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partial work for netgen2d in run_mesher + corrections for netgen3d nodeVec + restoring sequential netgen2D_only

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This commit is contained in:
Yoann Audouin 2022-09-09 09:50:30 +02:00
parent cd7fb05959
commit 9b35f0cc86
10 changed files with 967 additions and 162 deletions
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38
src/NETGENPlugin/NETGENPlugin_Mesher.cxx
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@ -576,8 +576,9 @@ void NETGENPlugin_Mesher::SetSelfPointer( NETGENPlugin_Mesher ** ptr )
*/
//================================================================================
void NETGENPlugin_Mesher::SetDefaultParameters(netgen::MeshingParameters &mparams)
void NETGENPlugin_Mesher::SetDefaultParameters()
{
netgen::MeshingParameters& mparams = netgen::mparam;
mparams = netgen::MeshingParameters();
// maximal mesh edge size
mparams.maxh = 0;//NETGENPlugin_Hypothesis::GetDefaultMaxSize();
@ -618,15 +619,9 @@ void NETGENPlugin_Mesher::SetDefaultParameters(netgen::MeshingParameters &mparam
*/
//================================================================================
void NETGENPlugin_Mesher::SetDefaultParameters()
void NETGENPlugin_Mesher::SetParameters(const NETGENPlugin_Hypothesis* hyp)
{
netgen::MeshingParameters& mparams = netgen::mparam;
SetDefaultParameters(mparams);
}
void NETGENPlugin_Mesher::SetParameters(const NETGENPlugin_Hypothesis* hyp, netgen::MeshingParameters &mparams)
{
// Initialize global NETGEN parameters:
// maximal mesh segment size
mparams.maxh = hyp->GetMaxSize();
@ -691,22 +686,6 @@ void NETGENPlugin_Mesher::SetParameters(const NETGENPlugin_Hypothesis* hyp, netg
#endif
}
//=============================================================================
/*!
* Pass parameters to NETGEN
*/
//=============================================================================
void NETGENPlugin_Mesher::SetParameters(const NETGENPlugin_Hypothesis* hyp)
{
if (hyp)
{
netgen::MeshingParameters& mparams = netgen::mparam;
SetParameters(hyp, mparams);
}
}
//=============================================================================
/*!
* Pass simple parameters to NETGEN
@ -4519,8 +4498,7 @@ void NETGENPlugin_NetgenLibWrapper::setMesh( Ng_Mesh* mesh )
int NETGENPlugin_NetgenLibWrapper::GenerateMesh( netgen::OCCGeometry& occgeo,
int startWith, int endWith,
netgen::Mesh* & ngMesh ,
netgen::MeshingParameters& mparam)
netgen::Mesh* & ngMesh)
{
int err = 0;
if ( !ngMesh )
@ -4530,15 +4508,15 @@ int NETGENPlugin_NetgenLibWrapper::GenerateMesh( netgen::OCCGeometry& occgeo,
ngMesh->SetGeometry( shared_ptr<netgen::NetgenGeometry>( &occgeo, &NOOP_Deleter ));
mparam.perfstepsstart = startWith;
mparam.perfstepsend = endWith;
netgen::mparam.perfstepsstart = startWith;
netgen::mparam.perfstepsend = endWith;
std::shared_ptr<netgen::Mesh> meshPtr( ngMesh, &NOOP_Deleter );
err = occgeo.GenerateMesh( meshPtr, mparam );
err = occgeo.GenerateMesh( meshPtr, netgen::mparam );
#else
#ifdef NETGEN_V5
err = netgen::OCCGenerateMesh(occgeo, ngMesh, mparam, startWith, endWith);
err = netgen::OCCGenerateMesh(occgeo, ngMesh, netgen::mparam, startWith, endWith);
#else

14
src/NETGENPlugin/NETGENPlugin_Mesher.hxx
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@ -58,8 +58,6 @@ class TopoDS_Shape;
namespace netgen {
class OCCGeometry;
class Mesh;
class MeshingParameters;
extern MeshingParameters mparam;
}
//=============================================================================
/*!
@ -97,16 +95,12 @@ struct NETGENPLUGIN_EXPORT NETGENPlugin_NetgenLibWrapper
static int GenerateMesh(netgen::OCCGeometry& occgeo, int startWith, int endWith,
netgen::Mesh* & ngMesh, netgen::MeshingParameters & mparam);
netgen::Mesh* & ngMesh);
int GenerateMesh(netgen::OCCGeometry& occgeo, int startWith, int endWith )
{
return GenerateMesh( occgeo, startWith, endWith, _ngMesh, netgen::mparam );
return GenerateMesh( occgeo, startWith, endWith, _ngMesh );
}
static int GenerateMesh(netgen::OCCGeometry& occgeo, int startWith, int endWith,
netgen::Mesh* & ngMesh){
return GenerateMesh(occgeo, startWith, endWith, ngMesh, netgen::mparam);
};
static void CalcLocalH( netgen::Mesh * ngMesh );
static void RemoveTmpFiles();
@ -139,7 +133,6 @@ class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
void SetSelfPointer( NETGENPlugin_Mesher ** ptr );
void SetParameters(const NETGENPlugin_Hypothesis* hyp);
void SetParameters(const NETGENPlugin_Hypothesis* hyp, netgen::MeshingParameters &mparams);
void SetParameters(const NETGENPlugin_SimpleHypothesis_2D* hyp);
void SetParameters(const StdMeshers_ViscousLayers* hyp );
void SetViscousLayers2DAssigned(bool isAssigned) { _isViscousLayers2D = isAssigned; }
@ -211,7 +204,6 @@ class NETGENPLUGIN_EXPORT NETGENPlugin_Mesher
const bool overrideMinH=true);
void SetDefaultParameters();
void SetDefaultParameters(netgen::MeshingParameters &mparams);
static SMESH_ComputeErrorPtr ReadErrors(const std::vector< const SMDS_MeshNode* >& nodeVec);

