719 lines
24 KiB
C++
719 lines
24 KiB
C++
// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// File : NETGENPlugin_NETGEN_2D_ONLY.cxx
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// Author : Edward AGAPOV (OCC)
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// Project : SALOME
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//
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#include "NETGENPlugin_NETGEN_2D_ONLY.hxx"
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#include "NETGENPlugin_Mesher.hxx"
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#include "NETGENPlugin_Hypothesis_2D.hxx"
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#include <SMDS_MeshElement.hxx>
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#include <SMDS_MeshNode.hxx>
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#include <SMESHDS_Mesh.hxx>
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#include <SMESH_Comment.hxx>
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#include <SMESH_Gen.hxx>
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#include <SMESH_Mesh.hxx>
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#include <SMESH_MesherHelper.hxx>
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#include <SMESH_subMesh.hxx>
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#include <StdMeshers_FaceSide.hxx>
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#include <StdMeshers_LengthFromEdges.hxx>
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#include <StdMeshers_MaxElementArea.hxx>
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#include <StdMeshers_QuadranglePreference.hxx>
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#include <StdMeshers_ViscousLayers2D.hxx>
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#include <Precision.hxx>
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#include <Standard_ErrorHandler.hxx>
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#include <Standard_Failure.hxx>
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#include <utilities.h>
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#include <list>
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#include <vector>
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#include <limits>
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/*
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Netgen include files
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*/
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namespace nglib {
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#include <nglib.h>
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}
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#ifndef OCCGEOMETRY
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#define OCCGEOMETRY
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#endif
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#include <occgeom.hpp>
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#include <meshing.hpp>
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//#include <meshtype.hpp>
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namespace netgen {
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#ifdef NETGEN_V5
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extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, MeshingParameters&, int, int);
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#else
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extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
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#endif
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extern MeshingParameters mparam;
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extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);
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}
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using namespace std;
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using namespace netgen;
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using namespace nglib;
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//=============================================================================
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/*!
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*
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*/
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//=============================================================================
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NETGENPlugin_NETGEN_2D_ONLY::NETGENPlugin_NETGEN_2D_ONLY(int hypId,
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SMESH_Gen* gen)
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: SMESH_2D_Algo(hypId, gen)
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{
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_name = "NETGEN_2D_ONLY";
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_shapeType = (1 << TopAbs_FACE);// 1 bit /shape type
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_onlyUnaryInput = false; // treat all FACEs at once
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_compatibleHypothesis.push_back("MaxElementArea");
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_compatibleHypothesis.push_back("LengthFromEdges");
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_compatibleHypothesis.push_back("QuadranglePreference");
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_compatibleHypothesis.push_back("NETGEN_Parameters_2D");
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_compatibleHypothesis.push_back("ViscousLayers2D");
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_hypMaxElementArea = 0;
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_hypLengthFromEdges = 0;
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_hypQuadranglePreference = 0;
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_hypParameters = 0;
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}
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//=============================================================================
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/*!
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*
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*/
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//=============================================================================
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NETGENPlugin_NETGEN_2D_ONLY::~NETGENPlugin_NETGEN_2D_ONLY()
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{
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MESSAGE("NETGENPlugin_NETGEN_2D_ONLY::~NETGENPlugin_NETGEN_2D_ONLY");
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}
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//=============================================================================
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/*!
