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smesh/src/SMDS/SMDS_VolumeTool.cxx

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// Copyright (C) 2005 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
//
// 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.
//
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//
// File : SMDS_VolumeTool.cxx
// Created : Tue Jul 13 12:22:13 2004
// Author : Edward AGAPOV (eap)
// Copyright : Open CASCADE
#ifdef _MSC_VER
#pragma warning(disable:4786)
#endif
#include "SMDS_VolumeTool.hxx"
#include "SMDS_MeshElement.hxx"
#include "SMDS_MeshNode.hxx"
#include "SMDS_PolyhedralVolumeOfNodes.hxx"
#include "utilities.h"
#include <map>
#include <float.h>
#include <math.h>
using namespace std;
// ======================================================
// Node indices in faces depending on volume orientation
// making most faces normals external
// ======================================================
/*
// N3
// +
// /|\
// / | \
// / | \
// N0 +---|---+ N1 TETRAHEDRON
// \ | /
// \ | /
// \ | /
// \|/
// +
// N2
*/
static int Tetra_F [4][4] = { // FORWARD == EXTERNAL
{ 0, 1, 2, 0 }, // All faces have external normals
{ 0, 3, 1, 0 },
{ 1, 3, 2, 1 },
{ 0, 2, 3, 0 }};
static int Tetra_R [4][4] = { // REVERSED
{ 0, 1, 2, 0 }, // All faces but a bottom have external normals
{ 0, 1, 3, 0 },
{ 1, 2, 3, 1 },
{ 0, 3, 2, 0 }};
static int Tetra_RE [4][4] = { // REVERSED -> FORWARD (EXTERNAL)
{ 0, 2, 1, 0 }, // All faces have external normals
{ 0, 1, 3, 0 },
{ 1, 2, 3, 1 },
{ 0, 3, 2, 0 }};
static int Tetra_nbN [] = { 3, 3, 3, 3 };
//
// PYRAMID
//
static int Pyramid_F [5][5] = { // FORWARD == EXTERNAL
{ 0, 1, 2, 3, 0 }, // All faces have external normals
{ 0, 4, 1, 0, 4 },
{ 1, 4, 2, 1, 4 },
{ 2, 4, 3, 2, 4 },
{ 3, 4, 0, 3, 4 }};
static int Pyramid_R [5][5] = { // REVERSED
{ 0, 1, 2, 3, 0 }, // All faces but a bottom have external normals
{ 0, 1, 4, 0, 4 },
{ 1, 2, 4, 1, 4 },
{ 2, 3, 4, 2, 4 },
{ 3, 0, 4, 3, 4 }};
static int Pyramid_RE [5][5] = { // REVERSED -> FORWARD (EXTERNAL)
{ 0, 3, 2, 1, 0 }, // All faces but a bottom have external normals
{ 0, 1, 4, 0, 4 },
{ 1, 2, 4, 1, 4 },
{ 2, 3, 4, 2, 4 },
{ 3, 0, 4, 3, 4 }};
static int Pyramid_nbN [] = { 4, 3, 3, 3, 3 };
/*
// + N4
// /|\
// / | \
// / | \
// / | \
// N3 +---------+ N5
// | | |
// | + N1 |
// | / \ | PENTAHEDRON
// | / \ |
// | / \ |
// |/ \|
// N0 +---------+ N2
*/
static int Penta_F [5][5] = { // FORWARD
{ 0, 1, 2, 0, 0 }, // Top face has an internal normal, other - external
{ 3, 4, 5, 3, 3 }, // 0 is bottom, 1 is top face
{ 0, 2, 5, 3, 0 },
{ 1, 4, 5, 2, 1 },
{ 0, 3, 4, 1, 0 }};
static int Penta_R [5][5] = { // REVERSED
{ 0, 1, 2, 0, 0 }, // Bottom face has an internal normal, other - external
{ 3, 4, 5, 3, 3 }, // 0 is bottom, 1 is top face
{ 0, 3, 5, 2, 0 },
{ 1, 2, 5, 4, 1 },
{ 0, 1, 4, 3, 0 }};
static int Penta_FE [5][5] = { // FORWARD -> EXTERNAL
{ 0, 1, 2, 0, 0 },
{ 3, 5, 4, 3, 3 },
{ 0, 2, 5, 3, 0 },
{ 1, 4, 5, 2, 1 },
{ 0, 3, 4, 1, 0 }};
static int Penta_RE [5][5] = { // REVERSED -> EXTERNAL
{ 0, 2, 1, 0, 0 },
{ 3, 4, 5, 3, 3 },
{ 0, 3, 5, 2, 0 },
{ 1, 2, 5, 4, 1 },
{ 0, 1, 4, 3, 0 }};
static int Penta_nbN [] = { 3, 3, 4, 4, 4 };
/*
// N5+----------+N6
// /| /|
// / | / |
// / | / |
// N4+----------+N7 |
// | | | | HEXAHEDRON
// | | | |
// | | | |
// | N1+------|---+N2
// | / | /
// | / | /
// |/ |/
// N0+----------+N3
*/
static int Hexa_F [6][5] = { // FORWARD
{ 0, 1, 2, 3, 0 }, // opposite faces are neighbouring,
{ 4, 5, 6, 7, 4 }, // odd face(1,3,5) normal is internal, even(0,2,4) - external
{ 1, 0, 4, 5, 1 }, // same index nodes of opposite faces are linked
{ 2, 3, 7, 6, 2 },
{ 0, 3, 7, 4, 0 },
{ 1, 2, 6, 5, 1 }};
// static int Hexa_R [6][5] = { // REVERSED
// { 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
// { 4, 7, 6, 5, 4 }, // odd face(1,3,5) normal is external, even(0,2,4) - internal
// { 1, 5, 4, 0, 1 }, // same index nodes of opposite faces are linked
// { 2, 6, 7, 3, 2 },
// { 0, 4, 7, 3, 0 },
// { 1, 5, 6, 2, 1 }};
static int Hexa_FE [6][5] = { // FORWARD -> EXTERNAL
{ 0, 1, 2, 3, 0 } , // opposite faces are neighbouring,
{ 4, 7, 6, 5, 4 }, // all face normals are external,
{ 0, 4, 5, 1, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
{ 3, 2, 6, 7, 3 },
{ 0, 3, 7, 4, 0 },
{ 1, 5, 6, 2, 1 }};
static int Hexa_RE [6][5] = { // REVERSED -> EXTERNAL
{ 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
{ 4, 5, 6, 7, 4 }, // all face normals are external,
{ 0, 1, 5, 4, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
{ 3, 7, 6, 2, 3 },
{ 0, 4, 7, 3, 0 },
{ 1, 2, 6, 5, 1 }};
static int Hexa_nbN [] = { 4, 4, 4, 4, 4, 4 };
/*
// N3
// +
// /|\
// 7/ | \8
// / |4 \ QUADRATIC
// N0 +---|---+ N1 TETRAHEDRON
// \ +9 /
// \ | /
// 6\ | /5
// \|/
// +
// N2
*/
static int QuadTetra_F [4][7] = { // FORWARD == EXTERNAL
{ 0, 4, 1, 5, 2, 6, 0 }, // All faces have external normals
{ 0, 7, 3, 8, 1, 4, 0 },
{ 1, 8, 3, 9, 2, 5, 1 },
{ 0, 6, 2, 9, 3, 7, 0 }};
static int QuadTetra_R [4][7] = { // REVERSED
{ 0, 4, 1, 5, 2, 6, 0 }, // All faces but a bottom have external normals
{ 0, 4, 1, 8, 3, 7, 0 },
{ 1, 5, 2, 9, 3, 8, 1 },
{ 0, 7, 3, 9, 2, 6, 0 }};
static int QuadTetra_RE [4][7] = { // REVERSED -> FORWARD (EXTERNAL)
{ 0, 6, 2, 5, 1, 4, 0 }, // All faces have external normals
{ 0, 4, 1, 8, 3, 7, 0 },
{ 1, 5, 2, 9, 3, 8, 1 },
{ 0, 7, 3, 9, 2, 6, 0 }};
static int QuadTetra_nbN [] = { 6, 6, 6, 6 };
//
// QUADRATIC
// PYRAMID
//
// +4
//
//
// 10+-----+11
// | | 9 - middle point for (0,4) etc.