357
src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.cxx
View File

@ -26,6 +26,7 @@
#include "NETGENPlugin_Mesher.hxx"
#include "NETGENPlugin_Hypothesis_2D.hxx"
#include "NETGENPlugin_Provider.hxx"
#include "netgen_param.hxx"
#include <SMDS_MeshElement.hxx>
#include <SMDS_MeshNode.hxx>
@ -40,6 +41,9 @@
#include <StdMeshers_MaxElementArea.hxx>
#include <StdMeshers_QuadranglePreference.hxx>
#include <StdMeshers_ViscousLayers2D.hxx>
#include "DriverStep.hxx"
#include "DriverMesh.hxx"
#include <Precision.hxx>
#include <Standard_ErrorHandler.hxx>
@ -51,6 +55,9 @@
#include <vector>
#include <limits>
#include <cstdlib>
#include <boost/filesystem.hpp>
namespace fs = boost::filesystem;
/*
Netgen include files
*/
@ -65,7 +72,7 @@ namespace nglib {
//#include <meshtype.hpp>
namespace netgen {
NETGENPLUGIN_DLL_HEADER
// extern MeshingParameters mparam;
extern MeshingParameters mparam;
#ifdef NETGEN_V5
extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);
#endif
@ -220,6 +227,223 @@ bool NETGENPlugin_NETGEN_2D_ONLY::CheckHypothesis (SMESH_Mesh& aMesh,
// }
// }
// write in a binary file the orientation for each 2D element of the mesh
void NETGENPlugin_NETGEN_2D_ONLY::exportElementOrientation(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape,
netgen_params& aParams,
const std::string output_file)
{
std::map<vtkIdType, bool> elemOrientation;
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
for ( TopExp_Explorer exEd( aShape, TopAbs_EDGE ); exEd.More(); exEd.Next())
{
const TopoDS_Shape& aShapeEdge = exEd.Current();
const SMESHDS_SubMesh * aSubMeshDSEdge = proxyMesh->GetSubMesh( aShapeEdge );
if ( !aSubMeshDSEdge ) continue;
SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSEdge->GetElements();
while ( iteratorElem->more() ) // loop on elements on a geom face
{
const SMDS_MeshElement* elem = iteratorElem->next();
elemOrientation[elem->GetID()] = aShapeEdge.Orientation() == TopAbs_INTERNAL;
}
}
std::ofstream df(output_file, ios::out|ios::binary);
int size=elemOrientation.size();
df.write((char*)&size, sizeof(int));
for(auto const& [id, orient]:elemOrientation){
df.write((char*)&id, sizeof(vtkIdType));
df.write((char*)&orient, sizeof(bool));
}
df.close();
}
void NETGENPlugin_NETGEN_2D_ONLY::FillParameters(const NETGENPlugin_Hypothesis* hyp, netgen_params &aParams)
{
//TODO: factorize code with the one from NETGEN3D
// Move in netgen_param ?
aParams.maxh = hyp->GetMaxSize();
aParams.minh = hyp->GetMinSize();
aParams.segmentsperedge = hyp->GetNbSegPerEdge();
aParams.grading = hyp->GetGrowthRate();
aParams.curvaturesafety = hyp->GetNbSegPerRadius();
aParams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
aParams.quad = hyp->GetQuadAllowed() ? 1 : 0;
aParams.optimize = hyp->GetOptimize();
aParams.fineness = hyp->GetFineness();
aParams.uselocalh = hyp->GetSurfaceCurvature();
aParams.merge_solids = hyp->GetFuseEdges();
aParams.chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
aParams.optsteps2d = aParams.optimize ? hyp->GetNbSurfOptSteps() : 0;
aParams.optsteps3d = aParams.optimize ? hyp->GetNbVolOptSteps() : 0;
aParams.elsizeweight = hyp->GetElemSizeWeight();
aParams.opterrpow = hyp->GetWorstElemMeasure();
aParams.delaunay = hyp->GetUseDelauney();
aParams.checkoverlap = hyp->GetCheckOverlapping();
aParams.checkchartboundary = hyp->GetCheckChartBoundary();
#ifdef NETGEN_V6
// std::string
aParams.meshsizefilename = hyp->GetMeshSizeFile();
#else
// const char*
aParams.meshsizefilename = hyp->GetMeshSizeFile().empty() ? 0 : hyp->GetMeshSizeFile().c_str();
#endif
#ifdef NETGEN_V6
aParams.closeedgefac = 2;
#else
aParams.closeedgefac = 0;
#endif
aParams.has_LengthFromEdges_hyp = _hypLengthFromEdges;
}
//=============================================================================
/*!
*Here we are going to use the NETGEN mesher remotely
*/
//=============================================================================
bool NETGENPlugin_NETGEN_2D_ONLY::RemoteCompute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
aMesh.Lock();
SMESH_Hypothesis::Hypothesis_Status hypStatus;
CheckHypothesis(aMesh, aShape, hypStatus);
// Temporary folder for run
fs::path tmp_folder = aMesh.tmp_folder / fs::unique_path(fs::path("Face-%%%%-%%%%"));
fs::create_directories(tmp_folder);
// Using MESH2D generated after all triangles where created.
fs::path mesh_file=aMesh.tmp_folder / fs::path("Mesh1D.med");
fs::path element_orientation_file=tmp_folder / fs::path("element_orientation.dat");
fs::path new_element_file=tmp_folder / fs::path("new_elements.dat");
fs::path tmp_mesh_file=tmp_folder / fs::path("tmp_mesh.med");
// TODO: Remove that file we do not use it
fs::path output_mesh_file=tmp_folder / fs::path("output_mesh.med");
fs::path shape_file=tmp_folder / fs::path("shape.step");
fs::path param_file=tmp_folder / fs::path("netgen2d_param.txt");
fs::path log_file=tmp_folder / fs::path("run_mesher.log");
//TODO: Handle variable mesh_name
std::string mesh_name = "Maillage_1";
//Writing Shape
export_shape(shape_file.string(), aShape);
//Writing hypo
netgen_params aParams;
FillParameters(_hypParameters, aParams);
export_netgen_params(param_file.string(), aParams);
// Exporting element orientation
exportElementOrientation(aMesh, aShape, aParams, element_orientation_file.string());
aMesh.Unlock();
// Calling run_mesher
// TODO: check if we need to handle the .exe for windows
std::string cmd;
fs::path run_mesher_exe =
fs::path(std::getenv("NETGENPLUGIN_ROOT_DIR"))/
fs::path("bin")/
fs::path("salome")/
fs::path("run_mesher");
cmd = run_mesher_exe.string() +
" NETGEN2D " + mesh_file.string() + " "
+ shape_file.string() + " "
+ param_file.string() + " "
+ element_orientation_file.string() + " "
+ new_element_file.string() + " "
+ std::to_string(0) + " "
+ output_mesh_file.string() +
" >> " + log_file.string();
std::cout << "Running command: " << std::endl;
std::cout << cmd << std::endl;
// Writing command in log
std::ofstream flog(log_file.string());
flog << cmd << endl;
flog.close();
// TODO: Replace system by something else to handle redirection for windows
int ret = system(cmd.c_str());
// TODO: better error handling (display log ?)
if(ret != 0){
// Run crahed
//throw Exception("Meshing failed");
std::cerr << "Issue with command: " << std::endl;
std::cerr << cmd << std::endl;
return false;
}
aMesh.Lock();
std::ifstream df(new_element_file.string(), ios::binary);
int Netgen_NbOfNodes;
int Netgen_NbOfNodesNew;
int Netgen_NbOfTria;
double Netgen_point[3];
int Netgen_triangle[3];
int nodeID;
SMESH_MesherHelper helper(aMesh);
// This function is necessary so that SetElementOnShape works
int _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
helper.SetElementsOnShape( true );
// Number of nodes in intial mesh
df.read((char*) &Netgen_NbOfNodes, sizeof(int));
// Number of nodes added by netgen
df.read((char*) &Netgen_NbOfNodesNew, sizeof(int));
// Filling nodevec (correspondence netgen numbering mesh numbering)
vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
{
//Id of the point
df.read((char*) &nodeID, sizeof(int));
nodeVec.at(nodeIndex) = nullptr;
SMDS_NodeIteratorPtr iteratorNode = aMesh.GetMeshDS()->nodesIterator();
while(iteratorNode->more()){
const SMDS_MeshNode* node = iteratorNode->next();
if(node->GetID() == nodeID){
nodeVec.at(nodeIndex) = node;
break;
}
}
if(nodeVec.at(nodeIndex) == nullptr){
std::cout << "Error could not identify id";
return false;
}
}
// Add new points and update nodeVec
for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
{
df.read((char *) &Netgen_point, sizeof(double)*3);
nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
Netgen_point[1],
Netgen_point[2]);
}
// Add tetrahedrons
df.read((char*) &Netgen_NbOfTria, sizeof(int));
for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTria; ++elemIndex )
{
df.read((char*) &Netgen_triangle, sizeof(int)*3);
helper.AddFace (nodeVec.at( Netgen_triangle[0] ),
nodeVec.at( Netgen_triangle[1] ),
nodeVec.at( Netgen_triangle[2] ));
}
df.close();
aMesh.Unlock();
return true;
}
//=============================================================================
/*!
*Here we are going to use the NETGEN mesher
@ -229,29 +453,23 @@ bool NETGENPlugin_NETGEN_2D_ONLY::CheckHypothesis (SMESH_Mesh& aMesh,
bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
aMesh.Lock();
SMESH_Hypothesis::Hypothesis_Status hypStatus;
this->CheckHypothesis(aMesh, aShape, hypStatus);
aMesh.Unlock();
netgen::MeshingParameters mparam;
int id_mparam = mparam_provider.take(mparam);
if(aMesh.IsParallel())
return RemoteCompute(aMesh, aShape);
netgen::multithread.terminate = 0;
//netgen::multithread.task = "Surface meshing";
netgen::multithread.task = "Surface meshing";
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
SMESH_MesherHelper helper(aMesh);
helper.SetElementsOnShape( true );
NETGENPlugin_NetgenLibWrapper *ngLib;
int id_ngLib = nglib_provider.take(&ngLib);