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*
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*/
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//=============================================================================
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bool NETGENPlugin_NETGEN_2D_ONLY::CheckHypothesis (SMESH_Mesh& aMesh,
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const TopoDS_Shape& aShape,
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Hypothesis_Status& aStatus)
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{
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_hypMaxElementArea = 0;
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_hypLengthFromEdges = 0;
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_hypQuadranglePreference = 0;
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_hypParameters = 0;
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_progressByTic = -1;
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const list<const SMESHDS_Hypothesis*>& hyps = GetUsedHypothesis(aMesh, aShape, false);
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if (hyps.empty())
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{
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aStatus = HYP_OK; //SMESH_Hypothesis::HYP_MISSING;
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return true; // (PAL13464) can work with no hypothesis, LengthFromEdges is default one
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}
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aStatus = HYP_MISSING;
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bool hasVL = false;
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list<const SMESHDS_Hypothesis*>::const_iterator ith;
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for (ith = hyps.begin(); ith != hyps.end(); ++ith )
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{
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const SMESHDS_Hypothesis* hyp = (*ith);
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string hypName = hyp->GetName();
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if ( hypName == "MaxElementArea")
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_hypMaxElementArea = static_cast<const StdMeshers_MaxElementArea*> (hyp);
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else if ( hypName == "LengthFromEdges" )
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_hypLengthFromEdges = static_cast<const StdMeshers_LengthFromEdges*> (hyp);
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else if ( hypName == "QuadranglePreference" )
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_hypQuadranglePreference = static_cast<const StdMeshers_QuadranglePreference*>(hyp);
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else if ( hypName == "NETGEN_Parameters_2D" )
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_hypParameters = static_cast<const NETGENPlugin_Hypothesis_2D*>(hyp);
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else if ( hypName == StdMeshers_ViscousLayers2D::GetHypType() )
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hasVL = true;
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else {
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aStatus = HYP_INCOMPATIBLE;
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return false;
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}
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}
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int nbHyps = bool(_hypMaxElementArea) + bool(_hypLengthFromEdges) + bool(_hypParameters );
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if ( nbHyps > 1 )
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aStatus = HYP_CONCURENT;
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else if ( hasVL )
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error( StdMeshers_ViscousLayers2D::CheckHypothesis( aMesh, aShape, aStatus ));
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else
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aStatus = HYP_OK;
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if ( aStatus == HYP_OK && _hypParameters && _hypQuadranglePreference )
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{
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aStatus = HYP_INCOMPAT_HYPS;
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return error(SMESH_Comment("\"") << _hypQuadranglePreference->GetName()
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<< "\" and \"" << _hypParameters->GetName()
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<< "\" are incompatible hypotheses");
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}
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return ( aStatus == HYP_OK );
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}
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// namespace
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// {
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// void limitSize( netgen::Mesh* ngMesh,
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// const double maxh )
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// {
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// // get bnd box
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// netgen::Point3d pmin, pmax;
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// ngMesh->GetBox( pmin, pmax, 0 );
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// const double dx = pmax.X() - pmin.X();
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// const double dy = pmax.Y() - pmin.Y();
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// const double dz = pmax.Z() - pmin.Z();
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// const int nbX = Max( 2, int( dx / maxh * 3 ));
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// const int nbY = Max( 2, int( dy / maxh * 3 ));
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// const int nbZ = Max( 2, int( dz / maxh * 3 ));
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// if ( ! & ngMesh->LocalHFunction() )
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// ngMesh->SetLocalH( pmin, pmax, 0.1 );
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// netgen::Point3d p;
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// for ( int i = 0; i <= nbX; ++i )
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// {
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// p.X() = pmin.X() + i * dx / nbX;
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// for ( int j = 0; j <= nbY; ++j )
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// {
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// p.Y() = pmin.Y() + j * dy / nbY;
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// for ( int k = 0; k <= nbZ; ++k )
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// {
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// p.Z() = pmin.Z() + k * dz / nbZ;
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// ngMesh->RestrictLocalH( p, maxh );
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// }
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// }
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// }
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// }
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// }
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//=============================================================================
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/*!