// | |
// 9+-----+12
//
// 6
// 1+----+----+2
// | |
// | |
// 5+ +7
// | |
// | |
// 0+----+----+3
// 8
static int QuadPyram_F [5][9] = { // FORWARD == EXTERNAL
{ 0, 5, 1, 6, 2, 7, 3, 8, 0 }, // All faces have external normals
{ 0, 9, 4, 10,1, 5, 0, 4, 4 },
{ 1, 10,4, 11,2, 6, 1, 4, 4 },
{ 2, 11,4, 12,3, 7, 2, 4, 4 },
{ 3, 12,4, 9, 0, 8, 3, 4, 4 }};
static int QuadPyram_R [5][9] = { // REVERSED
{ 0, 5, 1, 6, 2, 7, 3, 8, 0 }, // All faces but a bottom have external normals
{ 0, 5, 1, 10,4, 9, 0, 4, 4 },
{ 1, 6, 2, 11,4, 10,1, 4, 4 },
{ 2, 7, 3, 12,4, 11,2, 4, 4 },
{ 3, 8, 0, 9, 4, 12,3, 4, 4 }};
static int QuadPyram_RE [5][9] = { // REVERSED -> FORWARD (EXTERNAL)
{ 0, 8, 3, 7, 2, 6, 1, 5, 0 }, // All faces but a bottom have external normals
{ 0, 5, 1, 10,4, 9, 0, 4, 4 },
{ 1, 6, 2, 11,4, 10,1, 4, 4 },
{ 2, 7, 3, 12,4, 11,2, 4, 4 },
{ 3, 8, 0, 9, 4, 12,3, 4, 4 }};
static int QuadPyram_nbN [] = { 8, 6, 6, 6, 6 };
/*
// + N4
// /|\
// 9/ | \10
// / | \
// / | \
// N3 +----+----+ N5
// | |11 |
// | | |
// | +13 | QUADRATIC
// | | | PENTAHEDRON
// | | |
// | | |
// | | |
// 12+ | +14
// | | |
// | | |
// | + N1 |
// | / \ |
// | 6/ \7 |
// | / \ |
// |/ \|
// N0 +---------+ N2
// 8
*/
static int QuadPenta_F [5][9] = { // FORWARD
{ 0, 6, 1, 7, 2, 8, 0, 0, 0 }, // Top face has an internal normal, other - external
{ 3, 9, 4, 10,5, 11,3, 3, 3 }, // 0 is bottom, 1 is top face
{ 0, 8, 2, 14,5, 11,3, 12,0 },
{ 1, 13,4, 10,5, 14,2, 7, 1 },
{ 0, 12,3, 9, 4, 13,1, 6, 0 }};
static int QuadPenta_R [5][9] = { // REVERSED
{ 0, 6, 1, 7, 2, 8, 0, 0, 0 }, // Bottom face has an internal normal, other - external
{ 3, 9, 4, 10,5, 11,3, 3, 3 }, // 0 is bottom, 1 is top face
{ 0, 12,3, 11,5, 14,2, 8, 0 },
{ 1, 7, 2, 14,5, 10,4, 13,1 },
{ 0, 6, 1, 13,4, 9, 3, 12,0 }};
static int QuadPenta_FE [5][9] = { // FORWARD -> EXTERNAL
{ 0, 6, 1, 7, 2, 8, 0, 0, 0 },
{ 3,11, 5, 10,4, 9, 3, 3, 3 },
{ 0, 8, 2, 14,5, 11,3, 12,0 },
{ 1, 13,4, 10,5, 14,2, 7, 1 },
{ 0, 12,3, 9, 4, 13,1, 6, 0 }};
static int QuadPenta_RE [5][9] = { // REVERSED -> EXTERNAL
{ 0, 8, 2, 7, 1, 6, 0, 0, 0 },
{ 3, 9, 4, 10,5, 11,3, 3, 3 },
{ 0, 12,3, 11,5, 14,2, 8, 0 },
{ 1, 7, 2, 14,5, 10,4, 13,1 },
{ 0, 6, 1, 13,4, 9, 3, 12,0 }};
static int QuadPenta_nbN [] = { 6, 6, 8, 8, 8 };
/*
// 13
// N5+-----+-----+N6
// /| /|
// 12+ | 14+ |
// / | / |
// N4+-----+-----+N7 | QUADRATIC
// | | 15 | | HEXAHEDRON
// | | | |
// | 17+ | +18
// | | | |
// | | | |
// | | | |
// 16+ | +19 |
// | | | |
// | | 9 | |
// | N1+-----+-|---+N2
// | / | /
// | +8 | +10
// |/ |/
// N0+-----+-----+N3
// 11
*/
static int QuadHexa_F [6][9] = { // FORWARD
{ 0, 8, 1, 9, 2, 10,3, 11,0 }, // opposite faces are neighbouring,
{ 4, 12,5, 13,6, 14,7, 15,4 }, // odd face(1,3,5) normal is internal, even(0,2,4) - external
{ 1, 8, 0, 16,4, 12,5, 17,1 }, // same index nodes of opposite faces are linked
{ 2, 10,3, 19,7, 14,6, 18,2 },
{ 0, 11,3, 19,7, 15,4, 16,0 },
{ 1, 9, 2, 18,6, 13,5, 17,1 }};
// static int Hexa_R [6][5] = { // REVERSED
// { 0, 3, 2, 1, 0 }, // opposite faces are neighbouring,
// { 4, 7, 6, 5, 4 }, // odd face(1,3,5) normal is external, even(0,2,4) - internal
// { 1, 5, 4, 0, 1 }, // same index nodes of opposite faces are linked
// { 2, 6, 7, 3, 2 },
// { 0, 4, 7, 3, 0 },
// { 1, 5, 6, 2, 1 }};
static int QuadHexa_FE [6][9] = { // FORWARD -> EXTERNAL
{ 0, 8, 1, 9, 2, 10,3, 11,0 }, // opposite faces are neighbouring,
{ 4, 15,7, 14,6, 13,5, 12,4 }, // all face normals are external,
{ 0, 16,4, 12,5, 17,1, 8, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
{ 3, 10,2, 18,6, 14,7, 19,3 },
{ 0, 11,3, 19,7, 15,4, 16,0 },
{ 1, 17,5, 13,6, 18,2, 9, 1 }};
static int QuadHexa_RE [6][9] = { // REVERSED -> EXTERNAL
{ 0, 11,3, 10,2, 9, 1, 8, 0 }, // opposite faces are neighbouring,
{ 4, 12,5, 13,6, 14,7, 15,4 }, // all face normals are external,
{ 0, 8, 1, 17,5, 12,4, 16,0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
{ 3, 19,7, 14,6, 18,2, 10,3 },
{ 0, 16,4, 15,7, 19,3, 11,0 },
{ 1, 9, 2, 18,6, 13,5, 17,1 }};
static int QuadHexa_nbN [] = { 8, 8, 8, 8, 8, 8 };
// ========================================================
// to perform some calculations without linkage to CASCADE
// ========================================================
struct XYZ {
double x;
double y;
double z;
XYZ() { x = 0; y = 0; z = 0; }
XYZ( double X, double Y, double Z ) { x = X; y = Y; z = Z; }
XYZ( const XYZ& other ) { x = other.x; y = other.y; z = other.z; }
XYZ( const SMDS_MeshNode* n ) { x = n->X(); y = n->Y(); z = n->Z(); }
XYZ operator-( const XYZ& other );
XYZ Crossed( const XYZ& other );
double Dot( const XYZ& other );
double Magnitude();
};
XYZ XYZ::operator-( const XYZ& Right ) {
return XYZ(x - Right.x, y - Right.y, z - Right.z);
}
XYZ XYZ::Crossed( const XYZ& Right ) {
return XYZ (y * Right.z - z * Right.y,
z * Right.x - x * Right.z,
x * Right.y - y * Right.x);
}
double XYZ::Dot( const XYZ& Other ) {
return(x * Other.x + y * Other.y + z * Other.z);
}
