-// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2014 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
+// 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 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, or (at your option) any later version.
//
-// 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.
+// 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
+// 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
+// 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
#include "StdMeshers_ProjectionSource2D.hxx"
#include "StdMeshers_ProjectionUtils.hxx"
+#include "StdMeshers_FaceSide.hxx"
+#include "SMDS_EdgePosition.hxx"
+#include "SMDS_FacePosition.hxx"
#include "SMESHDS_Hypothesis.hxx"
#include "SMESHDS_SubMesh.hxx"
#include "SMESH_Block.hxx"
+#include "SMESH_Comment.hxx"
#include "SMESH_Gen.hxx"
#include "SMESH_Mesh.hxx"
-#include "SMESH_MeshEditor.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 <BRepAdaptor_Surface.hxx>
#include <BRep_Tool.hxx>
#include <Bnd_B2d.hxx>
+#include <GeomAPI_ProjectPointOnSurf.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
+#include <TopTools_DataMapIteratorOfDataMapOfShapeShape.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopoDS.hxx>
+#include <gp_Ax2.hxx>
+#include <gp_Ax3.hxx>
using namespace std;
#define RETURN_BAD_RESULT(msg) { MESSAGE(")-: Error: " << msg); return false; }
-typedef StdMeshers_ProjectionUtils TAssocTool;
+namespace TAssocTool = StdMeshers_ProjectionUtils;
+//typedef StdMeshers_ProjectionUtils TAssocTool;
//=======================================================================
//function : StdMeshers_Projection_2D
:SMESH_2D_Algo(hypId, studyId, gen)
{
_name = "Projection_2D";
- _shapeType = (1 << TopAbs_FACE); // 1 bit per shape type
-
_compatibleHypothesis.push_back("ProjectionSource2D");
_sourceHypo = 0;
}
TopoDS_Shape edge = TAssocTool::GetEdgeByVertices
( srcMesh, _sourceHypo->GetSourceVertex(1), _sourceHypo->GetSourceVertex(2) );
if ( edge.IsNull() ||
- !TAssocTool::IsSubShape( edge, srcMesh ) ||
- !TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
+ !SMESH_MesherHelper::IsSubShape( edge, srcMesh ) ||
+ !SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() ))
{
theStatus = HYP_BAD_PARAMETER;
+ error("Invalid source vertices");
SCRUTE((edge.IsNull()));
- SCRUTE((TAssocTool::IsSubShape( edge, srcMesh )));
- SCRUTE((TAssocTool::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
+ SCRUTE((SMESH_MesherHelper::IsSubShape( edge, srcMesh )));
+ SCRUTE((SMESH_MesherHelper::IsSubShape( edge, _sourceHypo->GetSourceFace() )));
}
else
{
// target vertices
edge = TAssocTool::GetEdgeByVertices
( tgtMesh, _sourceHypo->GetTargetVertex(1), _sourceHypo->GetTargetVertex(2) );
- if ( edge.IsNull() || !TAssocTool::IsSubShape( edge, tgtMesh ))
+ if ( edge.IsNull() || !SMESH_MesherHelper::IsSubShape( edge, tgtMesh ))
{
theStatus = HYP_BAD_PARAMETER;
+ error("Invalid target vertices");
SCRUTE((edge.IsNull()));
- SCRUTE((TAssocTool::IsSubShape( edge, tgtMesh )));
+ SCRUTE((SMESH_MesherHelper::IsSubShape( edge, tgtMesh )));
}
// PAL16203
else if ( !_sourceHypo->IsCompoundSource() &&
- !TAssocTool::IsSubShape( edge, theShape ))
+ !SMESH_MesherHelper::IsSubShape( edge, theShape ))
{
theStatus = HYP_BAD_PARAMETER;
- SCRUTE((TAssocTool::IsSubShape( edge, theShape )));
+ error("Invalid target vertices");
+ SCRUTE((SMESH_MesherHelper::IsSubShape( edge, theShape )));
}
}
}
// check a source face
- if ( !TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
+ if ( !SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh ) ||
( srcMesh == tgtMesh && theShape == _sourceHypo->GetSourceFace() ))
{
theStatus = HYP_BAD_PARAMETER;
- SCRUTE((TAssocTool::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
+ error("Invalid source face");
+ SCRUTE((SMESH_MesherHelper::IsSubShape( _sourceHypo->GetSourceFace(), srcMesh )));
SCRUTE((srcMesh == tgtMesh));
SCRUTE(( theShape == _sourceHypo->GetSourceFace() ));
}
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
+ * \param node - node to check
+ * \retval bool - true if the node existed before Compute() is called
*/
//================================================================================
{
// 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;
+ //if ( is1DComputed )
+ {
+ bool isOld = node->NbInverseElements(SMDSAbs_Edge) > 0;
+ return isOld;
+ }
+ // else
+ // {
+ // SMDS_ElemIteratorPtr invFace = node->GetInverseElementIterator(SMDSAbs_Face);
+ // bool isNew = invFace->more();
+ // return !isNew;
+ // }
}
//================================================================================
void Release() { sm = 0; } // mesh will not be removed
static void Clean( SMESH_subMesh* sm, bool withSub=true )
{
- if ( !sm ) return;
+ if ( !sm || !sm->GetSubMeshDS() ) return;
// PAL16567, 18920. Remove face nodes as well
// switch ( sm->GetSubShape().ShapeType() ) {
// case TopAbs_VERTEX:
/*!
* \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
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 )))
+
+ // 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 ) ) 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 && 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 ) {
+ // 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");
if ( !nE )
RETURN_BAD_RESULT("new node on edge not found");
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());
+ static_cast<const SMDS_EdgePosition*>(node->GetPosition());
u2nodes.insert( make_pair( pos->GetUParameter(), node ));
seamNodes.insert( node );
}
} // bool getBoundaryNodes()
+ //================================================================================
+ /*!
