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0021397: EDF SMESH: a quadrangle face mesh can't be projected to a cylinder

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eap 2012-12-28 15:53:47 +00:00
parent 00ac0dfc36
commit e205108fca
1 changed files with 92 additions and 40 deletions
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132
src/StdMeshers/StdMeshers_Projection_2D.cxx
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@ -51,6 +51,7 @@
#include <Bnd_B2d.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopoDS.hxx>
#include <gp_Ax2.hxx>
@ -248,7 +249,7 @@ namespace {
/*!
* \brief find new nodes belonging to one free border of mesh on face
* \param sm - submesh on edge or vertex containg nodes to choose from
* \param face - the face bound the submesh
* \param face - the face bound by the submesh
* \param u2nodes - map to fill with nodes
* \param seamNodes - set of found nodes
* \retval bool - is a success
@ -290,43 +291,45 @@ namespace {
if ( !smV1->IsMeshComputed() || !smV2->IsMeshComputed() )
RETURN_BAD_RESULT("Empty vertex submeshes");
// Look for a new node on V1
nIt = smV1->GetSubMeshDS()->GetNodes();
const SMDS_MeshNode* nV1 = 0;
while ( nIt->more() && !nV1 ) {
const SMDS_MeshNode* nE = 0;
// Look for nV1 - a new node on V1
nIt = smV1->GetSubMeshDS()->GetNodes();
while ( nIt->more() && !nE ) {
const SMDS_MeshNode* node = nIt->next();
if ( !isOldNode( node ) ) nV1 = node;
if ( isOldNode( node ) ) continue;
nV1 = node;
// Find nE - a new node connected to nV1 and belonging to edge submesh;
SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
while ( vElems->more() && !nE ) {
const SMDS_MeshElement* elem = vElems->next();
int nbNodes = elem->NbNodes();
if ( elem->IsQuadratic() )
nbNodes /= 2;
int iV1 = elem->GetNodeIndex( nV1 );
// try next after nV1
int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
if ( smDS->Contains( elem->GetNode( iE ) ))
nE = elem->GetNode( iE );
if ( !nE ) {
// try node before nV1
iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
if ( smDS->Contains( elem->GetNode( iE )))
nE = elem->GetNode( iE );
}
if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
if ( Abs( iV1 - iE ) == 1 )
nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
else
nE = elem->GetNode( elem->NbNodes() - 1 );
}
}
}
if ( !nV1 )
RETURN_BAD_RESULT("No new node found on V1");
// Find a new node connected to nV1 and belonging to edge submesh;
const SMDS_MeshNode* nE = 0;
SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
SMDS_ElemIteratorPtr vElems = nV1->GetInverseElementIterator(SMDSAbs_Face);
while ( vElems->more() && !nE ) {
const SMDS_MeshElement* elem = vElems->next();
int nbNodes = elem->NbNodes();
if ( elem->IsQuadratic() )
nbNodes /= 2;
int iV1 = elem->GetNodeIndex( nV1 );
// try next after nV1
int iE = SMESH_MesherHelper::WrapIndex( iV1 + 1, nbNodes );
if ( smDS->Contains( elem->GetNode( iE ) ))
nE = elem->GetNode( iE );
if ( !nE ) {
// try node before nV1
iE = SMESH_MesherHelper::WrapIndex( iV1 - 1, nbNodes );
if ( smDS->Contains( elem->GetNode( iE )))
nE = elem->GetNode( iE );
}
if ( nE && elem->IsQuadratic() ) { // find medium node between nV1 and nE
if ( Abs( iV1 - iE ) == 1 )
nE = elem->GetNode( Min ( iV1, iE ) + nbNodes );
else
nE = elem->GetNode( elem->NbNodes() - 1 );
}
}
if ( !nE )
RETURN_BAD_RESULT("new node on edge not found");
@ -393,7 +396,9 @@ namespace {
// make any local coord systems of src and tgt faces
vector<gp_Pnt> srcPP, tgtPP; // 3 points on face boundaries to make axes of CS
SMESH_subMesh * srcSM = srcMesh->GetSubMesh( srcFace );
bool sameNbVert = ( TAssocTool::Count( tgtFace, TopAbs_VERTEX, /*ignoreSame=*/true ) ==
TAssocTool::Count( srcFace, TopAbs_VERTEX, /*ignoreSame=*/true ));
SMESH_subMesh * srcSM = srcMesh->GetSubMesh( srcFace );