double XYZ::Magnitude() {
return sqrt (x * x + y * y + z * z);
}
//=======================================================================
//function : SMDS_VolumeTool
//purpose :
//=======================================================================
SMDS_VolumeTool::SMDS_VolumeTool ()
: myVolume( 0 ),
myPolyedre( 0 ),
myVolForward( true ),
myNbFaces( 0 ),
myVolumeNbNodes( 0 ),
myVolumeNodes( NULL ),
myExternalFaces( false ),
myFaceNbNodes( 0 ),
myCurFace( -1 ),
myFaceNodeIndices( NULL ),
myFaceNodes( NULL )
{
}
//=======================================================================
//function : SMDS_VolumeTool
//purpose :
//=======================================================================
SMDS_VolumeTool::SMDS_VolumeTool (const SMDS_MeshElement* theVolume)
: myVolume( 0 ),
myPolyedre( 0 ),
myVolForward( true ),
myNbFaces( 0 ),
myVolumeNbNodes( 0 ),
myVolumeNodes( NULL ),
myExternalFaces( false ),
myFaceNbNodes( 0 ),
myCurFace( -1 ),
myFaceNodeIndices( NULL ),
myFaceNodes( NULL )
{
Set( theVolume );
}
//=======================================================================
//function : SMDS_VolumeTool
//purpose :
//=======================================================================
SMDS_VolumeTool::~SMDS_VolumeTool()
{
if (myVolumeNodes != NULL) {
delete [] myVolumeNodes;
myVolumeNodes = NULL;
}
if (myFaceNodes != NULL) {
delete [] myFaceNodes;
myFaceNodes = NULL;
}
}
//=======================================================================
//function : SetVolume
//purpose : Set volume to iterate on
//=======================================================================
bool SMDS_VolumeTool::Set (const SMDS_MeshElement* theVolume)
{
myVolume = 0;
myPolyedre = 0;
myVolForward = true;
myNbFaces = 0;
myVolumeNbNodes = 0;
if (myVolumeNodes != NULL) {
delete [] myVolumeNodes;
myVolumeNodes = NULL;
}
myExternalFaces = false;
myFaceNbNodes = 0;
myCurFace = -1;
myFaceNodeIndices = NULL;
if (myFaceNodes != NULL) {
delete [] myFaceNodes;
myFaceNodes = NULL;
}
if ( theVolume && theVolume->GetType() == SMDSAbs_Volume )
{
myVolume = theVolume;
myNbFaces = theVolume->NbFaces();
myVolumeNbNodes = theVolume->NbNodes();
// set volume nodes
int iNode = 0;
myVolumeNodes = new const SMDS_MeshNode* [myVolumeNbNodes];
SMDS_ElemIteratorPtr nodeIt = myVolume->nodesIterator();
while ( nodeIt->more() ) {
myVolumeNodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
}
if (myVolume->IsPoly()) {
myPolyedre = static_cast<const SMDS_PolyhedralVolumeOfNodes*>( myVolume );
if (!myPolyedre) {
MESSAGE("Warning: bad volumic element");
return false;
}
}
else {
switch ( myVolumeNbNodes ) {
case 4:
case 5:
case 6:
case 8:
case 10:
case 13:
case 15:
case 20: {
// define volume orientation
XYZ botNormal;
GetFaceNormal( 0, botNormal.x, botNormal.y, botNormal.z );
const SMDS_MeshNode* topNode = myVolumeNodes[ myVolumeNbNodes - 1 ];
const SMDS_MeshNode* botNode = myVolumeNodes[ 0 ];
XYZ upDir (topNode->X() - botNode->X(),
topNode->Y() - botNode->Y(),
topNode->Z() - botNode->Z() );
myVolForward = ( botNormal.Dot( upDir ) < 0 );
break;
}
default:
break;
}
}
}
return ( myVolume != 0 );
}
//=======================================================================
//function : Inverse
//purpose : Inverse volume
//=======================================================================
#define SWAP_NODES(nodes,i1,i2) \
{ \
const SMDS_MeshNode* tmp = nodes[ i1 ]; \
nodes[ i1 ] = nodes[ i2 ]; \
nodes[ i2 ] = tmp; \
}
void SMDS_VolumeTool::Inverse ()
{
if ( !myVolume ) return;
if (myVolume->IsPoly()) {
MESSAGE("Warning: attempt to inverse polyhedral volume");
return;
}
myVolForward = !myVolForward;
myCurFace = -1;
// inverse top and bottom faces
switch ( myVolumeNbNodes ) {
case 4:
SWAP_NODES( myVolumeNodes, 1, 2 );
break;
case 5:
SWAP_NODES( myVolumeNodes, 1, 3 );
break;
case 6:
SWAP_NODES( myVolumeNodes, 1, 2 );
SWAP_NODES( myVolumeNodes, 4, 5 );
break;
case 8:
SWAP_NODES( myVolumeNodes, 1, 3 );
SWAP_NODES( myVolumeNodes, 5, 7 );
break;
case 10:
SWAP_NODES( myVolumeNodes, 1, 2 );
SWAP_NODES( myVolumeNodes, 4, 6 );
SWAP_NODES( myVolumeNodes, 8, 9 );
break;
case 13:
SWAP_NODES( myVolumeNodes, 1, 3 );
SWAP_NODES( myVolumeNodes, 5, 8 );
SWAP_NODES( myVolumeNodes, 6, 7 );
SWAP_NODES( myVolumeNodes, 10, 12 );
break;
case 15:
SWAP_NODES( myVolumeNodes, 1, 2 );
SWAP_NODES( myVolumeNodes, 4, 5 );
SWAP_NODES( myVolumeNodes, 6, 8 );
SWAP_NODES( myVolumeNodes, 9, 11 );
SWAP_NODES( myVolumeNodes, 13, 14 );
break;
case 20:
SWAP_NODES( myVolumeNodes, 1, 3 );
SWAP_NODES( myVolumeNodes, 5, 7 );
SWAP_NODES( myVolumeNodes, 8, 11 );
SWAP_NODES( myVolumeNodes, 9, 10 );
SWAP_NODES( myVolumeNodes, 12, 15 );
SWAP_NODES( myVolumeNodes, 13, 14 );
SWAP_NODES( myVolumeNodes, 17, 19 );
break;
default:;
}
}
//=======================================================================
//function : GetVolumeType
//purpose :
//=======================================================================
