mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-24 21:10:33 +05:00
Python interface for SplineGeometry2d
This commit is contained in:
Christoph Wintersteiger
parent
affe34d80f
commit
55e3841eea
194
libsrc/geom2d/python_geom2d.cpp
Normal file
194
libsrc/geom2d/python_geom2d.cpp
Normal file
@ -0,0 +1,194 @@
|
|||||||
|
#ifdef NG_PYTHON
|
||||||
|
|
||||||
|
#include <boost/python.hpp>
|
||||||
|
#include <meshing.hpp>
|
||||||
|
#include <geometry2d.hpp>
|
||||||
|
|
||||||
|
using namespace netgen;
|
||||||
|
namespace bp = boost::python;
|
||||||
|
|
||||||
|
|
||||||
|
//////////////////////////////////////////////////////////////////////
|
||||||
|
// Lambda to function pointer conversion
|
||||||
|
template <typename Function>
|
||||||
|
struct function_traits
|
||||||
|
: public function_traits<decltype(&Function::operator())> {};
|
||||||
|
|
||||||
|
template <typename ClassType, typename ReturnType, typename... Args>
|
||||||
|
struct function_traits<ReturnType(ClassType::*)(Args...) const> {
|
||||||
|
typedef ReturnType (*pointer)(Args...);
|
||||||
|
typedef ReturnType return_type;
|
||||||
|
};
|
||||||
|
|
||||||
|
template <typename Function>
|
||||||
|
typename function_traits<Function>::pointer
|
||||||
|
FunctionPointer (const Function& lambda) {
|
||||||
|
return static_cast<typename function_traits<Function>::pointer>(lambda);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
template <class T>
|
||||||
|
inline string ToString (const T& t)
|
||||||
|
{
|
||||||
|
stringstream ss;
|
||||||
|
ss << t;
|
||||||
|
return ss.str();
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
void ExportGeom2d()
|
||||||
|
{
|
||||||
|
|
||||||
|
std::string nested_name = "geom2d";
|
||||||
|
if( bp::scope() )
|
||||||
|
nested_name = bp::extract<std::string>(bp::scope().attr("__name__") + ".geom2d");
|
||||||
|
|
||||||
|
bp::object module(bp::handle<>(bp::borrowed(PyImport_AddModule(nested_name.c_str()))));
|
||||||
|
|
||||||
|
cout << "exporting geom2d " << nested_name << endl;
|
||||||
|
bp::object parent = bp::scope() ? bp::scope() : bp::import("__main__");
|
||||||
|
parent.attr("geom2d") = module ;
|
||||||
|
|
||||||
|
bp::scope local_scope(module);
|
||||||
|
|
||||||
|
bp::class_<SplineGeometry2d, boost::noncopyable>("SplineGeometry")
|
||||||
|
.def("Load",&SplineGeometry2d::Load)
|
||||||
|
.def("AppendPoint", FunctionPointer([](SplineGeometry2d &self, double px, double py)
|
||||||
|
{
|
||||||
|
Point<2> p;
|
||||||
|
p(0) = px;
|
||||||
|
p(1) = py;
|
||||||
|
self.geompoints.Append(GeomPoint<2>(p,1));
|
||||||
|
return self.geompoints.Size()-1;
|
||||||
|
}))
|
||||||
|
.def("AppendSegment", FunctionPointer([](SplineGeometry2d &self, int point_index1, int point_index2)//, int leftdomain, int rightdomain)
|
||||||
|
{
|
||||||
|
LineSeg<2> * l = new LineSeg<2>(self.GetPoint(point_index1), self.GetPoint(point_index2));
|
||||||
|
SplineSegExt * seg = new SplineSegExt(*l);
|
||||||
|
seg->leftdom = 1;// leftdomain;
|
||||||
|
seg->rightdom = 0;// rightdomain;
|
||||||
|
seg->hmax = 1e99;
|
||||||
|
seg->reffak = 1;
|
||||||
|
seg->copyfrom = -1;
|
||||||
|
|
||||||
|
self.AppendSegment(seg);
|
||||||
|
}))//, (bp::arg("self"), bp::arg("point_index1"), bp::arg("point_index2"), bp::arg("leftdomain") = 1, bp::arg("rightdomain") = 0) )
|
||||||
|
.def("AppendSegment", FunctionPointer([](SplineGeometry2d &self, int point_index1, int point_index2, int point_index3)//, int leftdomain, int rightdomain)
|
||||||
|
{
|
||||||
|
SplineSeg3<2> * seg3 = new SplineSeg3<2>(self.GetPoint(point_index1), self.GetPoint(point_index2), self.GetPoint(point_index3));
|
||||||
|
SplineSegExt * seg = new SplineSegExt(*seg3);
|
||||||
|
seg->leftdom = 1;// leftdomain;
|
||||||
|
seg->rightdom = 0;// rightdomain;
|
||||||
|
seg->hmax = 1e99;
|
||||||
|
seg->reffak = 1;
|
||||||
|
seg->copyfrom = -1;
|
||||||
|
|
||||||
|
self.AppendSegment(seg);
|
||||||
|
}))//, (bp::arg("self"), bp::arg("point_index1"), bp::arg("point_index2"), bp::arg("point_index3"), bp::arg("leftdomain") = 1, bp::arg("rightdomain") = 0 ) )
