ihm3.cpp 10.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405
/*******************************************************************************
* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
* version 0.1                                                                  *
* Copyright (C) 2009, IGG Team, LSIIT, University of Strasbourg                *
*                                                                              *
* This library is free software; you can redistribute it and/or modify it      *
* under the terms of the GNU Lesser General Public License as published by the *
* Free Software Foundation; either version 2.1 of the License, or (at your     *
* option) any later version.                                                   *
*                                                                              *
* This library is distributed in the hope that it will be useful, but WITHOUT  *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or        *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License  *
* for more details.                                                            *
*                                                                              *
* You should have received a copy of the GNU Lesser General Public License     *
* along with this library; if not, write to the Free Software Foundation,      *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
*                                                                              *
* Web site: https://iggservis.u-strasbg.fr/CGoGN/                              *
* Contact information: cgogn@unistra.fr                                        *
*                                                                              *
*******************************************************************************/

#include "Algo/ImplicitHierarchicalMesh/ihm3.h"
#include <math.h>

namespace CGoGN
{

namespace Algo
{

namespace IHM3
{

//OK
ImplicitHierarchicalMap3::ImplicitHierarchicalMap3() : m_curLevel(0), m_maxLevel(0), m_edgeIdCount(0), m_faceIdCount(0)
{
	m_dartLevel = Map3::addAttribute<unsigned int>(DART_ORBIT, "dartLevel") ;
	m_edgeId = Map3::addAttribute<unsigned int>(DART_ORBIT, "edgeId") ;
	m_faceId = Map3::addAttribute<unsigned int>(DART_ORBIT, "faceId") ;

	for(unsigned int i = 0; i < NB_ORBITS; ++i)
		m_nextLevelCell[i] = NULL ;
}

//OK
ImplicitHierarchicalMap3::~ImplicitHierarchicalMap3()
{
	Map3::removeAttribute(m_edgeId) ;
	Map3::removeAttribute(m_faceId) ;
	Map3::removeAttribute(m_dartLevel) ;
}

//OK
void ImplicitHierarchicalMap3::init()
{
	initEdgeId() ;
	initFaceId();

	for(unsigned int orbit = 0; orbit < NB_ORBITS; ++orbit)
	{
		if(m_nextLevelCell[orbit] != NULL)
		{
			AttribContainer& cellCont = m_attribs[orbit] ;
			for(unsigned int i = cellCont.begin(); i < cellCont.end(); cellCont.next(i))
				m_nextLevelCell[orbit]->operator[](i) = EMBNULL ;
		}
	}
}

//OK
void ImplicitHierarchicalMap3::initEdgeId()
{
	m_edgeIdCount = 0 ;
	DartMarker edgeMark(*this) ;
	for(Dart d = Map3::begin(); d != Map3::end(); Map3::next(d))
	{
		if(!edgeMark.isMarked(d))
		{
			Dart e = d;
			do
			{
				m_edgeId[e] = m_edgeIdCount;
				edgeMark.mark(e);

				m_edgeId[Map3::phi2(e)] = m_edgeIdCount ;
				edgeMark.mark(Map3::phi2(e));

				e = Map3::alpha2(e);
			} while(e != d);

			m_edgeIdCount++;
		}
	}
}

//OK
void ImplicitHierarchicalMap3::initFaceId()
{
	m_faceIdCount = 0 ;
	DartMarker faceMark(*this) ;
	for(Dart d = Map3::begin(); d != Map3::end(); Map3::next(d))
	{
		if(!faceMark.isMarked(d))
		{
			Dart e = d;
			do
			{
				m_faceId[e] = m_faceIdCount ;
				faceMark.mark(e);

				if(Map3::phi3(e) != e)
				{
					m_faceId[Map3::phi3(e)] = m_faceIdCount ;
					faceMark.mark(Map3::phi3(e));
				}

				e = Map3::phi1(e);
			} while(e != d);

			m_faceIdCount++;
		}
	}
}

//OK
unsigned int ImplicitHierarchicalMap3::faceLevel(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;

	if(m_curLevel == 0)
		return 0 ;

	Dart it = d ;
	Dart old = it ;
	unsigned int fLevel = edgeLevel(it) ;
	do
	{
		it = phi1(it) ;
		if(m_dartLevel[it] < m_dartLevel[old])  	// in a first time, the level of a face
			old = it ;                      		// is the minimum of the levels
		unsigned int l = edgeLevel(it) ;        	// of its edges
		fLevel = l < fLevel ? l : fLevel ;
	} while(it != d) ;

	unsigned int cur = m_curLevel ;
	m_curLevel = fLevel ;

	unsigned int nbSubd = 0 ;
	it = old ;
	unsigned int eId = m_edgeId[old] ;              // the particular case of a face
	do                                              // with all neighboring faces regularly subdivided
	{                                               // but not the face itself
		++nbSubd ;                              	// is treated here
		it = phi1(it) ;
	} while(m_edgeId[it] == eId) ;

	while(nbSubd > 1)
	{
		nbSubd /= 2 ;
		--fLevel ;
	}

	m_curLevel = cur ;

	return fLevel ;

}

//TODO
unsigned int ImplicitHierarchicalMap3::volumeLevel(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;

	if(m_curLevel == 0)
		return 0 ;

	//First : the level of a volume is the
	//minimum of the levels of its faces

	DartMarkerStore mark(*this);		// Lock a marker

	std::vector<Dart> visitedFaces;		// Faces that are traversed
	visitedFaces.reserve(16);
	visitedFaces.push_back(d);			// Start with the face of d
	std::vector<Dart>::iterator face;

	Dart oldest = d ;
	unsigned int vLevel = faceLevel(d);