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*Here we are going to use the NETGEN mesher
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*/
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//=============================================================================
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bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
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const TopoDS_Shape& aShape)
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{
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netgen::multithread.terminate = 0;
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//netgen::multithread.task = "Surface meshing";
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SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
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SMESH_MesherHelper helper(aMesh);
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helper.SetElementsOnShape( true );
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NETGENPlugin_NetgenLibWrapper ngLib;
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ngLib._isComputeOk = false;
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netgen::Mesh ngMeshNoLocSize;
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netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh, & ngMeshNoLocSize };
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netgen::OCCGeometry occgeoComm;
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// min / max sizes are set as follows:
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// if ( _hypParameters )
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// min and max are defined by the user
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// else if ( _hypLengthFromEdges )
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// min = aMesher.GetDefaultMinSize()
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// max = average segment len of a FACE
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// else if ( _hypMaxElementArea )
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// min = aMesher.GetDefaultMinSize()
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// max = f( _hypMaxElementArea )
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// else
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// min = aMesher.GetDefaultMinSize()
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// max = max segment len of a FACE
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NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
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aMesher.SetParameters( _hypParameters ); // _hypParameters -> netgen::mparam
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const bool toOptimize = _hypParameters ? _hypParameters->GetOptimize() : true;
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if ( _hypMaxElementArea )
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{
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netgen::mparam.maxh = sqrt( 2. * _hypMaxElementArea->GetMaxArea() / sqrt(3.0) );
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}
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if ( _hypQuadranglePreference )
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netgen::mparam.quad = true;
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// local size is common for all FACEs in aShape?
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const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && netgen::mparam.uselocalh );
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const bool isDefaultHyp = ( !_hypLengthFromEdges && !_hypMaxElementArea && !_hypParameters );
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if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
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{
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//list< SMESH_subMesh* > meshedSM[4]; --> all sub-shapes are added to occgeoComm
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aMesher.PrepareOCCgeometry( occgeoComm, aShape, aMesh );//, meshedSM );
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// local size set at MESHCONST_ANALYSE step depends on
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// minh, face_maxh, grading and curvaturesafety; find minh if not set by the user
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if ( !_hypParameters || netgen::mparam.minh < DBL_MIN )
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{
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if ( !_hypParameters )
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netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam() / 3.;
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netgen::mparam.minh = aMesher.GetDefaultMinSize( aShape, netgen::mparam.maxh );
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}
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// set local size depending on curvature and NOT closeness of EDGEs
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netgen::occparam.resthcloseedgeenable = false;
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//netgen::occparam.resthcloseedgefac = 1.0 + netgen::mparam.grading;
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occgeoComm.face_maxh = netgen::mparam.maxh;
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netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
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occgeoComm.emap.Clear();
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occgeoComm.vmap.Clear();
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// set local size according to size of existing segments
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const double factor = netgen::occparam.resthcloseedgefac;
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TopTools_IndexedMapOfShape edgeMap;
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TopExp::MapShapes( aMesh.GetShapeToMesh(), TopAbs_EDGE, edgeMap );
