConvexHull: Qhull failed to compute convex hull");
451	<	painCave.isFatal = 1;
452	<	simError();
453	<
207	>	if (qh_new_qhull(dim_, globalHullSites, &globalCoords[0], ismalloc,
208	>	const_cast<char *>(options_.c_str()), NULL, stderr)){
209	>
210	>	sprintf(painCave.errMsg, "ConvexHull: Qhull failed to compute global convex hull");
211	>	painCave.isFatal = 1;
212	>	simError();
213	>
214		} //qh_new_qhull
215
216	<
217	<	#ifdef IS_MPI
218	<	std::vector<double> localPts;
219	<	std::vector<double> localVel;
220	<	std::vector<double> localMass;
221	<	int localPtArraySize;
222	<
223	<
464	<	std::fill(isSurfaceID.begin(),isSurfaceID.end(),false);
465	<
466	<
467	<	FORALLfacets {
216	>	#endif
217	>	intPoint = qh interior_point;
218	>	RealType calcvol = 0.0;
219	>	FORALLfacets {
220	>	Triangle face;
221	>	//Qhull sets the unit normal in facet->normal
222	>	Vector3d V3dNormal(facet->normal[0], facet->normal[1], facet->normal[2]);
223	>	face.setUnitNormal(V3dNormal);
224
225	<	if (!facet->simplicial){
226	<	// should never happen with Qt
471	<	sprintf(painCave.errMsg, "ConvexHull: non-simplicaial facet detected");
472	<	painCave.isFatal = 1;
473	<	simError();
474	<	}
225	>	RealType faceArea = qh_facetarea(facet);
226	>	face.setArea(faceArea);
227
476	–
228		vertices = qh_facet3vertex(facet);
478	–	FOREACHvertex_(vertices){
479	–	id = qh_pointid(vertex->point);
480	–
481	–	if( !isSurfaceID[id] ){
482	–	isSurfaceID[id] = true;
483	–	}
484	–	}
485	–	qh_settempfree(&vertices);
229
230	<	} //FORALLfacets
230	>	coordT *center = qh_getcenter(vertices);
231	>	Vector3d V3dCentroid(center[0], center[1], center[2]);
232	>	face.setCentroid(V3dCentroid);
233
234	<
234	>	Vector3d faceVel = V3Zero;
235	>	Vector3d p[3];
236	>	RealType faceMass = 0.0;
237
238	+	int ver = 0;
239
240	<	int idx = 0;
241	<	int nIsIts = 0;
242	<	FORALLvertices {
243	<	idx = qh_pointid(vertex->point);
244	<	localPts.push_back(ptArray[dim_ * idx]);
245	<	localPts.push_back(ptArray[dim_ * idx + 1]);
246	<	localPts.push_back(ptArray[dim_ * idx + 2]);
240	>	FOREACHvertex_(vertices){
241	>	int id = qh_pointid(vertex->point);
242	>	p[ver][0] = vertex->point[0];
243	>	p[ver][1] = vertex->point[1];
244	>	p[ver][2] = vertex->point[2];
245	>	Vector3d vel;
246	>	RealType mass;
247
248	<	Vector3d vel = bodydoubles[idx]->getVel();
249	<	localVel.push_back(vel.x());
250	<	localVel.push_back(vel.y());
251	<	localVel.push_back(vel.z());
248	>	#ifdef IS_MPI
249	>	vel = Vector3d(globalVels[dim_ * id],
250	>	globalVels[dim_ * id + 1],
251	>	globalVels[dim_ * id + 2]);
252	>	mass = globalMasses[id];
253
254	+	// localID will be between 0 and hullSitesOnProc[myrank] if we
255	+	// own this guy.