ngLib->_isComputeOk = false;
NETGENPlugin_NetgenLibWrapper ngLib;
ngLib._isComputeOk = false;
netgen::Mesh ngMeshNoLocSize;
netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib->_ngMesh, & ngMeshNoLocSize };
netgen::OCCGeometry *occgeoComm;
int id_occgeoComm = occgeom_provider.take(&occgeoComm);
netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh, & ngMeshNoLocSize };
netgen::OCCGeometry occgeoComm;
// min / max sizes are set as follows:
// if ( _hypParameters )
@ -265,21 +483,18 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
// else
// min = aMesher.GetDefaultMinSize()
// max = max segment len of a FACE
aMesh.Lock();
NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
// TODO: Only valid for NETGEN2D_Only
aMesher.SetDefaultParameters(mparam);
aMesher.SetParameters( _hypParameters, mparam ); // _hypParameters -> mparam
aMesher.SetParameters( _hypParameters ); // _hypParameters -> netgen::mparam
const bool toOptimize = _hypParameters ? _hypParameters->GetOptimize() : true;
if ( _hypMaxElementArea )
{
mparam.maxh = sqrt( 2. * _hypMaxElementArea->GetMaxArea() / sqrt(3.0) );
netgen::mparam.maxh = sqrt( 2. * _hypMaxElementArea->GetMaxArea() / sqrt(3.0) );
}
if ( _hypQuadranglePreference )
mparam.quad = true;
netgen::mparam.quad = true;
// local size is common for all FACEs in aShape?
const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && mparam.uselocalh );
const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && netgen::mparam.uselocalh );
const bool isDefaultHyp = ( !_hypLengthFromEdges && !_hypMaxElementArea && !_hypParameters );
aMesh.Unlock();
@ -287,15 +502,15 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
{
//list< SMESH_subMesh* > meshedSM[4]; --> all sub-shapes are added to occgeoComm
aMesher.PrepareOCCgeometry( *occgeoComm, aShape, aMesh );//, meshedSM );
aMesher.PrepareOCCgeometry( occgeoComm, aShape, aMesh );//, meshedSM );
// local size set at MESHCONST_ANALYSE step depends on
// minh, face_maxh, grading and curvaturesafety; find minh if not set by the user
if ( !_hypParameters || mparam.minh < DBL_MIN )
if ( !_hypParameters || netgen::mparam.minh < DBL_MIN )
{
if ( !_hypParameters )
mparam.maxh = occgeoComm->GetBoundingBox().Diam() / 3.;
mparam.minh = aMesher.GetDefaultMinSize( aShape, mparam.maxh );
netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam() / 3.;
netgen::mparam.minh = aMesher.GetDefaultMinSize( aShape, netgen::mparam.maxh );
}
// set local size depending on curvature and NOT closeness of EDGEs
#ifdef NETGEN_V6
@ -303,19 +518,19 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
#else
const double factor = netgen::occparam.resthcloseedgefac;
netgen::occparam.resthcloseedgeenable = false;
netgen::occparam.resthcloseedgefac = 1.0 + mparam.grading;
netgen::occparam.resthcloseedgefac = 1.0 + netgen::mparam.grading;
#endif
occgeoComm->face_maxh = mparam.maxh;
occgeoComm.face_maxh = netgen::mparam.maxh;
#ifdef NETGEN_V6
netgen::OCCParameters occparam;
netgen::OCCSetLocalMeshSize( *occgeoComm, *ngMeshes[0], mparam, occparam );
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0], netgen::mparam, occparam );
#else
aMesh.Lock();
netgen::OCCSetLocalMeshSize( *occgeoComm, *ngMeshes[0] );
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
aMesh.Unlock();
#endif
occgeoComm->emap.Clear();
occgeoComm->vmap.Clear();
occgeoComm.emap.Clear();
occgeoComm.vmap.Clear();
// set local size according to size of existing segments
TopTools_IndexedMapOfShape edgeMap;
@ -340,15 +555,15 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
}
// set local size defined on shapes
aMesher.SetLocalSize( *occgeoComm, *ngMeshes[0] );
aMesher.SetLocalSizeForChordalError( *occgeoComm, *ngMeshes[0] );
aMesher.SetLocalSize( occgeoComm, *ngMeshes[0] );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMeshes[0] );
try {
ngMeshes[0]->LoadLocalMeshSize( mparam.meshsizefilename );
ngMeshes[0]->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
} catch (NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
}
mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
// ==================
// Loop on all FACEs
// ==================
@ -414,7 +629,7 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
}
if ( nbSegments )
edgeLength /= double( nbSegments );
mparam.maxh = edgeLength;
netgen::mparam.maxh = edgeLength;
}
else if ( isDefaultHyp )
{
@ -434,29 +649,28 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
}
}
edgeLength = sqrt( maxSeg2 ) * 1.05;
mparam.maxh = edgeLength;
netgen::mparam.maxh = edgeLength;
}
if ( mparam.maxh < DBL_MIN )
mparam.maxh = occgeoComm->GetBoundingBox().Diam();
if ( netgen::mparam.maxh < DBL_MIN )
netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam();
if ( !isCommonLocalSize )
{
mparam.minh = aMesher.GetDefaultMinSize( F, mparam.maxh );
netgen::mparam.minh = aMesher.GetDefaultMinSize( F, netgen::mparam.maxh );
}
}
// prepare occgeom
netgen::OCCGeometry *occgeom;
int id_occgeom = occgeom_provider.take(&occgeom);
occgeom->shape = F;
occgeom->fmap.Add( F );
occgeom->CalcBoundingBox();
occgeom->facemeshstatus.SetSize(1);
occgeom->facemeshstatus = 0;
occgeom->face_maxh_modified.SetSize(1);
occgeom->face_maxh_modified = 0;
occgeom->face_maxh.SetSize(1);
occgeom->face_maxh = mparam.maxh;
netgen::OCCGeometry occgeom;
occgeom.shape = F;
occgeom.fmap.Add( F );
occgeom.CalcBoundingBox();
occgeom.facemeshstatus.SetSize(1);
occgeom.facemeshstatus = 0;
occgeom.face_maxh_modified.SetSize(1);
occgeom.face_maxh_modified = 0;
occgeom.face_maxh.SetSize(1);
occgeom.face_maxh = netgen::mparam.maxh;
// -------------------------
// Fill netgen mesh
@ -477,28 +691,28 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
if ( iLoop == NO_LOC_SIZE )
{
ngMesh->SetGlobalH ( mparam.maxh );
ngMesh->SetMinimalH( mparam.minh );
Box<3> bb = occgeom->GetBoundingBox();
ngMesh->SetGlobalH ( netgen::mparam.maxh );
ngMesh->SetMinimalH( netgen::mparam.minh );
Box<3> bb = occgeom.GetBoundingBox();
bb.Increase (bb.Diam()/10);
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparam.grading);
aMesher.SetLocalSize( *occgeom, *ngMesh );
aMesher.SetLocalSizeForChordalError( *occgeoComm, *ngMesh );
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), netgen::mparam.grading);
aMesher.SetLocalSize( occgeom, *ngMesh );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMesh );
try {
ngMesh->LoadLocalMeshSize( mparam.meshsizefilename );
ngMesh->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
} catch (NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
}
nodeVec.clear();
faceErr = aMesher.AddSegmentsToMesh( *ngMesh, *occgeom, wires, helper, nodeVec,
faceErr = aMesher.AddSegmentsToMesh( *ngMesh, occgeom, wires, helper, nodeVec,
/*overrideMinH=*/!_hypParameters);
if ( faceErr && !faceErr->IsOK() )
break;
//if ( !isCommonLocalSize )
//limitSize( ngMesh, mparam.maxh * 0.8);
//limitSize( ngMesh, netgen::mparam.maxh * 0.8);
// -------------------------
// Generate surface mesh
@ -510,7 +724,7 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
SMESH_Comment str;
try {
OCC_CATCH_SIGNALS;
err = ngLib->GenerateMesh(*occgeom, startWith, endWith, ngMesh, mparam);
err = ngLib.GenerateMesh(occgeom, startWith, endWith, ngMesh);
if ( netgen::multithread.terminate )
return false;
if ( err )
@ -532,12 +746,12 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
}
if ( err )
{
if ( aMesher.FixFaceMesh( *occgeom, *ngMesh, 1 ))
if ( aMesher.FixFaceMesh( occgeom, *ngMesh, 1 ))
break;
if ( iLoop == LOC_SIZE )
{
mparam.minh = mparam.maxh;
mparam.maxh = 0;
netgen::mparam.minh = netgen::mparam.maxh;
netgen::mparam.maxh = 0;
for ( size_t iW = 0; iW < wires.size(); ++iW )
{
StdMeshers_FaceSidePtr wire = wires[ iW ];
@ -548,13 +762,13 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
netgen::Point3d np( p.X(),p.Y(),p.Z());
double segLen = p.Distance( uvPtVec[ iP-1 ].node );
double size = ngMesh->GetH( np );
mparam.minh = Min( mparam.minh, size );
mparam.maxh = Max( mparam.maxh, segLen );
netgen::mparam.minh = Min( netgen::mparam.minh, size );
netgen:: mparam.maxh = Max( netgen::mparam.maxh, segLen );
}
}
//cerr << "min " << mparam.minh << " max " << mparam.maxh << endl;
mparam.minh *= 0.9;
mparam.maxh *= 1.1;
netgen::mparam.minh *= 0.9;
netgen::mparam.maxh *= 1.1;
continue;
}
else
@ -563,10 +777,6 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
}
}
occgeom_provider.release(id_occgeoComm, true);
occgeom_provider.release(id_occgeom, true);
mparam_provider.release(id_mparam);
aMesh.Lock();
// ----------------------------------------------------
// Fill the SMESHDS with the generated nodes and faces
// ----------------------------------------------------
@ -616,9 +826,6 @@ bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
break;
} // two attempts
} // loop on FACEs
aMesh.Unlock();
nglib_provider.release(id_ngLib, true);
return true;
}

