mirror of
https://github.com/NGSolve/netgen.git
synced 2024-12-27 14:20:34 +05:00
621 lines
24 KiB
C++
621 lines
24 KiB
C++
#ifdef NG_PYTHON
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#include <../general/ngpython.hpp>
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#include <csg.hpp>
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using namespace netgen;
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namespace netgen
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{
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extern shared_ptr<NetgenGeometry> ng_geometry;
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}
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// a shadow solid tree using shared pointers.
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class SPSolid
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{
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shared_ptr<SPSolid> s1, s2;
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Solid * solid;
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int bc = -1;
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string bcname = "";
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double maxh = -1;
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string material;
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bool owner;
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double red, green, blue;
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bool transp = false;
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public:
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enum optyp { TERM, SECTION, UNION, SUB };
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SPSolid (Solid * as) : solid(as), owner(true), op(TERM) { ; }
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~SPSolid ()
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{
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; // if (owner) delete solid;
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}
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SPSolid (optyp aop, shared_ptr<SPSolid> as1, shared_ptr<SPSolid> as2)
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: s1(as1), s2(as2), owner(true), op(aop)
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{
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if (aop == UNION)
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solid = new Solid (Solid::UNION, s1->GetSolid(), s2->GetSolid());
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else if (aop == SECTION)
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solid = new Solid (Solid::SECTION, s1->GetSolid(), s2->GetSolid());
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else if (aop == SUB)
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solid = new Solid (Solid::SUB, s1->GetSolid()); // , s2->GetSolid());
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}
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Solid * GetSolid() { return solid; }
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const Solid * GetSolid() const { return solid; }
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void GiveUpOwner()
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{
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owner = false;
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if (s1) s1 -> GiveUpOwner();
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if (s2) s2 -> GiveUpOwner();
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}
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void AddSurfaces(CSGeometry & geom)
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{
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if (op == TERM)
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geom.AddSurfaces (solid->GetPrimitive());
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if (s1) s1 -> AddSurfaces (geom);
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if (s2) s2 -> AddSurfaces (geom);
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}
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void SetMaterial (string mat) { material = mat; }
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string GetMaterial ()
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{
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if (!material.empty()) return material;
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if (s1)
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{
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string s1mat = s1->GetMaterial();
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if (!s1mat.empty()) return s1mat;
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}
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if (s2)
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{
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string s2mat = s2->GetMaterial();
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if (!s2mat.empty()) return s2mat;
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}
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return material;
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}
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void SetBC(int abc)
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{
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if (bc == -1)
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{
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bc = abc;
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if (s1) s1 -> SetBC(bc);
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if (s2) s2 -> SetBC(bc);
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if (op == TERM)
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{
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Primitive * prim = solid -> GetPrimitive();
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for (int i = 0; i < prim->GetNSurfaces(); i++)
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prim->GetSurface(i).SetBCProperty (abc);
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// cout << "set " << prim->GetNSurfaces() << " surfaces to bc " << bc << endl;
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}
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}
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}
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void SetBCName(string name)
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{
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if (bcname == "")
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{
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bcname = name;
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if (s1) s1 -> SetBCName(name);
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if (s2) s2 -> SetBCName(name);
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if (op == TERM)
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{
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Primitive * prim = solid -> GetPrimitive();
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for (int i = 0; i < prim->GetNSurfaces(); i++)
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prim->GetSurface(i).SetBCName (name);
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// cout << "set " << prim->GetNSurfaces() << " surfaces to bc " << bc << endl;
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}
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}
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}
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void SetMaxH(double amaxh)
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{
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if (maxh == -1)
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{
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maxh = amaxh;
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if (s1) s1 -> SetMaxH(maxh);
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if (s2) s2 -> SetMaxH(maxh);
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if (op == TERM)
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{
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Primitive * prim = solid -> GetPrimitive();
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for (int i = 0; i < prim->GetNSurfaces(); i++)
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prim->GetSurface(i).SetMaxH (maxh);
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}
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}