256
257	<	RealType bdmass = bodydoubles[idx]->getMass();
507	<	localMass.push_back(bdmass);
257	>	int localID = id - displacements[myrank];
258
509	–	localPtsMap.push_back(idx);
259
260	<	}
260	>	if (localID >= 0 && localID < hullSitesOnProc[myrank]){
261	>	face.addVertexSD(bodydoubles[indexMap[localID]]);
262	>	}else{
263	>	face.addVertexSD(NULL);
264	>	}
265	>	#else
266	>	vel = bodydoubles[id]->getVel();
267	>	mass = bodydoubles[id]->getMass();
268	>	face.addVertexSD(bodydoubles[id]);
269	>	#endif
270	>	faceVel = faceVel + vel;
271	>	faceMass = faceMass + mass;
272	>	ver++;
273	>	} //Foreachvertex
274
275	+	face.addVertices(p[0], p[1], p[2]);
276	+	face.setFacetMass(faceMass);
277	+	face.setFacetVelocity(faceVel/3.0);
278	+	/*
279	+	RealType comparea = face.computeArea();
280	+	realT calcarea = qh_facetarea (facet);
281	+	Vector3d V3dCompNorm = -face.computeUnitNormal();
282	+	RealType thisOffset = ((0.0-p[0][0])*V3dCompNorm[0] + (0.0-p[0][1])*V3dCompNorm[1] + (0.0-p[0][2])*V3dCompNorm[2]);
283	+	RealType dist = facet->offset + intPoint[0]*V3dNormal[0] + intPoint[1]*V3dNormal[1] + intPoint[2]*V3dNormal[2];
284	+	std::cout << "facet offset and computed offset: " << facet->offset << "  " << thisOffset <<  std::endl;
285	+	calcvol +=  -dist*comparea/qh hull_dim;
286	+	*/
287	+	Triangles_.push_back(face);
288	+	qh_settempfree(&vertices);
289
290	<	localPtArraySize = int(localPts.size()/3.0);
515	<
516	<	MPI::COMM_WORLD.Allgather(&localPtArraySize,1,MPI::INT,&NstoProc_[0],1,MPI::INT);
290	>	} //FORALLfacets
291
292	<	Nsglobal_=0;
293	<	for (int i = 0; i < nproc_; i++){
294	<	Nsglobal_ += NstoProc_[i];
295	<	vecNstoProc_[i] = NstoProc_[i]*3;
522	<	}
523	<
524	<
525	<	int nglobalPts = Nsglobal_*3;
526	<
527	<
528	<	std::vector<double> globalPts(nglobalPts);
529	<	std::vector<double> globalVel(nglobalPts);
530	<	std::vector<double> globalMass(Nsglobal_);
531	<
532	<
533	<
534	<	isSurfaceID.resize(nglobalPts);
535	<
536	<
537	<	std::fill(globalPts.begin(),globalPts.end(),0.0);
538	<
539	<	vecdispls_[0] = 0;
540	<	/* Build a displacements array */
541	<	for (int i = 1; i < nproc_; i++){
542	<	vecdispls_[i] = vecdispls_[i-1] + vecNstoProc_[i-1];
543	<	}
544	<
545	<	displs_[0] = 0;
546	<	for (int i = 1; i < nproc_; i++){
547	<	displs_[i] = displs_[i-1] + NstoProc_[i-1];
548	<	}
549	<
550	<	int noffset = vecdispls_[myrank_];
551	<	/* gather the potential hull */
552	<
553	<	MPI::COMM_WORLD.Allgatherv(&localPts[0],localPtArraySize*3,MPI::DOUBLE,&globalPts[0],&vecNstoProc_[0],&vecdispls_[0],MPI::DOUBLE);
554	<	MPI::COMM_WORLD.Allgatherv(&localVel[0],localPtArraySize*3,MPI::DOUBLE,&globalVel[0],&vecNstoProc_[0],&vecdispls_[0],MPI::DOUBLE);
555	<	MPI::COMM_WORLD.Allgatherv(&localMass[0],localPtArraySize,MPI::DOUBLE,&globalMass[0],&NstoProc_[0],&displs_[0],MPI::DOUBLE);
556	<
557	<	/*
558	<	int tmpidx = 0;
559	<
560	<	if (myrank_ == 0){
561	<	for (i = 0; i < nglobalPts-3; i++){
562	<	std::cout << "Au   " << globalPts[tmpidx] << "  " << globalPts[tmpidx+1] << "  " << globalPts[tmpidx +2] << std::endl;
563	<	tmpidx = tmpidx + 3;
564	<	}
565	<	}
566	<	*/
567	<
568	<	// Free previous hull
292	>	qh_getarea(qh facet_list);
293	>	volume_ = qh totvol;
294	>	area_ = qh totarea;
295	>	//  std::cout << "My volume is: " << calcvol << " qhull volume is:" << volume_ << std::endl;
296		qh_freeqhull(!qh_ALL);
297		qh_memfreeshort(&curlong, &totlong);
298	<	if (curlong || totlong)
299	<	std::cerr << "qhull internal warning (main): did not free %d bytes of long memory (%d pieces) "
300	<	<< totlong << curlong << std::endl;
298	>	if (curlong || totlong) {
299	>	sprintf(painCave.errMsg, "ConvexHull: qhull internal warning:\n"
300	>	"\tdid not free %d bytes of long memory (%d pieces)",
301	>	totlong, curlong);
302	>	painCave.isFatal = 1;
303	>	simError();
304	>	}
305	>	}
306
307	<	if (qh_new_qhull(dim_, Nsglobal_, &globalPts[0], ismalloc,
576	<	const_cast<char *>(options_.c_str()), NULL, stderr)){
307	>	void ConvexHull::printHull(const std::string& geomFileName) {
308
578	–	sprintf(painCave.errMsg, "ConvexHull: Qhull failed to compute global convex hull");