19
src/NETGENPlugin/NETGENPlugin_NETGEN_2D_ONLY.hxx
View File

@ -24,15 +24,14 @@
#ifndef _NETGENPlugin_NETGEN_2D_ONLY_HXX_
#define _NETGENPlugin_NETGEN_2D_ONLY_HXX_
#include "NETGENPlugin_Provider.hxx"
#include <SMESH_Algo.hxx>
#include <SMESH_Mesh.hxx>
class StdMeshers_MaxElementArea;
class StdMeshers_LengthFromEdges;
class NETGENPlugin_Hypothesis_2D;
class NETGENPlugin_NetgenLibWrapper;
class NETGENPlugin_Hypothesis;
class netgen_params;
/*!
* \brief Mesher generating 2D elements on a geometrical face taking
@ -52,6 +51,16 @@ public:
const TopoDS_Shape& aShape,
Hypothesis_Status& aStatus);
void exportElementOrientation(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape,
netgen_params& aParams,
const std::string output_file);
void FillParameters(const NETGENPlugin_Hypothesis* hyp,
netgen_params &aParams);
virtual bool RemoteCompute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape);
virtual bool Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape);
@ -69,10 +78,6 @@ protected:
const NETGENPlugin_Hypothesis_2D* _hypParameters;
double _progressByTic;
Provider<netgen::MeshingParameters, 4> mparam_provider;
ProviderPtr<netgen::OCCGeometry, 8> occgeom_provider;
ProviderPtr<NETGENPlugin_NetgenLibWrapper, 4> nglib_provider;
};
#endif

75
src/NETGENPlugin/NETGENPlugin_NETGEN_3D.cxx
View File

@ -231,7 +231,7 @@ void NETGENPlugin_NETGEN_3D::FillParameters(const NETGENPlugin_Hypothesis* hyp,
#endif
}
// wirte in a binary file the orientation for each 2D element of the mesh
// write in a binary file the orientation for each 2D element of the mesh
void NETGENPlugin_NETGEN_3D::exportElementOrientation(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape,
netgen_params& aParams,
@ -294,8 +294,13 @@ int NETGENPlugin_NETGEN_3D::RemoteCompute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
aMesh.Lock();
auto time0 = std::chrono::high_resolution_clock::now();
SMESH_Hypothesis::Hypothesis_Status hypStatus;
CheckHypothesis(aMesh, aShape, hypStatus);
auto time1 = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
std::cout << "Time for check_hypo: " << elapsed.count() * 1e-9 << std::endl;
// Temporary folder for run
fs::path tmp_folder = aMesh.tmp_folder / fs::unique_path(fs::path("Volume-%%%%-%%%%"));
@ -315,14 +320,24 @@ int NETGENPlugin_NETGEN_3D::RemoteCompute(SMESH_Mesh& aMesh,
//Writing Shape
export_shape(shape_file.string(), aShape);
auto time2 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
std::cout << "Time for export_shape: " << elapsed.count() * 1e-9 << std::endl;
//Writing hypo
netgen_params aParams;
FillParameters(_hypParameters, aParams);
export_netgen_params(param_file.string(), aParams);
auto time3 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time3-time2);
std::cout << "Time for fill+export param: " << elapsed.count() * 1e-9 << std::endl;
// Exporting element orientation
exportElementOrientation(aMesh, aShape, aParams, element_orientation_file.string());
auto time4 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time4-time3);
std::cout << "Time for exportElemnOrient: " << elapsed.count() * 1e-9 << std::endl;
aMesh.Unlock();
// Calling run_mesher
@ -353,17 +368,18 @@ int NETGENPlugin_NETGEN_3D::RemoteCompute(SMESH_Mesh& aMesh,
// TODO: Replace system by something else to handle redirection for windows
int ret = system(cmd.c_str());
auto time5 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time5-time4);
std::cout << "Time for exec of run_mesher: " << elapsed.count() * 1e-9 << std::endl;
// TODO: better error handling (display log ?)
if(ret != 0){
// Run crahed
//throw Exception("Meshing failed");
std::cerr << "Issue with command: " << std::endl;
std::cerr << cmd << std::endl;
return false;
}
aMesh.Lock();
std::ifstream df(new_element_file.string(), ios::binary);
@ -386,47 +402,48 @@ int NETGENPlugin_NETGEN_3D::RemoteCompute(SMESH_Mesh& aMesh,
// Filling nodevec (correspondence netgen numbering mesh numbering)
vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
//vector<int> nodeTmpVec ( Netgen_NbOfNodesNew + 1 );
SMESHDS_Mesh * meshDS = helper.GetMeshDS();
for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
{
//Id of the point
df.read((char*) &nodeID, sizeof(int));
nodeVec.at(nodeIndex) = nullptr;
SMDS_NodeIteratorPtr iteratorNode = aMesh.GetMeshDS()->nodesIterator();
while(iteratorNode->more()){
const SMDS_MeshNode* node = iteratorNode->next();
if(node->GetID() == nodeID){
nodeVec.at(nodeIndex) = node;
break;
}
}
if(nodeVec.at(nodeIndex) == nullptr){
std::cout << "Error could not identify id";
return false;
}
nodeVec.at(nodeIndex) = meshDS->FindNode(nodeID);
}
auto time6 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time6-time5);
std::cout << "Time for exec of nodeVec: " << elapsed.count() * 1e-9 << std::endl;
// Add new points and update nodeVec
for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
{
df.read((char *) &Netgen_point, sizeof(double)*3);
nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
Netgen_point[1],
Netgen_point[2]);
Netgen_point[1],
Netgen_point[2]);
}
// Add tetrahedrons
df.read((char*) &Netgen_NbOfTetra, sizeof(int));
for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
{
df.read((char*) &Netgen_tetrahedron, sizeof(int)*4);
helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
nodeVec.at( Netgen_tetrahedron[1] ),
nodeVec.at( Netgen_tetrahedron[2] ),
nodeVec.at( Netgen_tetrahedron[3] ));
helper.AddVolume(
nodeVec.at( Netgen_tetrahedron[0] ),
nodeVec.at( Netgen_tetrahedron[1] ),
nodeVec.at( Netgen_tetrahedron[2] ),
nodeVec.at( Netgen_tetrahedron[3] ));
}
df.close();
auto time7 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time7-time6);
std::cout << "Time for exec of add_in_mesh: " << elapsed.count() * 1e-9 << std::endl;
fs::remove_all(tmp_folder);
aMesh.Unlock();
return true;
@ -443,6 +460,7 @@ bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
{
if(aMesh.IsParallel())
return RemoteCompute(aMesh, aShape);
auto time0 = std::chrono::high_resolution_clock::now();
netgen::multithread.terminate = 0;
netgen::multithread.task = "Volume meshing";
@ -597,6 +615,9 @@ bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
// -------------------------
// Generate the volume mesh
// -------------------------
auto time1 = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
std::cout << "Time for seq:fill_in_ngmesh: " << elapsed.count() * 1e-9 << std::endl;
return (ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
}
@ -684,6 +705,8 @@ bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
vector< const SMDS_MeshNode* >& nodeVec,
NETGENPlugin_NetgenLibWrapper& ngLib)
{
auto time0 = std::chrono::high_resolution_clock::now();
netgen::multithread.terminate = 0;
netgen::Mesh* ngMesh = ngLib._ngMesh;
@ -746,6 +769,7 @@ bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
try
{
OCC_CATCH_SIGNALS;
auto time0 = std::chrono::high_resolution_clock::now();
ngLib.CalcLocalH(ngMesh);
err = ngLib.GenerateMesh(occgeo, startWith, endWith);
@ -779,6 +803,9 @@ bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
str << " at " << netgen::multithread.task;
error(str);
}
auto time1 = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
std::cout << "Time for seq:compute: " << elapsed.count() * 1e-9 << std::endl;
int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
@ -825,6 +852,10 @@ bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
}
}
}
auto time2 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
std::cout << "Time for seq:compute: " << elapsed.count() * 1e-9 << std::endl;
return !err;
}