+ * \brief Check if two consecutive EDGEs are connected in 2D
+ * \param [in] E1 - a well oriented non-seam EDGE
+ * \param [in] E2 - a possibly well oriented seam EDGE
+ * \param [in] F - a FACE
+ * \return bool - result
+ */
+ //================================================================================
+
+ bool are2dConnected( const TopoDS_Edge & E1,
+ const TopoDS_Edge & E2,
+ const TopoDS_Face & F )
+ {
+ double f,l;
+ Handle(Geom2d_Curve) c1 = BRep_Tool::CurveOnSurface( E1, F, f, l );
+ gp_Pnt2d uvLast1 = c1->Value( E1.Orientation() == TopAbs_REVERSED ? f : l );
+
+ Handle(Geom2d_Curve) c2 = BRep_Tool::CurveOnSurface( E2, F, f, l );
+ gp_Pnt2d uvFirst2 = c2->Value( f );
+ gp_Pnt2d uvLast2 = c2->Value( l );
+ double tol2 = 1e-5 * uvLast2.SquareDistance( uvFirst2 );
+
+ return (( uvLast1.SquareDistance( uvFirst2 ) < tol2 ) ||
+ ( uvLast1.SquareDistance( uvLast2 ) < tol2 ));
+ }
+
+ //================================================================================
+ /*!
+ * \brief Compose TSideVector for both FACEs keeping matching order of EDGEs
+ * and fill src2tgtNodes map
+ */
+ //================================================================================
+
+ TError getWires(const TopoDS_Face& tgtFace,
+ const TopoDS_Face& srcFace,
+ SMESH_Mesh * tgtMesh,
+ SMESH_Mesh * srcMesh,
+ const TAssocTool::TShapeShapeMap& shape2ShapeMap,
+ TSideVector& srcWires,
+ TSideVector& tgtWires,
+ TAssocTool::TNodeNodeMap& src2tgtNodes,
+ bool& is1DComputed)
+ {
+ SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
+ SMESHDS_Mesh* srcMeshDS = srcMesh->GetMeshDS();
+
+ src2tgtNodes.clear();
+
+ // get ordered src EDGEs
+ TError err;
+ srcWires = StdMeshers_FaceSide::GetFaceWires( srcFace, *srcMesh,/*skipMediumNodes=*/0, err);
+ if ( err && !err->IsOK() )
+ return err;
+
+ // make corresponding sequence of tgt EDGEs
+ tgtWires.resize( srcWires.size() );
+ for ( size_t iW = 0; iW < srcWires.size(); ++iW )
+ {
+ list< TopoDS_Edge > tgtEdges;
+ StdMeshers_FaceSidePtr srcWire = srcWires[iW];
+ TopTools_IndexedMapOfShape edgeMap; // to detect seam edges
+ for ( int iE = 0; iE < srcWire->NbEdges(); ++iE )
+ {
+ TopoDS_Edge srcE = srcWire->Edge( iE );
+ TopoDS_Edge tgtE = TopoDS::Edge( shape2ShapeMap( srcE, /*isSrc=*/true));
+ // reverse a seam edge encountered for the second time
+ const int index = edgeMap.Add( tgtE );
+ if ( index < edgeMap.Extent() ) // E is a seam
+ {
+ // check which of edges to reverse, E or one already being in tgtEdges
+ if ( are2dConnected( tgtEdges.back(), tgtE, tgtFace ))
+ {
+ list< TopoDS_Edge >::iterator eIt = tgtEdges.begin();
+ std::advance( eIt, index-1 );
+ eIt->Reverse();
+ }
+ else
+ {
+ tgtE.Reverse();
+ }
+ }
+ if ( srcWire->NbEdges() == 1 && tgtMesh == srcMesh ) // circle
+ {
+ // try to verify ori by propagation
+ pair<int,TopoDS_Edge> nE =
+ StdMeshers_ProjectionUtils::GetPropagationEdge( srcMesh, tgtE, srcE );
+ if ( !nE.second.IsNull() )
+ tgtE = nE.second;
+ }
+ tgtEdges.push_back( tgtE );
+
+
+ // Fill map of src to tgt nodes with nodes on edges
+
+ if ( srcMesh->GetSubMesh( srcE )->IsEmpty() ||
+ tgtMesh->GetSubMesh( tgtE )->IsEmpty() )
+ {
+ // add nodes on VERTEXes for a case of not meshes EDGEs
+ const TopoDS_Shape& srcV = SMESH_MesherHelper::IthVertex( 0, srcE );
+ const TopoDS_Shape& tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
+ const SMDS_MeshNode* srcN = SMESH_Algo::VertexNode( TopoDS::Vertex( srcV ), srcMeshDS );
+ const SMDS_MeshNode* tgtN = SMESH_Algo::VertexNode( TopoDS::Vertex( tgtV ), tgtMeshDS );
+ if ( srcN && tgtN )
+ src2tgtNodes.insert( make_pair( srcN, tgtN ));
+ }
+ else
+ {
+ map< double, const SMDS_MeshNode* > srcNodes, tgtNodes;
+ if (( ! SMESH_Algo::GetSortedNodesOnEdge( srcMeshDS, TopoDS::Edge( srcE ),
+ /*ignoreMediumNodes = */true,
+ srcNodes ))
+ ||
+ ( ! SMESH_Algo::GetSortedNodesOnEdge( tgtMeshDS, TopoDS::Edge( tgtE ),
+ /*ignoreMediumNodes = */true,
+ tgtNodes ))
+ )
+ return SMESH_ComputeError::New( COMPERR_BAD_INPUT_MESH,
+ "Invalid node parameters on edges");
+
+ if (( srcNodes.size() != tgtNodes.size() ) && tgtNodes.size() > 0 )
+ return SMESH_ComputeError::New( COMPERR_BAD_INPUT_MESH,
+ "Different number of nodes on edges");
+ if ( !tgtNodes.empty() )
+ {
+ 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 ));
+
+ is1DComputed = true;
+ }
+ }
+ } // loop on EDGEs of a WIRE
+
+ tgtWires[ iW ].reset( new StdMeshers_FaceSide( tgtFace, tgtEdges, tgtMesh,
+ /*theIsForward = */ true,
+ /*theIgnoreMediumNodes = */false));
+ } // loop on WIREs
+
+ return TError();
+ }
+
+ //================================================================================
+ /*!
