1 // Copyright (C) 2007-2011 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // File : SMDS_VolumeTool.cxx
24 // Created : Tue Jul 13 12:22:13 2004
25 // Author : Edward AGAPOV (eap)
28 #pragma warning(disable:4786)
31 #include "SMDS_VolumeTool.hxx"
33 #include "SMDS_MeshElement.hxx"
34 #include "SMDS_MeshNode.hxx"
35 #include "SMDS_PolyhedralVolumeOfNodes.hxx"
36 #include "SMDS_Mesh.hxx"
38 #include "utilities.h"
46 // ======================================================
47 // Node indices in faces depending on volume orientation
48 // making most faces normals external
49 // ======================================================
57 // N0 +---|---+ N1 TETRAHEDRON
65 static int Tetra_F [4][4] = { // FORWARD == EXTERNAL
66 { 0, 1, 2, 0 }, // All faces have external normals
70 static int Tetra_R [4][4] = { // REVERSED
71 { 0, 1, 2, 0 }, // All faces but a bottom have external normals
75 static int Tetra_RE [4][4] = { // REVERSED -> FORWARD (EXTERNAL)
76 { 0, 2, 1, 0 }, // All faces have external normals
80 static int Tetra_nbN [] = { 3, 3, 3, 3 };
85 static int Pyramid_F [5][5] = { // FORWARD == EXTERNAL
86 { 0, 1, 2, 3, 0 }, // All faces have external normals
91 static int Pyramid_R [5][5] = { // REVERSED
92 { 0, 1, 2, 3, 0 }, // All faces but a bottom have external normals
97 static int Pyramid_RE [5][5] = { // REVERSED -> FORWARD (EXTERNAL)
98 { 0, 3, 2, 1, 0 }, // All faces but a bottom have external normals
103 static int Pyramid_nbN [] = { 4, 3, 3, 3, 3 };
114 // | / \ | PENTAHEDRON
120 static int Penta_F [5][5] = { // FORWARD
121 { 0, 1, 2, 0, 0 }, // Top face has an internal normal, other - external
122 { 3, 4, 5, 3, 3 }, // 0 is bottom, 1 is top face
126 static int Penta_R [5][5] = { // REVERSED
127 { 0, 1, 2, 0, 0 }, // Bottom face has an internal normal, other - external
128 { 3, 4, 5, 3, 3 }, // 0 is bottom, 1 is top face
132 static int Penta_FE [5][5] = { // FORWARD -> EXTERNAL
138 static int Penta_RE [5][5] = { // REVERSED -> EXTERNAL
144 static int Penta_nbN [] = { 3, 3, 4, 4, 4 };
151 // N4+----------+N7 |
152 // | | | | HEXAHEDRON
155 // | N1+------|---+N2
161 static int Hexa_F [6][5] = { // FORWARD
162 { 0, 1, 2, 3, 0 }, // opposite faces are neighbouring,
163 { 4, 5, 6, 7, 4 }, // odd face(1,3,5) normal is internal, even(0,2,4) - external
164 { 1, 0, 4, 5, 1 }, // same index nodes of opposite faces are linked
168 // static int Hexa_R [6][5] = { // REVERSED
169 // { 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
170 // { 4, 7, 6, 5, 4 }, // odd face(1,3,5) normal is external, even(0,2,4) - internal
171 // { 1, 5, 4, 0, 1 }, // same index nodes of opposite faces are linked
172 // { 2, 6, 7, 3, 2 },
173 // { 0, 4, 7, 3, 0 },
174 // { 1, 5, 6, 2, 1 }};
175 static int Hexa_FE [6][5] = { // FORWARD -> EXTERNAL
176 { 0, 1, 2, 3, 0 } , // opposite faces are neighbouring,
177 { 4, 7, 6, 5, 4 }, // all face normals are external,
178 { 0, 4, 5, 1, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
182 static int Hexa_RE [6][5] = { // REVERSED -> EXTERNAL
183 { 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
184 { 4, 5, 6, 7, 4 }, // all face normals are external,
185 { 0, 1, 5, 4, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
189 static int Hexa_nbN [] = { 4, 4, 4, 4, 4, 4 };
198 // N0 +---|---+ N1 TETRAHEDRON
206 static int QuadTetra_F [4][7] = { // FORWARD == EXTERNAL
207 { 0, 4, 1, 5, 2, 6, 0 }, // All faces have external normals
208 { 0, 7, 3, 8, 1, 4, 0 },
209 { 1, 8, 3, 9, 2, 5, 1 },
210 { 0, 6, 2, 9, 3, 7, 0 }};
211 static int QuadTetra_R [4][7] = { // REVERSED
212 { 0, 4, 1, 5, 2, 6, 0 }, // All faces but a bottom have external normals
213 { 0, 4, 1, 8, 3, 7, 0 },
214 { 1, 5, 2, 9, 3, 8, 1 },
215 { 0, 7, 3, 9, 2, 6, 0 }};
216 static int QuadTetra_RE [4][7] = { // REVERSED -> FORWARD (EXTERNAL)
217 { 0, 6, 2, 5, 1, 4, 0 }, // All faces have external normals
218 { 0, 4, 1, 8, 3, 7, 0 },
219 { 1, 5, 2, 9, 3, 8, 1 },
220 { 0, 7, 3, 9, 2, 6, 0 }};
221 static int QuadTetra_nbN [] = { 6, 6, 6, 6 };
231 // | | 9 - middle point for (0,4) etc.