581
src/NETGENPlugin/netgen_mesher.cxx
View File

@ -35,9 +35,11 @@
#include <vector>
#include <filesystem>
namespace fs = std::filesystem;
#include <chrono>
// SMESH include
#include <SMESH_Mesh.hxx>
#include <SMESH_subMesh.hxx>
#include <SMESH_Gen.hxx>
#include <SMESH_Algo.hxx>
#include <SMESHDS_Mesh.hxx>
@ -48,6 +50,8 @@ namespace fs = std::filesystem;
#include <StdMeshers_MaxElementVolume.hxx>
#include <StdMeshers_QuadToTriaAdaptor.hxx>
#include <StdMeshers_ViscousLayers.hxx>
#include <StdMeshers_ViscousLayers2D.hxx>
// NETGENPlugin
// #include <NETGENPlugin_Mesher.hxx>
@ -72,6 +76,7 @@ namespace fs = std::filesystem;
#define OCCGEOMETRY
#endif
#include <occgeom.hpp>
#include <meshing.hpp>
#ifdef NETGEN_V5
#include <ngexception.hpp>
@ -86,21 +91,28 @@ namespace nglib {
namespace netgen {
NETGENPLUGIN_DLL_HEADER
extern MeshingParameters mparam;
NETGENPLUGIN_DLL_HEADER
extern volatile multithreadt multithread;
NETGENPLUGIN_DLL_HEADER
extern bool merge_solids;
#ifdef NETGEN_V5
extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh);
#endif
}
using namespace nglib;
int error(int error_type, std::string msg){
int error(int error_type, std::string msg)
{
std::cerr << msg << std::endl;
return error_type;
};
int error(const SMESH_Comment& comment){
int error(const SMESH_Comment& comment)
{
return error(1, "SMESH_Comment error: "+comment);
};
@ -110,12 +122,16 @@ int error(const SMESH_Comment& comment){
* @param aParams Internal structure of parameters
* @param mparams Netgen strcuture of parameters
*/
void set_netgen_parameters(netgen_params& aParams){
void set_netgen_parameters(netgen_params& aParams)
{
// Default parameters
#ifdef NETGEN_V6
netgen::mparam.nthreads = std::thread::hardware_concurrency();
//netgen::mparam.nthreads = std::thread::hardware_concurrency();
netgen::mparam.nthreads = 2;
//netgen::mparam.parallel_meshing = false;
if ( getenv( "SALOME_NETGEN_DISABLE_MULTITHREADING" ))
{
@ -154,7 +170,7 @@ void set_netgen_parameters(netgen_params& aParams){
}
/**
* @brief compute mesh with netgen
* @brief compute mesh with netgen3d
*
* @param input_mesh_file Input Mesh file
* @param shape_file Shape file
@ -171,8 +187,9 @@ int netgen3d(const std::string input_mesh_file,
const std::string element_orientation_file,
const std::string new_element_file,
bool output_mesh,
const std::string output_mesh_file){
const std::string output_mesh_file)
{
auto time0 = std::chrono::high_resolution_clock::now();
// Importing mesh
SMESH_Gen gen;
@ -181,35 +198,49 @@ int netgen3d(const std::string input_mesh_file,
std::string mesh_name = "Maillage_1";
import_mesh(input_mesh_file, *myMesh, mesh_name);
auto time1 = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
std::cout << "Time for import_mesh: " << elapsed.count() * 1e-9 << std::endl;
// Importing shape
TopoDS_Shape myShape;
import_shape(shape_file, myShape);
auto time2 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
std::cout << "Time for import_shape: " << elapsed.count() * 1e-9 << std::endl;
// Importing hypothesis
//TODO: make it
netgen_params myParams;
import_netgen_params(hypo_file, myParams);
auto time3 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time3-time2);
std::cout << "Time for import_netgen_param: " << elapsed.count() * 1e-9 << std::endl;
std::cout << "Meshing with netgen3d" << std::endl;
int ret = netgen3d(myShape, *myMesh, myParams,
new_element_file, element_orientation_file,
output_mesh);
if(!ret){
std::cout << "Meshing failed" << std::endl;
return ret;
}
if(output_mesh)
if(output_mesh){
auto time4 = std::chrono::high_resolution_clock::now();
export_mesh(output_mesh_file, *myMesh, mesh_name);
auto time5 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time5-time4);
std::cout << "Time for export_mesh: " << elapsed.count() * 1e-9 << std::endl;
}
return ret;
}
/**
* @brief Compute aShape within aMesh using netgen
* @brief Compute aShape within aMesh using netgen3d
*
* @param aShape the shape
* @param aMesh the mesh
@ -220,7 +251,10 @@ int netgen3d(const std::string input_mesh_file,
*/
int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
std::string new_element_file, std::string element_orientation_file,
bool output_mesh){
bool output_mesh)
{
auto time0 = std::chrono::high_resolution_clock::now();
netgen::multithread.terminate = 0;
netgen::multithread.task = "Volume meshing";
@ -298,8 +332,6 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
// Adding elements from Mesh
SMDS_ElemIteratorPtr iteratorElem = meshDS->elementsIterator(SMDSAbs_Face);
int nbedge = meshDS->NbEdges();
int nbface = meshDS->NbFaces();
bool isRev;
bool isInternalFace = false;
@ -309,7 +341,6 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
{
// check mesh face
const SMDS_MeshElement* elem = iteratorElem->next();
int tmp = elem->GetShapeID();
if ( !elem )
return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
if ( elem->NbCornerNodes() != 3 )
@ -387,6 +418,9 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
// internals);
//}
}
auto time1 = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
std::cout << "Time for fill_in_ngmesh: " << elapsed.count() * 1e-9 << std::endl;
// -------------------------
// Generate the volume mesh
@ -454,7 +488,7 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
OCC_CATCH_SIGNALS;
ngLib.CalcLocalH(ngMesh);
err = ngLib.GenerateMesh(occgeo, startWith, endWith, ngMesh, netgen::mparam);
err = ngLib.GenerateMesh(occgeo, startWith, endWith, ngMesh);
if(netgen::multithread.terminate)
return false;
@ -499,6 +533,9 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
if ( ce && ce->HasBadElems() )
return error( ce );
}
auto time2 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
std::cout << "Time for netgen_compute: " << elapsed.count() * 1e-9 << std::endl;
bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
if ( isOK )
@ -536,6 +573,10 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
}
df.close();
}
auto time3 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time3-time2);
std::cout << "Time for write_new_elem: " << elapsed.count() * 1e-9 << std::endl;
// Adding new files in aMesh as well
if ( output_mesh )
@ -569,7 +610,517 @@ int netgen3d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
{
}
}
auto time4 = std::chrono::high_resolution_clock::now();
elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time4-time3);
std::cout << "Time for add_element_to_smesh: " << elapsed.count() * 1e-9 << std::endl;
}
return !err;
}
/**
* @brief compute mesh with netgen2d
*
* @param input_mesh_file Input Mesh file
* @param shape_file Shape file