+ * \brief Preform projection in case if tgtFace.IsPartner( srcFace ) and in case
+ * if projection by 3D transformation is possible
+ */
+ //================================================================================
+
+ bool projectPartner(const TopoDS_Face& tgtFace,
+ const TopoDS_Face& srcFace,
+ const TSideVector& tgtWires,
+ const TSideVector& srcWires,
+ const TAssocTool::TShapeShapeMap& shape2ShapeMap,
+ TAssocTool::TNodeNodeMap& src2tgtNodes,
+ const bool is1DComputed)
+ {
+ SMESH_Mesh * tgtMesh = tgtWires[0]->GetMesh();
+ SMESH_Mesh * srcMesh = srcWires[0]->GetMesh();
+ SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
+ SMESHDS_Mesh* srcMeshDS = srcMesh->GetMeshDS();
+ SMESH_MesherHelper helper( *tgtMesh );
+
+ const double tol = 1.e-7 * srcMeshDS->getMaxDim();
+
+ // transformation to get location of target nodes from source ones
+ StdMeshers_ProjectionUtils::TrsfFinder3D trsf;
+ if ( tgtFace.IsPartner( srcFace ))
+ {
+ gp_Trsf srcTrsf = srcFace.Location();
+ gp_Trsf tgtTrsf = tgtFace.Location();
+ trsf.Set( srcTrsf.Inverted() * tgtTrsf );
+ }
+ else
+ {
+ // Try to find the 3D transformation
+
+ const int totNbSeg = 50;
+ vector< gp_XYZ > srcPnts, tgtPnts;
+ srcPnts.reserve( totNbSeg );
+ tgtPnts.reserve( totNbSeg );
+ for ( size_t iW = 0; iW < srcWires.size(); ++iW )
+ {
+ const double minSegLen = srcWires[iW]->Length() / totNbSeg;
+ for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
+ {
+ int nbSeg = Max( 1, int( srcWires[iW]->EdgeLength( iE ) / minSegLen ));
+ double srcU = srcWires[iW]->FirstParameter( iE );
+ double tgtU = tgtWires[iW]->FirstParameter( iE );
+ double srcDu = ( srcWires[iW]->LastParameter( iE )- srcU ) / nbSeg;
+ double tgtDu = ( tgtWires[iW]->LastParameter( iE )- tgtU ) / nbSeg;
+ for ( size_t i = 0; i < nbSeg; ++i )
+ {
+ srcPnts.push_back( srcWires[iW]->Value3d( srcU ).XYZ() );
+ tgtPnts.push_back( tgtWires[iW]->Value3d( tgtU ).XYZ() );
+ srcU += srcDu;
+ tgtU += tgtDu;
+ }
+ }
+ }
+ if ( !trsf.Solve( srcPnts, tgtPnts ))
+ return false;
+
+ // check trsf
+
+ bool trsfIsOK = true;
+ const int nbTestPnt = 20;
+ const size_t iStep = Max( 1, int( srcPnts.size() / nbTestPnt ));
+ // check boundary
+ for ( size_t i = 0; ( i < srcPnts.size() && trsfIsOK ); i += iStep )
+ {
+ gp_Pnt trsfTgt = trsf.Transform( srcPnts[i] );
+ trsfIsOK = ( trsfTgt.SquareDistance( tgtPnts[i] ) < tol*tol );
+ }
+ // check an in-FACE point
+ if ( trsfIsOK )
+ {
+ BRepAdaptor_Surface srcSurf( srcFace );
+ gp_Pnt srcP =
+ srcSurf.Value( 0.5 * ( srcSurf.FirstUParameter() + srcSurf.LastUParameter() ),
+ 0.5 * ( srcSurf.FirstVParameter() + srcSurf.LastVParameter() ));
+ gp_Pnt tgtTrsfP = trsf.Transform( srcP );
+ TopLoc_Location loc;
+ GeomAPI_ProjectPointOnSurf& proj = helper.GetProjector( tgtFace, loc, 0.1*tol );
+ if ( !loc.IsIdentity() )
+ tgtTrsfP.Transform( loc.Transformation().Inverted() );
+ proj.Perform( tgtTrsfP );
+ trsfIsOK = ( proj.IsDone() &&
+ proj.NbPoints() > 0 &&
+ proj.LowerDistance() < tol );
+ }
+ if ( !trsfIsOK )
+ return false;
+ }
+
+ // Make new faces
+
+ // prepare the helper to adding quadratic elements if necessary
+ helper.SetSubShape( tgtFace );
+ helper.IsQuadraticSubMesh( tgtFace );
+
+ SMESHDS_SubMesh* srcSubDS = srcMeshDS->MeshElements( srcFace );
+ if ( !is1DComputed && srcSubDS->NbElements() )
+ helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
+
+ SMESH_MesherHelper srcHelper( *srcMesh );
+ srcHelper.SetSubShape( srcFace );
+
+ const SMDS_MeshNode* nullNode = 0;
+ TAssocTool::TNodeNodeMap::iterator srcN_tgtN;
+
+ // indices of nodes to create properly oriented faces
+ bool isReverse = ( !trsf.IsIdentity() );
+ int tri1 = 1, tri2 = 2, quad1 = 1, quad3 = 3;
+ if ( isReverse )
+ std::swap( tri1, tri2 ), std::swap( quad1, quad3 );
+
+ SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
+ vector< const SMDS_MeshNode* > tgtNodes;
+ while ( elemIt->more() ) // loop on all mesh faces on srcFace
+ {
+ const SMDS_MeshElement* elem = elemIt->next();
+ const int nbN = elem->NbCornerNodes();
+ tgtNodes.resize( nbN );
+ helper.SetElementsOnShape( false );
+ for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
+ {
+ const SMDS_MeshNode* srcNode = elem->GetNode(i);
+ srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
+ if ( srcN_tgtN->second == nullNode )
+ {
+ // create a new node
+ gp_Pnt tgtP = trsf.Transform( SMESH_TNodeXYZ( srcNode ));
+ SMDS_MeshNode* n = helper.AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
+ srcN_tgtN->second = n;
+ switch ( srcNode->GetPosition()->GetTypeOfPosition() )
+ {
+ case SMDS_TOP_FACE:
+ {
+ gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode );
+ tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), srcUV.X(), srcUV.Y() );
+ break;
+ }
+ case SMDS_TOP_EDGE:
+ {
+ const TopoDS_Shape & srcE = srcMeshDS->IndexToShape( srcNode->getshapeId() );
+ const TopoDS_Shape & tgtE = shape2ShapeMap( srcE, /*isSrc=*/true );
+ double srcU = srcHelper.GetNodeU( TopoDS::Edge( srcE ), srcNode );
+ tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtE ), srcU );
+ break;
+ }
+ case SMDS_TOP_VERTEX:
+ {
