-// 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_MEFISTO_2D.cxx
// Moved here from SMESH_MEFISTO_2D.cxx
//
#include "StdMeshers_MEFISTO_2D.hxx"
+#include "SMDS_EdgePosition.hxx"
+#include "SMDS_MeshElement.hxx"
+#include "SMDS_MeshNode.hxx"
+#include "SMESH_Comment.hxx"
#include "SMESH_Gen.hxx"
#include "SMESH_Mesh.hxx"
-#include "SMESH_subMesh.hxx"
-#include "SMESH_Block.hxx"
#include "SMESH_MesherHelper.hxx"
-#include "SMESH_Comment.hxx"
-
+#include "SMESH_subMesh.hxx"
#include "StdMeshers_FaceSide.hxx"
-#include "StdMeshers_MaxElementArea.hxx"
#include "StdMeshers_LengthFromEdges.hxx"
+#include "StdMeshers_MaxElementArea.hxx"
+#include "StdMeshers_ViscousLayers2D.hxx"
+
+#include "utilities.h"
#include "Rn.h"
#include "aptrte.h"
-#include "SMDS_MeshElement.hxx"
-#include "SMDS_MeshNode.hxx"
-#include "SMDS_EdgePosition.hxx"
-#include "SMDS_FacePosition.hxx"
-
-#include "utilities.h"
-
+#include <BRepGProp.hxx>
#include <BRepTools.hxx>
#include <BRep_Tool.hxx>
+#include <GProp_GProps.hxx>
#include <Geom2d_Curve.hxx>
+#include <Geom_Curve.hxx>
#include <Geom_Surface.hxx>
+#include <Precision.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Iterator.hxx>
+#include <TopoDS_Wire.hxx>
#include <gp_Pnt2d.hxx>
using namespace std;
+#ifdef _DEBUG_
+//#define DUMP_POINTS // to print coordinates of MEFISTO input
+#endif
+
//=============================================================================
/*!
*
_shapeType = (1 << TopAbs_FACE);
_compatibleHypothesis.push_back("MaxElementArea");
_compatibleHypothesis.push_back("LengthFromEdges");
+ _compatibleHypothesis.push_back("ViscousLayers2D");
_edgeLength = 0;
_maxElementArea = 0;
_hypMaxElementArea = NULL;
_hypLengthFromEdges = NULL;
- myTool = 0;
+ _helper = 0;
}
//=============================================================================
// helper builds quadratic mesh if necessary
SMESH_MesherHelper helper(aMesh);
- myTool = &helper;
- _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
- const bool ignoreMediumNodes = _quadraticMesh;
+ _helper = &helper;
+ _quadraticMesh = _helper->IsQuadraticSubMesh(aShape);
+ const bool skipMediumNodes = _quadraticMesh;
+
+ // build viscous layers if required
+ SMESH_ProxyMesh::Ptr proxyMesh = StdMeshers_ViscousLayers2D::Compute( aMesh, F );
+ if ( !proxyMesh )
+ return false;
// get all edges of a face
TError problem;
- TWireVector wires = StdMeshers_FaceSide::GetFaceWires( F, aMesh, ignoreMediumNodes, problem );
+ TWireVector wires =
+ StdMeshers_FaceSide::GetFaceWires( F, aMesh, skipMediumNodes, problem, proxyMesh );
int nbWires = wires.size();
if ( problem && !problem->IsOK() ) return error( problem );
if ( nbWires == 0 ) return error( "Problem in StdMeshers_FaceSide::GetFaceWires()");
Z nutysu = 1; // 1: il existe un fonction areteideale_()
// Z nutysu=0; // 0: on utilise aretmx
R aretmx = _edgeLength; // longueur max aretes future triangulation
+ if ( _hypMaxElementArea )
+ aretmx *= 1.5;
nblf = nbWires;
return isOk;
}
+
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
+
+bool StdMeshers_MEFISTO_2D::Evaluate(SMESH_Mesh & aMesh,
+ const TopoDS_Shape & aShape,
+ MapShapeNbElems& aResMap)
+{
+ MESSAGE("StdMeshers_MEFISTO_2D::Evaluate");
+
+ TopoDS_Face F = TopoDS::Face(aShape.Oriented(TopAbs_FORWARD));
+
+ double aLen = 0.0;
+ int NbSeg = 0;
+ bool IsQuadratic = false;
+ bool IsFirst = true;
+ TopExp_Explorer exp(F,TopAbs_EDGE);
+ for(; exp.More(); exp.Next()) {
+ TopoDS_Edge E = TopoDS::Edge(exp.Current());
+ MapShapeNbElemsItr anIt = aResMap.find( aMesh.GetSubMesh(E) );
+ if( anIt == aResMap.end() ) continue;
+ std::vector<int> aVec = (*anIt).second;
+ int nbe = Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
+ NbSeg += nbe;
+ if(IsFirst) {
+ IsQuadratic = ( aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge] );
+ IsFirst = false;
+ }
+ double a,b;
+ TopLoc_Location L;
+ Handle(Geom_Curve) C = BRep_Tool::Curve(E,L,a,b);
+ gp_Pnt P1;
+ C->D0(a,P1);
+ double dp = (b-a)/nbe;
+ for(int i=1; i<=nbe; i++) {
+ gp_Pnt P2;
+ C->D0(a+i*dp,P2);
+ aLen += P1.Distance(P2);
+ P1 = P2;
+ }
+ }
+ if(NbSeg<1) {
+ std::vector<int> aResVec(SMDSEntity_Last);
+ for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aResVec[i] = 0;
+ SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
+ aResMap.insert(std::make_pair(sm,aResVec));
+ SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
+ smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,
+ "Submesh can not be evaluated",this));
+ return false;
+ }
+ aLen = aLen/NbSeg; // middle length
+
+ _edgeLength = Precision::Infinite();
+ double tmpLength = Min( _edgeLength, aLen );
+
+ GProp_GProps G;
+ BRepGProp::SurfaceProperties(aShape,G);
+ double anArea = G.Mass();
+
+ int nbFaces = Precision::IsInfinite( tmpLength ) ? 0 :
+ (int)( anArea/(tmpLength*tmpLength*sqrt(3.)/4) );
+ int nbNodes = (int) ( nbFaces*3 - (NbSeg-1)*2 ) / 6;
+
+ std::vector<int> aVec(SMDSEntity_Last);
+ for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i] = 0;
+ if(IsQuadratic) {
+ aVec[SMDSEntity_Quad_Triangle] = nbFaces;
+ aVec[SMDSEntity_Node] = (int)( nbNodes + nbFaces*3 - (NbSeg-1) );
+ }
+ else {
+ aVec[SMDSEntity_Node] = nbNodes;
+ aVec[SMDSEntity_Triangle] = nbFaces;
+ }
+ SMESH_subMesh * sm = aMesh.GetSubMesh(aShape);
+ aResMap.insert(std::make_pair(sm,aVec));
+
+ return true;
+}
+
+
//=======================================================================
//function : fixOverlappedLinkUV
//purpose : prevent failure due to overlapped adjacent links
if ( theCreateQuadratic && SMESH_MesherHelper::IsMedium( node, SMDSAbs_Edge ))
continue;
const SMDS_EdgePosition* epos =
- static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
+ static_cast<const SMDS_EdgePosition*>(node->GetPosition());
double u = epos->GetUParameter();
if ( u < umin )
umin = u;
TopTools_IndexedDataMapOfShapeListOfShape VWMap;
if ( wires.size() > 1 )
{
- F = TopoDS::Face( myTool->GetSubShape() );
+ F = TopoDS::Face( _helper->GetSubShape() );
TopExp::MapShapesAndAncestors( F, TopAbs_VERTEX, TopAbs_WIRE, VWMap );
int nbVertices = 0;
for ( int iW = 0; iW < wires.size(); ++iW )
// set UV
uvslf[m].x = uvPt->u * scalex;
uvslf[m].y = uvPt->v * scaley;
- if ( uvPt->node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX )
+ switch ( uvPt->node->GetPosition()->GetTypeOfPosition())
+ {
+ case SMDS_TOP_VERTEX:
mOnVertex.push_back( m );
+ break;
+ case SMDS_TOP_EDGE:
+ // In order to detect degenerated faces easily, we replace
+ // nodes on a degenerated edge by node on the vertex of that edge
+ if ( _helper->IsDegenShape( uvPt->node->getshapeId() ))
+ {
+ int edgeID = uvPt->node->getshapeId();
+ SMESH_subMesh* edgeSM = _helper->GetMesh()->GetSubMeshContaining( edgeID );
+ SMESH_subMeshIteratorPtr smIt = edgeSM->getDependsOnIterator( /*includeSelf=*/0,
+ /*complexShapeFirst=*/0);
+ if ( smIt->more() )
+ {
+ SMESH_subMesh* vertexSM = smIt->next();
+ SMDS_NodeIteratorPtr nIt = vertexSM->GetSubMeshDS()->GetNodes();
+ if ( nIt->more() )
+ mefistoToDS[m] = nIt->next();
+ }
+ }
+ break;
+ default:;
+ }
m++;
}
int m = *mIt;
if ( iW && !VWMap.IsEmpty()) { // except outer wire
// avoid passing same uv point for a vertex common to 2 wires
- int vID = mefistoToDS[m]->GetPosition()->GetShapeId();
- TopoDS_Vertex V = TopoDS::Vertex( myTool->GetMeshDS()->IndexToShape( vID ));
- if ( fixCommonVertexUV( uvslf[m], V, F, VWMap, *myTool->GetMesh(),
+ int vID = mefistoToDS[m]->getshapeId();
+ TopoDS_Vertex V = TopoDS::Vertex( _helper->GetMeshDS()->IndexToShape( vID ));
+ if ( fixCommonVertexUV( uvslf[m], V, F, VWMap, *_helper->GetMesh(),
scalex, scaley, _quadraticMesh )) {
myNodesOnCommonV.push_back( mefistoToDS[m] );
continue;
}
}
+#ifdef DUMP_POINTS
+ cout << "MEFISTO INPUT************" << endl;
+ for ( int i =0; i < m; ++i )
+ cout << i << ": \t" << uvslf[i].x << ", " << uvslf[i].y
+ << " Node " << mefistoToDS[i]->GetID()<< endl;
+#endif
+
return true;
}
ASSERT(scaley);
}
+// namespace
+// {
+// bool isDegenTria( const SMDS_MeshNode * nn[3] )
+// {
+// SMESH_TNodeXYZ p1( nn[0] );
+// SMESH_TNodeXYZ p2( nn[1] );
+// SMESH_TNodeXYZ p3( nn[2] );
+// gp_XYZ vec1 = p2 - p1;
+// gp_XYZ vec2 = p3 - p1;
+// gp_XYZ cross = vec1 ^ vec2;
+// const double eps = 1e-100;
+// return ( fabs( cross.X() ) < eps &&
+// fabs( cross.Y() ) < eps &&
+// fabs( cross.Z() ) < eps );
+// }
+// }
+
//=============================================================================
/*!
