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5e7f07d3da
smesh/src/StdMeshers/StdMeshers_Projection_2D.cxx
eap 5e7f07d3da untabify
2009-12-10 14:52:59 +00:00

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// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 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
//
// SMESH SMESH : implementaion of SMESH idl descriptions
// File : StdMeshers_Projection_2D.cxx
// Module : SMESH
// Created : Fri Oct 20 11:37:07 2006
// Author : Edward AGAPOV (eap)
//
#include "StdMeshers_Projection_2D.hxx"
#include "StdMeshers_ProjectionSource2D.hxx"
#include "StdMeshers_ProjectionUtils.hxx"
#include "SMESHDS_Hypothesis.hxx"
#include "SMESHDS_SubMesh.hxx"
#include "SMESH_Block.hxx"
#include "SMESH_Gen.hxx"
#include "SMESH_Mesh.hxx"
#include "SMESH_MesherHelper.hxx"
#include "SMESH_Pattern.hxx"
#include "SMESH_subMesh.hxx"
#include "SMESH_subMeshEventListener.hxx"
#include "SMESH_Comment.hxx"
#include "SMDS_EdgePosition.hxx"
#include "utilities.h"
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopoDS.hxx>
using namespace std;
#define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
typedef StdMeshers_ProjectionUtils TAssocTool;
//=======================================================================
//function : StdMeshers_Projection_2D
//purpose :
//=======================================================================
StdMeshers_Projection_2D::StdMeshers_Projection_2D(int hypId, int studyId, SMESH_Gen* gen)
:SMESH_2D_Algo(hypId, studyId, gen)
{
_name = "Projection_2D";
_shapeType = (1 << TopAbs_FACE); // 1 bit per shape type
_compatibleHypothesis.push_back("ProjectionSource2D");
_sourceHypo = 0;
}
//================================================================================
/*!
* \brief Destructor
*/
//================================================================================
StdMeshers_Projection_2D::~StdMeshers_Projection_2D()
{}
//=======================================================================
//function : CheckHypothesis
//purpose :
//=======================================================================
bool StdMeshers_Projection_2D::CheckHypothesis(SMESH_Mesh& theMesh,
const TopoDS_Shape& theShape,
SMESH_Hypothesis::Hypothesis_Status& theStatus)
{
list <const SMESHDS_Hypothesis * >::const_iterator itl;
const list <const SMESHDS_Hypothesis * >&hyps = GetUsedHypothesis(theMesh, theShape);
if ( hyps.size() == 0 )
{
theStatus = HYP_MISSING;
return false; // can't work with no hypothesis
}
if ( hyps.size() > 1 )
{
theStatus = HYP_ALREADY_EXIST;
return false;
}
const SMESHDS_Hypothesis *theHyp = hyps.front();
string hypName = theHyp->GetName();
theStatus = HYP_OK;
if (hypName == "ProjectionSource2D")
{
_sourceHypo = static_cast<const StdMeshers_ProjectionSource2D *>(theHyp);
// Check hypo parameters
SMESH_Mesh* srcMesh = _sourceHypo->GetSourceMesh();
SMESH_Mesh* tgtMesh = & theMesh;
if ( !srcMesh )
srcMesh = tgtMesh;
// check vertices
if ( _sourceHypo->HasVertexAssociation() )
{
// source vertices
TopoDS_Shape edge = TAssocTool::GetEdgeByVertices
( srcMesh, _sourceHypo->GetSourceVertex(1), _sourceHypo->GetSourceVertex(2) );
if ( edge.IsNull() ||
!TAssocTool::IsSubShape( edge, srcMesh ) ||
!TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
{
theStatus = HYP_BAD_PARAMETER;
SCRUTE((edge.IsNull()));
SCRUTE((TAssocTool::IsSubShape( edge, srcMesh )));
SCRUTE((TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
}
else
{
// target vertices
edge = TAssocTool::GetEdgeByVertices
( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
if ( edge.IsNull() || !TAssocTool::IsSubShape( edge, tgtMesh ))
{
theStatus = HYP_BAD_PARAMETER;
SCRUTE((edge.IsNull()));
SCRUTE((TAssocTool::IsSubShape( edge, tgtMesh )));
}
// PAL16203
else if ( !_sourceHypo->IsCompoundSource() &&
!TAssocTool::IsSubShape( edge, theShape ))
{
theStatus = HYP_BAD_PARAMETER;
SCRUTE((TAssocTool::IsSubShape( edge, theShape )));
}
}
}
// check a source face
if ( !TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
{
theStatus = HYP_BAD_PARAMETER;
SCRUTE((TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
SCRUTE((srcMesh == tgtMesh));
SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
}
}
else
{
theStatus = HYP_INCOMPATIBLE;
}
return ( theStatus == HYP_OK );
}
namespace {
//================================================================================
/*!