+ const TopoDS_Shape & srcV = srcMeshDS->IndexToShape( srcNode->getshapeId() );
+ const TopoDS_Shape & tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
+ tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
+ break;
+ }
+ default:;
+ }
+ }
+ tgtNodes[i] = srcN_tgtN->second;
+ }
+ // create a new face
+ helper.SetElementsOnShape( true );
+ switch ( nbN )
+ {
+ case 3: helper.AddFace(tgtNodes[0], tgtNodes[tri1], tgtNodes[tri2]); break;
+ case 4: helper.AddFace(tgtNodes[0], tgtNodes[quad1], tgtNodes[2], tgtNodes[quad3]); break;
+ default:
+ if ( isReverse ) std::reverse( tgtNodes.begin(), tgtNodes.end() );
+ helper.AddPolygonalFace( tgtNodes );
+ }
+ }
+
+ // check node positions
+
+ if ( !tgtFace.IsPartner( srcFace ) )
+ {
+ int nbOkPos = 0;
+ const double tol2d = 1e-12;
+ srcN_tgtN = src2tgtNodes.begin();
+ for ( ; srcN_tgtN != src2tgtNodes.end(); ++srcN_tgtN )
+ {
+ const SMDS_MeshNode* n = srcN_tgtN->second;
+ switch ( n->GetPosition()->GetTypeOfPosition() )
+ {
+ case SMDS_TOP_FACE:
+ {
+ gp_XY uv = helper.GetNodeUV( tgtFace, n ), uvBis = uv;
+ if (( helper.CheckNodeUV( tgtFace, n, uv, tol )) &&
+ (( uv - uvBis ).SquareModulus() < tol2d ) &&
+ ( ++nbOkPos > 10 ))
+ return true;
+ else
+ nbOkPos = 0;
+ break;
+ }
+ case SMDS_TOP_EDGE:
+ {
+ const TopoDS_Edge & tgtE = TopoDS::Edge( tgtMeshDS->IndexToShape( n->getshapeId() ));
+ double u = helper.GetNodeU( tgtE, n ), uBis = u;
+ if (( !helper.CheckNodeU( tgtE, n, u, tol )) ||
+ (( u - uBis ) < tol2d ))
+ nbOkPos = 0;
+ break;
+ }
+ default:;
+ }
+ }
+ }
+
+ return true;
+
+ } // bool projectPartner()
+
+ //================================================================================
+ /*!
+ * \brief Preform projection in case if the faces are similar in 2D space
+ */
+ //================================================================================
+
+ bool projectBy2DSimilarity(const TopoDS_Face& tgtFace,
+ const TopoDS_Face& srcFace,
+ const TSideVector& tgtWires,
+ const TSideVector& srcWires,
+ const TAssocTool::TShapeShapeMap& shape2ShapeMap,
+ TAssocTool::TNodeNodeMap& src2tgtNodes,
+ const bool is1DComputed)
+ {
+ SMESH_Mesh * tgtMesh = tgtWires[0]->GetMesh();
+ SMESH_Mesh * srcMesh = srcWires[0]->GetMesh();
+
+ // WARNING: we can have problems if the FACE is symmetrical in 2D,
+ // then the projection can be mirrored relating to what is expected
+
+ // 1) Find 2D transformation
+
+ StdMeshers_ProjectionUtils::TrsfFinder2D trsf;
+ {
+ // get 2 pairs of corresponding UVs
+ gp_Pnt2d srcP0 = srcWires[0]->Value2d(0.0);
+ gp_Pnt2d srcP1 = srcWires[0]->Value2d(0.333);
+ gp_Pnt2d tgtP0 = tgtWires[0]->Value2d(0.0);
+ gp_Pnt2d tgtP1 = tgtWires[0]->Value2d(0.333);
+
+ // make transformation
+ gp_Trsf2d fromTgtCS, toSrcCS; // from/to global CS
+ gp_Ax2d srcCS( srcP0, gp_Vec2d( srcP0, srcP1 ));
+ gp_Ax2d tgtCS( tgtP0, gp_Vec2d( tgtP0, tgtP1 ));
+ toSrcCS .SetTransformation( srcCS );
+ fromTgtCS.SetTransformation( tgtCS );
+ fromTgtCS.Invert();
+ trsf.Set( fromTgtCS * toSrcCS );
+
+ // check transformation
+ bool trsfIsOK = true;
+ const double tol = 1e-5 * gp_Vec2d( srcP0, srcP1 ).Magnitude();
+ for ( double u = 0.12; ( u < 1. && trsfIsOK ); u += 0.1 )
+ {
+ gp_Pnt2d srcUV = srcWires[0]->Value2d( u );
+ gp_Pnt2d tgtUV = tgtWires[0]->Value2d( u );
+ gp_Pnt2d tgtUV2 = trsf.Transform( srcUV );
+ trsfIsOK = ( tgtUV.Distance( tgtUV2 ) < tol );
+ }
+
+ // Find trsf using a least-square approximation
+ if ( !trsfIsOK )
+ {
+ // find trsf
+ const int totNbSeg = 50;
+ vector< gp_XY > srcPnts, tgtPnts;
+ srcPnts.resize( totNbSeg );
+ tgtPnts.resize( totNbSeg );
+ for ( size_t iW = 0; iW < srcWires.size(); ++iW )
+ {
+ const double minSegLen = srcWires[iW]->Length() / totNbSeg;
+ for ( int iE = 0; iE < srcWires[iW]->NbEdges(); ++iE )
+ {
+ int nbSeg = Max( 1, int( srcWires[iW]->EdgeLength( iE ) / minSegLen ));
+ double srcU = srcWires[iW]->FirstParameter( iE );
+ double tgtU = tgtWires[iW]->FirstParameter( iE );
+ double srcDu = ( srcWires[iW]->LastParameter( iE )- srcU ) / nbSeg;
+ double tgtDu = ( tgtWires[iW]->LastParameter( iE )- tgtU ) / nbSeg;
+ for ( size_t i = 0; i < nbSeg; ++i, srcU += srcDu, tgtU += tgtDu )
+ {
+ srcPnts.push_back( srcWires[iW]->Value2d( srcU ).XY() );
+ tgtPnts.push_back( tgtWires[iW]->Value2d( tgtU ).XY() );
+ }
+ }
+ }
+ if ( !trsf.Solve( srcPnts, tgtPnts ))
+ return false;
+
+ // check trsf
+
+ trsfIsOK = true;
+ const int nbTestPnt = 10;
+ const size_t iStep = Max( 1, int( srcPnts.size() / nbTestPnt ));
+ for ( size_t i = 0; ( i < srcPnts.size() && trsfIsOK ); i += iStep )
+ {
+ gp_Pnt2d trsfTgt = trsf.Transform( srcPnts[i] );
+ trsfIsOK = ( trsfTgt.Distance( tgtPnts[i] ) < tol );
+ }
+ if ( !trsfIsOK )
+ return false;
+ }
+ } // "Find transformation" block
+
+ // 2) Projection
+
+ SMESHDS_SubMesh* srcSubDS = srcMesh->GetMeshDS()->MeshElements( srcFace );
+
+ SMESH_MesherHelper helper( *tgtMesh );
+ helper.SetSubShape( tgtFace );
+ if ( is1DComputed )
+ helper.IsQuadraticSubMesh( tgtFace );
+ else
+ helper.SetIsQuadratic( srcSubDS->GetElements()->next()->IsQuadratic() );
+ helper.SetElementsOnShape( true );