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}
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void SetColor(double ared, double agreen, double ablue)
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{
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red = ared;
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green = agreen;
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blue = ablue;
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}
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double GetRed() const { return red; }
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double GetGreen() const { return green; }
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double GetBlue() const { return blue; }
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void SetTransparent() { transp = true; }
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bool IsTransparent() { return transp; }
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private:
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optyp op;
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};
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inline ostream & operator<< (ostream & ost, const SPSolid & sol)
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{
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ost << *sol.GetSolid();
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return ost;
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}
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namespace netgen
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{
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extern CSGeometry * ParseCSG (istream & istr, CSGeometry *instance=nullptr);
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}
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DLL_HEADER void ExportCSG(py::module &m)
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{
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py::class_<SplineGeometry<2>> (m, "SplineCurve2d")
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.def(py::init<>())
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.def ("AddPoint", FunctionPointer
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([] (SplineGeometry<2> & self, double x, double y)
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{
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self.geompoints.Append (GeomPoint<2> (Point<2> (x,y)));
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return self.geompoints.Size()-1;
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}))
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.def ("AddSegment", FunctionPointer
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([] (SplineGeometry<2> & self, int i1, int i2)
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{
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self.splines.Append (new LineSeg<2> (self.geompoints[i1], self.geompoints[i2]));
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}))
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.def ("AddSegment", FunctionPointer
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([] (SplineGeometry<2> & self, int i1, int i2, int i3)
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{
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self.splines.Append (new SplineSeg3<2> (self.geompoints[i1], self.geompoints[i2], self.geompoints[i3]));
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}))
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;
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py::class_<SplineGeometry<3>,shared_ptr<SplineGeometry<3>>> (m,"SplineCurve3d")
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.def(py::init<>())
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.def ("AddPoint", FunctionPointer
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([] (SplineGeometry<3> & self, double x, double y, double z)
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{
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self.geompoints.Append (GeomPoint<3> (Point<3> (x,y,z)));
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return self.geompoints.Size()-1;
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}))
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.def ("AddSegment", FunctionPointer
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([] (SplineGeometry<3> & self, int i1, int i2)
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{
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self.splines.Append (new LineSeg<3> (self.geompoints[i1], self.geompoints[i2]));
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}))
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.def ("AddSegment", FunctionPointer
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([] (SplineGeometry<3> & self, int i1, int i2, int i3)
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{
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self.splines.Append (new SplineSeg3<3> (self.geompoints[i1], self.geompoints[i2], self.geompoints[i3]));
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}))
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;
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py::class_<SplineSurface, shared_ptr<SplineSurface>> (m, "SplineSurface",
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"A surface for co dim 2 integrals on the splines")
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.def("__init__", FunctionPointer ([](SplineSurface* instance, shared_ptr<SPSolid> base, py::list cuts)
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{
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auto primitive = dynamic_cast<OneSurfacePrimitive*> (base->GetSolid()->GetPrimitive());
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auto acuts = new Array<OneSurfacePrimitive*>();
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for(int i = 0; i<py::len(cuts);i++)
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{
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py::extract<shared_ptr<SPSolid>> sps(cuts[i]);
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if(!sps.check())
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throw NgException("Cut must be SurfacePrimitive in constructor of SplineSurface!");
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auto sp = dynamic_cast<OneSurfacePrimitive*>(sps()->GetSolid()->GetPrimitive());
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if(sp)
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acuts->Append(sp);
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else
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throw NgException("Cut must be SurfacePrimitive in constructor of SplineSurface!");
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}
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if(!primitive)
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throw NgException("Base is not a SurfacePrimitive in constructor of SplineSurface!");
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new (instance) SplineSurface(primitive,acuts);
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}),py::arg("base"), py::arg("cuts")=py::list())
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.def("AddPoint", FunctionPointer
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([] (SplineSurface & self, double x, double y, double z, bool hpref)
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{
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self.AppendPoint(Point<3>(x,y,z),hpref);
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return self.GetNP()-1;
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}),
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py::arg("x"),py::arg("y"),py::arg("z"),py::arg("hpref")=false)
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.def("AddSegment", FunctionPointer
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([] (SplineSurface & self, int i1, int i2, string bcname, double maxh)
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{
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auto str = new string(bcname);
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self.AppendSegment(new LineSeg<3>(self.GetPoint(i1),self.GetPoint(i2)),str,maxh);
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}),
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py::arg("pnt1"),py::arg("pnt2"),py::arg("bcname")="default", py::arg("maxh")=-1.)