SMDS_VolumeTool::VolumeType SMDS_VolumeTool::GetVolumeType() const
{
if ( myPolyedre )
return POLYHEDA;
if ( myVolume ) {
// static const VolumeType types[] = {
// TETRA, // myVolumeNbNodes = 4
// PYRAM, // myVolumeNbNodes = 5
// PENTA, // myVolumeNbNodes = 6
// UNKNOWN, // myVolumeNbNodes = 7
// HEXA // myVolumeNbNodes = 8
// };
// return types[ myVolumeNbNodes - 4 ];
switch(myVolumeNbNodes) {
case 4: return TETRA; break;
case 5: return PYRAM; break;
case 6: return PENTA; break;
case 8: return HEXA; break;
case 10: return QUAD_TETRA; break;
case 13: return QUAD_PYRAM; break;
case 15: return QUAD_PENTA; break;
case 20: return QUAD_HEXA; break;
default: break;
}
}
return UNKNOWN;
}
//=======================================================================
//function : getTetraVolume
//purpose :
//=======================================================================
static double getTetraVolume(const SMDS_MeshNode* n1,
const SMDS_MeshNode* n2,
const SMDS_MeshNode* n3,
const SMDS_MeshNode* n4)
{
double X1 = n1->X();
double Y1 = n1->Y();
double Z1 = n1->Z();
double X2 = n2->X();
double Y2 = n2->Y();
double Z2 = n2->Z();
double X3 = n3->X();
double Y3 = n3->Y();
double Z3 = n3->Z();
double X4 = n4->X();
double Y4 = n4->Y();
double Z4 = n4->Z();
double Q1 = -(X1-X2)*(Y3*Z4-Y4*Z3);
double Q2 = (X1-X3)*(Y2*Z4-Y4*Z2);
double R1 = -(X1-X4)*(Y2*Z3-Y3*Z2);
double R2 = -(X2-X3)*(Y1*Z4-Y4*Z1);
double S1 = (X2-X4)*(Y1*Z3-Y3*Z1);
double S2 = -(X3-X4)*(Y1*Z2-Y2*Z1);
return (Q1+Q2+R1+R2+S1+S2)/6.0;
}
//=======================================================================
//function : GetSize
//purpose : Return element volume
//=======================================================================
double SMDS_VolumeTool::GetSize() const
{
double V = 0.;
if ( !myVolume )
return 0.;
if ( myVolume->IsPoly() )
{
if ( !myPolyedre )
return 0.;
// split a polyhedron into tetrahedrons
SMDS_VolumeTool* me = const_cast< SMDS_VolumeTool* > ( this );
XYZ baryCenter;
me->GetBaryCenter(baryCenter.x, baryCenter.y, baryCenter.z);
SMDS_MeshNode bcNode ( baryCenter.x, baryCenter.y, baryCenter.z );
for ( int f = 0; f < NbFaces(); ++f )
{
bool externalFace = me->IsFaceExternal( f ); // it calls setFace()
for ( int n = 2; n < myFaceNbNodes; ++n )
{
double Vn = getTetraVolume( myFaceNodes[ 0 ],
myFaceNodes[ n-1 ],
myFaceNodes[ n ],
& bcNode );
/// cout <<"++++ " << Vn << " nodes " <<myFaceNodes[ 0 ]->GetID() << " " <<myFaceNodes[ n-1 ]->GetID() << " " <<myFaceNodes[ n ]->GetID() << " < " << V << endl;
V += externalFace ? -Vn : Vn;
}
}
}
else
{
const static int ind[] = {
0, 1, 3, 6, 11, 19, 32, 46, 66};
const static int vtab[][4] = {
// tetrahedron
{ 0, 1, 2, 3 },
// pyramid
{ 0, 1, 3, 4 },
{ 1, 2, 3, 4 },
// pentahedron
{ 0, 1, 2, 3 },
{ 1, 5, 3, 4 },
{ 1, 5, 2, 3 },
// hexahedron
{ 1, 4, 3, 0 },
{ 4, 1, 6, 5 },
{ 1, 3, 6, 2 },
{ 4, 6, 3, 7 },
{ 1, 4, 6, 3 },
// quadratic tetrahedron
{ 0, 4, 6, 7 },
{ 1, 5, 4, 8 },
{ 2, 6, 5, 9 },
{ 7, 8, 9, 3 },
{ 4, 6, 7, 9 },
{ 4, 5, 6, 9 },
{ 4, 7, 8, 9 },
{ 4, 5, 9, 8 },
// quadratic pyramid
{ 0, 5, 8, 9 },
{ 1, 5,10, 6 },
{ 2, 6,11, 7 },
{ 3, 7,12, 8 },
{ 4, 9,11,10 },
{ 4, 9,12,11 },
{ 10, 5, 9, 8 },
{ 10, 8, 9,12 },
{ 10, 8,12, 7 },
{ 10, 7,12,11 },
{ 10, 7,11, 6 },
{ 10, 5, 8, 6 },
{ 10, 6, 8, 7 },
// quadratic pentahedron
{ 12, 0, 8, 6 },
{ 12, 8, 7, 6 },
{ 12, 8, 2, 7 },
{ 12, 6, 7, 1 },
{ 12, 1, 7,13 },
{ 12, 7, 2,13 },
{ 12, 2,14,13 },
{ 12, 3, 9,11 },
{ 12,11, 9,10 },
{ 12,11,10, 5 },
{ 12, 9, 4,10 },
{ 12,14, 5,10 },
{ 12,14,10, 4 },
{ 12,14, 4,13 },
// quadratic hexahedron
{ 16, 0,11, 8 },
{ 16,11, 9, 8 },
{ 16, 8, 9, 1 },
{ 16,11, 3,10 },
{ 16,11,10, 9 },
{ 16,10, 2, 9 },
{ 16, 3,19, 2 },
{ 16, 2,19,18 },
{ 16, 2,18,17 },
{ 16, 2,17, 1 },
{ 16, 4,12,15 },
{ 16,12, 5,13 },
{ 16,12,13,15 },
{ 16,13, 6,14 },
{ 16,13,14,15 },
{ 16,14, 7,15 },
{ 16, 6, 5,17 },
{ 16,18, 6,17 },
{ 16,18, 7, 6 },
{ 16,18,19, 7 },
};
int type = GetVolumeType();
int n1 = ind[type];
int n2 = ind[type+1];
for (int i = n1; i < n2; i++) {
V -= getTetraVolume( myVolumeNodes[ vtab[i][0] ],
myVolumeNodes[ vtab[i][1] ],
myVolumeNodes[ vtab[i][2] ],
myVolumeNodes[ vtab[i][3] ]);
}
}
return V;
}
//=======================================================================
//function : GetBaryCenter
//purpose :
//=======================================================================
bool SMDS_VolumeTool::GetBaryCenter(double & X, double & Y, double & Z) const
{
X = Y = Z = 0.;
if ( !myVolume )
return false;
for ( int i = 0; i < myVolumeNbNodes; i++ ) {
X += myVolumeNodes[ i ]->X();
Y += myVolumeNodes[ i ]->Y();
Z += myVolumeNodes[ i ]->Z();
}
X /= myVolumeNbNodes;
Y /= myVolumeNbNodes;
Z /= myVolumeNbNodes;
return true;
}
//=======================================================================
//function : SetExternalNormal
//purpose : Node order will be so that faces normals are external
//=======================================================================
void SMDS_VolumeTool::SetExternalNormal ()