SMESH_subMeshIteratorPtr smIt = srcSM->getDependsOnIterator(/*includeSelf=*/false,false);
srcSM = smIt->next(); // sm of a vertex
while ( smIt->more() && srcPP.size() < 3 )
@ -430,7 +435,11 @@ namespace {
if ( tgtShape.ShapeType() == TopAbs_VERTEX )
{
tgtP = BRep_Tool::Pnt( TopoDS::Vertex( tgtShape ));
pOK = true;
if ( sameNbVert || tgtPP.empty() )
pOK = true;
else
pOK = (( tgtP.Distance( tgtPP[0] ) > tol*tol ) &&
( tgtPP.size() == 1 || tgtP.Distance( tgtPP[1] ) > tol*tol ));
//cout << "V - nS " << p._node->GetID() << " - nT " << SMESH_Algo::VertexNode(TopoDS::Vertex( tgtShape),tgtMesh->GetMeshDS())->GetID() << endl;
}
else if ( tgtPP.size() > 0 )
@ -963,6 +972,24 @@ bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape&
//if ( !is1DComputed && sm->GetSubShape().ShapeType() == TopAbs_EDGE )
//break;
if ( helper.IsDegenShape( sm->GetId() ) ) // to merge all nodes on degenerated
{
if ( sm->GetSubShape().ShapeType() == TopAbs_EDGE )
{
groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
SMESH_subMeshIteratorPtr smDegenIt
= sm->getDependsOnIterator(/*includeSelf=*/true,/*complexShapeFirst=*/false);
while ( smDegenIt->more() )
if (( smDS = smDegenIt->next()->GetSubMeshDS() ))
{
SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
while ( nIt->more() )
groupsOfNodes.back().push_back( nIt->next() );
}
}
continue; // do not treate sm of degen VERTEX
}
// Sort new and old nodes of a submesh separately
bool isSeam = helper.IsRealSeam( sm->GetId() );
@ -1021,18 +1048,43 @@ bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape&
u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
newEnd = u2nodesMaps[ OLD_NODES ].end();
for ( ; u_oldNode != newEnd; ++u_oldNode )
_badInputElements.push_back( u_oldNode->second );
SMESH_Algo::addBadInputElement( u_oldNode->second );
return error( COMPERR_BAD_INPUT_MESH,
SMESH_Comment( "Existing mesh mismatches the projected 2D mesh on " )
<< ( sm->GetSubShape().ShapeType() == TopAbs_EDGE ? "edge" : "vertex" )
<< " #" << sm->GetId() );
}
if ( isSeam && !mergeSeamToNew ) {
//RETURN_BAD_RESULT
MESSAGE("Different nb of old and seam nodes " <<
u2nodesMaps[ OLD_NODES ].size() << " != " << u2nodesOnSeam.size());
const TopoDS_Shape& seam = sm->GetSubShape();
if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
u2nodesOnSeam.size() > 0 &&
seam.ShapeType() == TopAbs_EDGE )
{
int nbE1 = TAssocTool::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
int nbE2 = TAssocTool::Count( srcFace, TopAbs_EDGE, /*ignoreSame=*/true );
if ( nbE1 != nbE2 ) // 2 EDGEs are mapped to a seam EDGE
{
// find the 2 EDGEs of srcFace
TopTools_DataMapIteratorOfDataMapOfShapeShape src2tgtIt( shape2ShapeMap._map2to1 );
for ( ; src2tgtIt.More(); src2tgtIt.Next() )
if ( seam.IsSame( src2tgtIt.Value() ))
{
const TopoDS_Shape& tgtEdge = src2tgtIt.Key();
if ( SMESHDS_SubMesh* tgtSM = srcMesh->GetMeshDS()->MeshElements( tgtEdge ))
{
SMDS_NodeIteratorPtr nIt = tgtSM->GetNodes();
while ( nIt->more() )
SMESH_Algo::addBadInputElement( nIt->next() );
}
}
return error( COMPERR_BAD_INPUT_MESH,
"Different number of nodes on two edges projected to a seam edge" );
}
}
}
// Make groups of nodes to merge
u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
u_newNode = u2nodesMaps[ NEW_NODES ].begin();
newEnd = u2nodesMaps[ NEW_NODES ].end();
@ -1061,7 +1113,7 @@ bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape&
int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
editor.MergeNodes( groupsOfNodes );
int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
if ( nbFaceBeforeMerge != nbFaceAtferMerge )
if ( nbFaceBeforeMerge != nbFaceAtferMerge && !helper.HasDegeneratedEdges() )
return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
// ----------------------------------------------------------------