* @param hypo_file Parameter file
* @param new_element_file Binary file containing new nodes and new element info
* @param output_mesh If true will export mesh into output_mesh_file
* @param output_mesh_file Output Mesh file
*
* @return error code
*/
int netgen2d(const std::string input_mesh_file,
const std::string shape_file,
const std::string hypo_file,
const std::string element_orientation_file,
const std::string new_element_file,
bool output_mesh,
const std::string output_mesh_file)
{
// Importing mesh
SMESH_Gen gen;
SMESH_Mesh *myMesh = gen.CreateMesh(false);
//TODO: To define
std::string mesh_name = "Maillage_1";
import_mesh(input_mesh_file, *myMesh, mesh_name);
// Importing shape
TopoDS_Shape myShape;
import_shape(shape_file, myShape);
// Importing hypothesis
netgen_params myParams;
import_netgen_params(hypo_file, myParams);
std::cout << "Meshing with netgen3d" << std::endl;
int ret = netgen2d(myShape, *myMesh, myParams,
new_element_file, element_orientation_file,
output_mesh);
if(!ret){
std::cout << "Meshing failed" << std::endl;
return ret;
}
if(output_mesh)
export_mesh(output_mesh_file, *myMesh, mesh_name);
return ret;
}
/**
* @brief Compute aShape within aMesh using netgen2d
*
* @param aShape the shape
* @param aMesh the mesh
* @param aParams the netgen parameters
* @param new_element_file file containing data on the new point/tetra added by netgen
*
* @return error code
*/
int netgen2d(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
std::string new_element_file, std::string element_orientation_file,
bool output_mesh)
{
netgen::multithread.terminate = 0;
netgen::multithread.task = "Surface meshing";
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
SMESH_MesherHelper helper(aMesh);
helper.SetElementsOnShape( true );
NETGENPlugin_NetgenLibWrapper ngLib;
ngLib._isComputeOk = false;
netgen::Mesh ngMeshNoLocSize;
netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh, & ngMeshNoLocSize };
netgen::OCCGeometry occgeoComm;
std::map<vtkIdType, bool> elemOrientation;
typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
typedef TNodeToIDMap::value_type TN2ID;
const int invalid_ID = -1;
int Netgen_NbOfNodes=0;
double Netgen_point[3];
int Netgen_segment[2];
int Netgen_triangle[3];
// min / max sizes are set as follows:
// if ( _hypParameters )
// min and max are defined by the user
// else if ( aParams.has_LengthFromEdges_hyp )
// min = aMesher.GetDefaultMinSize()
// max = average segment len of a FACE
// else if ( _hypMaxElementArea )
// min = aMesher.GetDefaultMinSize()
// max = f( _hypMaxElementArea )
// else
// min = aMesher.GetDefaultMinSize()
// max = max segment len of a FACE
NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
set_netgen_parameters( aParams );
const bool toOptimize = aParams.optimize;
if ( aParams.has_maxelementvolume_hyp )
{
netgen::mparam.maxh = sqrt( 2. * aParams.maxElementVolume / sqrt(3.0) );
}
netgen::mparam.quad = aParams.quad;
// local size is common for all FACEs in aShape?
const bool isCommonLocalSize = ( !aParams.has_LengthFromEdges_hyp && !aParams.has_maxelementvolume_hyp && netgen::mparam.uselocalh );
const bool isDefaultHyp = ( !aParams.has_LengthFromEdges_hyp && !aParams.has_maxelementvolume_hyp && !aParams.has_netgen_param );
if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
{
//list< SMESH_subMesh* > meshedSM[4]; --> all sub-shapes are added to occgeoComm
aMesher.PrepareOCCgeometry( occgeoComm, aShape, aMesh );//, meshedSM );
// local size set at MESHCONST_ANALYSE step depends on
// minh, face_maxh, grading and curvaturesafety; find minh if not set by the user
if ( !aParams.has_netgen_param || netgen::mparam.minh < DBL_MIN )
{
if ( !aParams.has_netgen_param )
netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam() / 3.;
netgen::mparam.minh = aMesher.GetDefaultMinSize( aShape, netgen::mparam.maxh );
}
// set local size depending on curvature and NOT closeness of EDGEs
#ifdef NETGEN_V6
const double factor = 2; //netgen::occparam.resthcloseedgefac;
#else
const double factor = netgen::occparam.resthcloseedgefac;
netgen::occparam.resthcloseedgeenable = false;
netgen::occparam.resthcloseedgefac = 1.0 + netgen::mparam.grading;
#endif
occgeoComm.face_maxh = netgen::mparam.maxh;
#ifdef NETGEN_V6
netgen::OCCParameters occparam;
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0], netgen::mparam, occparam );
#else
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
#endif
occgeoComm.emap.Clear();
occgeoComm.vmap.Clear();
// Reading list of element to integrate into netgen mesh
std::ifstream df(element_orientation_file, ios::in|ios::binary);
int nbElement;
vtkIdType id;
bool orient;
df.read((char*)&nbElement, sizeof(int));
for(int ielem=0;ielem<nbElement;++ielem){
df.read((char*) &id, sizeof(vtkIdType));
df.read((char*) &orient, sizeof(bool));
elemOrientation[id] = orient;
}
df.close();
bool isIn;
// set local size according to size of existing segments
SMDS_ElemIteratorPtr iteratorElem = meshDS->elementsIterator(SMDSAbs_Edge);
while ( iteratorElem->more() ) // loop on elements on a geom face
{
const SMDS_MeshElement* seg = iteratorElem->next();
// Keeping only element that are in the element orientation file
isIn = elemOrientation.count(seg->GetID())==1;
if(!isIn)
continue;
SMESH_TNodeXYZ n1 = seg->GetNode(0);
SMESH_TNodeXYZ n2 = seg->GetNode(1);
gp_XYZ p = 0.5 * ( n1 + n2 );
netgen::Point3d pi(p.X(), p.Y(), p.Z());
ngMeshes[0]->RestrictLocalH( pi, factor * ( n1 - n2 ).Modulus() );
}
// set local size defined on shapes
aMesher.SetLocalSize( occgeoComm, *ngMeshes[0] );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMeshes[0] );
try {
ngMeshes[0]->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
} catch (netgen::NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
}
netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
// ==================
// Loop on all FACEs
// ==================
vector< const SMDS_MeshNode* > nodeVec;
// TopExp_Explorer fExp( aShape, TopAbs_FACE );
// for ( int iF = 0; fExp.More(); fExp.Next(), ++iF )
// {
// TopoDS_Face F = TopoDS::Face( fExp.Current() /*.Oriented( TopAbs_FORWARD )*/);
// int faceID = meshDS->ShapeToIndex( F );
// SMESH_ComputeErrorPtr& faceErr = aMesh.GetSubMesh( F )->GetComputeError();
// aParams._quadraticMesh = helper.IsQuadraticSubMesh( F );
// const bool ignoreMediumNodes = aParams._quadraticMesh;
// // build viscous layers if required
// if ( F.Orientation() != TopAbs_FORWARD &&
// F.Orientation() != TopAbs_REVERSED )
// F.Orientation( TopAbs_FORWARD ); // avoid pb with TopAbs_INTERNAL