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;
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py::class_<SPSolid, shared_ptr<SPSolid>> (m, "Solid")
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.def ("__str__", &ToString<SPSolid>)
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.def ("__add__", FunctionPointer( [] ( shared_ptr<SPSolid> self, shared_ptr<SPSolid> other) { return make_shared<SPSolid> (SPSolid::UNION, self, other); }))
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.def ("__mul__", FunctionPointer( [] ( shared_ptr<SPSolid> self, shared_ptr<SPSolid> other) { return make_shared<SPSolid> (SPSolid::SECTION, self, other); }))
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.def ("__sub__", FunctionPointer
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([] ( shared_ptr<SPSolid> self, shared_ptr<SPSolid> other)
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{ return make_shared<SPSolid> (SPSolid::SECTION, self,
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make_shared<SPSolid> (SPSolid::SUB, other, nullptr)); }))
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.def ("bc", FunctionPointer([](shared_ptr<SPSolid> & self, int nr) -> shared_ptr<SPSolid>
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{ self->SetBC(nr); return self; }))
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.def ("bc", FunctionPointer([](shared_ptr<SPSolid> & self, string name) -> shared_ptr<SPSolid>
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{ self->SetBCName(name); return self; }))
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.def ("maxh", FunctionPointer([](shared_ptr<SPSolid> & self, double maxh) -> shared_ptr<SPSolid>
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{ self->SetMaxH(maxh); return self; }))
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.def ("mat", FunctionPointer([](shared_ptr<SPSolid> & self, string mat) -> shared_ptr<SPSolid>
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{ self->SetMaterial(mat); return self; }))
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.def ("mat", &SPSolid::GetMaterial)
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.def("col", FunctionPointer([](shared_ptr<SPSolid> & self, py::list rgb) -> shared_ptr<SPSolid>
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{
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py::extract<double> red(rgb[0]);
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py::extract<double> green(rgb[1]);
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py::extract<double> blue(rgb[2]);
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self->SetColor(red(),green(),blue());
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return self;
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}))
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.def("transp", FunctionPointer([](shared_ptr<SPSolid> & self)->shared_ptr < SPSolid > { self->SetTransparent(); return self; }))
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;
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m.def ("Sphere", FunctionPointer([](Point<3> c, double r)
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{
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Sphere * sp = new Sphere (c, r);
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Solid * sol = new Solid (sp);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Plane", FunctionPointer([](Point<3> p, Vec<3> n)
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{
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Plane * sp = new Plane (p,n);
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Solid * sol = new Solid (sp);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Cone", FunctionPointer([](Point<3> a, Point<3> b, double ra, double rb)
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{
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Cone * cyl = new Cone (a, b, ra, rb);
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Solid * sol = new Solid (cyl);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Cylinder", FunctionPointer([](Point<3> a, Point<3> b, double r)
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{
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Cylinder * cyl = new Cylinder (a, b, r);
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Solid * sol = new Solid (cyl);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("OrthoBrick", FunctionPointer([](Point<3> p1, Point<3> p2)
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{
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OrthoBrick * brick = new OrthoBrick (p1,p2);
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Solid * sol = new Solid (brick);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Torus", FunctionPointer([](Point<3> c, Vec<3> n, double R, double r)
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{
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Torus * torus = new Torus (c,n,R,r);
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Solid * sol = new Solid (torus);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Revolution", FunctionPointer([](Point<3> p1, Point<3> p2,
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const SplineGeometry<2> & spline)