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for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
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{
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const TopoDS_Shape& edge = edgeMap( iE );
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if ( SMESH_Algo::isDegenerated( TopoDS::Edge( edge )))
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continue;
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SMESHDS_SubMesh* smDS = meshDS->MeshElements( edge );
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if ( !smDS ) continue;
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SMDS_ElemIteratorPtr segIt = smDS->GetElements();
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while ( segIt->more() )
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{
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const SMDS_MeshElement* seg = segIt->next();
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SMESH_TNodeXYZ n1 = seg->GetNode(0);
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SMESH_TNodeXYZ n2 = seg->GetNode(1);
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gp_XYZ p = 0.5 * ( n1 + n2 );
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netgen::Point3d pi(p.X(), p.Y(), p.Z());
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ngMeshes[0]->RestrictLocalH( pi, factor * ( n1 - n2 ).Modulus() );
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}
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}
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// set local size defined on shapes
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aMesher.SetLocalSize( occgeoComm, *ngMeshes[0] );
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try {
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ngMeshes[0]->LoadLocalMeshSize( mparam.meshsizefilename );
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} catch (NgException & ex) {
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return error( COMPERR_BAD_PARMETERS, ex.What() );
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}
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}
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netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
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// ==================
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// Loop on all FACEs
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// ==================
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vector< const SMDS_MeshNode* > nodeVec;
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TopExp_Explorer fExp( aShape, TopAbs_FACE );
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for ( int iF = 0; fExp.More(); fExp.Next(), ++iF )
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{
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TopoDS_Face F = TopoDS::Face( fExp.Current() /*.Oriented( TopAbs_FORWARD )*/);
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int faceID = meshDS->ShapeToIndex( F );
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SMESH_ComputeErrorPtr& faceErr = aMesh.GetSubMesh( F )->GetComputeError();
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_quadraticMesh = helper.IsQuadraticSubMesh( F );
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const bool ignoreMediumNodes = _quadraticMesh;
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// build viscous layers if required
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if ( F.Orientation() != TopAbs_FORWARD &&
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F.Orientation() != TopAbs_REVERSED )
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F.Orientation( TopAbs_FORWARD ); // avoid pb with TopAbs_INTERNAL
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SMESH_ProxyMesh::Ptr proxyMesh = StdMeshers_ViscousLayers2D::Compute( aMesh, F );
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if ( !proxyMesh )
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continue;
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// ------------------------
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// get all EDGEs of a FACE
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// ------------------------
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TSideVector wires =
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StdMeshers_FaceSide::GetFaceWires( F, aMesh, ignoreMediumNodes, faceErr, proxyMesh );
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if ( faceErr && !faceErr->IsOK() )
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continue;
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int nbWires = wires.size();
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if ( nbWires == 0 )
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{
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faceErr.reset
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( new SMESH_ComputeError
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( COMPERR_ALGO_FAILED, "Problem in StdMeshers_FaceSide::GetFaceWires()" ));
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continue;
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}
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if ( wires[0]->NbSegments() < 3 ) // ex: a circle with 2 segments
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{
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faceErr.reset
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( new SMESH_ComputeError
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( COMPERR_BAD_INPUT_MESH, SMESH_Comment("Too few segments: ")<<wires[0]->NbSegments()) );
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continue;
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}
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// ----------------------
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// compute maxh of a FACE
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// ----------------------