*
vector< const SMDS_MeshNode*>&mefistoToDS,
double scalex, double scaley)
{
- SMESHDS_Mesh * meshDS = myTool->GetMeshDS();
- int faceID = myTool->GetSubShapeID();
+ _helper->SetElementsOnShape( true );
- TopoDS_Face F = TopoDS::Face( myTool->GetSubShape() );
+ TopoDS_Face F = TopoDS::Face( _helper->GetSubShape() );
Handle(Geom_Surface) S = BRep_Tool::Surface( F );
+ //const size_t nbInputNodes = mefistoToDS.size();
+
Z n = mefistoToDS.size(); // nb input points
mefistoToDS.resize( nbst );
for ( ; n < nbst; n++)
double v = uvst[n][1] / scaley;
gp_Pnt P = S->Value(u, v);
- SMDS_MeshNode * node = meshDS->AddNode(P.X(), P.Y(), P.Z());
- meshDS->SetNodeOnFace(node, faceID, u, v);
-
- //MESSAGE(P.X()<<" "<<P.Y()<<" "<<P.Z());
- mefistoToDS[n] = node;
- //MESSAGE("NEW: "<<n<<" "<<mefistoToDS[n+1]);
+ mefistoToDS[n] = _helper->AddNode( P.X(), P.Y(), P.Z(), 0, u, v );
}
}
// triangle points must be in trigonometric order if face is Forward
// else they must be put clockwise
- bool triangleIsWellOriented = ( F.Orientation() == TopAbs_FORWARD );
+ int i1 = 1, i2 = 2;
+ if ( F.Orientation() != TopAbs_FORWARD )
+ std::swap( i1, i2 );
+ const SMDS_MeshNode * nn[3];
for (n = 1; n <= nbt; n++)
{
- const SMDS_MeshNode * n1 = mefistoToDS[ nust[m++] - 1 ];
- const SMDS_MeshNode * n2 = mefistoToDS[ nust[m++] - 1 ];
- const SMDS_MeshNode * n3 = mefistoToDS[ nust[m++] - 1 ];
+ // const bool allNodesAreOld = ( nust[m + 0] <= nbInputNodes &&
+ // nust[m + 1] <= nbInputNodes &&
+ // nust[m + 2] <= nbInputNodes );
+ nn[ 0 ] = mefistoToDS[ nust[m++] - 1 ];
+ nn[ 1 ] = mefistoToDS[ nust[m++] - 1 ];
+ nn[ 2 ] = mefistoToDS[ nust[m++] - 1 ];
+ m++;
- SMDS_MeshElement * elt;
- if (triangleIsWellOriented)
- elt = myTool->AddFace(n1, n2, n3);
- else
- elt = myTool->AddFace(n1, n3, n2);
+ // avoid creating degenetrated faces
+ bool isDegen = ( _helper->HasDegeneratedEdges() &&
+ ( nn[0] == nn[1] || nn[1] == nn[2] || nn[2] == nn[0] ));
- meshDS->SetMeshElementOnShape(elt, faceID);
- m++;
+ // It was an attemp to fix a problem of a zero area face whose all nodes
+ // are on one staight EDGE. But omitting this face makes a hole in the mesh :(
+ // if ( !isDegen && allNodesAreOld )
+ // isDegen = isDegenTria( nn );
+
+ if ( !isDegen )
+ _helper->AddFace( nn[0], nn[i1], nn[i2] );
}
// remove bad elements built on vertices shared by wires
nbSame++;
if (nbSame > 1) {
MESSAGE( "RM bad element " << elem->GetID());
- meshDS->RemoveElement( elem );
+ _helper->GetMeshDS()->RemoveElement( elem );
}
}
}