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{
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Revolution * rev = new Revolution (p1, p2, spline);
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Solid * sol = new Solid(rev);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Extrusion", FunctionPointer([](const SplineGeometry<3> & path,
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const SplineGeometry<2> & profile,
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Vec<3> n)
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{
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Extrusion * extr = new Extrusion (path,profile,n);
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Solid * sol = new Solid(extr);
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return make_shared<SPSolid> (sol);
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}));
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m.def ("Or", FunctionPointer([](shared_ptr<SPSolid> s1, shared_ptr<SPSolid> s2)
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{
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return make_shared<SPSolid> (SPSolid::UNION, s1, s2);
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}));
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m.def ("And", FunctionPointer([](shared_ptr<SPSolid> s1, shared_ptr<SPSolid> s2)
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{
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return make_shared<SPSolid> (SPSolid::SECTION, s1, s2);
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}));
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py::class_<CSGeometry, NetgenGeometry, shared_ptr<CSGeometry>> (m, "CSGeometry")
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.def(py::init<>())
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.def("__init__",
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[](CSGeometry *instance, const string & filename)
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{
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cout << "load geometry";
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ifstream ist(filename);
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ParseCSG(ist, instance);
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instance -> FindIdenticSurfaces(1e-8 * instance->MaxSize());
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})
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.def("__init__",
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[](CSGeometry *instance, const py::list & solidlist)
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{
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cout << "csg from list";
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new (instance) CSGeometry();
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for (int i = 0; i < len(solidlist); i++)
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{
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py::object obj = solidlist[i];
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cout << "obj " << i << endl;
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py::extract<shared_ptr<SPSolid>> solid(solidlist[i]);
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if(solid.check())
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{
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cout << "its a solid" << endl;
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solid()->AddSurfaces (*instance);
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solid()->GiveUpOwner();
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int tlonr = instance->SetTopLevelObject (solid()->GetSolid());
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instance->GetTopLevelObject(tlonr) -> SetMaterial(solid()->GetMaterial());
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}
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}
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instance -> FindIdenticSurfaces(1e-8 * instance->MaxSize());
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})
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.def("Save", FunctionPointer([] (CSGeometry & self, string filename)
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{
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cout << "save geometry to file " << filename << endl;
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self.Save (filename);
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}))
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.def("Add",
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[] (CSGeometry & self, shared_ptr<SPSolid> solid, py::list bcmod)
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{
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solid->AddSurfaces (self);
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solid->GiveUpOwner();
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int tlonr = self.SetTopLevelObject (solid->GetSolid());
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self.GetTopLevelObject(tlonr) -> SetMaterial(solid->GetMaterial());