* \brief define if a node is new or old
* \param node - node to check
* \retval bool - true if the node existed before Compute() is called
*/
//================================================================================
bool isOldNode( const SMDS_MeshNode* node )
{
// old nodes are shared by edges and new ones are shared
// only by faces created by mapper
SMDS_ElemIteratorPtr invEdge = node->GetInverseElementIterator(SMDSAbs_Edge);
bool isOld = invEdge->more();
return isOld;
}
//================================================================================
/*!
* \brief Class to remove mesh built by pattern mapper on edges
* and vertices in the case of failure of projection algo.
* It does it's job at destruction
*/
//================================================================================
class MeshCleaner {
SMESH_subMesh* sm;
public:
MeshCleaner( SMESH_subMesh* faceSubMesh ): sm(faceSubMesh) {}
~MeshCleaner() { Clean(sm); }
void Release() { sm = 0; } // mesh will not be removed
static void Clean( SMESH_subMesh* sm, bool withSub=true )
{
if ( !sm ) return;
// PAL16567, 18920. Remove face nodes as well
// switch ( sm->GetSubShape().ShapeType() ) {
// case TopAbs_VERTEX:
// case TopAbs_EDGE: {
SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
SMESHDS_Mesh* mesh = sm->GetFather()->GetMeshDS();
while ( nIt->more() ) {
const SMDS_MeshNode* node = nIt->next();
if ( !isOldNode( node ) )
mesh->RemoveNode( node );
}
// do not break but iterate over DependsOn()
// }
// default:
if ( !withSub ) return;
SMESH_subMeshIteratorPtr smIt = sm->getDependsOnIterator(false,false);
while ( smIt->more() )
Clean( smIt->next(), false );
// }
}
};
//================================================================================
/*!
* \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 u2nodes - map to fill with nodes
* \param seamNodes - set of found nodes
* \retval bool - is a success
*/
//================================================================================
bool getBoundaryNodes ( SMESH_subMesh* sm,
const TopoDS_Face& face,
map< double, const SMDS_MeshNode* > & u2nodes,
set< const SMDS_MeshNode* > & seamNodes)
{
u2nodes.clear();
seamNodes.clear();
if ( !sm || !sm->GetSubMeshDS() )
RETURN_BAD_RESULT("Null submesh");
SMDS_NodeIteratorPtr nIt = sm->GetSubMeshDS()->GetNodes();
switch ( sm->GetSubShape().ShapeType() ) {
case TopAbs_VERTEX: {
while ( nIt->more() ) {
const SMDS_MeshNode* node = nIt->next();
if ( isOldNode( node ) ) continue;
u2nodes.insert( make_pair( 0., node ));
seamNodes.insert( node );
return true;
}
break;
}
case TopAbs_EDGE: {
// Get submeshes of sub-vertices
const map< int, SMESH_subMesh * >& subSM = sm->DependsOn();
if ( subSM.size() != 2 )
RETURN_BAD_RESULT("there must be 2 submeshes of sub-vertices"
" but we have " << subSM.size());
SMESH_subMesh* smV1 = subSM.begin()->second;
SMESH_subMesh* smV2 = subSM.rbegin()->second;
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* node = nIt->next();
if ( !isOldNode( node ) ) nV1 = node;
}
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");
// Get the whole free border of a face
list< const SMDS_MeshNode* > bordNodes;
list< const SMDS_MeshElement* > bordFaces;
if ( !SMESH_MeshEditor::FindFreeBorder (nV1, nE, nV1, bordNodes, bordFaces ))
RETURN_BAD_RESULT("free border of a face not found by nodes " <<
nV1->GetID() << " " << nE->GetID() );
// Insert nodes of the free border to the map until node on V2 encountered
SMESHDS_SubMesh* v2smDS = smV2->GetSubMeshDS();
list< const SMDS_MeshNode* >::iterator bordIt = bordNodes.begin();
bordIt++; // skip nV1
for ( ; bordIt != bordNodes.end(); ++bordIt ) {
const SMDS_MeshNode* node = *bordIt;
if ( v2smDS->Contains( node ))
break;
if ( node->GetPosition()->GetTypeOfPosition() != SMDS_TOP_EDGE )
RETURN_BAD_RESULT("Bad node position type: node " << node->GetID() <<
" pos type " << node->GetPosition()->GetTypeOfPosition());
const SMDS_EdgePosition* pos =
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
u2nodes.insert( make_pair( pos->GetUParameter(), node ));
seamNodes.insert( node );
}
if ( u2nodes.size() != seamNodes.size() )
RETURN_BAD_RESULT("Bad node params on edge " << sm->GetId() <<
", " << u2nodes.size() << " != " << seamNodes.size() );
return true;
}
default:;
}
RETURN_BAD_RESULT ("Unexpected submesh type");
} // bool getBoundaryNodes()
//================================================================================
/*!
