// 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 +---|---+ N2 TETRAHEDRON
+// N0 +---|---+ N1 TETRAHEDRON
// \ | /
// \ | /
// \ | /
// \|/
// +
-// N1
+// N2
*/
-static int Tetra_F [4][4] = { // FORWARD == REVERSED EXTERNAL
- { 0, 1, 2, 0 }, // Bottom face has an internal normal, other - external
+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_R [4][4] = { // REVERSED == FORWARD EXTERNAL
- { 0, 2, 1, 0 }, // All faces have external normals
+ { 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 }};
+ { 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
// /|\
{ 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, 2, 5, 4, 1 },
- { 1, 0, 3, 4, 1 }};
+ { 1, 4, 5, 2, 1 },
+ { 0, 3, 4, 1, 0 }};
static int Penta_R [5][5] = { // REVERSED
- { 0, 2, 1, 0, 0 }, // Bottom face has an internal normal, other - external
- { 3, 5, 4, 3, 3 }, // 0 is bottom, 1 is top face
- { 0, 2, 5, 3, 0 },
+ { 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 },
- { 1, 0, 3, 4, 1 }};
-static int Penta_FE [5][5] = { // EXTERNAL
+ { 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 },
- { 1, 0, 3, 4, 1 }};
-static int Penta_RE [5][5] = { // REVERSED EXTERNAL
- { 0, 0, 2, 1, 0 },
- { 3, 3, 4, 5, 3 },
- { 0, 2, 5, 3, 0 },
- { 1, 2, 5, 4, 1 },
- { 1, 0, 3, 4, 1 }};
+ { 0, 1, 4, 3, 0 }};
static int Penta_nbN [] = { 3, 3, 4, 4, 4 };
/*
-// N7+----------+N6
+// N5+----------+N6
// /| /|
// / | / |
// / | / |
-// N4+----------+N5 |
+// N4+----------+N7 |
// | | | | HEXAHEDRON
// | | | |
// | | | |
-// | N3+------|---+N2
+// | N1+------|---+N2
// | / | /
// | / | /
// |/ |/
-// N0+----------+N1
+// N0+----------+N3
*/
static int Hexa_F [6][5] = { // FORWARD
{ 0, 1, 2, 3, 0 }, // opposite faces are neighbouring,
- { 4, 5, 6, 7, 4 }, // even face normal is internal, odd - external
- { 1, 0, 4, 5, 1 }, // same index nodes nodes of opposite faces are linked
+ { 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 }, // even face normal is external, odd - internal
- { 1, 5, 4, 0, 1 }, // same index nodes 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] = { // 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 },
- { 1, 2, 6, 5, 1 },
- { 0, 4, 7, 3, 0 }};
-static int Hexa_RE [6][5] = { // REVERSED EXTERNAL
- { 0, 1, 2, 3, 0 }, // opposite faces are neighbouring,
- { 4, 7, 6, 5, 4 }, // all face normals are external,
- { 0, 1, 5, 4, 0 }, // links in opposite faces: 0-0, 1-3, 2-2, 3-1
+ { 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 },
- { 1, 2, 6, 5, 1 },
- { 0, 4, 7, 3, 0 }};
+ { 0, 4, 7, 3, 0 },
+ { 1, 2, 6, 5, 1 }};
static int Hexa_nbN [] = { 4, 4, 4, 4, 4, 4 };
// ========================================================
SMDS_VolumeTool::SMDS_VolumeTool ()
: myVolume( 0 ),
+ myPolyedre( 0 ),
myVolForward( true ),
myNbFaces( 0 ),
myVolumeNbNodes( 0 ),
- myForwardFaces( false ),
- myExternalFaces( false )
+ myVolumeNodes( NULL ),
+ myExternalFaces( false ),
+ myFaceNbNodes( 0 ),
+ myCurFace( -1 ),
+ myFaceNodeIndices( NULL ),
+ myFaceNodes( NULL )
{
}
+
//=======================================================================
//function : SMDS_VolumeTool
//purpose :
//=======================================================================
SMDS_VolumeTool::SMDS_VolumeTool (const SMDS_MeshElement* theVolume)
- : myForwardFaces( false ),
- myExternalFaces( false )
+ : myVolume( 0 ),
+ myPolyedre( 0 ),
+ myVolForward( true ),
+ myNbFaces( 0 ),
+ myVolumeNbNodes( 0 ),
+ myVolumeNodes( NULL ),
+ myExternalFaces( false ),
+ myFaceNbNodes( 0 ),
+ myCurFace( -1 ),
+ myFaceNodeIndices( NULL ),
+ myFaceNodes( NULL )
{
Set( theVolume );
}
SMDS_VolumeTool::~SMDS_VolumeTool()
{
+ if (myVolumeNodes != NULL) {
+ delete [] myVolumeNodes;
+ myVolumeNodes = NULL;
+ }
+ if (myFaceNodes != NULL) {
+ delete [] myFaceNodes;
+ myFaceNodes = NULL;
+ }
}
//=======================================================================
bool SMDS_VolumeTool::Set (const SMDS_MeshElement* theVolume)
{
myVolume = 0;
+ myPolyedre = 0;
+
myVolForward = true;
- myCurFace = -1;
- myVolumeNbNodes = 0;
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();