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self.GetTopLevelObject(tlonr) -> SetRGB(solid->GetRed(),solid->GetGreen(),solid->GetBlue());
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self.GetTopLevelObject(tlonr)->SetTransparent(solid->IsTransparent());
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// bcmod is list of tuples ( solid, bcnr )
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for (int i = 0; i < py::len(bcmod); i++)
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{
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py::tuple tup = py::extract<py::tuple> (bcmod[i]) ();
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auto mod_solid = py::extract<shared_ptr<SPSolid>> (tup[0]) ();
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int mod_nr = -1;
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string * bcname = nullptr;
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py::object val = tup[1];
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if (py::extract<int>(val).check()) mod_nr = py::extract<int> (val)();
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if (py::extract<string>(val).check()) bcname = new string ( py::extract<string> (val)());
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Array<int> si;
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mod_solid -> GetSolid() -> GetSurfaceIndices (si);
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// cout << "change bc on surfaces: " << si << " to " << mod_nr << endl;
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for (int j = 0; j < si.Size(); j++)
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{
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CSGeometry::BCModification bcm;
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bcm.bcname = bcname ? new string (*bcname) : nullptr;
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bcm.tlonr = tlonr;
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bcm.si = si[j];
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bcm.bcnr = mod_nr;
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self.bcmodifications.Append (bcm);
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}
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delete bcname;
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}
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return tlonr;
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},
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py::arg("solid"), py::arg("bcmod")=py::list()
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)
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.def("AddSurface", FunctionPointer
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([] (CSGeometry & self, shared_ptr<SPSolid> surface, shared_ptr<SPSolid> solid)
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{
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solid->AddSurfaces (self);
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solid->GiveUpOwner();
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Surface & surf = surface->GetSolid()->GetPrimitive()->GetSurface();
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int tlonr = self.SetTopLevelObject (solid->GetSolid(), &surf);
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// self.GetTopLevelObject(tlonr) -> SetMaterial(solid->GetMaterial());
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self.GetTopLevelObject(tlonr) -> SetBCProp(surf.GetBCProperty());
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self.GetTopLevelObject(tlonr) -> SetBCName(surf.GetBCName());
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self.GetTopLevelObject(tlonr) -> SetRGB(solid->GetRed(),solid->GetGreen(),solid->GetBlue());
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self.GetTopLevelObject(tlonr)->SetTransparent(solid->IsTransparent());
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}),
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py::arg("surface"), py::arg("solid")
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)
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.def("AddSplineSurface", FunctionPointer
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([] (CSGeometry & self, shared_ptr<SplineSurface> surf)
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{
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auto cuttings = surf->CreateCuttingSurfaces();
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auto spsol = make_shared<SPSolid>(new Solid(&*surf));
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for(auto cut : (*cuttings)){
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spsol = make_shared<SPSolid>(SPSolid::SECTION,spsol,make_shared<SPSolid>(new Solid(cut)));
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}
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spsol->AddSurfaces(self);
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int tlonr = self.SetTopLevelObject(spsol->GetSolid(), &*surf);
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for(auto p : surf->GetPoints())
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self.AddUserPoint(p);
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}),
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py::arg("SplineSurface"))