* \brief Preform projection in case if tgtFace.IsPartner( srcFace )
* \param tgtFace - target face
* \param srcFace - source face
* \param tgtMesh - target mesh
* \param srcMesh - source mesh
* \retval bool - true if succeeded
*/
//================================================================================
bool projectPartner(const TopoDS_Face& tgtFace,
const TopoDS_Face& srcFace,
SMESH_Mesh * tgtMesh,
SMESH_Mesh * srcMesh,
const TAssocTool::TShapeShapeMap& shape2ShapeMap)
{
if ( !tgtFace.IsPartner( srcFace ))
return false;
// Fill map of src to tgt nodes with nodes on edges
map<const SMDS_MeshNode* , const SMDS_MeshNode*> src2tgtNodes;
map<const SMDS_MeshNode* , const SMDS_MeshNode*>::iterator srcN_tgtN;
for ( TopExp_Explorer srcEdge( srcFace, TopAbs_EDGE); srcEdge.More(); srcEdge.Next() )
{
const TopoDS_Shape& tgtEdge = shape2ShapeMap( srcEdge.Current() );
if ( !tgtEdge.IsPartner( srcEdge.Current() ))
return false;
map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
if ( !SMESH_Algo::GetSortedNodesOnEdge( srcMesh->GetMeshDS(),
TopoDS::Edge( srcEdge.Current() ),
/*ignoreMediumNodes = */true,
srcNodes )
||
!SMESH_Algo::GetSortedNodesOnEdge( tgtMesh->GetMeshDS(),
TopoDS::Edge( tgtEdge ),
/*ignoreMediumNodes = */true,
tgtNodes )
||
srcNodes.size() != tgtNodes.size())
return false;
map< double, const SMDS_MeshNode* >::iterator u_tn = tgtNodes.begin();
map< double, const SMDS_MeshNode* >::iterator u_sn = srcNodes.begin();
for ( ; u_tn != tgtNodes.end(); ++u_tn, ++u_sn)
src2tgtNodes.insert( make_pair( u_sn->second, u_tn->second ));
}
// Make new faces
// transformation to get location of target nodes from source ones
gp_Trsf srcTrsf = srcFace.Location();
gp_Trsf tgtTrsf = tgtFace.Location();
gp_Trsf trsf = srcTrsf.Inverted() * tgtTrsf;
// prepare the helper adding quadratic elements if necessary
SMESH_MesherHelper helper( *tgtMesh );
helper.IsQuadraticSubMesh( tgtFace );
helper.SetElementsOnShape( true );
const SMDS_MeshNode* nullNode = 0;
SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
while ( elemIt->more() ) // loop on all mesh faces on srcFace
{
const SMDS_MeshElement* elem = elemIt->next();
vector< const SMDS_MeshNode* > tgtFaceNodes;
tgtFaceNodes.reserve( elem->NbNodes() );
SMDS_ElemIteratorPtr nodeIt = elem->nodesIterator();
while ( nodeIt->more() ) // loop on nodes of the source element
{
const SMDS_MeshNode* srcNode = (const SMDS_MeshNode*) nodeIt->next();
srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
if ( srcN_tgtN->second == nullNode )
{
// create a new node
gp_Pnt tgtP = gp_Pnt(srcNode->X(),srcNode->Y(),srcNode->Z()).Transformed( trsf );
srcN_tgtN->second = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
}
tgtFaceNodes.push_back( srcN_tgtN->second );
}
// create a new face (with reversed orientation)
if ( tgtFaceNodes.size() == 3 )
helper.AddFace( tgtFaceNodes[0],tgtFaceNodes[2],tgtFaceNodes[1]);
else
helper.AddFace( tgtFaceNodes[0],tgtFaceNodes[3],tgtFaceNodes[2],tgtFaceNodes[1]);
}
return true;
}
} // namespace
//=======================================================================
//function : Compute
//purpose :
//=======================================================================
bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
{
if ( !_sourceHypo )
return false;
SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
SMESH_Mesh * tgtMesh = & theMesh;
if ( !srcMesh )
srcMesh = tgtMesh;
SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
// ---------------------------
// Make subshapes association
// ---------------------------
TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
TAssocTool::TShapeShapeMap shape2ShapeMap;
TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap, tgtFace );
if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
shape2ShapeMap) ||
!shape2ShapeMap.IsBound( tgtFace ))