244 static int QuadPyram_F [5][9] = { // FORWARD == EXTERNAL
245 { 0, 5, 1, 6, 2, 7, 3, 8, 0 }, // All faces have external normals
246 { 0, 9, 4, 10,1, 5, 0, 4, 4 },
247 { 1, 10,4, 11,2, 6, 1, 4, 4 },
248 { 2, 11,4, 12,3, 7, 2, 4, 4 },
249 { 3, 12,4, 9, 0, 8, 3, 4, 4 }};
250 static int QuadPyram_R [5][9] = { // REVERSED
251 { 0, 5, 1, 6, 2, 7, 3, 8, 0 }, // All faces but a bottom have external normals
252 { 0, 5, 1, 10,4, 9, 0, 4, 4 },
253 { 1, 6, 2, 11,4, 10,1, 4, 4 },
254 { 2, 7, 3, 12,4, 11,2, 4, 4 },
255 { 3, 8, 0, 9, 4, 12,3, 4, 4 }};
256 static int QuadPyram_RE [5][9] = { // REVERSED -> FORWARD (EXTERNAL)
257 { 0, 8, 3, 7, 2, 6, 1, 5, 0 }, // All faces but a bottom have external normals
258 { 0, 5, 1, 10,4, 9, 0, 4, 4 },
259 { 1, 6, 2, 11,4, 10,1, 4, 4 },
260 { 2, 7, 3, 12,4, 11,2, 4, 4 },
261 { 3, 8, 0, 9, 4, 12,3, 4, 4 }};
262 static int QuadPyram_nbN [] = { 8, 6, 6, 6, 6 };
289 static int QuadPenta_F [5][9] = { // FORWARD
290 { 0, 6, 1, 7, 2, 8, 0, 0, 0 }, // Top face has an internal normal, other - external
291 { 3, 9, 4, 10,5, 11,3, 3, 3 }, // 0 is bottom, 1 is top face
292 { 0, 8, 2, 14,5, 11,3, 12,0 },
293 { 1, 13,4, 10,5, 14,2, 7, 1 },
294 { 0, 12,3, 9, 4, 13,1, 6, 0 }};
295 static int QuadPenta_R [5][9] = { // REVERSED
296 { 0, 6, 1, 7, 2, 8, 0, 0, 0 }, // Bottom face has an internal normal, other - external
297 { 3, 9, 4, 10,5, 11,3, 3, 3 }, // 0 is bottom, 1 is top face
298 { 0, 12,3, 11,5, 14,2, 8, 0 },
299 { 1, 7, 2, 14,5, 10,4, 13,1 },
300 { 0, 6, 1, 13,4, 9, 3, 12,0 }};
301 static int QuadPenta_FE [5][9] = { // FORWARD -> EXTERNAL
302 { 0, 6, 1, 7, 2, 8, 0, 0, 0 },
303 { 3,11, 5, 10,4, 9, 3, 3, 3 },
304 { 0, 8, 2, 14,5, 11,3, 12,0 },
305 { 1, 13,4, 10,5, 14,2, 7, 1 },
306 { 0, 12,3, 9, 4, 13,1, 6, 0 }};
307 static int QuadPenta_RE [5][9] = { // REVERSED -> EXTERNAL
308 { 0, 8, 2, 7, 1, 6, 0, 0, 0 },
309 { 3, 9, 4, 10,5, 11,3, 3, 3 },
310 { 0, 12,3, 11,5, 14,2, 8, 0 },
311 { 1, 7, 2, 14,5, 10,4, 13,1 },
312 { 0, 6, 1, 13,4, 9, 3, 12,0 }};
313 static int QuadPenta_nbN [] = { 6, 6, 8, 8, 8 };
321 // N4+-----+-----+N7 | QUADRATIC
322 // | | 15 | | HEXAHEDRON
331 // | N1+-----+-|---+N2
338 static int QuadHexa_F [6][9] = { // FORWARD
339 { 0, 8, 1, 9, 2, 10,3, 11,0 }, // opposite faces are neighbouring,
340 { 4, 12,5, 13,6, 14,7, 15,4 }, // odd face(1,3,5) normal is internal, even(0,2,4) - external
341 { 1, 8, 0, 16,4, 12,5, 17,1 }, // same index nodes of opposite faces are linked
342 { 2, 10,3, 19,7, 14,6, 18,2 },
343 { 0, 11,3, 19,7, 15,4, 16,0 },
344 { 1, 9, 2, 18,6, 13,5, 17,1 }};
345 // static int Hexa_R [6][5] = { // REVERSED
346 // { 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
347 // { 4, 7, 6, 5, 4 }, // odd face(1,3,5) normal is external, even(0,2,4) - internal
348 // { 1, 5, 4, 0, 1 }, // same index nodes of opposite faces are linked
349 // { 2, 6, 7, 3, 2 },
350 // { 0, 4, 7, 3, 0 },
351 // { 1, 5, 6, 2, 1 }};
352 static int QuadHexa_FE [6][9] = { // FORWARD -> EXTERNAL
353 { 0, 8, 1, 9, 2, 10,3, 11,0 }, // opposite faces are neighbouring,
354 { 4, 15,7, 14,6, 13,5, 12,4 }, // all face normals are external,
355 { 0, 16,4, 12,5, 17,1, 8, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
356 { 3, 10,2, 18,6, 14,7, 19,3 },
357 { 0, 11,3, 19,7, 15,4, 16,0 },
358 { 1, 17,5, 13,6, 18,2, 9, 1 }};
359 static int QuadHexa_RE [6][9] = { // REVERSED -> EXTERNAL
360 { 0, 11,3, 10,2, 9, 1, 8, 0 }, // opposite faces are neighbouring,
361 { 4, 12,5, 13,6, 14,7, 15,4 }, // all face normals are external,
362 { 0, 8, 1, 17,5, 12,4, 16,0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
363 { 3, 19,7, 14,6, 18,2, 10,3 },
364 { 0, 16,4, 15,7, 19,3, 11,0 },
365 { 1, 9, 2, 18,6, 13,5, 17,1 }};
366 static int QuadHexa_nbN [] = { 8, 8, 8, 8, 8, 8 };
369 // ========================================================
370 // to perform some calculations without linkage to CASCADE
371 // ========================================================
378 XYZ() { x = 0; y = 0; z = 0; }
379 XYZ( double X, double Y, double Z ) { x = X; y = Y; z = Z; }
380 XYZ( const XYZ& other ) { x = other.x; y = other.y; z = other.z; }
381 XYZ( const SMDS_MeshNode* n ) { x = n->X(); y = n->Y(); z = n->Z(); }
382 inline XYZ operator-( const XYZ& other );
383 inline XYZ Crossed( const XYZ& other );
384 inline double Dot( const XYZ& other );
385 inline double Magnitude();
387 inline XYZ XYZ::operator-( const XYZ& Right ) {
388 return XYZ(x - Right.x, y - Right.y, z - Right.z);
390 inline XYZ XYZ::Crossed( const XYZ& Right ) {
391 return XYZ (y * Right.z - z * Right.y,
392 z * Right.x - x * Right.z,
393 x * Right.y - y * Right.x);
395 inline double XYZ::Dot( const XYZ& Other ) {
396 return(x * Other.x + y * Other.y + z * Other.z);
398 inline double XYZ::Magnitude() {
399 return sqrt (x * x + y * y + z * z);
403 //=======================================================================
404 //function : SMDS_VolumeTool
406 //=======================================================================
408 SMDS_VolumeTool::SMDS_VolumeTool ()
411 myVolForward( true ),
413 myVolumeNbNodes( 0 ),