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if ( !_hypParameters )
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{
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double edgeLength = 0;
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if (_hypLengthFromEdges )
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{
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// compute edgeLength as an average segment length
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int nbSegments = 0;
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for ( int iW = 0; iW < nbWires; ++iW )
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{
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edgeLength += wires[ iW ]->Length();
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nbSegments += wires[ iW ]->NbSegments();
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}
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if ( nbSegments )
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edgeLength /= nbSegments;
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netgen::mparam.maxh = edgeLength;
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}
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else if ( isDefaultHyp )
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{
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// set edgeLength by a longest segment
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double maxSeg2 = 0;
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for ( int iW = 0; iW < nbWires; ++iW )
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{
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const UVPtStructVec& points = wires[ iW ]->GetUVPtStruct();
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if ( points.empty() )
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return error( COMPERR_BAD_INPUT_MESH );
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gp_Pnt pPrev = SMESH_TNodeXYZ( points[0].node );
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for ( size_t i = 1; i < points.size(); ++i )
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{
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gp_Pnt p = SMESH_TNodeXYZ( points[i].node );
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maxSeg2 = Max( maxSeg2, p.SquareDistance( pPrev ));
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pPrev = p;
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}
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}
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edgeLength = sqrt( maxSeg2 ) * 1.05;
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netgen::mparam.maxh = edgeLength;
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}
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if ( netgen::mparam.maxh < DBL_MIN )
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netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam();
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if ( !isCommonLocalSize )
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{
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netgen::mparam.minh = aMesher.GetDefaultMinSize( F, netgen::mparam.maxh );
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}
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}
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// prepare occgeom
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netgen::OCCGeometry occgeom;
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occgeom.shape = F;
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occgeom.fmap.Add( F );
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occgeom.CalcBoundingBox();
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occgeom.facemeshstatus.SetSize(1);
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occgeom.facemeshstatus = 0;
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occgeom.face_maxh_modified.SetSize(1);
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occgeom.face_maxh_modified = 0;
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occgeom.face_maxh.SetSize(1);
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occgeom.face_maxh = netgen::mparam.maxh;
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// -------------------------
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// Fill netgen mesh
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// -------------------------
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// MESHCONST_ANALYSE step may lead to a failure, so we make an attempt
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// w/o MESHCONST_ANALYSE at the second loop
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int err = 0;
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enum { LOC_SIZE, NO_LOC_SIZE };
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int iLoop = isCommonLocalSize ? 0 : 1;
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for ( ; iLoop < 2; iLoop++ )
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{
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//bool isMESHCONST_ANALYSE = false;
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InitComputeError();
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netgen::Mesh * ngMesh = ngMeshes[ iLoop ];
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ngMesh->DeleteMesh();
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if ( iLoop == NO_LOC_SIZE )
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{
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ngMesh->SetGlobalH ( mparam.maxh );
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ngMesh->SetMinimalH( mparam.minh );
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Box<3> bb = occgeom.GetBoundingBox();
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bb.Increase (bb.Diam()/10);
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ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparam.grading);