return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
// ----------------------------------------------
// Assure that mesh on a source Face is computed
// ----------------------------------------------
SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
if ( tgtMesh == srcMesh ) {
if ( !TAssocTool::MakeComputed( srcSubMesh ))
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
}
else {
if ( !srcSubMesh->IsMeshComputed() )
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
}
// try to project from same face with different location
if ( projectPartner( tgtFace, srcFace, tgtMesh, srcMesh, shape2ShapeMap ))
return true;
// --------------------
// Prepare to mapping
// --------------------
SMESH_MesherHelper helper( theMesh );
helper.SetSubShape( tgtFace );
// Check if node projection to a face is needed
Bnd_B2d uvBox;
SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
int nbFaceNodes = 0;
for ( ; nbFaceNodes < 3 && faceIt->more(); ) {
const SMDS_MeshElement* face = faceIt->next();
SMDS_ElemIteratorPtr nodeIt = face->nodesIterator();
while ( nodeIt->more() ) {
const SMDS_MeshNode* node = static_cast<const SMDS_MeshNode*>( nodeIt->next() );
if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE ) {
nbFaceNodes++;
uvBox.Add( helper.GetNodeUV( srcFace, node ));
}
}
}
const bool toProjectNodes =
( nbFaceNodes > 0 && ( uvBox.IsVoid() || uvBox.SquareExtent() < DBL_MIN ));
// Load pattern from the source face
SMESH_Pattern mapper;
mapper.Load( srcMesh, srcFace, toProjectNodes );
if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
// Find the first target vertex corresponding to first vertex of the <mapper>
// and <theReverse> flag needed to call mapper.Apply()
TopoDS_Vertex srcV1 = TopoDS::Vertex( mapper.GetSubShape( 1 ));
if ( srcV1.IsNull() )
RETURN_BAD_RESULT("Mesh is not bound to the face");
if ( !shape2ShapeMap.IsBound( srcV1 ))
RETURN_BAD_RESULT("Not associated vertices, srcV1 " << srcV1.TShape().operator->() );
TopoDS_Vertex tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1 ));
if ( !TAssocTool::IsSubShape( srcV1, srcFace ))
RETURN_BAD_RESULT("Wrong srcV1 " << srcV1.TShape().operator->());
if ( !TAssocTool::IsSubShape( tgtV1, tgtFace ))
RETURN_BAD_RESULT("Wrong tgtV1 " << tgtV1.TShape().operator->());
// try to find out orientation by order of edges
bool reverse = false;
list< TopoDS_Edge > tgtEdges, srcEdges;
list< int > nbEdgesInWires;
SMESH_Block::GetOrderedEdges( tgtFace, tgtV1, tgtEdges, nbEdgesInWires);
SMESH_Block::GetOrderedEdges( srcFace, srcV1, srcEdges, nbEdgesInWires);
if ( nbEdgesInWires.front() > 1 ) // possible to find out
{
TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
reverse = ( ! srcE1.IsSame( srcE1bis ));
}
else if ( nbEdgesInWires.front() == 1 )
{
// TODO::Compare orientation of curves in a sole edge
//RETURN_BAD_RESULT("Not implemented case");
}
else
{
RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
}
// --------------------
// Perform 2D mapping
// --------------------
// Compute mesh on a target face
mapper.Apply( tgtFace, tgtV1, reverse );
if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
return error("Can't apply source mesh pattern to the face");
// Create the mesh
const bool toCreatePolygons = false, toCreatePolyedrs = false;
mapper.MakeMesh( tgtMesh, toCreatePolygons, toCreatePolyedrs );
if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
return error("Can't make mesh by source mesh pattern");
// it will remove mesh built by pattern mapper on edges and vertices
// in failure case
MeshCleaner cleaner( tgtSubMesh );
// -------------------------------------------------------------------------
// mapper doesn't take care of nodes already existing on edges and vertices,
// so we must merge nodes created by it with existing ones