414 myVolumeNodes( NULL ),
415 myExternalFaces( false ),
418 myFaceNodeIndices( NULL ),
423 //=======================================================================
424 //function : SMDS_VolumeTool
426 //=======================================================================
428 SMDS_VolumeTool::SMDS_VolumeTool (const SMDS_MeshElement* theVolume)
431 myVolForward( true ),
433 myVolumeNbNodes( 0 ),
434 myVolumeNodes( NULL ),
435 myExternalFaces( false ),
438 myFaceNodeIndices( NULL ),
444 //=======================================================================
445 //function : SMDS_VolumeTool
447 //=======================================================================
449 SMDS_VolumeTool::~SMDS_VolumeTool()
451 if ( myVolumeNodes != NULL ) delete [] myVolumeNodes;
452 if ( myFaceNodes != NULL ) delete [] myFaceNodes;
454 myFaceNodeIndices = NULL;
455 myVolumeNodes = myFaceNodes = NULL;
458 //=======================================================================
459 //function : SetVolume
460 //purpose : Set volume to iterate on
461 //=======================================================================
463 bool SMDS_VolumeTool::Set (const SMDS_MeshElement* theVolume)
471 if (myVolumeNodes != NULL) {
472 delete [] myVolumeNodes;
473 myVolumeNodes = NULL;
476 myExternalFaces = false;
480 myFaceNodeIndices = NULL;
481 if (myFaceNodes != NULL) {
482 delete [] myFaceNodes;
486 if ( theVolume && theVolume->GetType() == SMDSAbs_Volume )
488 myVolume = theVolume;
490 myNbFaces = theVolume->NbFaces();
491 myVolumeNbNodes = theVolume->NbNodes();
495 myVolumeNodes = new const SMDS_MeshNode* [myVolumeNbNodes];
496 SMDS_ElemIteratorPtr nodeIt = myVolume->nodesIterator();
497 while ( nodeIt->more() ) {
498 myVolumeNodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
501 if (myVolume->IsPoly()) {
502 myPolyedre = static_cast<const SMDS_PolyhedralVolumeOfNodes*>( myVolume );
504 MESSAGE("Warning: bad volumic element");
509 switch ( myVolumeNbNodes ) {
518 // define volume orientation
520 GetFaceNormal( 0, botNormal.x, botNormal.y, botNormal.z );
521 const SMDS_MeshNode* botNode = myVolumeNodes[ 0 ];
522 int topNodeIndex = myVolume->NbCornerNodes() - 1;
523 while ( !IsLinked( 0, topNodeIndex, /*ignoreMediumNodes=*/true )) --topNodeIndex;
524 const SMDS_MeshNode* topNode = myVolumeNodes[ topNodeIndex ];
525 XYZ upDir (topNode->X() - botNode->X(),
526 topNode->Y() - botNode->Y(),
527 topNode->Z() - botNode->Z() );
528 myVolForward = ( botNormal.Dot( upDir ) < 0 );
536 return ( myVolume != 0 );
539 //=======================================================================
541 //purpose : Inverse volume
542 //=======================================================================
544 #define SWAP_NODES(nodes,i1,i2) \
546 const SMDS_MeshNode* tmp = nodes[ i1 ]; \
547 nodes[ i1 ] = nodes[ i2 ]; \
550 void SMDS_VolumeTool::Inverse ()
552 if ( !myVolume ) return;
554 if (myVolume->IsPoly()) {
555 MESSAGE("Warning: attempt to inverse polyhedral volume");
559 myVolForward = !myVolForward;
562 // inverse top and bottom faces
563 switch ( myVolumeNbNodes ) {
565 SWAP_NODES( myVolumeNodes, 1, 2 );
568 SWAP_NODES( myVolumeNodes, 1, 3 );
571 SWAP_NODES( myVolumeNodes, 1, 2 );
572 SWAP_NODES( myVolumeNodes, 4, 5 );
575 SWAP_NODES( myVolumeNodes, 1, 3 );
576 SWAP_NODES( myVolumeNodes, 5, 7 );
580 SWAP_NODES( myVolumeNodes, 1, 2 );
581 SWAP_NODES( myVolumeNodes, 4, 6 );
582 SWAP_NODES( myVolumeNodes, 8, 9 );
585 SWAP_NODES( myVolumeNodes, 1, 3 );
586 SWAP_NODES( myVolumeNodes, 5, 8 );
587 SWAP_NODES( myVolumeNodes, 6, 7 );
588 SWAP_NODES( myVolumeNodes, 10, 12 );
591 SWAP_NODES( myVolumeNodes, 1, 2 );
592 SWAP_NODES( myVolumeNodes, 4, 5 );
593 SWAP_NODES( myVolumeNodes, 6, 8 );
594 SWAP_NODES( myVolumeNodes, 9, 11 );
595 SWAP_NODES( myVolumeNodes, 13, 14 );
598 SWAP_NODES( myVolumeNodes, 1, 3 );
599 SWAP_NODES( myVolumeNodes, 5, 7 );
600 SWAP_NODES( myVolumeNodes, 8, 11 );
601 SWAP_NODES( myVolumeNodes, 9, 10 );
602 SWAP_NODES( myVolumeNodes, 12, 15 );
603 SWAP_NODES( myVolumeNodes, 13, 14 );
604 SWAP_NODES( myVolumeNodes, 17, 19 );
610 //=======================================================================
611 //function : GetVolumeType
613 //=======================================================================
615 SMDS_VolumeTool::VolumeType SMDS_VolumeTool::GetVolumeType() const
621 // static const VolumeType types[] = {
622 // TETRA, // myVolumeNbNodes = 4
623 // PYRAM, // myVolumeNbNodes = 5
624 // PENTA, // myVolumeNbNodes = 6
625 // UNKNOWN, // myVolumeNbNodes = 7
626 // HEXA // myVolumeNbNodes = 8
628 // return types[ myVolumeNbNodes - 4 ];
629 switch(myVolumeNbNodes) {
630 case 4: return TETRA; break;
631 case 5: return PYRAM; break;
632 case 6: return PENTA; break;
633 case 8: return HEXA; break;
634 case 10: return QUAD_TETRA; break;
635 case 13: return QUAD_PYRAM; break;
636 case 15: return QUAD_PENTA; break;
637 case 20: return QUAD_HEXA; break;
645 //=======================================================================
646 //function : getTetraVolume