- switch ( myVolumeNbNodes ) {
- case 4:
- case 6:
- case 8:
- {
- myVolume = theVolume;
- myNbFaces = theVolume->NbFaces();
-
- // set volume nodes
- int iNode = 0;
- SMDS_ElemIteratorPtr nodeIt = myVolume->nodesIterator();
- while ( nodeIt->more() )
- myVolumeNodes[ iNode++ ] = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
-
- // nb nodes in each face
- if ( myVolumeNbNodes == 4 )
- myFaceNbNodes = Tetra_nbN;
- else if ( myVolumeNbNodes == 6 )
- myFaceNbNodes = Penta_nbN;
- else
- myFaceNbNodes = Hexa_nbN;
- break;
- // 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() );
- bool diffDir = ( botNormal.Dot( upDir ) < 0 );
- myVolForward = ( myVolumeNbNodes == 6 ? diffDir : !diffDir );
+ // 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() );
}
- default: myVolume = 0;
+
+ 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: {
+ // 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 : GetInverseNodes
-//purpose : Return nodes vector of an inverse volume
+//function : Inverse
+//purpose : Inverse volume
//=======================================================================
-#define SWAP_NODES(nodes,i1,i2) \
-{ \
+#define SWAP_NODES(nodes,i1,i2) \
+{ \
const SMDS_MeshNode* tmp = nodes[ i1 ]; \
- nodes[ i1 ] = nodes[ i2 ]; \
+ 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;
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 );
return true;
}
-//=======================================================================
-//function : SetForwardOrientation
-//purpose : Node order will be as for forward orientation
-//=======================================================================
-
-void SMDS_VolumeTool::SetForwardOrientation ()
-{
- myForwardFaces = true;
-}
-
//=======================================================================
//function : SetExternalNormal
//purpose : Node order will be so that faces normals are external
void SMDS_VolumeTool::SetExternalNormal ()
{
myExternalFaces = true;
+ myCurFace = -1;
}
//=======================================================================
int SMDS_VolumeTool::NbFaceNodes( int faceIndex )
{
- if ( !setFace( faceIndex ))
- return 0;
- return myFaceNbNodes[ faceIndex ];
+ if ( !setFace( faceIndex ))
+ return 0;
+ return myFaceNbNodes;
}
//=======================================================================
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;
//purpose : Return a set of face nodes.
//=======================================================================
-bool SMDS_VolumeTool::GetFaceNodes (int faceIndex,
- std::set<const SMDS_MeshNode*>& theFaceNodes )
+bool SMDS_VolumeTool::GetFaceNodes (int faceIndex,
+ set<const SMDS_MeshNode*>& theFaceNodes )
{
if ( !setFace( faceIndex ))
return false;
theFaceNodes.clear();
- int iNode, nbNode = myFaceNbNodes[ faceIndex ];
- for ( int iNode = 0; iNode < nbNode; iNode++ )
+ int iNode, nbNode = myFaceNbNodes;
+ for ( iNode = 0; iNode < nbNode; iNode++ )
theFaceNodes.insert( myFaceNodes[ iNode ]);
-
+
return true;
}
if ( myExternalFaces || !myVolume )
return true;
- bool reversed = ( !myForwardFaces && !myVolForward );
+ 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:
- // only the bottom of a forward tetrahedron can be internal
- return ( reversed || faceIndex != 0 );
+ case 5:
+ // only the bottom of a reversed tetrahedron can be internal
+ return ( myVolForward || faceIndex != 0 );
case 6:
// in a forward pentahedron, the top is internal, in a reversed one - bottom
- return ( reversed ? faceIndex != 0 : faceIndex != 1 );
+ return ( myVolForward ? faceIndex != 1 : faceIndex != 0 );
case 8: {
- // in a forward hexahedron, odd face normal is external, else vice versa
+ // in a forward hexahedron, even face normal is external, odd - internal
bool odd = faceIndex % 2;
- return ( reversed ? !odd : odd );
+ return ( myVolForward ? !odd : odd );
}
default:;
}
XYZ aVec13( p3 - p1 );
XYZ cross = aVec12.Crossed( aVec13 );
+ if ( myFaceNbNodes == 4 ) {
+ 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;
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 aVec13( p3 - p1 );
