File size: 5,230 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | /***************************************************************************
* Copyright (c) 2013 Jürgen Riegel <FreeCAD@juergen-riegel.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include <SMESH_Version.h>
#include <Python.h>
#include <SMESHDS_Mesh.hxx>
#include <SMESH_Mesh.hxx>
#ifdef FCWithNetgen
# include <NETGENPlugin_Hypothesis.hxx>
# include <NETGENPlugin_Mesher.hxx>
#endif
#include <App/DocumentObjectPy.h>
#include <Base/Console.h>
#include <Mod/Part/App/PartFeature.h>
#include "FemMesh.h"
#include "FemMeshShapeNetgenObject.h"
using namespace Fem;
using namespace App;
PROPERTY_SOURCE(Fem::FemMeshShapeNetgenObject, Fem::FemMeshShapeBaseObject)
const char* FinenessEnums[]
= {"VeryCoarse", "Coarse", "Moderate", "Fine", "VeryFine", "UserDefined", nullptr};
FemMeshShapeNetgenObject::FemMeshShapeNetgenObject()
{
ADD_PROPERTY_TYPE(MaxSize, (1000), "MeshParams", Prop_None, "Maximum element size");
ADD_PROPERTY_TYPE(MinSize, (0), "MeshParams", Prop_None, "Minimum element size");
ADD_PROPERTY_TYPE(SecondOrder, (true), "MeshParams", Prop_None, "Create quadric elements");
ADD_PROPERTY_TYPE(Fineness, (2), "MeshParams", Prop_None, "Fineness level of the mesh");
Fineness.setEnums(FinenessEnums);
ADD_PROPERTY_TYPE(
GrowthRate,
(0.3),
"MeshParams",
Prop_None,
" allows defining how much the linear dimensions of two adjacent cells can differ"
);
ADD_PROPERTY_TYPE(
NbSegsPerEdge,
(1),
"MeshParams",
Prop_None,
"allows defining the minimum number of mesh segments in which edges will be split"
);
ADD_PROPERTY_TYPE(
NbSegsPerRadius,
(2),
"MeshParams",
Prop_None,
"allows defining the minimum number of mesh segments in which radii will be split"
);
ADD_PROPERTY_TYPE(Optimize, (true), "MeshParams", Prop_None, "Optimize the resulting mesh");
}
FemMeshShapeNetgenObject::~FemMeshShapeNetgenObject() = default;
App::DocumentObjectExecReturn* FemMeshShapeNetgenObject::execute()
{
#ifdef FCWithNetgen
Fem::FemMesh newMesh;
const Part::Feature* feat = Shape.getValue<Part::Feature*>();
if (!feat) {
return App::DocumentObject::StdReturn;
}
TopoDS_Shape shape = feat->Shape.getValue();
NETGENPlugin_Mesher myNetGenMesher(newMesh.getSMesh(), shape, true);
# if SMESH_VERSION_MAJOR >= 9
NETGENPlugin_Hypothesis* tet = new NETGENPlugin_Hypothesis(0, newMesh.getGenerator());
# else
NETGENPlugin_Hypothesis* tet = new NETGENPlugin_Hypothesis(0, 0, newMesh.getGenerator());
# endif
tet->SetMaxSize(MaxSize.getValue());
tet->SetMinSize(MinSize.getValue());
tet->SetSecondOrder(SecondOrder.getValue());
tet->SetOptimize(Optimize.getValue());
int iFineness = Fineness.getValue();
tet->SetFineness((NETGENPlugin_Hypothesis::Fineness)iFineness);
if (iFineness == 5) {
tet->SetGrowthRate(GrowthRate.getValue());
tet->SetNbSegPerEdge(NbSegsPerEdge.getValue());
tet->SetNbSegPerRadius(NbSegsPerRadius.getValue());
}
myNetGenMesher.SetParameters(tet);
newMesh.getSMesh()->ShapeToMesh(shape);
myNetGenMesher.Compute();
SMESHDS_Mesh* data = const_cast<SMESH_Mesh*>(newMesh.getSMesh())->GetMeshDS();
const SMDS_MeshInfo& info = data->GetMeshInfo();
int numFaces = data->NbFaces();
int numNode = info.NbNodes();
int numVolu = info.NbVolumes();
Base::Console().log("NetgenMesh: %i Nodes, %i Volumes, %i Faces\n", numNode, numVolu, numFaces);
FemMesh.setValue(newMesh);
return App::DocumentObject::StdReturn;
#else
return new App::DocumentObjectExecReturn(
"The FEM module is built without NETGEN support. Meshing will not work!!!",
this
);
#endif
}
|