648 //=======================================================================
650 static double getTetraVolume(const SMDS_MeshNode* n1,
651 const SMDS_MeshNode* n2,
652 const SMDS_MeshNode* n3,
653 const SMDS_MeshNode* n4)
671 double Q1 = -(X1-X2)*(Y3*Z4-Y4*Z3);
672 double Q2 = (X1-X3)*(Y2*Z4-Y4*Z2);
673 double R1 = -(X1-X4)*(Y2*Z3-Y3*Z2);
674 double R2 = -(X2-X3)*(Y1*Z4-Y4*Z1);
675 double S1 = (X2-X4)*(Y1*Z3-Y3*Z1);
676 double S2 = -(X3-X4)*(Y1*Z2-Y2*Z1);
678 return (Q1+Q2+R1+R2+S1+S2)/6.0;
681 //=======================================================================
683 //purpose : Return element volume
684 //=======================================================================
686 double SMDS_VolumeTool::GetSize() const
692 if ( myVolume->IsPoly() )
697 // split a polyhedron into tetrahedrons
699 SMDS_VolumeTool* me = const_cast< SMDS_VolumeTool* > ( this );
701 me->GetBaryCenter(baryCenter.x, baryCenter.y, baryCenter.z);
702 SMDS_MeshNode bcNode ( baryCenter.x, baryCenter.y, baryCenter.z );
704 for ( int f = 0; f < NbFaces(); ++f )
706 bool externalFace = me->IsFaceExternal( f ); // it calls setFace()
707 for ( int n = 2; n < myFaceNbNodes; ++n )
709 double Vn = getTetraVolume( myFaceNodes[ 0 ],
713 /// cout <<"++++ " << Vn << " nodes " <<myFaceNodes[ 0 ]->GetID() << " " <<myFaceNodes[ n-1 ]->GetID() << " " <<myFaceNodes[ n ]->GetID() << " < " << V << endl;
714 V += externalFace ? -Vn : Vn;
720 const static int ind[] = {
721 0, 1, 3, 6, 11, 19, 32, 46, 66};
722 const static int vtab[][4] = {
739 // quadratic tetrahedron
764 // quadratic pentahedron
781 // quadratic hexahedron
806 int type = GetVolumeType();
808 int n2 = ind[type+1];
810 for (int i = n1; i < n2; i++) {
811 V -= getTetraVolume( myVolumeNodes[ vtab[i][0] ],
812 myVolumeNodes[ vtab[i][1] ],
813 myVolumeNodes[ vtab[i][2] ],
814 myVolumeNodes[ vtab[i][3] ]);
820 //=======================================================================
821 //function : GetBaryCenter
823 //=======================================================================
825 bool SMDS_VolumeTool::GetBaryCenter(double & X, double & Y, double & Z) const
831 for ( int i = 0; i < myVolumeNbNodes; i++ ) {
832 X += myVolumeNodes[ i ]->X();
833 Y += myVolumeNodes[ i ]->Y();
834 Z += myVolumeNodes[ i ]->Z();
836 X /= myVolumeNbNodes;
837 Y /= myVolumeNbNodes;
838 Z /= myVolumeNbNodes;
843 //================================================================================
845 * \brief Classify a point
846 * \param tol - thickness of faces
848 //================================================================================
850 bool SMDS_VolumeTool::IsOut(double X, double Y, double Z, double tol)
852 // LIMITATION: for convex volumes only
854 for ( int iF = 0; iF < myNbFaces; ++iF )
857 if ( !GetFaceNormal( iF, faceNormal.x, faceNormal.y, faceNormal.z ))
859 if ( !IsFaceExternal( iF ))
860 faceNormal = XYZ() - faceNormal; // reverse
862 XYZ face2p( p - XYZ( myFaceNodes[0] ));
863 if ( face2p.Dot( faceNormal ) > tol )
869 //=======================================================================
870 //function : SetExternalNormal
871 //purpose : Node order will be so that faces normals are external
872 //=======================================================================
874 void SMDS_VolumeTool::SetExternalNormal ()
876 myExternalFaces = true;
880 //=======================================================================
881 //function : NbFaceNodes
882 //purpose : Return number of nodes in the array of face nodes
883 //=======================================================================
885 int SMDS_VolumeTool::NbFaceNodes( int faceIndex )
887 if ( !setFace( faceIndex ))
889 return myFaceNbNodes;
892 //=======================================================================
893 //function : GetFaceNodes
894 //purpose : Return pointer to the array of face nodes.
895 // To comfort link iteration, the array
896 // length == NbFaceNodes( faceIndex ) + 1 and
897 // the last node == the first one.
898 //=======================================================================
900 const SMDS_MeshNode** SMDS_VolumeTool::GetFaceNodes( int faceIndex )
902 if ( !setFace( faceIndex ))
907 //=======================================================================
908 //function : GetFaceNodesIndices
909 //purpose : Return pointer to the array of face nodes indices
910 // To comfort link iteration, the array
911 // length == NbFaceNodes( faceIndex ) + 1 and
912 // the last node index == the first one.
913 //=======================================================================
915 const int* SMDS_VolumeTool::GetFaceNodesIndices( int faceIndex )
917 if ( !setFace( faceIndex ))
920 if (myVolume->IsPoly())
922 myPolyIndices.resize( myFaceNbNodes + 1 );
923 myFaceNodeIndices = & myPolyIndices[0];
924 for ( int i = 0; i <= myFaceNbNodes; ++i )
925 myFaceNodeIndices[i] = myVolume->GetNodeIndex( myFaceNodes[i] );
927 return myFaceNodeIndices;
930 //=======================================================================
931 //function : GetFaceNodes
932 //purpose : Return a set of face nodes.