double area = aVec12.Crossed( aVec13 ).Magnitude() * 0.5;
- if ( myFaceNbNodes[ faceIndex ] == 4 ) {
+ if ( myFaceNbNodes == 4 ) {
XYZ p4 ( myFaceNodes[3] );
XYZ aVec14( p4 - p1 );
area += aVec14.Crossed( aVec13 ).Magnitude() * 0.5;
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;
+ break;
case 8:
ind = faceIndex + ( faceIndex % 2 ? -1 : 1 );
break;
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++ ) {
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;
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;
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 ))
+
+ if (!setFace( faceIndex ))
return !free;
const SMDS_MeshNode** nodes = GetFaceNodes( faceIndex );
- int nbFaceNodes = NbFaceNodes( faceIndex );
+ int nbFaceNodes = myFaceNbNodes;
// evaluate nb of face nodes shared by other volume
int maxNbShared = -1;
// check traingle parts 1 & 3
if ( isShared[1] && isShared[3] )
return !free; // is not free
- // check traingle parts 0 & 2;
+ // 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 ] ) &&
//purpose : Return index of a face formed by theFaceNodes
//=======================================================================
-int SMDS_VolumeTool::GetFaceIndex( const set<int>& theFaceNodesIndices )
+/*int SMDS_VolumeTool::GetFaceIndex( const set<int>& theFaceNodesIndices )
{
for ( int iFace = 0; iFace < myNbFaces; iFace++ ) {
const int* nodes = GetFaceNodesIndices( iFace );
return iFace;
}
return -1;
-}
+}*/
//=======================================================================
//function : setFace
if ( myCurFace == faceIndex )
return true;
+ myCurFace = -1;
+
if ( faceIndex < 0 || faceIndex >= NbFaces() )
return false;
- // choose face node indices
- switch ( myVolumeNbNodes ) {
- case 4:
- if ( myExternalFaces )
- myFaceNodeIndices = myVolForward ? Tetra_R[ faceIndex ] : Tetra_F[ faceIndex ];
- else if ( myForwardFaces )
- myFaceNodeIndices = myVolForward ? Tetra_F[ faceIndex ] : Tetra_R[ faceIndex ];
- else
- myFaceNodeIndices = Tetra_F[ faceIndex ];
- break;
- case 6:
- if ( myExternalFaces )
- myFaceNodeIndices = myVolForward ? Penta_FE[ faceIndex ] : Penta_RE[ faceIndex ];
- else if ( myForwardFaces )
- myFaceNodeIndices = myVolForward ? Penta_F[ faceIndex ] : Penta_R[ faceIndex ];
- else
- myFaceNodeIndices = Penta_F[ faceIndex ];
- break;
- case 8:
- if ( myExternalFaces )
- myFaceNodeIndices = myVolForward ? Hexa_FE[ faceIndex ] : Hexa_RE[ faceIndex ];
- else if ( myForwardFaces )
- myFaceNodeIndices = myVolForward ? Hexa_F[ faceIndex ] : Hexa_R[ faceIndex ];
- else
- myFaceNodeIndices = Hexa_F[ faceIndex ];
- break;
- default: return false;
+ if (myFaceNodes != NULL) {
+ delete [] myFaceNodes;
+ myFaceNodes = NULL;
}
- // set face nodes
- int iNode, nbNode = myFaceNbNodes[ faceIndex ];
- for ( iNode = 0; iNode <= nbNode; iNode++ )
- myFaceNodes[ iNode ] = myVolumeNodes[ myFaceNodeIndices[ iNode ]];
+ if (myVolume->IsPoly()) {
+ if (!myPolyedre) {
+ MESSAGE("Warning: bad volumic element");
+ return false;
+ }
+
+ // check orientation
+ bool isGoodOri = true;
+ if (myExternalFaces) {
+ // get natural orientation
+ XYZ aNormal, baryCenter, p0 (myPolyedre->GetFaceNode(faceIndex + 1, 1));
+ SMDS_VolumeTool vTool (myPolyedre);
+ vTool.GetFaceNormal(faceIndex, aNormal.x, aNormal.y, aNormal.z);
+ vTool.GetBaryCenter(baryCenter.x, baryCenter.y, baryCenter.z);
+ XYZ insideVec (baryCenter - p0);
+ if (insideVec.Dot(aNormal) > 0)
+ isGoodOri = false;
+ }
+
+ // 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;
+ 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;
+ default:return UNKNOWN;
+ }
+}
+
+//=======================================================================
+//function : NbFaces
+//purpose : return nb of faces by volume type
+//=======================================================================
+
+int SMDS_VolumeTool::NbFaces( VolumeType type )
+{
+ switch ( type ) {
+ case TETRA: return 4;
+ case PYRAM: return 5;
+ case PENTA: return 5;
+ case 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 ];
+ 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 ];
+ default:;
+ }
+ return 0;
+}
+
