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occ parameters from python, gui and meshsize parameters now the same

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This commit is contained in:
Christopher Lackner 2019-08-27 10:10:17 +02:00
parent 7f442d14f2
commit 9d96c0e432
9 changed files with 127 additions and 94 deletions
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7
libsrc/occ/occgenmesh.cpp
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@ -989,7 +989,7 @@ namespace netgen
void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh,
const MeshingParameters & mparam)
const MeshingParameters & mparam, const OCCParameters& occparam)
{
mesh.SetGlobalH (mparam.maxh);
mesh.SetMinimalH (mparam.minh);
@ -1273,7 +1273,8 @@ namespace netgen
int OCCGenerateMesh (OCCGeometry & geom, shared_ptr<Mesh> & mesh, MeshingParameters & mparam)
int OCCGenerateMesh (OCCGeometry & geom, shared_ptr<Mesh> & mesh, MeshingParameters & mparam,
const OCCParameters& occparam)
{
multithread.percent = 0;
@ -1283,7 +1284,7 @@ namespace netgen
mesh = make_shared<Mesh>();
mesh->geomtype = Mesh::GEOM_OCC;
OCCSetLocalMeshSize(geom,*mesh, mparam);
OCCSetLocalMeshSize(geom,*mesh, mparam, occparam);
}
if (multithread.terminate || mparam.perfstepsend <= MESHCONST_ANALYSE)

30
libsrc/occ/occgeom.cpp
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@ -1684,12 +1684,6 @@ void STEP_GetEntityName(const TopoDS_Shape & theShape, STEPCAFControl_Reader * a
int OCCGeometry :: GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam)
{
return OCCGenerateMesh (*this, mesh, mparam);
}
const Refinement & OCCGeometry :: GetRefinement () const
@ -1697,20 +1691,6 @@ void STEP_GetEntityName(const TopoDS_Shape & theShape, STEPCAFControl_Reader * a
return * new OCCRefinementSurfaces (*this);
}
OCCParameters :: OCCParameters()
{
resthcloseedgefac = 1;
resthcloseedgeenable = 1;
resthminedgelen = 0.001;
resthminedgelenenable = 1;
}
void OCCParameters :: Print(ostream & ost) const
{
ost << "OCC Parameters:" << endl
@ -1720,11 +1700,13 @@ void STEP_GetEntityName(const TopoDS_Shape & theShape, STEPCAFControl_Reader * a
<< ", min len = " << resthminedgelen << endl;
}
DLL_HEADER extern OCCParameters occparam;
OCCParameters occparam;
OCCParameters occparam;
int OCCGeometry :: GenerateMesh (shared_ptr<Mesh> & mesh, MeshingParameters & mparam)
{
return OCCGenerateMesh (*this, mesh, mparam, occparam);
}
}

23
libsrc/occ/occgeom.hpp
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@ -404,26 +404,19 @@ namespace netgen
public:
/// Factor for meshing close edges
double resthcloseedgefac;
double resthcloseedgefac = 2.;
/// Enable / Disable detection of close edges
int resthcloseedgeenable;
int resthcloseedgeenable = true;
/// Minimum edge length to be used for dividing edges to mesh points
double resthminedgelen;
double resthminedgelen = 0.001;
/// Enable / Disable use of the minimum edge length (by default use 1e-4)
int resthminedgelenenable;
/*!
Default Constructor for the OpenCascade
Mesh generation parameter set
*/
OCCParameters();
int resthminedgelenenable = true;
/*!
Dump all the OpenCascade specific meshing parameters
@ -439,16 +432,14 @@ namespace netgen
DLL_HEADER OCCGeometry * LoadOCC_STEP (const char * filename);
DLL_HEADER OCCGeometry * LoadOCC_BREP (const char * filename);
DLL_HEADER extern OCCParameters occparam;
// Philippose - 31.09.2009
// External access to the mesh generation functions within the OCC
// subsystem (Not sure if this is the best way to implement this....!!)
DLL_HEADER extern int OCCGenerateMesh (OCCGeometry & occgeometry, shared_ptr<Mesh> & mesh,
MeshingParameters & mparam);
MeshingParameters & mparam, const OCCParameters& occparam);
DLL_HEADER extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh, const MeshingParameters & mparam);
DLL_HEADER extern void OCCSetLocalMeshSize(OCCGeometry & geom, Mesh & mesh, const MeshingParameters & mparam,
const OCCParameters& occparam);
DLL_HEADER extern void OCCMeshSurface (OCCGeometry & geom, Mesh & mesh, int perfstepsend, MeshingParameters & mparam);