933 //=======================================================================
935 bool SMDS_VolumeTool::GetFaceNodes (int faceIndex,
936 set<const SMDS_MeshNode*>& theFaceNodes )
938 if ( !setFace( faceIndex ))
941 theFaceNodes.clear();
942 int iNode, nbNode = myFaceNbNodes;
943 for ( iNode = 0; iNode < nbNode; iNode++ )
944 theFaceNodes.insert( myFaceNodes[ iNode ]);
949 //=======================================================================
950 //function : IsFaceExternal
951 //purpose : Check normal orientation of a returned face
952 //=======================================================================
954 bool SMDS_VolumeTool::IsFaceExternal( int faceIndex )
956 if ( myExternalFaces || !myVolume )
959 if (myVolume->IsPoly()) {
960 XYZ aNormal, baryCenter, p0 (myPolyedre->GetFaceNode(faceIndex + 1, 1));
961 GetFaceNormal(faceIndex, aNormal.x, aNormal.y, aNormal.z);
962 GetBaryCenter(baryCenter.x, baryCenter.y, baryCenter.z);
963 XYZ insideVec (baryCenter - p0);
964 if (insideVec.Dot(aNormal) > 0)
969 switch ( myVolumeNbNodes ) {
974 // only the bottom of a reversed tetrahedron can be internal
975 return ( myVolForward || faceIndex != 0 );
978 // in a forward pentahedron, the top is internal, in a reversed one - bottom
979 return ( myVolForward ? faceIndex != 1 : faceIndex != 0 );
982 // in a forward hexahedron, even face normal is external, odd - internal
983 bool odd = faceIndex % 2;
984 return ( myVolForward ? !odd : odd );
991 //=======================================================================
992 //function : GetFaceNormal
993 //purpose : Return a normal to a face
994 //=======================================================================
996 bool SMDS_VolumeTool::GetFaceNormal (int faceIndex, double & X, double & Y, double & Z)
998 if ( !setFace( faceIndex ))
1001 XYZ p1 ( myFaceNodes[0] );
1002 XYZ p2 ( myFaceNodes[1] );
1003 XYZ p3 ( myFaceNodes[2] );
1004 XYZ aVec12( p2 - p1 );
1005 XYZ aVec13( p3 - p1 );
1006 XYZ cross = aVec12.Crossed( aVec13 );
1008 //if ( myFaceNbNodes == 4 ) {
1009 if ( myFaceNbNodes >3 ) {
1010 XYZ p4 ( myFaceNodes[3] );
1011 XYZ aVec14( p4 - p1 );
1012 XYZ cross2 = aVec13.Crossed( aVec14 );
1013 cross.x += cross2.x;
1014 cross.y += cross2.y;
1015 cross.z += cross2.z;
1018 double size = cross.Magnitude();
1019 if ( size <= DBL_MIN )
1029 //================================================================================
1031 * \brief Return barycenter of a face
1033 //================================================================================
1035 bool SMDS_VolumeTool::GetFaceBaryCenter (int faceIndex, double & X, double & Y, double & Z)
1037 if ( !setFace( faceIndex ))
1041 for ( int i = 0; i < myFaceNbNodes; ++i )
1043 X += myFaceNodes[i]->X() / myFaceNbNodes;
1044 Y += myFaceNodes[i]->Y() / myFaceNbNodes;
1045 Z += myFaceNodes[i]->Z() / myFaceNbNodes;
1050 //=======================================================================
1051 //function : GetFaceArea
1052 //purpose : Return face area
1053 //=======================================================================
1055 double SMDS_VolumeTool::GetFaceArea( int faceIndex )
1057 if (myVolume->IsPoly()) {
1058 MESSAGE("Warning: attempt to obtain area of a face of polyhedral volume");
1062 if ( !setFace( faceIndex ))
1065 XYZ p1 ( myFaceNodes[0] );
1066 XYZ p2 ( myFaceNodes[1] );
1067 XYZ p3 ( myFaceNodes[2] );
1068 XYZ aVec12( p2 - p1 );
1069 XYZ aVec13( p3 - p1 );
1070 double area = aVec12.Crossed( aVec13 ).Magnitude() * 0.5;
1072 if ( myFaceNbNodes == 4 ) {
1073 XYZ p4 ( myFaceNodes[3] );
1074 XYZ aVec14( p4 - p1 );
1075 area += aVec14.Crossed( aVec13 ).Magnitude() * 0.5;
1080 //=======================================================================
1081 //function : GetOppFaceIndex
1082 //purpose : Return index of the opposite face if it exists, else -1.
1083 //=======================================================================
1085 int SMDS_VolumeTool::GetOppFaceIndex( int faceIndex ) const
1088 if (myVolume->IsPoly()) {
1089 MESSAGE("Warning: attempt to obtain opposite face on polyhedral volume");
1093 if ( faceIndex >= 0 && faceIndex < NbFaces() ) {
1094 switch ( myVolumeNbNodes ) {
1096 if ( faceIndex == 0 || faceIndex == 1 )
1097 ind = 1 - faceIndex;
1100 ind = faceIndex + ( faceIndex % 2 ? -1 : 1 );
1108 //=======================================================================
1109 //function : IsLinked
1110 //purpose : return true if theNode1 is linked with theNode2
1111 // If theIgnoreMediumNodes then corner nodes of quadratic cell are considered linked as well
1112 //=======================================================================
1114 bool SMDS_VolumeTool::IsLinked (const SMDS_MeshNode* theNode1,
1115 const SMDS_MeshNode* theNode2,
1116 const bool theIgnoreMediumNodes) const
1121 if (myVolume->IsPoly()) {
1123 MESSAGE("Warning: bad volumic element");
1126 bool isLinked = false;
1128 for (iface = 1; iface <= myNbFaces && !isLinked; iface++) {
1129 int inode, nbFaceNodes = myPolyedre->NbFaceNodes(iface);
1131 for (inode = 1; inode <= nbFaceNodes && !isLinked; inode++) {
1132 const SMDS_MeshNode* curNode = myPolyedre->GetFaceNode(iface, inode);
1134 if (curNode == theNode1 || curNode == theNode2) {
1135 int inextnode = (inode == nbFaceNodes) ? 1 : inode + 1;
1136 const SMDS_MeshNode* nextNode = myPolyedre->GetFaceNode(iface, inextnode);
1138 if ((curNode == theNode1 && nextNode == theNode2) ||
1139 (curNode == theNode2 && nextNode == theNode1)) {
1148 // find nodes indices
1149 int i1 = -1, i2 = -1;
1150 for ( int i = 0; i < myVolumeNbNodes; i++ ) {
1151 if ( myVolumeNodes[ i ] == theNode1 )
1153 else if ( myVolumeNodes[ i ] == theNode2 )
1156 return IsLinked( i1, i2 );
1159 //=======================================================================
1160 //function : IsLinked