	//parcours les faces du volume au niveau courant
	//on cherche le brin de niveau le plus bas de la hierarchie
	//on note le niveau le plus bas de la hierarchie
	mark.markOrbit(FACE_ORBIT, d) ;
	for(face = visitedFaces.begin(); face != visitedFaces.end(); ++face)
	{
		Dart e = *face ;

		// in a first time, the level of a face
		//the level of the volume is the minimum of the
		//levels of its faces
		unsigned int fLevel = faceLevel(e) ;
		vLevel = fLevel < vLevel ? fLevel : vLevel ;

		Dart old = faceOldestDart(e);
		if(m_dartLevel[old] < m_dartLevel[oldest])
			oldest = old ;

		do	// add all face neighbours to the table
		{
			Dart ee = phi2(e) ;
			if(!mark.isMarked(ee)) // not already marked
			{
				visitedFaces.push_back(ee) ;
				mark.markOrbit(FACE_ORBIT, ee) ;
			}
			e = phi1(e) ;
		} while(e != *face) ;
	}

	std::cout << "vLevel avant=" << vLevel << std::endl;

	//Second : the case of all faces regularly subdivided but not the volume itself
	unsigned int cur = m_curLevel ;
	m_curLevel = vLevel ;

	unsigned int nbSubd = 0 ;
	Dart it = oldest ;
	unsigned int eId = m_edgeId[oldest] ;

	do
	{
		++nbSubd ;
		it = phi1(it) ;
	} while(m_edgeId[it] == eId) ;


	while(nbSubd > 1)
	{
		nbSubd /= 2 ;
	    --vLevel ;
	}

	m_curLevel = cur ;

	std::cout << "vLevel apres=" << vLevel << std::endl;

	return vLevel;
}

//OK
Dart ImplicitHierarchicalMap3::faceOldestDart(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;

	Dart it = d;
	Dart oldest = it;

	do
	{
		it = phi1(it);

		if(m_dartLevel[it] < m_dartLevel[oldest])
			oldest = it;
	}while(it != d);

	return oldest;
}

//TODO
Dart ImplicitHierarchicalMap3::volumeOldestDart(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;

	Dart oldest = d;
	DartMarkerStore mark(*this);	// Lock a marker

	std::list<Dart> visitedFaces;	// Faces that are traversed
	visitedFaces.push_back(d);		// Start with the face of d
	std::list<Dart>::iterator face;

	// For every face added to the list
	//the oldest dart from a volume is the oldest dart from all faces of this volume
	mark.markOrbit(FACE_ORBIT, d) ;

	for(face = visitedFaces.begin(); face != visitedFaces.end(); ++face)
	{
		Dart e = *face ;

		//for every dart in this face
		Dart old = faceOldestDart(*face);
		if(m_dartLevel[old] < m_dartLevel[oldest])
			oldest = old;

		do	// add all face neighbours to the table
		{
			Dart ee = phi2(e) ;
			if(!mark.isMarked(ee)) // not already marked
			{
				visitedFaces.push_back(ee) ;
				mark.markOrbit(FACE_ORBIT, ee) ;
			}
			e = phi1(e) ;
		} while(e != *face) ;
	}

	return oldest;
}

//OK
bool ImplicitHierarchicalMap3::edgeIsSubdivided(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;

	Dart d2 = phi2(d) ;
	++m_curLevel ;
	Dart d2_l = phi2(d) ;
	--m_curLevel ;
	if(d2 != d2_l)
		return true ;
	else
		return false ;

}

//OK
bool ImplicitHierarchicalMap3::faceIsSubdivided(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;
	unsigned int fLevel = faceLevel(d) ;
	if(fLevel < m_curLevel)
		return false ;

	bool subd = false ;
	++m_curLevel ;
	if(m_dartLevel[phi1(d)] == m_curLevel && m_edgeId[phi1(d)] != m_edgeId[d])
		subd = true ;
	--m_curLevel ;
	return subd ;
}

//OK
bool ImplicitHierarchicalMap3::volumeIsSubdivided(Dart d)
{
	assert(m_dartLevel[d] <= m_curLevel || !"Access to a dart introduced after current level") ;
	unsigned int vLevel = volumeLevel(d);
	if(vLevel < m_curLevel)
		return false;

	//test si toutes les faces sont subdivisee
	DartMarkerStore mark(*this);		// Lock a marker

	std::vector<Dart> visitedFaces;		// Faces that are traversed
	visitedFaces.reserve(16);
	visitedFaces.push_back(d);			// Start with the face of d
	std::vector<Dart>::iterator face;


	Dart old = d ;
	bool facesAreSubdivided = false;

	//parcours les faces du volume au niveau courant
	//on cherche le brin de niveau le plus bas de la hierarchie
	//on note le niveau le plus bas de la hierarchie
	mark.markOrbit(FACE_ORBIT, d) ;
	for(face = visitedFaces.begin(); face != visitedFaces.end(); ++face)
	{
		Dart e = *face ;

		// in a first time, the level of a face
		//the level of the volume is the minimum of the
		//levels of its faces

		facesAreSubdivided &= faceIsSubdivided(e) ;


		do	// add all face neighbours to the table
		{
			Dart ee = phi2(e) ;
			if(!mark.isMarked(ee)) // not already marked
			{
				visitedFaces.push_back(ee) ;
				mark.markOrbit(FACE_ORBIT, ee) ;
			}
			e = phi1(e) ;
		} while(e != *face) ;
	}

	//mais pas le volume lui-meme
	bool subd = false;
	++m_curLevel;
	if(facesAreSubdivided && m_dartLevel[phi2(phi1(phi1(d)))] == m_curLevel && m_faceId[phi2(phi1(phi1(d)))] != m_faceId[d])
		subd = true;
	--m_curLevel;
	return subd;
}

} //namespace IHM

} //namespace Algo

} //namespace CGoGN