1
libsrc/occ/occpkg.cpp
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@ -28,6 +28,7 @@ namespace netgen
extern DLL_HEADER shared_ptr<NetgenGeometry> ng_geometry;
extern DLL_HEADER shared_ptr<Mesh> mesh;
extern DLL_HEADER MeshingParameters mparam;
extern DLL_HEADER OCCParameters occparam;
char * err_needsoccgeometry = (char*) "This operation needs an OCC geometry";
extern char * err_needsmesh;

52
libsrc/occ/python_occ.cpp
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@ -15,6 +15,45 @@ namespace netgen
extern std::shared_ptr<NetgenGeometry> ng_geometry;
}
static string occparameter_description = R"delimiter(
OCC Specific Meshing Parameters
-------------------------------
closeedgefac: Optional[float] = 1.
Factor for meshing close edges, if None it is disabled.
minedgelen: Optional[float] = 0.001
Minimum edge length to be used for dividing edges to mesh points. If
None this is disabled.
)delimiter";
void CreateOCCParametersFromKwargs(OCCParameters& occparam, py::dict kwargs)
{
if(kwargs.contains("closeedgefac"))
{
auto val = kwargs.attr("pop")("closeedgefac");
if(val.is_none())
occparam.resthcloseedgeenable = false;
else
{
occparam.resthcloseedgefac = py::cast<double>(val);
occparam.resthcloseedgeenable = true;
}
}
if(kwargs.contains("minedgelen"))
{
auto val = kwargs.attr("pop")("minedgelen");
if(val.is_none())
occparam.resthminedgelenenable = false;
else
{
occparam.resthminedgelen = py::cast<double>(val);
occparam.resthminedgelenenable = true;
}
}
}
DLL_HEADER void ExportNgOCC(py::module &m)
{
@ -132,20 +171,27 @@ DLL_HEADER void ExportNgOCC(py::module &m)
MeshingParameters* pars, py::kwargs kwargs)
{
MeshingParameters mp;
if(pars) mp = *pars;
OCCParameters occparam;
{
py::gil_scoped_acquire aq;
if(pars)
{
auto mp_kwargs = CreateDictFromFlags(pars->geometrySpecificParameters);
CreateOCCParametersFromKwargs(occparam, mp_kwargs);
mp = *pars;
}
CreateOCCParametersFromKwargs(occparam, kwargs);
CreateMPfromKwargs(mp, kwargs);
}
auto mesh = make_shared<Mesh>();
SetGlobalMesh(mesh);
mesh->SetGeometry(geo);
ng_geometry = geo;
geo->GenerateMesh(mesh,mp);
OCCGenerateMesh(*geo, mesh, mp, occparam);
return mesh;
}, py::arg("mp") = nullptr,
py::call_guard<py::gil_scoped_release>(),
meshingparameter_description.c_str())
(meshingparameter_description + occparameter_description).c_str())
;
m.def("LoadOCCGeometry",[] (const string & filename)

12
libsrc/stlgeom/python_stl.cpp
View File

@ -21,15 +21,21 @@ static string stlparameter_description = R"delimiter(
STL Specific Meshing Parameters
-------------------------------
yangle: float =
yangle: float = 30.
Angle for edge detection
contyangle: float =
contyangle: float = 20.
Edges continue if angle > contyangle
edgecornerangle: float =
edgecornerangle: float = 60.
Angle of geometry edge at which the mesher should set a point.
closeedgefac: Optional[float] = 1.
Factor for meshing close edges, if None it is disabled.
minedgelen: Optional[float] = 0.001
Minimum edge length to be used for dividing edges to mesh points. If
None this is disabled.
)delimiter";
void CreateSTLParametersFromKwargs(STLParameters& stlparam, py::dict kwargs)