+ Handle(Geom_Surface) tgtSurface = BRep_Tool::Surface( tgtFace );
+ SMESHDS_Mesh* tgtMeshDS = tgtMesh->GetMeshDS();
+
+ SMESH_MesherHelper srcHelper( *srcMesh );
+ srcHelper.SetSubShape( srcFace );
+
+ const SMDS_MeshNode* nullNode = 0;
+ TAssocTool::TNodeNodeMap::iterator srcN_tgtN;
+
+ SMDS_ElemIteratorPtr elemIt = srcSubDS->GetElements();
+ vector< const SMDS_MeshNode* > tgtNodes;
+ bool uvOK;
+ while ( elemIt->more() ) // loop on all mesh faces on srcFace
+ {
+ const SMDS_MeshElement* elem = elemIt->next();
+ const int nbN = elem->NbCornerNodes();
+ tgtNodes.resize( nbN );
+ for ( int i = 0; i < nbN; ++i ) // loop on nodes of the source element
+ {
+ const SMDS_MeshNode* srcNode = elem->GetNode(i);
+ srcN_tgtN = src2tgtNodes.insert( make_pair( srcNode, nullNode )).first;
+ if ( srcN_tgtN->second == nullNode )
+ {
+ // create a new node
+ gp_Pnt2d srcUV = srcHelper.GetNodeUV( srcFace, srcNode,
+ elem->GetNode( helper.WrapIndex(i+1,nbN)), &uvOK);
+ gp_Pnt2d tgtUV = trsf.Transform( srcUV );
+ gp_Pnt tgtP = tgtSurface->Value( tgtUV.X(), tgtUV.Y() );
+ SMDS_MeshNode* n = tgtMeshDS->AddNode( tgtP.X(), tgtP.Y(), tgtP.Z() );
+ switch ( srcNode->GetPosition()->GetTypeOfPosition() )
+ {
+ case SMDS_TOP_FACE: {
+ tgtMeshDS->SetNodeOnFace( n, helper.GetSubShapeID(), tgtUV.X(), tgtUV.Y() );
+ break;
+ }
+ case SMDS_TOP_EDGE: {
+ TopoDS_Shape srcEdge = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
+ TopoDS_Edge tgtEdge = TopoDS::Edge( shape2ShapeMap( srcEdge, /*isSrc=*/true ));
+ tgtMeshDS->SetNodeOnEdge( n, TopoDS::Edge( tgtEdge ));
+ double U = srcHelper.GetNodeU( TopoDS::Edge( srcEdge ), srcNode );
+ helper.CheckNodeU( tgtEdge, n, U, Precision::PConfusion());
+ n->SetPosition(SMDS_PositionPtr(new SMDS_EdgePosition( U )));
+ break;
+ }
+ case SMDS_TOP_VERTEX: {
+ TopoDS_Shape srcV = srcHelper.GetSubShapeByNode( srcNode, srcHelper.GetMeshDS() );
+ TopoDS_Shape tgtV = shape2ShapeMap( srcV, /*isSrc=*/true );
+ tgtMeshDS->SetNodeOnVertex( n, TopoDS::Vertex( tgtV ));
+ break;
+ }
+ }
+ srcN_tgtN->second = n;
+ }
+ tgtNodes[i] = srcN_tgtN->second;
+ }
+ // create a new face (with reversed orientation)
+ switch ( nbN )
+ {
+ case 3: helper.AddFace(tgtNodes[0], tgtNodes[2], tgtNodes[1]); break;
+ case 4: helper.AddFace(tgtNodes[0], tgtNodes[3], tgtNodes[2], tgtNodes[1]); break;
+ }
+ }
+ return true;
+
+ } // bool projectBy2DSimilarity(...)
+
+ //================================================================================
+ /*!
+ * \brief Fix bad faces by smoothing
+ */
+ //================================================================================
+
+ void fixDistortedFaces( SMESH_MesherHelper& helper,
+ TSideVector& )
+ {
+ // Detect bad faces
+
+ bool haveBadFaces = false;
+
+ const TopoDS_Face& F = TopoDS::Face( helper.GetSubShape() );
+ SMESHDS_SubMesh* smDS = helper.GetMeshDS()->MeshElements( F );
+ if ( !smDS || smDS->NbElements() == 0 ) return;
+
+ SMDS_ElemIteratorPtr faceIt = smDS->GetElements();
+ double prevArea2D = 0;
+ vector< const SMDS_MeshNode* > nodes;
+ vector< gp_XY > uv;
+ while ( faceIt->more() && !haveBadFaces )
+ {
+ const SMDS_MeshElement* face = faceIt->next();
+
+ // get nodes
+ nodes.resize( face->NbCornerNodes() );
+ SMDS_MeshElement::iterator n = face->begin_nodes();
+ for ( size_t i = 0; i < nodes.size(); ++n, ++i )
+ nodes[ i ] = *n;
+
+ // get UVs
+ const SMDS_MeshNode* inFaceNode = 0;
+ if ( helper.HasSeam() )
+ for ( size_t i = 0; ( i < nodes.size() && !inFaceNode ); ++i )
+ if ( !helper.IsSeamShape( nodes[ i ]->getshapeId() ))
+ inFaceNode = nodes[ i ];
+
+ uv.resize( nodes.size() );
+ for ( size_t i = 0; i < nodes.size(); ++i )
+ uv[ i ] = helper.GetNodeUV( F, nodes[ i ], inFaceNode );
+
+ // compare orientation of triangles
+ for ( int iT = 0, nbT = nodes.size()-2; iT < nbT; ++iT )
+ {
+ gp_XY v1 = uv[ iT+1 ] - uv[ 0 ];
+ gp_XY v2 = uv[ iT+2 ] - uv[ 0 ];
+ double area2D = v2 ^ v1;
+ if (( haveBadFaces = ( area2D * prevArea2D < 0 )))
+ break;
+ prevArea2D = area2D;
+ }
+ }
+
+ // Fix faces
+
+ if ( haveBadFaces )
+ {
+ SMESH_MeshEditor editor( helper.GetMesh() );
+
+ TIDSortedElemSet faces;
+ for ( faceIt = smDS->GetElements(); faceIt->more(); )
+ faces.insert( faces.end(), faceIt->next() );
+
+ // choose smoothing algo
+ //SMESH_MeshEditor:: SmoothMethod algo = SMESH_MeshEditor::CENTROIDAL;
+ bool isConcaveBoundary = false;
+ TError err;
+ TSideVector tgtWires =
+ StdMeshers_FaceSide::GetFaceWires( F, *helper.GetMesh(),/*skipMediumNodes=*/0, err);
+ for ( size_t iW = 0; iW < tgtWires.size() && !isConcaveBoundary; ++iW )
+ {
+ TopoDS_Edge prevEdge = tgtWires[iW]->Edge( tgtWires[iW]->NbEdges() - 1 );
+ for ( int iE = 0; iE < tgtWires[iW]->NbEdges() && !isConcaveBoundary; ++iE )
+ {
+ double angle = helper.GetAngle( prevEdge, tgtWires[iW]->Edge( iE ),
+ F, tgtWires[iW]->FirstVertex( iE ));
+ isConcaveBoundary = ( angle < -5. * M_PI / 180. );
+
+ prevEdge = tgtWires[iW]->Edge( iE );
+ }
+ }
+ SMESH_MeshEditor:: SmoothMethod algo =
+ isConcaveBoundary ? SMESH_MeshEditor::CENTROIDAL : SMESH_MeshEditor::LAPLACIAN;
+
+ // smoothing
+ set<const SMDS_MeshNode*> fixedNodes;