1161 //purpose : return true if the node with theNode1Index is linked
1162 // with the node with theNode2Index
1163 // If theIgnoreMediumNodes then corner nodes of quadratic cell are considered linked as well
1164 //=======================================================================
1166 bool SMDS_VolumeTool::IsLinked (const int theNode1Index,
1167 const int theNode2Index,
1168 bool theIgnoreMediumNodes) const
1170 if ( myVolume->IsPoly() ) {
1171 return IsLinked(myVolumeNodes[theNode1Index], myVolumeNodes[theNode2Index]);
1174 int minInd = min( theNode1Index, theNode2Index );
1175 int maxInd = max( theNode1Index, theNode2Index );
1177 if ( minInd < 0 || maxInd > myVolumeNbNodes - 1 || maxInd == minInd )
1180 SMDSAbs_EntityType type = myVolume->GetEntityType();
1181 if ( myVolume->IsQuadratic() )
1183 int firstMediumInd = myVolume->NbCornerNodes();
1184 if ( minInd >= firstMediumInd )
1185 return false; // medium nodes are not linked
1186 if ( maxInd < firstMediumInd ) // both nodes are corners
1187 if ( theIgnoreMediumNodes )
1188 type = SMDSAbs_EntityType( int(type)-1 ); // check linkage of corner nodes
1190 return false; // corner nodes are not linked directly in a quadratic cell
1194 case SMDSEntity_Tetra:
1196 case SMDSEntity_Hexa:
1197 switch ( maxInd - minInd ) {
1198 case 1: return minInd != 3;
1199 case 3: return minInd == 0 || minInd == 4;
1200 case 4: return true;
1204 case SMDSEntity_Pyramid:
1207 switch ( maxInd - minInd ) {
1209 case 3: return true;
1213 case SMDSEntity_Penta:
1214 switch ( maxInd - minInd ) {
1215 case 1: return minInd != 2;
1216 case 2: return minInd == 0 || minInd == 3;
1217 case 3: return true;
1221 case SMDSEntity_Quad_Tetra:
1224 case 0: if( maxInd==4 || maxInd==6 || maxInd==7 ) return true;
1225 case 1: if( maxInd==4 || maxInd==5 || maxInd==8 ) return true;
1226 case 2: if( maxInd==5 || maxInd==6 || maxInd==9 ) return true;
1227 case 3: if( maxInd==7 || maxInd==8 || maxInd==9 ) return true;
1232 case SMDSEntity_Quad_Hexa:
1235 case 0: if( maxInd==8 || maxInd==11 || maxInd==16 ) return true;
1236 case 1: if( maxInd==8 || maxInd==9 || maxInd==17 ) return true;
1237 case 2: if( maxInd==9 || maxInd==10 || maxInd==18 ) return true;
1238 case 3: if( maxInd==10 || maxInd==11 || maxInd==19 ) return true;
1239 case 4: if( maxInd==12 || maxInd==15 || maxInd==16 ) return true;
1240 case 5: if( maxInd==12 || maxInd==13 || maxInd==17 ) return true;
1241 case 6: if( maxInd==13 || maxInd==14 || maxInd==18 ) return true;
1242 case 7: if( maxInd==14 || maxInd==15 || maxInd==19 ) return true;
1247 case SMDSEntity_Quad_Pyramid:
1250 case 0: if( maxInd==5 || maxInd==8 || maxInd==9 ) return true;
1251 case 1: if( maxInd==5 || maxInd==6 || maxInd==10 ) return true;
1252 case 2: if( maxInd==6 || maxInd==7 || maxInd==11 ) return true;
1253 case 3: if( maxInd==7 || maxInd==8 || maxInd==12 ) return true;
1254 case 4: if( maxInd==9 || maxInd==10 || maxInd==11 || maxInd==12 ) return true;
1259 case SMDSEntity_Quad_Penta:
1262 case 0: if( maxInd==6 || maxInd==8 || maxInd==12 ) return true;
1263 case 1: if( maxInd==6 || maxInd==7 || maxInd==13 ) return true;
1264 case 2: if( maxInd==7 || maxInd==8 || maxInd==14 ) return true;
1265 case 3: if( maxInd==9 || maxInd==11 || maxInd==12 ) return true;
1266 case 4: if( maxInd==9 || maxInd==10 || maxInd==13 ) return true;
1267 case 5: if( maxInd==10 || maxInd==11 || maxInd==14 ) return true;
1277 //=======================================================================
1278 //function : GetNodeIndex
1279 //purpose : Return an index of theNode
1280 //=======================================================================
1282 int SMDS_VolumeTool::GetNodeIndex(const SMDS_MeshNode* theNode) const
1285 for ( int i = 0; i < myVolumeNbNodes; i++ ) {
1286 if ( myVolumeNodes[ i ] == theNode )
1293 //================================================================================
1295 * \brief Fill vector with boundary faces existing in the mesh
1296 * \param faces - vector of found nodes
1297 * \retval int - nb of found faces
1299 //================================================================================
1301 int SMDS_VolumeTool::GetAllExistingFaces(vector<const SMDS_MeshElement*> & faces)
1304 faces.reserve( NbFaces() );
1305 for ( int iF = 0; iF < NbFaces(); ++iF ) {
1306 const SMDS_MeshFace* face = 0;
1307 const SMDS_MeshNode** nodes = GetFaceNodes( iF );
1308 switch ( NbFaceNodes( iF )) {
1310 face = SMDS_Mesh::FindFace( nodes[0], nodes[1], nodes[2] ); break;
1312 face = SMDS_Mesh::FindFace( nodes[0], nodes[1], nodes[2], nodes[3] ); break;
1314 face = SMDS_Mesh::FindFace( nodes[0], nodes[1], nodes[2],
1315 nodes[3], nodes[4], nodes[5]); break;
1317 face = SMDS_Mesh::FindFace( nodes[0], nodes[1], nodes[2], nodes[3],
1318 nodes[4], nodes[5], nodes[6], nodes[7]); break;
1321 faces.push_back( face );
1323 return faces.size();
1327 //================================================================================
1329 * \brief Fill vector with boundary edges existing in the mesh
1330 * \param edges - vector of found edges
1331 * \retval int - nb of found faces
1333 //================================================================================
1335 int SMDS_VolumeTool::GetAllExistingEdges(vector<const SMDS_MeshElement*> & edges) const
1338 edges.reserve( myVolumeNbNodes * 2 );
1339 for ( int i = 0; i < myVolumeNbNodes; ++i ) {
1340 for ( int j = i + 1; j < myVolumeNbNodes; ++j ) {
1341 if ( IsLinked( i, j )) {
1342 const SMDS_MeshElement* edge =
1343 SMDS_Mesh::FindEdge( myVolumeNodes[i], myVolumeNodes[j] );
1345 edges.push_back( edge );
1349 return edges.size();
1352 //=======================================================================
1353 //function : IsFreeFace
1354 //purpose : check that only one volume is build on the face nodes
1355 //=======================================================================