// -------------------------------------------------------------------------
SMESH_MeshEditor editor( tgtMesh );
SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
// Make groups of nodes to merge
// loop on edge and vertex submeshes of a target face
SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(false,false);
while ( smIt->more() )
{
SMESH_subMesh* sm = smIt->next();
SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
// Sort new and old nodes of a submesh separately
bool isSeam = helper.IsRealSeam( sm->GetId() );
enum { NEW_NODES = 0, OLD_NODES };
map< double, const SMDS_MeshNode* > u2nodesMaps[2], u2nodesOnSeam;
map< double, const SMDS_MeshNode* >::iterator u_oldNode, u_newNode, u_newOnSeam, newEnd;
set< const SMDS_MeshNode* > seamNodes;
// mapper puts on a seam edge nodes from 2 edges
if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
RETURN_BAD_RESULT("getBoundaryNodes() failed");
SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
while ( nIt->more() )
{
const SMDS_MeshNode* node = nIt->next();
bool isOld = isOldNode( node );
if ( !isOld && isSeam ) { // new node on a seam edge
if ( seamNodes.find( node ) != seamNodes.end())
continue; // node is already in the map
}
// sort nodes on edges by their position
map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
switch ( node->GetPosition()->GetTypeOfPosition() )
{
case SMDS_TOP_VERTEX: {
pos2nodes.insert( make_pair( 0, node ));
break;
}
case SMDS_TOP_EDGE: {
const SMDS_EdgePosition* pos =
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
break;
}
default:
RETURN_BAD_RESULT("Wrong node position type: "<<
node->GetPosition()->GetTypeOfPosition());
}
}
if ( u2nodesMaps[ NEW_NODES ].size() != u2nodesMaps[ OLD_NODES ].size() )
{
if ( u2nodesMaps[ NEW_NODES ].size() == 0 &&
sm->GetSubShape().ShapeType() == TopAbs_EDGE &&
helper.IsDegenShape( sm->GetId() ) )
// NPAL15894 (tt88bis.py) - project mesh built by NETGEN_1d_2D that
// does not make segments/nodes on degenerated edges
continue;
RETURN_BAD_RESULT("Different nb of old and new nodes on shape #"<< sm->GetId() <<" "<<
u2nodesMaps[ OLD_NODES ].size() << " != " <<
u2nodesMaps[ NEW_NODES ].size());
}
if ( isSeam && u2nodesMaps[ OLD_NODES ].size() != u2nodesOnSeam.size() ) {
RETURN_BAD_RESULT("Different nb of old and seam nodes " <<
u2nodesMaps[ OLD_NODES ].size() << " != " << u2nodesOnSeam.size());
}
// Make groups of nodes to merge
u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
u_newNode = u2nodesMaps[ NEW_NODES ].begin();
newEnd = u2nodesMaps[ NEW_NODES ].end();
u_newOnSeam = u2nodesOnSeam.begin();
for ( ; u_newNode != newEnd; ++u_newNode, ++u_oldNode ) {
groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
groupsOfNodes.back().push_back( u_oldNode->second );
groupsOfNodes.back().push_back( u_newNode->second );
if ( isSeam )
groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
}
}
// Merge
int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
editor.MergeNodes( groupsOfNodes );
int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
if ( nbFaceBeforeMerge != nbFaceAtferMerge )
return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
// ---------------------------
// Check elements orientation
// ---------------------------
TopoDS_Face face = tgtFace;
if ( !theMesh.IsMainShape( tgtFace ))
{
// find the main shape
TopoDS_Shape mainShape = meshDS->ShapeToMesh();
switch ( mainShape.ShapeType() ) {
case TopAbs_SHELL:
case TopAbs_SOLID: break;
default:
TopTools_ListIteratorOfListOfShape ancestIt = theMesh.GetAncestors( face );
for ( ; ancestIt.More(); ancestIt.Next() ) {
TopAbs_ShapeEnum type = ancestIt.Value().ShapeType();
if ( type == TopAbs_SOLID ) {
mainShape = ancestIt.Value();
break;
} else if ( type == TopAbs_SHELL ) {
mainShape = ancestIt.Value();
}
}
}
// find tgtFace in the main solid or shell to know it's true orientation.