18
libsrc/stlgeom/stltool.hpp
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@ -235,7 +235,7 @@ class DLL_HEADER STLParameters
public:
/// angle for edge detection
double yangle = 30.;
double contyangle; //edges continued with contyangle
double contyangle = 20.; //edges continued with contyangle
/// angle of geometry edge at which the mesher should set a point
double edgecornerangle = 60.;
/// angle inside on chart
@ -243,25 +243,25 @@ public:
/// angle for overlapping parts of char
double outerchartangle = 70.;
/// 0 .. no, 1 .. local, (2 .. global)
int usesearchtree;
int usesearchtree = 0;
///
double resthatlasfac;
bool resthatlasenable;
double atlasminh;
double resthatlasfac = 2.;
bool resthatlasenable = true;
double atlasminh = 0.1;
double resthsurfcurvfac = 1.;
double resthsurfcurvfac = 2.;
bool resthsurfcurvenable = false;
double resthchartdistfac = 1.5;
double resthchartdistfac = 1.2;
bool resthchartdistenable = true;
double resthcloseedgefac = 2.;
double resthcloseedgefac = 1.;
bool resthcloseedgeenable = true;
double resthedgeanglefac = 1.;
bool resthedgeangleenable = false;
double resthsurfmeshcurvfac = 2.;
double resthsurfmeshcurvfac = 1.;
bool resthsurfmeshcurvenable = false;
double resthlinelengthfac = 0.5;

3
nglib/nglib.cpp
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@ -32,6 +32,7 @@ namespace netgen {
MeshingParameters & mp);
extern MeshingParameters mparam;
DLL_HEADER extern STLParameters stlparam;
DLL_HEADER extern OCCParameters occparam;
}
@ -859,7 +860,7 @@ namespace nglib
// slate
me->DeleteMesh();
OCCSetLocalMeshSize(*occgeom, *me, mparam);
OCCSetLocalMeshSize(*occgeom, *me, mparam, occparam);
return(NG_OK);
}

75
python/meshing.py
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@ -6,61 +6,66 @@ class _MeshsizeObject:
return MeshingParameters(curvaturesafety=1,
segmentsperedge=0.3,
grading=0.7,
resthsurfcurvfac=0.25,
resthchartdistfac=0.8,
resthlinelengthfac=0.2,
resthcloseedgefac=0.5,
resthminedgelen=0.002,
resthedgeanglefac=0.25,
resthsurfmeshcurvfac=1.)
surfcurvfac=0.25,
chartdistfac=0.8,
linelengthfac=0.2,
closeedgefac=0.5,
minedgelen=0.002,
edgeanglefac=0.25,
surfmeshcurvfac=1.,
optsteps3d=5)
@property
def coarse(self):
return MeshingParameters(curvaturesafety=1.5,
segmentsperedge=0.5,
grading=0.5,
resthsurfcurvfac=0.5,
resthchartdistfac=1,
resthlinelengthfac=0.35,
resthcloseedgefac=1,
resthminedgelen=0.02,
resthedgeanglefac=0.5,
resthsurfmeshcurvfac=1.5)
surfcurvfac=0.5,
chartdistfac=1,
linelengthfac=0.35,
closeedgefac=1,
minedgelen=0.02,
edgeanglefac=0.5,
surfmeshcurvfac=1.5,
optsteps3d=5)
@property
def moderate(self):
return MeshingParameters(curvaturesafety=2,
segmentsperedge=1,
grading=0.3,
resthsurfcurvfac=1.,
resthchartdistfac=1.5,
resthlinelengthfac=0.5,
resthcloseedgefac=2,
resthminedgelen=0.2,
resthedgeanglefac=1,
resthsurfmeshcurvfac=2.)
surfcurvfac=1.,
chartdistfac=1.5,
linelengthfac=0.5,
closeedgefac=2,
minedgelen=0.2,
edgeanglefac=1,
surfmeshcurvfac=2.,
optsteps3d=5)
@property
def fine(self):
return MeshingParameters(curvaturesafety=3,
segmentsperedge=2,
grading=0.2,
resthsurfcurvfac=1.5,
resthchartdistfac=2,
resthlinelengthfac=1.5,
resthcloseedgefac=3.5,
resthminedgelen=1.,
resthedgeanglefac=1.5,
resthsurfmeshcurvfac=3.)
surfcurvfac=1.5,
chartdistfac=2,
linelengthfac=1.5,
closeedgefac=3.5,
minedgelen=1.,
edgeanglefac=1.5,
surfmeshcurvfac=3.,
optsteps3d=5)
@property
def very_fine(self):
return MeshingParameters(curvaturesafety=5,
segmentsperedge=3,
grading=0.1,
resthsurfcurvfac=3,
resthchartdistfac=5,
resthlinelengthfac=3,
resthcloseedgefac=5,
resthminedgelen=2.,
resthedgeanglefac=3.,
resthsurfmeshcurvfac=5.)
surfcurvfac=3,
chartdistfac=5,
linelengthfac=3,
closeedgefac=5,
minedgelen=2.,
edgeanglefac=3.,
surfmeshcurvfac=5.,
optsteps3d=5)
meshsize = _MeshsizeObject()