|
||||||
|
.def("PlotData", FunctionPointer([](SplineGeometry2d &self)
|
||||||
|
{
|
||||||
|
Box<2> box(self.GetBoundingBox());
|
||||||
|
double xdist = box.PMax()(0) - box.PMin()(0);
|
||||||
|
double ydist = box.PMax()(1) - box.PMin()(1);
|
||||||
|
bp::tuple xlim = bp::make_tuple(box.PMin()(0) - 0.1*xdist, box.PMax()(0) + 0.1*xdist);
|
||||||
|
bp::tuple ylim = bp::make_tuple(box.PMin()(1) - 0.1*ydist, box.PMax()(1) + 0.1*ydist);
|
||||||
|
|
||||||
|
bp::list xpoints, ypoints;
|
||||||
|
GeomPoint<2> point = self.splines[0]->StartPI();
|
||||||
|
xpoints.append(point(0));
|
||||||
|
ypoints.append(point(1));
|
||||||
|
|
||||||
|
for (int i = 0; i < self.splines.Size(); i++)
|
||||||
|
{
|
||||||
|
if (self.splines[i]->GetType().compare("line")==0)
|
||||||
|
{
|
||||||
|
GeomPoint<2> point = self.splines[i]->EndPI();
|
||||||
|
xpoints.append(point(0));
|
||||||
|
ypoints.append(point(1));
|
||||||
|
}
|
||||||
|
else if (self.splines[i]->GetType().compare("spline3")==0)
|
||||||
|
{
|
||||||
|
double len = self.splines[i]->Length();
|
||||||
|
int n = floor(len/(0.05*min(xdist,ydist)));
|
||||||
|
//cout << n << endl;
|
||||||
|
for (int j = 1; j <= n; j++)
|
||||||
|
{
|
||||||
|
GeomPoint<2> point = self.splines[i]->GetPoint(j*1./n);
|
||||||
|
xpoints.append(point(0));
|
||||||
|
ypoints.append(point(1));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
cout << "spline is neither line nor spline3" << endl;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
return bp::tuple(bp::make_tuple(xlim, ylim, xpoints, ypoints));
|
||||||
|
|
||||||
|
}))
|
||||||
|
.def("PointData", FunctionPointer([](SplineGeometry2d &self)
|
||||||
|
{
|
||||||
|
bp::list xpoints, ypoints, pointindex;
|
||||||
|
|
||||||
|
for (int i = 0; i < self.geompoints.Size(); i++)
|
||||||
|
{
|
||||||
|
pointindex.append(i);
|
||||||
|
xpoints.append(self.geompoints[i][0]);
|
||||||
|
ypoints.append(self.geompoints[i][1]);
|
||||||
|
}
|
||||||
|
return bp::tuple(bp::make_tuple(xpoints, ypoints, pointindex));
|
||||||
|
|
||||||
|
}))
|
||||||
|
.def("SegmentData", FunctionPointer([](SplineGeometry2d &self)
|
||||||
|
{
|
||||||
|
bp::list leftpoints, rightpoints, leftdom, rightdom;
|
||||||
|
|
||||||
|
for (int i = 0; i < self.splines.Size(); i++)
|
||||||
|
{
|
||||||
|
GeomPoint<2> point = self.splines[i]->GetPoint(0.5);
|
||||||
|
Vec<2> normal = self.GetSpline(i).GetTangent(0.5);
|
||||||
|
double temp = normal(0);
|
||||||
|
normal(0) = normal(1);
|
||||||
|
normal(1) = -temp;
|
||||||
|
|
||||||
|
leftdom.append(self.GetSpline(i).leftdom);
|
||||||
|
rightdom.append(self.GetSpline(i).rightdom);
|
||||||
|
|
||||||
|
rightpoints.append(bp::make_tuple(point(0), point(1), normal(0)<0, normal(1)<0));
|
||||||
|
leftpoints.append(bp::make_tuple(point(0), point(1), normal(0)<0, normal(1)<0));
|
||||||
|
}
|
||||||
|
return bp::tuple(bp::make_tuple(leftpoints, rightpoints, leftdom, rightdom));
|
||||||
|
|
||||||
|
}))
|
||||||
|
.def("Print", FunctionPointer([](SplineGeometry2d &self)
|
||||||
|
{
|
||||||
|
for (int i = 0; i < self.geompoints.Size(); i++)
|
||||||
|
{
|
||||||
|
cout << i << " : " << self.geompoints[i][0] << " , " << self.geompoints[i][1] << endl;
|
||||||
|
}
|
||||||
|
//Box<2> box(self.GetBoundingBox());
|
||||||
|
//cout << box.PMin() << endl;
|
||||||
|
//cout << box.PMax() << endl;
|
||||||
|
cout << self.splines.Size() << endl;
|
||||||
|
for (int i = 0; i < self.splines.Size(); i++)
|
||||||
|
{
|
||||||
|
cout << self.splines[i]->GetType() << endl;
|
||||||
|
//cout << i << " : " << self.splines[i]->GetPoint(0.1) << " , " << self.splines[i]->GetPoint(0.5) << endl;
|
||||||
|
}
|
||||||
|
}))
|
||||||
|
.def("GenerateMesh", FunctionPointer([](SplineGeometry2d &self, MeshingParameters & mparam)
|
||||||
|
{
|
||||||
|
Mesh * mesh = NULL;
|
||||||
|
self.GenerateMesh(mesh, mparam, 0, 0);
|
||||||
|
return shared_ptr<Mesh>(mesh);
|
||||||
|
}))
|
||||||
|
|
||||||
|
;
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
Loading…
Reference in New Issue
Block a user