1357 bool SMDS_VolumeTool::IsFreeFace( int faceIndex )
1359 const int free = true;
1361 if (!setFace( faceIndex ))
1364 const SMDS_MeshNode** nodes = GetFaceNodes( faceIndex );
1365 int nbFaceNodes = myFaceNbNodes;
1367 // evaluate nb of face nodes shared by other volume
1368 int maxNbShared = -1;
1369 typedef map< const SMDS_MeshElement*, int > TElemIntMap;
1370 TElemIntMap volNbShared;
1371 TElemIntMap::iterator vNbIt;
1372 for ( int iNode = 0; iNode < nbFaceNodes; iNode++ ) {
1373 const SMDS_MeshNode* n = nodes[ iNode ];
1374 SMDS_ElemIteratorPtr eIt = n->GetInverseElementIterator();
1375 while ( eIt->more() ) {
1376 const SMDS_MeshElement* elem = eIt->next();
1377 if ( elem != myVolume && elem->GetType() == SMDSAbs_Volume ) {
1379 vNbIt = volNbShared.find( elem );
1380 if ( vNbIt == volNbShared.end() ) {
1381 volNbShared.insert ( TElemIntMap::value_type( elem, nbShared ));
1384 nbShared = ++(*vNbIt).second;
1386 if ( nbShared > maxNbShared )
1387 maxNbShared = nbShared;
1391 if ( maxNbShared < 3 )
1392 return free; // is free
1394 // find volumes laying on the opposite side of the face
1395 // and sharing all nodes
1396 XYZ intNormal; // internal normal
1397 GetFaceNormal( faceIndex, intNormal.x, intNormal.y, intNormal.z );
1398 if ( IsFaceExternal( faceIndex ))
1399 intNormal = XYZ( -intNormal.x, -intNormal.y, -intNormal.z );
1400 XYZ p0 ( nodes[0] ), baryCenter;
1401 for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); vNbIt++ ) {
1402 int nbShared = (*vNbIt).second;
1403 if ( nbShared >= 3 ) {
1404 SMDS_VolumeTool volume( (*vNbIt).first );
1405 volume.GetBaryCenter( baryCenter.x, baryCenter.y, baryCenter.z );
1406 XYZ intNormal2( baryCenter - p0 );
1407 if ( intNormal.Dot( intNormal2 ) < 0 )
1408 continue; // opposite side
1410 // remove a volume from volNbShared map
1411 volNbShared.erase( vNbIt-- );
1414 // here volNbShared contains only volumes laying on the
1415 // opposite side of the face
1416 if ( volNbShared.empty() ) {
1417 return free; // is free
1420 // check if the whole area of a face is shared
1421 bool isShared[] = { false, false, false, false }; // 4 triangle parts of a quadrangle
1422 for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); vNbIt++ ) {
1423 SMDS_VolumeTool volume( (*vNbIt).first );
1424 bool prevLinkShared = false;
1425 int nbSharedLinks = 0;
1426 for ( int iNode = 0; iNode < nbFaceNodes; iNode++ ) {
1427 bool linkShared = volume.IsLinked( nodes[ iNode ], nodes[ iNode + 1] );
1430 if ( linkShared && prevLinkShared &&
1431 volume.IsLinked( nodes[ iNode - 1 ], nodes[ iNode + 1] ))
1432 isShared[ iNode ] = true;
1433 prevLinkShared = linkShared;
1435 if ( nbSharedLinks == nbFaceNodes )
1436 return !free; // is not free
1437 if ( nbFaceNodes == 4 ) {
1438 // check traingle parts 1 & 3
1439 if ( isShared[1] && isShared[3] )
1440 return !free; // is not free
1441 // check triangle parts 0 & 2;
1442 // 0 part could not be checked in the loop; check it here
1443 if ( isShared[2] && prevLinkShared &&
1444 volume.IsLinked( nodes[ 0 ], nodes[ 1 ] ) &&
1445 volume.IsLinked( nodes[ 1 ], nodes[ 3 ] ) )
1446 return !free; // is not free
1452 //=======================================================================
1453 //function : GetFaceIndex
1454 //purpose : Return index of a face formed by theFaceNodes
1455 //=======================================================================
1457 int SMDS_VolumeTool::GetFaceIndex( const set<const SMDS_MeshNode*>& theFaceNodes )
1459 for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
1460 const SMDS_MeshNode** nodes = GetFaceNodes( iFace );
1461 int nbFaceNodes = NbFaceNodes( iFace );
1462 set<const SMDS_MeshNode*> nodeSet;
1463 for ( int iNode = 0; iNode < nbFaceNodes; iNode++ )
1464 nodeSet.insert( nodes[ iNode ] );
1465 if ( theFaceNodes == nodeSet )
1471 //=======================================================================
1472 //function : GetFaceIndex
1473 //purpose : Return index of a face formed by theFaceNodes
1474 //=======================================================================
1476 /*int SMDS_VolumeTool::GetFaceIndex( const set<int>& theFaceNodesIndices )
1478 for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
1479 const int* nodes = GetFaceNodesIndices( iFace );
1480 int nbFaceNodes = NbFaceNodes( iFace );
1482 for ( int iNode = 0; iNode < nbFaceNodes; iNode++ )
1483 nodeSet.insert( nodes[ iNode ] );
1484 if ( theFaceNodesIndices == nodeSet )
1490 //=======================================================================
1491 //function : setFace
1493 //=======================================================================
1495 bool SMDS_VolumeTool::setFace( int faceIndex )
1500 if ( myCurFace == faceIndex )
1505 if ( faceIndex < 0 || faceIndex >= NbFaces() )
1508 if (myFaceNodes != NULL) {
1509 delete [] myFaceNodes;
1513 if (myVolume->IsPoly()) {
1515 MESSAGE("Warning: bad volumic element");
1519 // check orientation
1520 bool isGoodOri = true;
1521 if (myExternalFaces)
1522 isGoodOri = IsFaceExternal( faceIndex );
1526 myFaceNbNodes = myPolyedre->NbFaceNodes(faceIndex + 1);
1527 myFaceNodes = new const SMDS_MeshNode* [myFaceNbNodes + 1];
1529 for ( iNode = 0; iNode < myFaceNbNodes; iNode++ )
1530 myFaceNodes[ iNode ] = myPolyedre->GetFaceNode(faceIndex + 1, iNode + 1);
1532 for ( iNode = 0; iNode < myFaceNbNodes; iNode++ )
1533 myFaceNodes[ iNode ] = myPolyedre->GetFaceNode(faceIndex + 1, myFaceNbNodes - iNode);
1535 myFaceNodes[ myFaceNbNodes ] = myFaceNodes[ 0 ]; // last = first
1539 // choose face node indices
1540 switch ( myVolumeNbNodes ) {
1542 myFaceNbNodes = Tetra_nbN[ faceIndex ];
1543 if ( myExternalFaces )
1544 myFaceNodeIndices = myVolForward ? Tetra_F[ faceIndex ] : Tetra_RE[ faceIndex ];
1546 myFaceNodeIndices = myVolForward ? Tetra_F[ faceIndex ] : Tetra_R[ faceIndex ];