{
myExternalFaces = true;
myCurFace = -1;
}
//=======================================================================
//function : NbFaceNodes
//purpose : Return number of nodes in the array of face nodes
//=======================================================================
int SMDS_VolumeTool::NbFaceNodes( int faceIndex )
{
if ( !setFace( faceIndex ))
return 0;
return myFaceNbNodes;
}
//=======================================================================
//function : GetFaceNodes
//purpose : Return pointer to the array of face nodes.
// To comfort link iteration, the array
// length == NbFaceNodes( faceIndex ) + 1 and
// the last node == the first one.
//=======================================================================
const SMDS_MeshNode** SMDS_VolumeTool::GetFaceNodes( int faceIndex )
{
if ( !setFace( faceIndex ))
return 0;
return myFaceNodes;
}
//=======================================================================
//function : GetFaceNodesIndices
//purpose : Return pointer to the array of face nodes indices
// To comfort link iteration, the array
// length == NbFaceNodes( faceIndex ) + 1 and
// the last node index == the first one.
//=======================================================================
const int* SMDS_VolumeTool::GetFaceNodesIndices( int faceIndex )
{
if (myVolume->IsPoly()) {
MESSAGE("Warning: attempt to obtain FaceNodesIndices of polyhedral volume");
return NULL;
}
if ( !setFace( faceIndex ))
return 0;
return myFaceNodeIndices;
}
//=======================================================================
//function : GetFaceNodes
//purpose : Return a set of face nodes.
//=======================================================================
bool SMDS_VolumeTool::GetFaceNodes (int faceIndex,
set<const SMDS_MeshNode*>& theFaceNodes )
{
if ( !setFace( faceIndex ))
return false;
theFaceNodes.clear();
int iNode, nbNode = myFaceNbNodes;
for ( iNode = 0; iNode < nbNode; iNode++ )
theFaceNodes.insert( myFaceNodes[ iNode ]);
return true;
}
//=======================================================================
//function : IsFaceExternal
//purpose : Check normal orientation of a returned face
//=======================================================================
bool SMDS_VolumeTool::IsFaceExternal( int faceIndex )
{
if ( myExternalFaces || !myVolume )
return true;
if (myVolume->IsPoly()) {
XYZ aNormal, baryCenter, p0 (myPolyedre->GetFaceNode(faceIndex + 1, 1));
GetFaceNormal(faceIndex, aNormal.x, aNormal.y, aNormal.z);
GetBaryCenter(baryCenter.x, baryCenter.y, baryCenter.z);
XYZ insideVec (baryCenter - p0);
if (insideVec.Dot(aNormal) > 0)
return false;
return true;
}
switch ( myVolumeNbNodes ) {
case 4:
case 5:
case 10:
case 13:
// only the bottom of a reversed tetrahedron can be internal
return ( myVolForward || faceIndex != 0 );
case 6:
case 15:
// in a forward pentahedron, the top is internal, in a reversed one - bottom
return ( myVolForward ? faceIndex != 1 : faceIndex != 0 );
case 8:
case 20: {
// in a forward hexahedron, even face normal is external, odd - internal
bool odd = faceIndex % 2;
return ( myVolForward ? !odd : odd );
}
default:;
}
return false;
}
//=======================================================================
//function : GetFaceNormal
//purpose : Return a normal to a face
//=======================================================================
bool SMDS_VolumeTool::GetFaceNormal (int faceIndex, double & X, double & Y, double & Z)
{
if ( !setFace( faceIndex ))
return false;
XYZ p1 ( myFaceNodes[0] );
XYZ p2 ( myFaceNodes[1] );
XYZ p3 ( myFaceNodes[2] );
XYZ aVec12( p2 - p1 );
XYZ aVec13( p3 - p1 );
XYZ cross = aVec12.Crossed( aVec13 );
//if ( myFaceNbNodes == 4 ) {
if ( myFaceNbNodes >3 ) {
XYZ p4 ( myFaceNodes[3] );
XYZ aVec14( p4 - p1 );
XYZ cross2 = aVec13.Crossed( aVec14 );
cross.x += cross2.x;
cross.y += cross2.y;
cross.z += cross2.z;
}
double size = cross.Magnitude();
if ( size <= DBL_MIN )
return false;
X = cross.x / size;
Y = cross.y / size;
Z = cross.z / size;
return true;
}
//=======================================================================
//function : GetFaceArea
//purpose : Return face area
//=======================================================================
double SMDS_VolumeTool::GetFaceArea( int faceIndex )
{
if (myVolume->IsPoly()) {
MESSAGE("Warning: attempt to obtain area of a face of polyhedral volume");
return 0;
}
if ( !setFace( faceIndex ))
return 0;
XYZ p1 ( myFaceNodes[0] );
XYZ p2 ( myFaceNodes[1] );
XYZ p3 ( myFaceNodes[2] );
XYZ aVec12( p2 - p1 );
XYZ aVec13( p3 - p1 );
double area = aVec12.Crossed( aVec13 ).Magnitude() * 0.5;
if ( myFaceNbNodes == 4 ) {
XYZ p4 ( myFaceNodes[3] );
XYZ aVec14( p4 - p1 );
area += aVec14.Crossed( aVec13 ).Magnitude() * 0.5;
}
return area;
}
//=======================================================================
//function : GetOppFaceIndex
//purpose : Return index of the opposite face if it exists, else -1.