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aMesher.SetLocalSize( occgeom, *ngMesh );
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try {
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ngMesh->LoadLocalMeshSize( mparam.meshsizefilename );
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} catch (NgException & ex) {
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return error( COMPERR_BAD_PARMETERS, ex.What() );
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}
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}
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nodeVec.clear();
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faceErr = aMesher.AddSegmentsToMesh( *ngMesh, occgeom, wires, helper, nodeVec,
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/*overrideMinH=*/!_hypParameters);
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if ( faceErr && !faceErr->IsOK() )
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break;
|
|
|
|
//if ( !isCommonLocalSize )
|
|
//limitSize( ngMesh, mparam.maxh * 0.8);
|
|
|
|
// -------------------------
|
|
// Generate surface mesh
|
|
// -------------------------
|
|
|
|
const int startWith = MESHCONST_MESHSURFACE;
|
|
const int endWith = toOptimize ? MESHCONST_OPTSURFACE : MESHCONST_MESHSURFACE;
|
|
|
|
SMESH_Comment str;
|
|
try {
|
|
OCC_CATCH_SIGNALS;
|
|
|
|
#ifdef NETGEN_V5
|
|
err = netgen::OCCGenerateMesh(occgeom, ngMesh, netgen::mparam, startWith, endWith);
|
|
#else
|
|
char *optstr = 0;
|
|
err = netgen::OCCGenerateMesh(occgeom, ngMesh, startWith, endWith, optstr);
|
|
#endif
|
|
if ( netgen::multithread.terminate )
|
|
return false;
|
|
if ( err )
|
|
str << "Error in netgen::OCCGenerateMesh() at " << netgen::multithread.task;
|
|
}
|
|
catch (Standard_Failure& ex)
|
|
{
|
|
err = 1;
|
|
str << "Exception in netgen::OCCGenerateMesh()"
|
|
<< " at " << netgen::multithread.task
|
|
<< ": " << ex.DynamicType()->Name();
|
|
if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
|
|
str << ": " << ex.GetMessageString();
|
|
}
|
|
catch (...) {
|
|
err = 1;
|
|
str << "Exception in netgen::OCCGenerateMesh()"
|
|
<< " at " << netgen::multithread.task;
|
|
}
|
|
if ( err )
|
|
{
|
|
if ( aMesher.FixFaceMesh( occgeom, *ngMesh, 1 ))
|
|
break;
|
|
if ( iLoop == LOC_SIZE )
|
|
{
|
|
netgen::mparam.minh = netgen::mparam.maxh;
|
|
netgen::mparam.maxh = 0;
|
|
for ( size_t iW = 0; iW < wires.size(); ++iW )
|
|
{
|
|
StdMeshers_FaceSidePtr wire = wires[ iW ];
|
|
const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct();
|
|
for ( size_t iP = 1; iP < uvPtVec.size(); ++iP )
|
|
{
|
|
SMESH_TNodeXYZ p( uvPtVec[ iP ].node );
|
|
netgen::Point3d np( p.X(),p.Y(),p.Z());
|
|
double segLen = p.Distance( uvPtVec[ iP-1 ].node );
|
|
double size = ngMesh->GetH( np );
|
|
netgen::mparam.minh = Min( netgen::mparam.minh, size );
|
|
netgen::mparam.maxh = Max( netgen::mparam.maxh, segLen );
|
|
}
|
|
}
|
|
//cerr << "min " << netgen::mparam.minh << " max " << netgen::mparam.maxh << endl;
|
|
netgen::mparam.minh *= 0.9;
|
|
netgen::mparam.maxh *= 1.1;
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
faceErr.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED, str ));
|
|
}
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------
|
|
// Fill the SMESHDS with the generated nodes and faces
|
|
// ----------------------------------------------------
|
|
|
|
int nbNodes = ngMesh->GetNP();
|
|
int nbFaces = ngMesh->GetNSE();
|
|
|
|
int nbInputNodes = nodeVec.size()-1;
|
|
nodeVec.resize( nbNodes+1, 0 );
|
|
|
|
// add nodes
|
|
for ( int ngID = nbInputNodes + 1; ngID <= nbNodes; ++ngID )
|
|
{
|
|
const MeshPoint& ngPoint = ngMesh->Point( ngID );
|
|
SMDS_MeshNode * node = meshDS->AddNode(ngPoint(0), ngPoint(1), ngPoint(2));
|
|
nodeVec[ ngID ] = node;
|
|
}
|
|
|
|
// create faces
|
|
int i,j;
|
|
vector<const SMDS_MeshNode*> nodes;
|
|
for ( i = 1; i <= nbFaces ; ++i )
|
|
{
|
|
const Element2d& elem = ngMesh->SurfaceElement(i);
|
|
nodes.resize( elem.GetNP() );
|
|
for (j=1; j <= elem.GetNP(); ++j)
|
|
{
|
|
int pind = elem.PNum(j);
|
|
if ( pind < 1 )
|
|
break;
|
|
nodes[ j-1 ] = nodeVec[ pind ];
|
|
if ( nodes[ j-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_3DSPACE )
|
|
{
|
|
const PointGeomInfo& pgi = elem.GeomInfoPi(j);
|
|
meshDS->SetNodeOnFace( nodes[ j-1 ], faceID, pgi.u, pgi.v);
|
|
}
|
|
}
|
|
if ( j > elem.GetNP() )
|
|
{
|
|
if ( elem.GetType() == TRIG )
|
|
helper.AddFace(nodes[0],nodes[1],nodes[2]);
|
|
else
|
|
helper.AddFace(nodes[0],nodes[1],nodes[2],nodes[3]);
|
|
}
|
|
}
|
|
|
|
break;
|
|
} // two attempts
|
|
} // loop on FACEs
|
|
|
|
return true;
|
|
}
|
|
|
|
void NETGENPlugin_NETGEN_2D_ONLY::CancelCompute()
|
|
{
|
|
SMESH_Algo::CancelCompute();
|
|
netgen::multithread.terminate = 1;
|
|
}
|
|
|
|
//================================================================================
|
|
/*!
|
|
* \brief Return progress of Compute() [0.,1]
|
|
*/
|
|
//================================================================================
|
|
|
|
double NETGENPlugin_NETGEN_2D_ONLY::GetProgress() const
|
|
{
|
|
return -1;
|
|
// const char* task1 = "Surface meshing";
|
|
// //const char* task2 = "Optimizing surface";
|
|
// double& progress = const_cast<NETGENPlugin_NETGEN_2D_ONLY*>( this )->_progress;
|
|
// if ( _progressByTic < 0. &&
|
|
// strncmp( netgen::multithread.task, task1, 3 ) == 0 )
|
|
// {
|
|
// progress = Min( 0.25, SMESH_Algo::GetProgressByTic() ); // [0, 0.25]
|
|
// }
|
|
// else //if ( strncmp( netgen::multithread.task, task2, 3 ) == 0)
|
|
// {
|
|
// if ( _progressByTic < 0 )
|
|
// {
|
|
// NETGENPlugin_NETGEN_2D_ONLY* me = (NETGENPlugin_NETGEN_2D_ONLY*) this;
|
|
// me->_progressByTic = 0.25 / (_progressTic+1);
|
|
// }
|
|
// const_cast<NETGENPlugin_NETGEN_2D_ONLY*>( this )->_progressTic++;
|
|
// progress = Max( progress, _progressByTic * _progressTic );
|
|
// }
|
|
// //cout << netgen::multithread.task << " " << _progressTic << endl;
|
|
// return Min( progress, 0.99 );
|
|
}
|
|
|
|
//=============================================================================
|
|
/*!