1549 myFaceNbNodes = Pyramid_nbN[ faceIndex ];
1550 if ( myExternalFaces )
1551 myFaceNodeIndices = myVolForward ? Pyramid_F[ faceIndex ] : Pyramid_RE[ faceIndex ];
1553 myFaceNodeIndices = myVolForward ? Pyramid_F[ faceIndex ] : Pyramid_R[ faceIndex ];
1556 myFaceNbNodes = Penta_nbN[ faceIndex ];
1557 if ( myExternalFaces )
1558 myFaceNodeIndices = myVolForward ? Penta_FE[ faceIndex ] : Penta_RE[ faceIndex ];
1560 myFaceNodeIndices = myVolForward ? Penta_F[ faceIndex ] : Penta_R[ faceIndex ];
1563 myFaceNbNodes = Hexa_nbN[ faceIndex ];
1564 if ( myExternalFaces )
1565 myFaceNodeIndices = myVolForward ? Hexa_FE[ faceIndex ] : Hexa_RE[ faceIndex ];
1567 myFaceNodeIndices = Hexa_F[ faceIndex ];
1570 myFaceNbNodes = QuadTetra_nbN[ faceIndex ];
1571 if ( myExternalFaces )
1572 myFaceNodeIndices = myVolForward ? QuadTetra_F[ faceIndex ] : QuadTetra_RE[ faceIndex ];
1574 myFaceNodeIndices = myVolForward ? QuadTetra_F[ faceIndex ] : QuadTetra_R[ faceIndex ];
1577 myFaceNbNodes = QuadPyram_nbN[ faceIndex ];
1578 if ( myExternalFaces )
1579 myFaceNodeIndices = myVolForward ? QuadPyram_F[ faceIndex ] : QuadPyram_RE[ faceIndex ];
1581 myFaceNodeIndices = myVolForward ? QuadPyram_F[ faceIndex ] : QuadPyram_R[ faceIndex ];
1584 myFaceNbNodes = QuadPenta_nbN[ faceIndex ];
1585 if ( myExternalFaces )
1586 myFaceNodeIndices = myVolForward ? QuadPenta_FE[ faceIndex ] : QuadPenta_RE[ faceIndex ];
1588 myFaceNodeIndices = myVolForward ? QuadPenta_F[ faceIndex ] : QuadPenta_R[ faceIndex ];
1591 myFaceNbNodes = QuadHexa_nbN[ faceIndex ];
1592 if ( myExternalFaces )
1593 myFaceNodeIndices = myVolForward ? QuadHexa_FE[ faceIndex ] : QuadHexa_RE[ faceIndex ];
1595 myFaceNodeIndices = QuadHexa_F[ faceIndex ];
1602 myFaceNodes = new const SMDS_MeshNode* [myFaceNbNodes + 1];
1603 for ( int iNode = 0; iNode < myFaceNbNodes; iNode++ )
1604 myFaceNodes[ iNode ] = myVolumeNodes[ myFaceNodeIndices[ iNode ]];
1605 myFaceNodes[ myFaceNbNodes ] = myFaceNodes[ 0 ];
1608 myCurFace = faceIndex;
1613 //=======================================================================
1614 //function : GetType
1615 //purpose : return VolumeType by nb of nodes in a volume
1616 //=======================================================================
1618 SMDS_VolumeTool::VolumeType SMDS_VolumeTool::GetType(int nbNodes)
1620 switch ( nbNodes ) {
1621 case 4: return TETRA;
1622 case 5: return PYRAM;
1623 case 6: return PENTA;
1624 case 8: return HEXA;
1625 case 10: return QUAD_TETRA;
1626 case 13: return QUAD_PYRAM;
1627 case 15: return QUAD_PENTA;
1628 case 20: return QUAD_HEXA;
1629 default:return UNKNOWN;
1633 //=======================================================================
1634 //function : NbFaces
1635 //purpose : return nb of faces by volume type
1636 //=======================================================================
1638 int SMDS_VolumeTool::NbFaces( VolumeType type )
1642 case QUAD_TETRA: return 4;
1644 case QUAD_PYRAM: return 5;
1646 case QUAD_PENTA: return 5;
1648 case QUAD_HEXA : return 6;
1653 //================================================================================
1655 * \brief Useful to know nb of corner nodes of a quadratic volume
1656 * \param type - volume type
1657 * \retval int - nb of corner nodes
1659 //================================================================================
1661 int SMDS_VolumeTool::NbCornerNodes(VolumeType type)
1665 case QUAD_TETRA: return 4;
1667 case QUAD_PYRAM: return 5;
1669 case QUAD_PENTA: return 6;
1671 case QUAD_HEXA : return 8;
1678 //=======================================================================
1679 //function : GetFaceNodesIndices
1680 //purpose : Return the array of face nodes indices
1681 // To comfort link iteration, the array
1682 // length == NbFaceNodes( faceIndex ) + 1 and
1683 // the last node index == the first one.
1684 //=======================================================================
1686 const int* SMDS_VolumeTool::GetFaceNodesIndices(VolumeType type,
1691 case TETRA: return Tetra_F[ faceIndex ];
1692 case PYRAM: return Pyramid_F[ faceIndex ];
1693 case PENTA: return external ? Penta_FE[ faceIndex ] : Penta_F[ faceIndex ];
1694 case HEXA: return external ? Hexa_FE[ faceIndex ] : Hexa_F[ faceIndex ];
1695 case QUAD_TETRA: return QuadTetra_F[ faceIndex ];
1696 case QUAD_PYRAM: return QuadPyram_F[ faceIndex ];
1697 case QUAD_PENTA: return external ? QuadPenta_FE[ faceIndex ] : QuadPenta_F[ faceIndex ];
1698 case QUAD_HEXA: return external ? QuadHexa_FE[ faceIndex ] : QuadHexa_F[ faceIndex ];
1704 //=======================================================================
1705 //function : NbFaceNodes
1706 //purpose : Return number of nodes in the array of face nodes
1707 //=======================================================================
1709 int SMDS_VolumeTool::NbFaceNodes(VolumeType type,
1713 case TETRA: return Tetra_nbN[ faceIndex ];
1714 case PYRAM: return Pyramid_nbN[ faceIndex ];
1715 case PENTA: return Penta_nbN[ faceIndex ];
1716 case HEXA: return Hexa_nbN[ faceIndex ];
1717 case QUAD_TETRA: return QuadTetra_nbN[ faceIndex ];
1718 case QUAD_PYRAM: return QuadPyram_nbN[ faceIndex ];
1719 case QUAD_PENTA: return QuadPenta_nbN[ faceIndex ];
1720 case QUAD_HEXA: return QuadHexa_nbN[ faceIndex ];
1726 //=======================================================================
1728 //purpose : return element
1729 //=======================================================================
1731 const SMDS_MeshVolume* SMDS_VolumeTool::Element() const
1733 return static_cast<const SMDS_MeshVolume*>( myVolume );
1736 //=======================================================================
1738 //purpose : return element ID
1739 //=======================================================================
1741 int SMDS_VolumeTool::ID() const
1743 return myVolume ? myVolume->GetID() : 0;