//=======================================================================
int SMDS_VolumeTool::GetOppFaceIndex( int faceIndex ) const
{
int ind = -1;
if (myVolume->IsPoly()) {
MESSAGE("Warning: attempt to obtain opposite face on polyhedral volume");
return ind;
}
if ( faceIndex >= 0 && faceIndex < NbFaces() ) {
switch ( myVolumeNbNodes ) {
case 6:
if ( faceIndex == 0 || faceIndex == 1 )
ind = 1 - faceIndex;
break;
case 8:
ind = faceIndex + ( faceIndex % 2 ? -1 : 1 );
break;
default:;
}
}
return ind;
}
//=======================================================================
//function : IsLinked
//purpose : return true if theNode1 is linked with theNode2
//=======================================================================
bool SMDS_VolumeTool::IsLinked (const SMDS_MeshNode* theNode1,
const SMDS_MeshNode* theNode2) const
{
if ( !myVolume )
return false;
if (myVolume->IsPoly()) {
if (!myPolyedre) {
MESSAGE("Warning: bad volumic element");
return false;
}
bool isLinked = false;
int iface;
for (iface = 1; iface <= myNbFaces && !isLinked; iface++) {
int inode, nbFaceNodes = myPolyedre->NbFaceNodes(iface);
for (inode = 1; inode <= nbFaceNodes && !isLinked; inode++) {
const SMDS_MeshNode* curNode = myPolyedre->GetFaceNode(iface, inode);
if (curNode == theNode1 || curNode == theNode2) {
int inextnode = (inode == nbFaceNodes) ? 1 : inode + 1;
const SMDS_MeshNode* nextNode = myPolyedre->GetFaceNode(iface, inextnode);
if ((curNode == theNode1 && nextNode == theNode2) ||
(curNode == theNode2 && nextNode == theNode1)) {
isLinked = true;
}
}
}
}
return isLinked;
}
// find nodes indices
int i1 = -1, i2 = -1;
for ( int i = 0; i < myVolumeNbNodes; i++ ) {
if ( myVolumeNodes[ i ] == theNode1 )
i1 = i;
else if ( myVolumeNodes[ i ] == theNode2 )
i2 = i;
}
return IsLinked( i1, i2 );
}
//=======================================================================
//function : IsLinked
//purpose : return true if the node with theNode1Index is linked
// with the node with theNode2Index
//=======================================================================
bool SMDS_VolumeTool::IsLinked (const int theNode1Index,
const int theNode2Index) const
{
if ( myVolume->IsPoly() ) {
return IsLinked(myVolumeNodes[theNode1Index], myVolumeNodes[theNode2Index]);
}
int minInd = theNode1Index < theNode2Index ? theNode1Index : theNode2Index;
int maxInd = theNode1Index < theNode2Index ? theNode2Index : theNode1Index;
if ( minInd < 0 || maxInd > myVolumeNbNodes - 1 || maxInd == minInd )
return false;
switch ( myVolumeNbNodes ) {
case 4:
return true;
case 5:
if ( maxInd == 4 )
return true;
switch ( maxInd - minInd ) {
case 1:
case 3: return true;
default:;
}
break;
case 6:
switch ( maxInd - minInd ) {
case 1: return minInd != 2;
case 2: return minInd == 0 || minInd == 3;
case 3: return true;
default:;
}
break;
case 8:
switch ( maxInd - minInd ) {
case 1: return minInd != 3;
case 3: return minInd == 0 || minInd == 4;
case 4: return true;
default:;
}
break;
case 10:
{
switch ( minInd ) {
case 0: if( maxInd==4 || maxInd==6 || maxInd==7 ) return true;
case 1: if( maxInd==4 || maxInd==5 || maxInd==8 ) return true;
case 2: if( maxInd==5 || maxInd==6 || maxInd==9 ) return true;
case 3: if( maxInd==7 || maxInd==8 || maxInd==9 ) return true;
default:;
}
break;
}
case 13:
{
switch ( minInd ) {
case 0: if( maxInd==5 || maxInd==8 || maxInd==9 ) return true;
case 1: if( maxInd==5 || maxInd==6 || maxInd==10 ) return true;
case 2: if( maxInd==6 || maxInd==7 || maxInd==11 ) return true;
case 3: if( maxInd==7 || maxInd==8 || maxInd==12 ) return true;
case 4: if( maxInd==9 || maxInd==10 || maxInd==11 || maxInd==12 ) return true;
default:;
}
break;
}
case 15:
{
switch ( minInd ) {
case 0: if( maxInd==6 || maxInd==8 || maxInd==12 ) return true;
case 1: if( maxInd==6 || maxInd==7 || maxInd==13 ) return true;
case 2: if( maxInd==7 || maxInd==8 || maxInd==14 ) return true;
case 3: if( maxInd==9 || maxInd==11 || maxInd==12 ) return true;
case 4: if( maxInd==9 || maxInd==10 || maxInd==13 ) return true;
case 5: if( maxInd==10 || maxInd==11 || maxInd==14 ) return true;
default:;
}
break;
}
case 20:
{
switch ( minInd ) {
case 0: if( maxInd==8 || maxInd==11 || maxInd==16 ) return true;
case 1: if( maxInd==8 || maxInd==9 || maxInd==17 ) return true;
case 2: if( maxInd==9 || maxInd==10 || maxInd==18 ) return true;
case 3: if( maxInd==10 || maxInd==11 || maxInd==19 ) return true;
case 4: if( maxInd==12 || maxInd==15 || maxInd==16 ) return true;
case 5: if( maxInd==12 || maxInd==13 || maxInd==17 ) return true;
case 6: if( maxInd==13 || maxInd==14 || maxInd==18 ) return true;
case 7: if( maxInd==14 || maxInd==15 || maxInd==19 ) return true;
default:;
}
break;
}
default:;
}
return false;
}
//=======================================================================
//function : GetNodeIndex
//purpose : Return an index of theNode
//=======================================================================
int SMDS_VolumeTool::GetNodeIndex(const SMDS_MeshNode* theNode) const
{
if ( myVolume ) {
for ( int i = 0; i < myVolumeNbNodes; i++ ) {
if ( myVolumeNodes[ i ] == theNode )
return i;
}
}
return -1;
}
//=======================================================================
//function : IsFreeFace