|
|
*
|
|
*/
|
|
//=============================================================================
|
|
|
|
bool NETGENPlugin_NETGEN_2D_ONLY::Evaluate(SMESH_Mesh& aMesh,
|
|
const TopoDS_Shape& aShape,
|
|
MapShapeNbElems& aResMap)
|
|
{
|
|
TopoDS_Face F = TopoDS::Face(aShape);
|
|
if(F.IsNull())
|
|
return false;
|
|
|
|
// collect info from edges
|
|
int nb0d = 0, nb1d = 0;
|
|
bool IsQuadratic = false;
|
|
bool IsFirst = true;
|
|
double fullLen = 0.0;
|
|
TopTools_MapOfShape tmpMap;
|
|
for (TopExp_Explorer exp(F, TopAbs_EDGE); exp.More(); exp.Next()) {
|
|
TopoDS_Edge E = TopoDS::Edge(exp.Current());
|
|
if( tmpMap.Contains(E) )
|
|
continue;
|
|
tmpMap.Add(E);
|
|
SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(exp.Current());
|
|
MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
|
|
if( anIt==aResMap.end() ) {
|
|
SMESH_subMesh *sm = aMesh.GetSubMesh(F);
|
|
SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
|
|
smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
|
|
return false;
|
|
}
|
|
std::vector<int> aVec = (*anIt).second;
|
|
nb0d += aVec[SMDSEntity_Node];
|
|
nb1d += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
|
|
double aLen = SMESH_Algo::EdgeLength(E);
|
|
fullLen += aLen;
|
|
if(IsFirst) {
|
|
IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
|
|
IsFirst = false;
|
|
}
|
|
}
|
|
tmpMap.Clear();
|
|
|
|
// compute edge length
|
|
double ELen = 0;
|
|
if (( _hypLengthFromEdges ) || ( !_hypLengthFromEdges && !_hypMaxElementArea )) {
|
|
if ( nb1d > 0 )
|
|
ELen = fullLen / nb1d;
|
|
}
|
|
if ( _hypMaxElementArea ) {
|
|
double maxArea = _hypMaxElementArea->GetMaxArea();
|
|
ELen = sqrt(2. * maxArea/sqrt(3.0));
|
|
}
|
|
GProp_GProps G;
|
|
BRepGProp::SurfaceProperties(F,G);
|
|
double anArea = G.Mass();
|
|
|
|
const int hugeNb = numeric_limits<int>::max()/10;
|
|
if ( anArea / hugeNb > ELen*ELen )
|
|
{
|
|
SMESH_subMesh *sm = aMesh.GetSubMesh(F);
|
|
SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
|
|
smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated.\nToo small element length",this));
|
|
return false;
|
|
}
|
|
int nbFaces = (int) ( anArea / ( ELen*ELen*sqrt(3.) / 4 ) );
|
|
int nbNodes = (int) ( ( nbFaces*3 - (nb1d-1)*2 ) / 6 + 1 );
|
|
std::vector<int> aVec(SMDSEntity_Last);
|
|
for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
|
|
if( IsQuadratic ) {
|
|
aVec[SMDSEntity_Node] = nbNodes;
|
|
aVec[SMDSEntity_Quad_Triangle] = nbFaces;
|
|
}
|
|
else {
|
|
aVec[SMDSEntity_Node] = nbNodes;
|
|
aVec[SMDSEntity_Triangle] = nbFaces;
|
|
}
|
|
SMESH_subMesh *sm = aMesh.GetSubMesh(F);
|
|
aResMap.insert(std::make_pair(sm,aVec));
|
|
|
|
return true;
|
|
}
|