+ editor.Smooth( faces, fixedNodes, algo, /*nbIterations=*/ 10,
+ /*theTgtAspectRatio=*/1.0, /*the2D=*/false);
+ }
+ }
+
} // namespace
+
//=======================================================================
//function : Compute
-//purpose :
+//purpose :
//=======================================================================
bool StdMeshers_Projection_2D::Compute(SMESH_Mesh& theMesh, const TopoDS_Shape& theShape)
{
+ _src2tgtNodes.clear();
+
+ MESSAGE("Projection_2D Compute");
if ( !_sourceHypo )
return false;
SMESHDS_Mesh * meshDS = theMesh.GetMeshDS();
// ---------------------------
- // Make subshapes association
+ // Make sub-shapes association
// ---------------------------
- TopoDS_Face tgtFace = TopoDS::Face( theShape.Oriented(TopAbs_FORWARD));
+ 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 );
+ TAssocTool::InitVertexAssociation( _sourceHypo, shape2ShapeMap );
if ( !TAssocTool::FindSubShapeAssociation( tgtFace, tgtMesh, srcShape, srcMesh,
shape2ShapeMap) ||
!shape2ShapeMap.IsBound( tgtFace ))
+ {
+ if ( srcShape.ShapeType() == TopAbs_FACE )
+ {
+ int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
+ int nbE2 = SMESH_MesherHelper::Count( srcShape, TopAbs_EDGE, /*ignoreSame=*/true );
+ if ( nbE1 != nbE2 )
+ return error(COMPERR_BAD_SHAPE,
+ SMESH_Comment("Different number of edges in source and target faces: ")
+ << nbE2 << " and " << nbE1 );
+ }
return error(COMPERR_BAD_SHAPE,"Topology of source and target faces seems different" );
-
+ }
TopoDS_Face srcFace = TopoDS::Face( shape2ShapeMap( tgtFace ).Oriented(TopAbs_FORWARD));
// ----------------------------------------------
SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( tgtFace );
+ string srcMeshError;
if ( tgtMesh == srcMesh ) {
if ( !TAssocTool::MakeComputed( srcSubMesh ))
- return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
+ srcMeshError = TAssocTool::SourceNotComputedError( srcSubMesh, this );
}
else {
if ( !srcSubMesh->IsMeshComputed() )
- return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
+ srcMeshError = TAssocTool::SourceNotComputedError();
}
+ if ( !srcMeshError.empty() )
+ return error(COMPERR_BAD_INPUT_MESH, srcMeshError );
- // --------------------
- // Prepare to mapping
- // --------------------
+ // ===========
+ // Projection
+ // ===========
- SMESH_MesherHelper helper( theMesh );
- helper.SetSubShape( tgtFace );
+ // get ordered src and tgt EDGEs
+ TSideVector srcWires, tgtWires;
+ bool is1DComputed = false; // if any tgt EDGE is meshed
+ TError err = getWires( tgtFace, srcFace, tgtMesh, srcMesh,
+ shape2ShapeMap, srcWires, tgtWires, _src2tgtNodes, is1DComputed );
+ if ( err && !err->IsOK() )
+ return error( err );
- // Check if node projection to a face is needed
- Bnd_B2d uvBox;
- SMDS_ElemIteratorPtr faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
- for ( int nbN = 0; nbN < 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 ) {
- nbN++;
- uvBox.Add( helper.GetNodeUV( srcFace, node ));
- }
- }
- }
- const bool toProjectNodes = ( 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
+ bool done = false;
+
+ if ( !done )
{
- TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
- TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
- reverse = ( ! srcE1.IsSame( srcE1bis ));
+ // try to project from the same face with different location
+ done = projectPartner( tgtFace, srcFace, tgtWires, srcWires,
+ shape2ShapeMap, _src2tgtNodes, is1DComputed );
}
- else if ( nbEdgesInWires.front() == 1 )
+ if ( !done )
{
- // TODO::Compare orientation of curves in a sole edge
- //RETURN_BAD_RESULT("Not implemented case");
+ // projection in case if the faces are similar in 2D space
+ done = projectBy2DSimilarity( tgtFace, srcFace, tgtWires, srcWires,
+ shape2ShapeMap, _src2tgtNodes, is1DComputed);
}
- else
+
+ SMESH_MesherHelper helper( theMesh );
+ helper.SetSubShape( tgtFace );
+
+ if ( !done )
{
- RETURN_BAD_RESULT("Bad result from SMESH_Block::GetOrderedEdges()");
- }
+ _src2tgtNodes.clear();
+ // --------------------
+ // Prepare to mapping
+ // --------------------
+
+ // 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 ));
- // --------------------
- // Perform 2D mapping
- // --------------------
+ // Find the corresponding source and target vertex
+ // and <theReverse> flag needed to call mapper.Apply()
- // Compute mesh on a target face
+ TopoDS_Vertex srcV1, tgtV1;
+ bool reverse = false;
- mapper.Apply( tgtFace, tgtV1, reverse );
- if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
- return error("Can't apply source mesh pattern to the face");
+ if ( _sourceHypo->HasVertexAssociation() ) {
+ srcV1 = _sourceHypo->GetSourceVertex(1);
+ tgtV1 = _sourceHypo->GetTargetVertex(1);
+ } else {
+ srcV1 = TopoDS::Vertex( TopExp_Explorer( srcFace, TopAbs_VERTEX ).Current() );
+ tgtV1 = TopoDS::Vertex( shape2ShapeMap( srcV1, /*isSrc=*/true ));
+ }
+ list< TopoDS_Edge > tgtEdges, srcEdges;
+ list< int > nbEdgesInWires;
+ SMESH_Block::GetOrderedEdges( tgtFace, tgtEdges, nbEdgesInWires, tgtV1 );
+ SMESH_Block::GetOrderedEdges( srcFace, srcEdges, nbEdgesInWires, srcV1 );