// SMESH_ProxyMesh::Ptr proxyMesh = StdMeshers_ViscousLayers2D::Compute( aMesh, F );
// if ( !proxyMesh )
// continue;
// // ------------------------
// // get all EDGEs of a FACE
// // ------------------------
// TSideVector wires =
// StdMeshers_FaceSide::GetFaceWires( F, aMesh, ignoreMediumNodes, faceErr, &helper, proxyMesh );
// if ( faceErr && !faceErr->IsOK() )
// continue;
// size_t nbWires = wires.size();
// if ( nbWires == 0 )
// {
// faceErr.reset
// ( new SMESH_ComputeError
// ( COMPERR_ALGO_FAILED, "Problem in StdMeshers_FaceSide::GetFaceWires()" ));
// continue;
// }
// if ( wires[0]->NbSegments() < 3 ) // ex: a circle with 2 segments
// {
// faceErr.reset
// ( new SMESH_ComputeError
// ( COMPERR_BAD_INPUT_MESH, SMESH_Comment("Too few segments: ")<<wires[0]->NbSegments()) );
// continue;
// }
// // ----------------------
// // compute maxh of a FACE
// // ----------------------
// if ( !aParams.has_netgen_param )
// {
// double edgeLength = 0;
// if (aParams.has_LengthFromEdges_hyp )
// {
// // compute edgeLength as an average segment length
// smIdType nbSegments = 0;
// for ( size_t iW = 0; iW < nbWires; ++iW )
// {
// edgeLength += wires[ iW ]->Length();
// nbSegments += wires[ iW ]->NbSegments();
// }
// if ( nbSegments )
// edgeLength /= double( nbSegments );
// netgen::mparam.maxh = edgeLength;
// }
// else if ( isDefaultHyp )
// {
// // set edgeLength by a longest segment
// double maxSeg2 = 0;
// for ( size_t iW = 0; iW < nbWires; ++iW )
// {
// const UVPtStructVec& points = wires[ iW ]->GetUVPtStruct();
// if ( points.empty() )
// return error( COMPERR_BAD_INPUT_MESH );
// gp_Pnt pPrev = SMESH_TNodeXYZ( points[0].node );
// for ( size_t i = 1; i < points.size(); ++i )
// {
// gp_Pnt p = SMESH_TNodeXYZ( points[i].node );
// maxSeg2 = Max( maxSeg2, p.SquareDistance( pPrev ));
// pPrev = p;
// }
// }
// edgeLength = sqrt( maxSeg2 ) * 1.05;
// netgen::mparam.maxh = edgeLength;
// }
// if ( netgen::mparam.maxh < DBL_MIN )
// netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam();
// if ( !isCommonLocalSize )
// {
// netgen::mparam.minh = aMesher.GetDefaultMinSize( F, netgen::mparam.maxh );
// }
// }
// prepare occgeom
netgen::OCCGeometry occgeom;
occgeom.shape = aShape;
occgeom.fmap.Add( aShape );
occgeom.CalcBoundingBox();
occgeom.facemeshstatus.SetSize(1);
occgeom.facemeshstatus = 0;
occgeom.face_maxh_modified.SetSize(1);
occgeom.face_maxh_modified = 0;
occgeom.face_maxh.SetSize(1);
occgeom.face_maxh = netgen::mparam.maxh;
// -------------------------
// Fill netgen mesh
// -------------------------
// maps nodes to ng ID
// MESHCONST_ANALYSE step may lead to a failure, so we make an attempt
// w/o MESHCONST_ANALYSE at the second loop
int err = 0;
enum { LOC_SIZE, NO_LOC_SIZE };
int iLoop = isCommonLocalSize ? 0 : 1;
int faceID = occgeom.fmap.FindIndex(aShape);
int solidID = 0;
for ( ; iLoop < 2; iLoop++ )
{
//bool isMESHCONST_ANALYSE = false;
//TODO: check how to replace that
//InitComputeError();
netgen::Mesh * ngMesh = ngMeshes[ iLoop ];
ngMesh->DeleteMesh();
if ( iLoop == NO_LOC_SIZE )
{
ngMesh->SetGlobalH ( netgen::mparam.maxh );
ngMesh->SetMinimalH( netgen::mparam.minh );
netgen::Box<3> bb = occgeom.GetBoundingBox();
bb.Increase (bb.Diam()/10);
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), netgen::mparam.grading);
aMesher.SetLocalSize( occgeom, *ngMesh );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMesh );
try {
ngMesh->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
} catch (netgen::NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
}
TNodeToIDMap nodeToNetgenID;
nodeVec.clear();
ngMesh->AddFaceDescriptor( netgen::FaceDescriptor( faceID, solidID, solidID, 0 ));
// set local size according to size of existing segments
SMDS_ElemIteratorPtr iteratorElem = meshDS->elementsIterator(SMDSAbs_Edge);
while ( iteratorElem->more() ) // loop on elements on a geom face
{
const SMDS_MeshElement* elem = iteratorElem->next();
// Keeping only element that are in the element orientation file
bool isIn = elemOrientation.count(elem->GetID())==1;
if(!isIn)
continue;
bool isRev = elemOrientation[elem->GetID()];
std::cerr << isRev;
for ( int iN = 0; iN < 2; ++iN )
{
const SMDS_MeshNode* node = elem->GetNode( iN );
const int shapeID = node->getshapeId();
int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
if ( ngID == invalid_ID )
{
ngID = ++Netgen_NbOfNodes;
Netgen_point [ 0 ] = node->X();
Netgen_point [ 1 ] = node->Y();
Netgen_point [ 2 ] = node->Z();
netgen::MeshPoint mp( netgen::Point<3> (node->X(), node->Y(), node->Z()) );
ngMesh->AddPoint ( mp, 1, netgen::EDGEPOINT );
}
Netgen_segment[ isRev ? 1-iN : iN ] = ngID;
}
// add segment
netgen::Segment seg;
seg[0] = Netgen_segment[0];
seg[1] = Netgen_segment[1];
seg.edgenr = ngMesh->GetNSeg() +1;
seg.si = faceID;
ngMesh->AddSegment(seg);
}
int nbNodes2 = ngMesh->GetNP();
int nseg = ngMesh->GetNSeg();
// insert old nodes into nodeVec
nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
for ( ; n_id != nodeToNetgenID.end(); ++n_id )
nodeVec[ n_id->second ] = n_id->first;
nodeToNetgenID.clear();
//if ( !isCommonLocalSize )
//limitSize( ngMesh, mparam.maxh * 0.8);
// -------------------------
// Generate surface mesh
// -------------------------
const int startWith = netgen::MESHCONST_MESHSURFACE;
const int endWith = toOptimize ? netgen::MESHCONST_OPTSURFACE : netgen::MESHCONST_MESHSURFACE;
SMESH_Comment str;
try {
OCC_CATCH_SIGNALS;
err = ngLib.GenerateMesh(occgeom, startWith, endWith, ngMesh);
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 ( iLoop == LOC_SIZE )
{
std::cout << "Need second run" << std::endl;
/*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 " << mparam.minh << " max " << 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
// ----------------------------------------------------
if(output_mesh)
{
int nbNodes = ngMesh->GetNP();
int nbFaces = ngMesh->GetNSE();
std::cout << nbFaces << " " << nbNodes << std::endl;
int nbInputNodes = (int) nodeVec.size()-1;
nodeVec.resize( nbNodes+1, 0 );
// add nodes
for ( int ngID = nbInputNodes + 1; ngID <= nbNodes; ++ngID )
{
const netgen::MeshPoint& ngPoint = ngMesh->Point( ngID );
SMDS_MeshNode * node = meshDS->AddNode(ngPoint(0), ngPoint(1), ngPoint(2));
nodeVec[ ngID ] = node;
}
// create faces
int i,j;
for ( i = 1; i <= nbFaces ; ++i )
{
Ng_GetVolumeElement(ngLib.ngMesh(), i, Netgen_triangle);
helper.AddFace (nodeVec.at( Netgen_triangle[0] ),
nodeVec.at( Netgen_triangle[1] ),
nodeVec.at( Netgen_triangle[2] ));
}
} // output_mesh
break;
} // two attempts
//} // loop on FACEs
return true;
}