579	–	painCave.isFatal = 1;
580	–	simError();
581	–
582	–	} //qh_new_qhull
583	–
584	–	#endif
585	–
586	–
587	–
588	–
589	–
590	–
591	–	unsigned int nf = qh num_facets;
592	–
593	–	/* Build Surface SD list first */
594	–
595	–	std::fill(isSurfaceID.begin(),isSurfaceID.end(),false);
596	–
597	–	FORALLfacets {
598	–
599	–	if (!facet->simplicial){
600	–	// should never happen with Qt
601	–	sprintf(painCave.errMsg, "ConvexHull: non-simplicaial facet detected");
602	–	painCave.isFatal = 1;
603	–	simError();
604	–	} //simplicical
605	–
606	–	Triangle face;
607	–	Vector3d  V3dNormal(facet->normal[0],facet->normal[1],facet->normal[2]);
608	–	face.setNormal(V3dNormal);
609	–
610	–
611	–
612	–	//RealType faceArea = 0.5*V3dNormal.length();
613	–	RealType faceArea = qh_facetarea(facet);
614	–	face.setArea(faceArea);
615	–
616	–
617	–	vertices = qh_facet3vertex(facet);
618	–
619	–	coordT *center = qh_getcenter(vertices);
620	–	Vector3d V3dCentroid(center[0], center[1], center[2]);
621	–	face.setCentroid(V3dCentroid);
622	–	Vector3d faceVel = V3Zero;
623	–	Vector3d p[3];
624	–	RealType faceMass = 0.0;
625	–	int ver = 0;
626	–	FOREACHvertex_(vertices){
627	–	id = qh_pointid(vertex->point);
628	–	p[ver][0] = vertex->point[0];
629	–	p[ver][1] = vertex->point[1];
630	–	p[ver][2] = vertex->point[2];
631	–	int localindex = id;
309		#ifdef IS_MPI
310	<	Vector3d velVector(globalVel[dim_ * id],globalVel[dim_ * id + 1], globalVel[dim_ * id + 1]);
634	<
635	<	faceVel = faceVel + velVector;
636	<	faceMass = faceMass + globalMass[id];
637	<	if (id >= noffset/3 && id < (noffset + localPtArraySize)/3 ){
638	<	localindex = localPtsMap[id-noffset/3];
639	<	#else
640	<	faceVel = faceVel + bodydoubles[localindex]->getVel();
641	<	faceMass = faceMass + bodydoubles[localindex]->getMass();
310	>	if (worldRank == 0)  {
311		#endif
643	–	face.addVertexSD(bodydoubles[localindex]);
644	–	if( !isSurfaceID[id] ){
645	–	isSurfaceID[id] = true;
646	–	#ifdef IS_MPI
647	–
648	–	#endif
649	–
650	–	surfaceSDs_.push_back(bodydoubles[localindex]);
651	–
652	–	} //IF isSurfaceID
653	–
654	–	#ifdef IS_MPI
655	–
656	–	}else{
657	–	face.addVertexSD(NULL);
658	–	}
659	–	#endif
660	–	ver++;
661	–	} //Foreachvertex
662	–	/*
663	–	if (!SETempty_(facet->coplanarset)){
664	–	FOREACHpoint_(facet->coplanarset){
665	–	id = qh_pointid(point);
666	–	surfaceSDs_.push_back(bodydoubles[id]);
667	–	}
668	–	}
669	–	*/
670	–	face.addVertices(p[0],p[1],p[2]);
671	–	face.setFacetMass(faceMass);
672	–	face.setFacetVelocity(faceVel/3.0);
673	–	Triangles_.push_back(face);
674	–	qh_settempfree(&vertices);
675	–
676	–	} //FORALLfacets
677	–
678	–	/*
679	–	std::cout << surfaceSDs_.size() << std::endl;
680	–	for (SD = surfaceSDs_.begin(); SD != surfaceSDs_.end(); ++SD){
681	–	Vector3d thisatom = (*SD)->getPos();
682	–	std::cout << "Au " << thisatom.x() << "  " << thisatom.y() << " " << thisatom.z() << std::endl;
683	–	}
684	–	*/
685	–
686	–
687	–
688	–	Ns_ = surfaceSDs_.size();
689	–	nTriangles_ = Triangles_.size();
690	–
691	–	qh_getarea(qh facet_list);
692	–	volume_ = qh totvol;
693	–	area_ = qh totarea;
694	–
695	–
696	–
697	–	qh_freeqhull(!qh_ALL);
698	–	qh_memfreeshort(&curlong, &totlong);
699	–	if (curlong || totlong)
700	–	std::cerr << "qhull internal warning (main): did not free %d bytes of long memory (%d pieces) "
701	–	<< totlong << curlong << std::endl;
702	–
703	–
704	–
705	–	}
706	–
707	–
708	–
709	–	void ConvexHull::printHull(const std::string& geomFileName)
710	–	{
711	–
312		FILE *newGeomFile;
313
314		//create new .md file based on old .md file
#	Line 718 | Line 318 | void ConvexHull::printHull(const std::string& geomFile
318		qh_printfacets(newGeomFile, qh PRINTout[i], qh facet_list, NULL, !qh_ALL);
319
320		fclose(newGeomFile);
321	+	#ifdef IS_MPI
322	+	}
323	+	#endif
324		}
325		#endif //QHULL
723	–	#endif //CGAL
724	–
725	–
726	–

Comparing trunk/src/math/ConvexHull.cpp (property svn:keywords):
Revision 1365 by chuckv, Mon Oct 12 20:11:29 2009 UTC vs.
Revision 1619 by gezelter, Mon Sep 12 18:18:38 2011 UTC

#	Line 0 | Line 1
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