- // Create the mesh
+ if ( nbEdgesInWires.front() > 1 ) // possible to find out orientation
+ {
+ TopoDS_Edge srcE1 = srcEdges.front(), tgtE1 = tgtEdges.front();
+ TopoDS_Shape srcE1bis = shape2ShapeMap( tgtE1 );
+ reverse = ( ! srcE1.IsSame( srcE1bis ));
+ if ( reverse &&
+ _sourceHypo->HasVertexAssociation() &&
+ nbEdgesInWires.front() > 2 &&
+ helper.IsRealSeam( tgtEdges.front() ))
+ {
+ // projection to a face with seam EDGE; pb is that GetOrderedEdges()
+ // always puts a seam EDGE first (if possible) and as a result
+ // we can't use only theReverse flag to correctly associate source
+ // and target faces in the mapper. Thus we select srcV1 so that
+ // GetOrderedEdges() to return EDGEs in a needed order
+ list< TopoDS_Edge >::iterator edge = srcEdges.begin();
+ for ( ; edge != srcEdges.end(); ++edge ) {
+ if ( srcE1bis.IsSame( *edge )) {
+ srcV1 = helper.IthVertex( 0, *edge );
+ break;
+ }
+ }
+ }
+ }
+ 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()");
+ }
- 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");
+ // Load pattern from the source face
+ SMESH_Pattern mapper;
+ mapper.Load( srcMesh, srcFace, toProjectNodes, srcV1 );
+ if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
+ return error(COMPERR_BAD_INPUT_MESH,"Can't load mesh pattern from the source face");
- // it will remove mesh built by pattern mapper on edges and vertices
- // in failure case
- MeshCleaner cleaner( tgtSubMesh );
+ // --------------------
+ // Perform 2D mapping
+ // --------------------
- // -------------------------------------------------------------------------
- // mapper doesn't take care of nodes already existing on edges and vertices,
- // so we must merge nodes created by it with existing ones
- // -------------------------------------------------------------------------
+ // Compute mesh on a target face
- SMESH_MeshEditor editor( tgtMesh );
- SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
+ mapper.Apply( tgtFace, tgtV1, reverse );
+ if ( mapper.GetErrorCode() != SMESH_Pattern::ERR_OK )
+ return error("Can't apply source mesh pattern to the face");
- // Make groups of nodes to merge
+ // Create the mesh
- // 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();
+ 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");
- // Sort new and old nodes of a submesh separately
+ // it will remove mesh built by pattern mapper on edges and vertices
+ // in failure case
+ MeshCleaner cleaner( tgtSubMesh );
- bool isSeam = helper.IsRealSeam( sm->GetId() );
+ // -------------------------------------------------------------------------
+ // mapper doesn't take care of nodes already existing on edges and vertices,
+ // so we must merge nodes created by it with existing ones
+ // -------------------------------------------------------------------------
- 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;
+ SMESH_MeshEditor::TListOfListOfNodes groupsOfNodes;
- // mapper puts on a seam edge nodes from 2 edges
- if ( isSeam && ! getBoundaryNodes ( sm, tgtFace, u2nodesOnSeam, seamNodes ))
- RETURN_BAD_RESULT("getBoundaryNodes() failed");
+ // Make groups of nodes to merge
- SMDS_NodeIteratorPtr nIt = smDS->GetNodes();
- while ( nIt->more() )
+ // loop on EDGE and VERTEX sub-meshes of a target FACE
+ SMESH_subMeshIteratorPtr smIt = tgtSubMesh->getDependsOnIterator(/*includeSelf=*/false,
+ /*complexShapeFirst=*/false);
+ while ( smIt->more() )
{
- const SMDS_MeshNode* node = nIt->next();
- bool isOld = isOldNode( node );
+ SMESH_subMesh* sm = smIt->next();
+ SMESHDS_SubMesh* smDS = sm->GetSubMeshDS();
+ if ( !smDS || smDS->NbNodes() == 0 )
+ continue;
+ //if ( !is1DComputed && sm->GetSubShape().ShapeType() == TopAbs_EDGE )
+ // break;
- if ( !isOld && isSeam ) { // new node on a seam edge
- if ( seamNodes.find( node ) != seamNodes.end())
- continue; // node is already in the map
+ 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 treat sm of degen VERTEX
}
- // sort nodes on edges by their position
- map< double, const SMDS_MeshNode* > & pos2nodes = u2nodesMaps[isOld ? OLD_NODES : NEW_NODES];
- switch ( node->GetPosition()->GetTypeOfPosition() )
+ // 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 changed, no more "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() )
{
- 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;
+ const SMDS_MeshNode* node = nIt->next();
+ bool isOld = isOldNode( node );
+
+ if ( !isOld && isSeam ) { // new node on a seam edge
+ if ( seamNodes.count( node ) )
+ 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: {
+ if ( !is1DComputed && !pos2nodes.empty() )
+ u2nodesMaps[isOld ? NEW_NODES : OLD_NODES].insert( make_pair( 0, node ));
+ else
+ pos2nodes.insert( make_pair( 0, node ));
+ break;
+ }
+ case SMDS_TOP_EDGE: {
+ const SMDS_EdgePosition* pos =
+ static_cast<const SMDS_EdgePosition*>(node->GetPosition());
+ pos2nodes.insert( make_pair( pos->GetUParameter(), node ));
+ break;
+ }
+ default:
+ RETURN_BAD_RESULT("Wrong node position type: "<<
+ node->GetPosition()->GetTypeOfPosition());
+ }
}
- default:
- RETURN_BAD_RESULT("Wrong node position type: "<<
