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meshing from python in 2d

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This commit is contained in:
Joachim Schoeberl 2015-08-08 12:58:41 +02:00
parent 4e258c7b2e
commit 714385724c
7 changed files with 62 additions and 23 deletions
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3
libsrc/csg/python_csg.cpp
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@ -356,9 +356,6 @@ DLL_HEADER void ExportCSG()
{
// testout = new ofstream ("test.out");
shared_ptr<Mesh> dummy;
cout << "Genrate Mesh" << endl;
// cout << "Genrate Mesh, params = " << param << endl;
// cout << "geom, bbox = " << geo.BoundingBox() << endl;
geo.FindIdenticSurfaces(1e-8 * geo.MaxSize());
geo.GenerateMesh (dummy, param, 0, 6);
ng_geometry.reset (&geo, NOOP_Deleter);

26
libsrc/geom2d/python_geom2d.cpp
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@ -9,12 +9,29 @@
using namespace netgen;
namespace bp = boost::python;
namespace netgen
{
extern std::shared_ptr<NetgenGeometry> ng_geometry;
}
DLL_HEADER void ExportGeom2d()
{
ModuleScope module("geom2d");
bp::class_<SplineGeometry2d, boost::noncopyable>("SplineGeometry")
bp::class_<SplineGeometry2d, shared_ptr<SplineGeometry2d>, boost::noncopyable>("SplineGeometry")
.def("__init__", bp::make_constructor
(FunctionPointer
([](const string & filename)
{
cout << "load geometry";
ifstream ist(filename);
auto geom = make_shared<SplineGeometry2d>();
geom->Load (filename.c_str());
ng_geometry = geom;
return geom;
})))
.def("Load",&SplineGeometry2d::Load)
.def("AppendPoint", FunctionPointer([](SplineGeometry2d &self, double px, double py)
{
@ -201,10 +218,11 @@ DLL_HEADER void ExportGeom2d()
//cout << i << " : " << self.splines[i]->GetPoint(0.1) << " , " << self.splines[i]->GetPoint(0.5) << endl;
}
}))
.def("GenerateMesh", FunctionPointer([](SplineGeometry2d &self, MeshingParameters & mparam)
.def("GenerateMesh", FunctionPointer([](shared_ptr<SplineGeometry2d> self, MeshingParameters & mparam)
{
shared_ptr<Mesh> mesh;
self.GenerateMesh(mesh, mparam, 0, 0);
shared_ptr<Mesh> mesh = make_shared<Mesh> ();
ng_geometry = self;
self->GenerateMesh(mesh, mparam, 0, 0);
return mesh;
}))

3
libsrc/meshing/msghandler.cpp
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@ -15,7 +15,8 @@ extern void Ng_PrintDest(const char * s);
//the dots for progression of program
void PrintDot(char ch)
{
if (printdots)
// if (printdots)
if (printmessage_importance >= 4)
{
char st[2];
st[0] = ch;

2
python/CMakeLists.txt
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@ -1,4 +1,4 @@
install(FILES __init__.py meshing.py csg.py
install(FILES __init__.py meshing.py csg.py geom2d.py
DESTINATION ${PYTHON_PACKAGES_INSTALL_DIR}/netgen
COMPONENT netgen
)

3
python/Makefile.am
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@ -1,3 +1,4 @@
python_PYTHON = __init__.py meshing.py csg.py
python_PYTHON = __init__.py meshing.py csg.py geom2d.py

4
python/csg.py
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@ -21,8 +21,8 @@ def VS (obj):
def csg_meshing_func (geom, maxh):
return GenerateMesh (geom, MeshingParameters (maxh=maxh))
def csg_meshing_func (geom, **args):
return GenerateMesh (geom, MeshingParameters (**args))
CSGeometry.GenerateMesh = csg_meshing_func

34
python/geom2d.py
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@ -1,11 +1,33 @@
from nglib.meshing import *
from netgen import __platform
if __platform.startswith('linux') or __platform.startswith('darwin'):
# Linux or Mac OS X
from libgeom2d.geom2d import *
# import libcsgvis.csgvis as csgvis
# from libcsgvis.csgvis import MouseMove
from libmesh.meshing import *
if __platform.startswith('win'):
# Windows
from nglib.geom2d import *
# import nglib.csgvis as csgvis
# from nglib.csgvis import MouseMove
from nglib.meshing import *
unit_square = SplineGeometry()
pi1 = unit_square.AppendPoint(0,0)
pi2 = unit_square.AppendPoint(1,0)
pi3 = unit_square.AppendPoint(1,1)
pi4 = unit_square.AppendPoint(0,1)
unit_square.Append(["line",pi1,pi2], bc=1)
unit_square.Append(["line",pi2,pi3], bc=2)
unit_square.Append(["line",pi3,pi4], bc=3)
unit_square.Append(["line",pi4,pi1], bc=4)
all = ['SplineGeometry', 'unit_square']
geom = SplineGeometry()
geom.Load("square.in2d")
param = MeshingParameters()
param.maxh = 0.05
m1 = geom.GenerateMesh (param)