TopExp_Explorer exp( mainShape, TopAbs_FACE );
for ( ; exp.More(); exp.Next() ) {
if ( tgtFace.IsSame( exp.Current() )) {
face = TopoDS::Face( exp.Current() );
break;
}
}
}
// Fix orientation
if ( SMESH_Algo::IsReversedSubMesh( face, meshDS ))
{
SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
while ( eIt->more() ) {
const SMDS_MeshElement* e = eIt->next();
if ( e->GetType() == SMDSAbs_Face && !editor.Reorient( e ))
RETURN_BAD_RESULT("Pb of SMESH_MeshEditor::Reorient()");
}
}
cleaner.Release(); // do not remove mesh
return true;
}
//=======================================================================
//function : Evaluate
//purpose :
//=======================================================================
bool StdMeshers_Projection_2D::Evaluate(SMESH_Mesh& theMesh,
const TopoDS_Shape& theShape,
MapShapeNbElems& aResMap)
{
if ( !_sourceHypo )
return false;
SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
SMESH_Mesh * tgtMesh = & theMesh;
if ( !srcMesh )
srcMesh = tgtMesh;
// ---------------------------
// Make subshapes association
// ---------------------------
TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
TopoDS_Shape srcShape = _sourceHypo->GetSourceFace().Oriented(TopAbs_FORWARD);
TAssocTool::TShapeShapeMap shape2ShapeMap;
TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap, tgtFace );
if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
shape2ShapeMap) ||
!shape2ShapeMap.IsBound( tgtFace ))
return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
// ----------------------------------------------
// Assure that mesh on a source Face is computed
// ----------------------------------------------
SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
if ( !srcSubMesh->IsMeshComputed() )
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
std::vector<int> aVec(SMDSEntity_Last);
for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
aVec[SMDSEntity_Node] = srcSubMesh->GetSubMeshDS()->NbNodes();
//bool quadratic = false;
SMDS_ElemIteratorPtr elemIt = srcSubMesh->GetSubMeshDS()->GetElements();
while ( elemIt->more() ) {
const SMDS_MeshElement* E = elemIt->next();
if( E->NbNodes()==3 ) {
aVec[SMDSEntity_Triangle]++;
}
else if( E->NbNodes()==4 ) {
aVec[SMDSEntity_Quadrangle]++;
}
else if( E->NbNodes()==6 && E->IsQuadratic() ) {
aVec[SMDSEntity_Quad_Triangle]++;
}
else if( E->NbNodes()==8 && E->IsQuadratic() ) {
aVec[SMDSEntity_Quad_Quadrangle]++;
}
else {
aVec[SMDSEntity_Polygon]++;
}
}
SMESH_subMesh * sm = theMesh.GetSubMesh(theShape);
aResMap.insert(std::make_pair(sm,aVec));
return true;
}
//=============================================================================
/*!
* \brief Sets a default event listener to submesh of the source face
* \param subMesh - submesh where algo is set
*
* This method is called when a submesh gets HYP_OK algo_state.
* After being set, event listener is notified on each event of a submesh.
* Arranges that CLEAN event is translated from source submesh to
* the submesh
*/
//=============================================================================
void StdMeshers_Projection_2D::SetEventListener(SMESH_subMesh* subMesh)
{
TAssocTool::SetEventListener( subMesh,
_sourceHypo->GetSourceFace(),
_sourceHypo->GetSourceMesh() );
}
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