- node->GetPosition()->GetTypeOfPosition());
+ const bool mergeNewToOld =
+ ( u2nodesMaps[ NEW_NODES ].size() == u2nodesMaps[ OLD_NODES ].size() );
+ const bool mergeSeamToNew =
+ ( u2nodesMaps[ NEW_NODES ].size() == u2nodesOnSeam.size() );
+
+ if ( !mergeNewToOld )
+ if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
+ u2nodesMaps[ OLD_NODES ].size() > 0 )
+ {
+ u_oldNode = u2nodesMaps[ OLD_NODES ].begin();
+ newEnd = u2nodesMaps[ OLD_NODES ].end();
+ for ( ; u_oldNode != newEnd; ++u_oldNode )
+ 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 ) {
+ const TopoDS_Shape& seam = sm->GetSubShape();
+ if ( u2nodesMaps[ NEW_NODES ].size() > 0 &&
+ u2nodesOnSeam.size() > 0 &&
+ seam.ShapeType() == TopAbs_EDGE )
+ {
+ int nbE1 = SMESH_MesherHelper::Count( tgtFace, TopAbs_EDGE, /*ignoreSame=*/true );
+ int nbE2 = SMESH_MesherHelper::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() ))
+ SMESH_Algo::addBadInputElements
+ ( srcMesh->GetMeshDS()->MeshElements( src2tgtIt.Key() ));
+ return error( COMPERR_BAD_INPUT_MESH,
+ "Different number of nodes on two edges projected to a seam edge" );
+ }
+ }
}
- }
- if ( u2nodesMaps[ NEW_NODES ].size() != u2nodesMaps[ OLD_NODES ].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();
+ if ( mergeNewToOld )
+ 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 ( mergeSeamToNew )
+ groupsOfNodes.back().push_back( (u_newOnSeam++)->second );
+ }
+ else if ( mergeSeamToNew )
+ for ( ; u_newNode != newEnd; ++u_newNode, ++u_newOnSeam )
+ {
+ groupsOfNodes.push_back( list< const SMDS_MeshNode* >() );
+ groupsOfNodes.back().push_back( u_newNode->second );
+ groupsOfNodes.back().push_back( u_newOnSeam->second );
+ }
+
+ } // loop on EDGE and VERTEX submeshes of a target FACE
+
+ // Merge
+
+ SMESH_MeshEditor editor( tgtMesh );
+ int nbFaceBeforeMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
+ editor.MergeNodes( groupsOfNodes );
+ int nbFaceAtferMerge = tgtSubMesh->GetSubMeshDS()->NbElements();
+ if ( nbFaceBeforeMerge != nbFaceAtferMerge && !helper.HasDegeneratedEdges() )
+ return error(COMPERR_BAD_INPUT_MESH, "Probably invalid node parameters on geom faces");
+
+
+ // ----------------------------------------------------------------
+ // The mapper can create distorted faces by placing nodes out of the FACE
+ // boundary -- fix bad faces by smoothing
+ // ----------------------------------------------------------------
+
+ fixDistortedFaces( helper, tgtWires );
+
+ // ----------------------------------------------------------------
+ // The mapper can't create quadratic elements, so convert if needed
+ // ----------------------------------------------------------------
+
+ faceIt = srcSubMesh->GetSubMeshDS()->GetElements();
+ bool srcIsQuad = faceIt->next()->IsQuadratic();
+ faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
+ bool tgtIsQuad = faceIt->next()->IsQuadratic();
+ if ( srcIsQuad && !tgtIsQuad )
{
- 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;
+ TIDSortedElemSet tgtFaces;
+ faceIt = tgtSubMesh->GetSubMeshDS()->GetElements();
+ while ( faceIt->more() )
+ tgtFaces.insert( tgtFaces.end(), faceIt->next() );
- RETURN_BAD_RESULT("Different nb of old and new nodes on shape #"<< sm->GetId() <<" "<<
- u2nodesMaps[ OLD_NODES ].size() << " != " <<
- u2nodesMaps[ NEW_NODES ].size());
+ editor.ConvertToQuadratic(/*theForce3d=*/false, tgtFaces, false);
}
- 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
+ cleaner.Release(); // not to remove mesh
+
+ } // end of projection using Pattern mapping
- 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;
+ TopoDS_Face face = TopoDS::Face( theShape );
if ( !theMesh.IsMainShape( tgtFace ))
{
// find the main shape
}
}
// Fix orientation
- if ( SMESH_Algo::IsReversedSubMesh( face, meshDS ))
+ if ( helper.IsReversedSubMesh( face ))
{
+ SMESH_MeshEditor editor( tgtMesh );
SMDS_ElemIteratorPtr eIt = meshDS->MeshElements( face )->GetElements();
while ( eIt->more() ) {
const SMDS_MeshElement* e = eIt->next();
}
}
- 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 sub-shapes 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 );
+ 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/evaluated
+ // -------------------------------------------------------
+
+ std::vector<int> aVec;
+
+ SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( srcFace );
+ if ( srcSubMesh->IsMeshComputed() )
+ {
+ aVec.resize( SMDSEntity_Last, 0 );
+ aVec[SMDSEntity_Node] = srcSubMesh->GetSubMeshDS()->NbNodes();
+
+ SMDS_ElemIteratorPtr elemIt = srcSubMesh->GetSubMeshDS()->GetElements();
+ while ( elemIt->more() )
+ aVec[ elemIt->next()->GetEntityType() ]++;
+ }
+ else
+ {
+ MapShapeNbElems tmpResMap;
+ MapShapeNbElems& srcResMap = (srcMesh == tgtMesh) ? aResMap : tmpResMap;
+ if ( !_gen->Evaluate( *srcMesh, srcShape, srcResMap ))
+ return error(COMPERR_BAD_INPUT_MESH,"Source mesh not evaluatable");
+ aVec = srcResMap[ srcSubMesh ];
+ if ( aVec.empty() )
+ return error(COMPERR_BAD_INPUT_MESH,"Source mesh is wrongly evaluated");
+ }
+
+ 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