//purpose : check that only one volume is build on the face nodes
//=======================================================================
bool SMDS_VolumeTool::IsFreeFace( int faceIndex )
{
const int free = true;
if (!setFace( faceIndex ))
return !free;
const SMDS_MeshNode** nodes = GetFaceNodes( faceIndex );
int nbFaceNodes = myFaceNbNodes;
// evaluate nb of face nodes shared by other volume
int maxNbShared = -1;
typedef map< const SMDS_MeshElement*, int > TElemIntMap;
TElemIntMap volNbShared;
TElemIntMap::iterator vNbIt;
for ( int iNode = 0; iNode < nbFaceNodes; iNode++ ) {
const SMDS_MeshNode* n = nodes[ iNode ];
SMDS_ElemIteratorPtr eIt = n->GetInverseElementIterator();
while ( eIt->more() ) {
const SMDS_MeshElement* elem = eIt->next();
if ( elem != myVolume && elem->GetType() == SMDSAbs_Volume ) {
int nbShared = 1;
vNbIt = volNbShared.find( elem );
if ( vNbIt == volNbShared.end() ) {
volNbShared.insert ( TElemIntMap::value_type( elem, nbShared ));
}
else {
nbShared = ++(*vNbIt).second;
}
if ( nbShared > maxNbShared )
maxNbShared = nbShared;
}
}
}
if ( maxNbShared < 3 )
return free; // is free
// find volumes laying on the opposite side of the face
// and sharing all nodes
XYZ intNormal; // internal normal
GetFaceNormal( faceIndex, intNormal.x, intNormal.y, intNormal.z );
if ( IsFaceExternal( faceIndex ))
intNormal = XYZ( -intNormal.x, -intNormal.y, -intNormal.z );
XYZ p0 ( nodes[0] ), baryCenter;
for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); vNbIt++ ) {
int nbShared = (*vNbIt).second;
if ( nbShared >= 3 ) {
SMDS_VolumeTool volume( (*vNbIt).first );
volume.GetBaryCenter( baryCenter.x, baryCenter.y, baryCenter.z );
XYZ intNormal2( baryCenter - p0 );
if ( intNormal.Dot( intNormal2 ) < 0 )
continue; // opposite side
}
// remove a volume from volNbShared map
volNbShared.erase( vNbIt );
}
// here volNbShared contains only volumes laying on the
// opposite side of the face
if ( volNbShared.empty() ) {
return free; // is free
}
// check if the whole area of a face is shared
bool isShared[] = { false, false, false, false }; // 4 triangle parts of a quadrangle
for ( vNbIt = volNbShared.begin(); vNbIt != volNbShared.end(); vNbIt++ ) {
SMDS_VolumeTool volume( (*vNbIt).first );
bool prevLinkShared = false;
int nbSharedLinks = 0;
for ( int iNode = 0; iNode < nbFaceNodes; iNode++ ) {
bool linkShared = volume.IsLinked( nodes[ iNode ], nodes[ iNode + 1] );
if ( linkShared )
nbSharedLinks++;
if ( linkShared && prevLinkShared &&
volume.IsLinked( nodes[ iNode - 1 ], nodes[ iNode + 1] ))
isShared[ iNode ] = true;
prevLinkShared = linkShared;
}
if ( nbSharedLinks == nbFaceNodes )
return !free; // is not free
if ( nbFaceNodes == 4 ) {
// check traingle parts 1 & 3
if ( isShared[1] && isShared[3] )
return !free; // is not free
// check triangle parts 0 & 2;
// 0 part could not be checked in the loop; check it here
if ( isShared[2] && prevLinkShared &&
volume.IsLinked( nodes[ 0 ], nodes[ 1 ] ) &&
volume.IsLinked( nodes[ 1 ], nodes[ 3 ] ) )
return !free; // is not free
}
}
return free;
}
//=======================================================================
//function : GetFaceIndex
//purpose : Return index of a face formed by theFaceNodes
//=======================================================================
int SMDS_VolumeTool::GetFaceIndex( const set<const SMDS_MeshNode*>& theFaceNodes )
{
for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
const SMDS_MeshNode** nodes = GetFaceNodes( iFace );
int nbFaceNodes = NbFaceNodes( iFace );
set<const SMDS_MeshNode*> nodeSet;
for ( int iNode = 0; iNode < nbFaceNodes; iNode++ )
nodeSet.insert( nodes[ iNode ] );
if ( theFaceNodes == nodeSet )
return iFace;
}
return -1;
}
//=======================================================================
//function : GetFaceIndex
//purpose : Return index of a face formed by theFaceNodes
//=======================================================================
/*int SMDS_VolumeTool::GetFaceIndex( const set<int>& theFaceNodesIndices )
{
for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
const int* nodes = GetFaceNodesIndices( iFace );
int nbFaceNodes = NbFaceNodes( iFace );
set<int> nodeSet;
for ( int iNode = 0; iNode < nbFaceNodes; iNode++ )
nodeSet.insert( nodes[ iNode ] );
if ( theFaceNodesIndices == nodeSet )
return iFace;
}
return -1;
}*/
//=======================================================================
//function : setFace
//purpose :
//=======================================================================
bool SMDS_VolumeTool::setFace( int faceIndex )
{
if ( !myVolume )
return false;
if ( myCurFace == faceIndex )
return true;
myCurFace = -1;
if ( faceIndex < 0 || faceIndex >= NbFaces() )
return false;
if (myFaceNodes != NULL) {
delete [] myFaceNodes;
myFaceNodes = NULL;
}
if (myVolume->IsPoly()) {
if (!myPolyedre) {
MESSAGE("Warning: bad volumic element");
return false;
}
// check orientation
bool isGoodOri = true;
if (myExternalFaces)
isGoodOri = IsFaceExternal( faceIndex );
// set face nodes
int iNode;
myFaceNbNodes = myPolyedre->NbFaceNodes(faceIndex + 1);
myFaceNodes = new const SMDS_MeshNode* [myFaceNbNodes + 1];
if (isGoodOri) {
for ( iNode = 0; iNode < myFaceNbNodes; iNode++ )
myFaceNodes[ iNode ] = myPolyedre->GetFaceNode(faceIndex + 1, iNode + 1);