14
src/NETGENPlugin/netgen_mesher.hxx
View File

@ -36,6 +36,20 @@ class SMESH_Mesh;
class SMESH_Comment;
class netgen_params;
int netgen2d(TopoDS_Shape &aShape,
SMESH_Mesh& aMesh,
netgen_params& aParams,
std::string new_element_file,
std::string element_orientation_file,
bool output_mesh);
int netgen2d(const std::string input_mesh_file,
const std::string shape_file,
const std::string hypo_file,
const std::string element_orienation_file,
const std::string new_element_file,
bool output_mesh,
const std::string output_mesh_file);
int netgen3d(TopoDS_Shape &aShape,
SMESH_Mesh& aMesh,
netgen_params& aParams,

12
src/NETGENPlugin/netgen_param.cxx
View File

@ -31,12 +31,17 @@
#include <string>
#include <cassert>
// TODO: Error handling of read/write
/**
* @brief Print content of a netgen_params
*
* @param aParams The object to display
*/
void print_netgen_params(netgen_params& aParams){
// TODO: prettier print
// TODO: Add call to print in log
std::cout << "has_netgen_param: " << aParams.has_netgen_param << std::endl;
std::cout << "maxh: " << aParams.maxh << std::endl;
std::cout << "minh: " << aParams.minh << std::endl;
@ -57,11 +62,12 @@ void print_netgen_params(netgen_params& aParams){
std::cout << "delaunay: " << aParams.delaunay << std::endl;
std::cout << "checkoverlap: " << aParams.checkoverlap << std::endl;
std::cout << "checkchartboundary: " << aParams.checkchartboundary << std::endl;
std::cout << "closeedgefac: " << aParams.closeedgefac << std::endl;
std::cout << "has_local_size: " << aParams.has_local_size << std::endl;
std::cout << "meshsizefilename: " << aParams.meshsizefilename << std::endl;
std::cout << "has_maxelementvolume_hyp: " << aParams.has_maxelementvolume_hyp << std::endl;
std::cout << "maxElementVolume: " << aParams.maxElementVolume << std::endl;
std::cout << "closeedgefac: " << aParams.closeedgefac << std::endl;
std::cout << "has_LengthFromEdges_hyp: " << aParams.has_LengthFromEdges_hyp << std::endl;
}
/**
@ -124,6 +130,8 @@ void import_netgen_params(const std::string param_file, netgen_params& aParams){
aParams.has_maxelementvolume_hyp = std::stoi(line);
std::getline(myfile, line);
aParams.maxElementVolume = std::stod(line);
std::getline(myfile, line);
aParams.maxElementVolume = std::stoi(line);
myfile.close();
};
@ -161,6 +169,7 @@ void export_netgen_params(const std::string param_file, netgen_params& aParams){
myfile << aParams.meshsizefilename << std::endl;
myfile << aParams.has_maxelementvolume_hyp << std::endl;
myfile << aParams.maxElementVolume << std::endl;
myfile << aParams.has_LengthFromEdges_hyp << std::endl;
myfile.close();
};
@ -199,6 +208,7 @@ bool diff_netgen_params(netgen_params params1, netgen_params params2){
ret &= params1.meshsizefilename == params2.meshsizefilename;
ret &= params1.has_maxelementvolume_hyp == params2.has_maxelementvolume_hyp;
ret &= params1.maxElementVolume == params2.maxElementVolume;
ret &= params1.has_LengthFromEdges_hyp == params2.has_LengthFromEdges_hyp;
return ret;
}

3
src/NETGENPlugin/netgen_param.hxx
View File

@ -78,6 +78,9 @@ struct netgen_params{
StdMeshers_ViscousLayers* _viscousLayersHyp=nullptr;
//double _progressByTic;
bool _quadraticMesh=false;
// Params from NETGEN2D
bool has_LengthFromEdges_hyp=false;
};
void print_netgen_params(netgen_params& aParams);

16
src/NETGENPlugin/run_mesher.cxx
View File

@ -36,6 +36,8 @@
#include <TopoDS_Shape.hxx>
#include <iostream>
#include <chrono>
/**
* @brief Test of shape Import/Export
*
@ -183,7 +185,7 @@ int main(int argc, char *argv[]){
std::cout << " ELEM_ORIENT_FILE NEW_ELEMENT_FILE OUTPUT_MESH_FILE" << std::endl;
std::cout << std::endl;
std::cout << "Args:" << std::endl;
std::cout << " MESHER: mesher to use from (NETGEN3D)" << std::endl;
std::cout << " MESHER: mesher to use from (NETGEN3D, NETGEN2D)" << std::endl;
std::cout << " INPUT_MESH_FILE: MED File containing lower-dimension-elements already meshed" << std::endl;
std::cout << " SHAPE_FILE: STEP file containing the shape to mesh" << std::endl;
std::cout << " HYPO_FILE: Ascii file containint the list of parameters" << std::endl;
@ -209,6 +211,7 @@ int main(int argc, char *argv[]){
test_netgen_params();
test_netgen3d();
} else if (mesher=="NETGEN3D"){
auto begin = std::chrono::high_resolution_clock::now();
netgen3d(input_mesh_file,
shape_file,
hypo_file,
@ -216,6 +219,17 @@ int main(int argc, char *argv[]){
new_element_file,
output_mesh,
output_mesh_file);
auto end = std::chrono::high_resolution_clock::now();
auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
std::cout << "Time elapsed: " << elapsed.count()*1e-9 << std::endl;
} else if (mesher=="NETGEN2D"){
netgen2d(input_mesh_file,
shape_file,
hypo_file,
element_orientation_file,
new_element_file,
output_mesh,
output_mesh_file);
} else {
std::cerr << "Unknown mesher:" << mesher << std::endl;
}