} else {
for ( iNode = 0; iNode < myFaceNbNodes; iNode++ )
myFaceNodes[ iNode ] = myPolyedre->GetFaceNode(faceIndex + 1, myFaceNbNodes - iNode);
}
myFaceNodes[ myFaceNbNodes ] = myFaceNodes[ 0 ]; // last = first
}
else {
// choose face node indices
switch ( myVolumeNbNodes ) {
case 4:
myFaceNbNodes = Tetra_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? Tetra_F[ faceIndex ] : Tetra_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? Tetra_F[ faceIndex ] : Tetra_R[ faceIndex ];
break;
case 5:
myFaceNbNodes = Pyramid_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? Pyramid_F[ faceIndex ] : Pyramid_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? Pyramid_F[ faceIndex ] : Pyramid_R[ faceIndex ];
break;
case 6:
myFaceNbNodes = Penta_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? Penta_FE[ faceIndex ] : Penta_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? Penta_F[ faceIndex ] : Penta_R[ faceIndex ];
break;
case 8:
myFaceNbNodes = Hexa_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? Hexa_FE[ faceIndex ] : Hexa_RE[ faceIndex ];
else
myFaceNodeIndices = Hexa_F[ faceIndex ];
break;
case 10:
myFaceNbNodes = QuadTetra_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? QuadTetra_F[ faceIndex ] : QuadTetra_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? QuadTetra_F[ faceIndex ] : QuadTetra_R[ faceIndex ];
break;
case 13:
myFaceNbNodes = QuadPyram_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? QuadPyram_F[ faceIndex ] : QuadPyram_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? QuadPyram_F[ faceIndex ] : QuadPyram_R[ faceIndex ];
break;
case 15:
myFaceNbNodes = QuadPenta_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? QuadPenta_FE[ faceIndex ] : QuadPenta_RE[ faceIndex ];
else
myFaceNodeIndices = myVolForward ? QuadPenta_F[ faceIndex ] : QuadPenta_R[ faceIndex ];
break;
case 20:
myFaceNbNodes = QuadHexa_nbN[ faceIndex ];
if ( myExternalFaces )
myFaceNodeIndices = myVolForward ? QuadHexa_FE[ faceIndex ] : QuadHexa_RE[ faceIndex ];
else
myFaceNodeIndices = QuadHexa_F[ faceIndex ];
break;
default:
return false;
}
// set face nodes
myFaceNodes = new const SMDS_MeshNode* [myFaceNbNodes + 1];
for ( int iNode = 0; iNode < myFaceNbNodes; iNode++ )
myFaceNodes[ iNode ] = myVolumeNodes[ myFaceNodeIndices[ iNode ]];
myFaceNodes[ myFaceNbNodes ] = myFaceNodes[ 0 ];
}
myCurFace = faceIndex;
return true;
}
//=======================================================================
//function : GetType
//purpose : return VolumeType by nb of nodes in a volume
//=======================================================================
SMDS_VolumeTool::VolumeType SMDS_VolumeTool::GetType(int nbNodes)
{
switch ( nbNodes ) {
case 4: return TETRA;
case 5: return PYRAM;
case 6: return PENTA;
case 8: return HEXA;
case 10: return QUAD_TETRA;
case 13: return QUAD_PYRAM;
case 15: return QUAD_PENTA;
case 20: return QUAD_HEXA;
default:return UNKNOWN;
}
}
//=======================================================================
//function : NbFaces
//purpose : return nb of faces by volume type
//=======================================================================
int SMDS_VolumeTool::NbFaces( VolumeType type )
{
switch ( type ) {
case TETRA :
case QUAD_TETRA: return 4;
case PYRAM :
case QUAD_PYRAM: return 5;
case PENTA :
case QUAD_PENTA: return 5;
case HEXA :
case QUAD_HEXA : return 6;
default: return 0;
}
}
//=======================================================================
//function : GetFaceNodesIndices
//purpose : Return the array of face nodes indices
// To comfort link iteration, the array
// length == NbFaceNodes( faceIndex ) + 1 and
// the last node index == the first one.
//=======================================================================
const int* SMDS_VolumeTool::GetFaceNodesIndices(VolumeType type,
int faceIndex,
bool external)
{
switch ( type ) {
case TETRA: return Tetra_F[ faceIndex ];
case PYRAM: return Pyramid_F[ faceIndex ];
case PENTA: return external ? Penta_FE[ faceIndex ] : Penta_F[ faceIndex ];
case HEXA: return external ? Hexa_FE[ faceIndex ] : Hexa_F[ faceIndex ];
case QUAD_TETRA: return QuadTetra_F[ faceIndex ];
case QUAD_PYRAM: return QuadPyram_F[ faceIndex ];
case QUAD_PENTA: return external ? QuadPenta_FE[ faceIndex ] : QuadPenta_F[ faceIndex ];
case QUAD_HEXA: return external ? QuadHexa_FE[ faceIndex ] : QuadHexa_F[ faceIndex ];
default:;
}
return 0;
}
//=======================================================================
//function : NbFaceNodes
//purpose : Return number of nodes in the array of face nodes
//=======================================================================
int SMDS_VolumeTool::NbFaceNodes(VolumeType type,
int faceIndex )
{
switch ( type ) {
case TETRA: return Tetra_nbN[ faceIndex ];
case PYRAM: return Pyramid_nbN[ faceIndex ];
case PENTA: return Penta_nbN[ faceIndex ];
case HEXA: return Hexa_nbN[ faceIndex ];
case QUAD_TETRA: return QuadTetra_nbN[ faceIndex ];
case QUAD_PYRAM: return QuadPyram_nbN[ faceIndex ];
case QUAD_PENTA: return QuadPenta_nbN[ faceIndex ];
case QUAD_HEXA: return QuadHexa_nbN[ faceIndex ];
default:;
}
return 0;
}
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