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.def("CloseSurfaces", FunctionPointer
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([] (CSGeometry & self, shared_ptr<SPSolid> s1, shared_ptr<SPSolid> s2, py::list aslices )
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{
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Array<int> si1, si2;
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s1->GetSolid()->GetSurfaceIndices (si1);
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s2->GetSolid()->GetSurfaceIndices (si2);
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cout << "surface ids1 = " << si1 << endl;
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cout << "surface ids2 = " << si2 << endl;
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Flags flags;
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try
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{
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int n = py::len(aslices);
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Array<double> slices(n);
|
|
for(int i=0; i<n; i++)
|
|
{
|
|
slices[i]= py::extract<double>(aslices[i])();
|
|
}
|
|
flags.SetFlag("slices", slices);
|
|
}
|
|
catch( py::error_already_set const & ) {
|
|
cout << "caught python error:" << endl;
|
|
PyErr_Print();
|
|
}
|
|
|
|
const TopLevelObject * domain = nullptr;
|
|
self.AddIdentification
|
|
(new CloseSurfaceIdentification
|
|
(self.GetNIdentifications()+1, self,
|
|
self.GetSurface (si1[0]), self.GetSurface (si2[0]),
|
|
domain,
|
|
flags));
|
|
}),
|
|
py::arg("solid1"), py::arg("solid2"), py::arg("slices")
|
|
)
|
|
.def("CloseSurfaces", FunctionPointer
|
|
([] (CSGeometry & self, shared_ptr<SPSolid> s1, shared_ptr<SPSolid> s2, int reflevels)
|
|
{
|
|
Array<int> si1, si2;
|
|
s1->GetSolid()->GetSurfaceIndices (si1);
|
|
s2->GetSolid()->GetSurfaceIndices (si2);
|
|
cout << "surface ids1 = " << si1 << endl;
|
|
cout << "surface ids2 = " << si2 << endl;
|
|
|
|
Flags flags;
|
|
const TopLevelObject * domain = nullptr;
|
|
self.AddIdentification
|
|
(new CloseSurfaceIdentification
|
|
(self.GetNIdentifications()+1, self,
|
|
self.GetSurface (si1[0]), self.GetSurface (si2[0]),
|
|
domain,
|
|
flags));
|
|
}),
|
|
py::arg("solid1"), py::arg("solid2"), py::arg("reflevels")=2
|
|
)
|
|
|
|
.def("PeriodicSurfaces", FunctionPointer
|
|
([] (CSGeometry & self, shared_ptr<SPSolid> s1, shared_ptr<SPSolid> s2)
|
|
{
|
|
Array<int> si1, si2;
|
|
s1->GetSolid()->GetSurfaceIndices (si1);
|
|
s2->GetSolid()->GetSurfaceIndices (si2);
|
|
cout << "identify surfaces " << si1[0] << " and " << si2[0] << endl;
|
|
self.AddIdentification
|
|
(new PeriodicIdentification
|
|
(self.GetNIdentifications()+1, self,
|
|
self.GetSurface (si1[0]), self.GetSurface (si2[0])));
|
|
}),
|
|
py::arg("solid1"), py::arg("solid2")
|
|
)
|
|
|
|
.def("GetTransparent", FunctionPointer
|
|
([] (CSGeometry & self, int tlonr)
|
|
{
|
|
return self.GetTopLevelObject(tlonr)->GetTransparent();
|
|
}),
|
|
py::arg("tlonr")
|
|
)
|
|
.def("SetTransparent", FunctionPointer
|
|
([] (CSGeometry & self, int tlonr, bool transparent)
|
|
{
|
|
self.GetTopLevelObject(tlonr)->SetTransparent(transparent);
|
|
}),
|
|
py::arg("tlonr"), py::arg("transparent")
|
|
)
|
|
|
|
.def("GetVisible", FunctionPointer
|
|
([] (CSGeometry & self, int tlonr)
|
|
{
|
|
return self.GetTopLevelObject(tlonr)->GetVisible();
|
|
}),
|
|
py::arg("tlonr")
|
|
)
|
|
.def("SetVisible", FunctionPointer
|
|
([] (CSGeometry & self, int tlonr, bool visible)
|
|
{
|
|
self.GetTopLevelObject(tlonr)->SetVisible(visible);
|
|
}),
|
|
py::arg("tlonr"), py::arg("visible")
|
|
)
|
|
.def("SetBoundingBox", FunctionPointer
|
|
([] (CSGeometry & self, Point<3> pmin, Point<3> pmax)
|
|
{
|
|
self.SetBoundingBox(Box<3> (pmin, pmax));
|
|
}),
|
|
py::arg("pmin"), py::arg("pmax")
|
|
)
|
|
.def("Draw", FunctionPointer
|
|
([] (shared_ptr<CSGeometry> self)
|
|
{
|
|
self->FindIdenticSurfaces(1e-6);
|
|
self->CalcTriangleApproximation(0.01, 20);
|
|
ng_geometry = self;
|
|
})
|
|
)
|
|
.def_property_readonly ("ntlo", &CSGeometry::GetNTopLevelObjects)
|
|
;
|
|
|
|
m.def("GenerateMesh", FunctionPointer
|
|
([](shared_ptr<CSGeometry> geo, MeshingParameters & param)
|
|
{
|
|
auto dummy = make_shared<Mesh>();
|
|
SetGlobalMesh (dummy);
|
|
dummy->SetGeometry(geo);
|
|
ng_geometry = geo;
|
|
geo->FindIdenticSurfaces(1e-8 * geo->MaxSize());
|
|
try
|
|
{
|
|
geo->GenerateMesh (dummy, param);
|
|
}
|
|
catch (NgException ex)
|
|
{
|
|
cout << "Caught NgException: " << ex.What() << endl;
|
|
}
|
|
return dummy;
|
|
}))
|
|
;
|
|
|
|
m.def("Save", FunctionPointer
|
|
([](const Mesh & self, const string & filename, const CSGeometry & geom)
|
|
{
|
|
ostream * outfile;
|
|
if (filename.substr (filename.length()-3, 3) == ".gz")
|
|
outfile = new ogzstream (filename.c_str());
|
|
else
|
|
outfile = new ofstream (filename.c_str());
|
|
|
|
self.Save (*outfile);
|
|
*outfile << endl << endl << "endmesh" << endl << endl;
|
|
geom.SaveToMeshFile (*outfile);
|
|
delete outfile;
|
|
}))
|
|
;
|
|
|
|
|
|
|
|
m.def("ZRefinement", FunctionPointer
|
|
([](Mesh & mesh, CSGeometry & geom)
|
|
{
|
|
ZRefinementOptions opt;
|
|
opt.minref = 5;
|
|
ZRefinement (mesh, &geom, opt);
|
|
}))
|
|
;
|
|
}
|
|
|
|
PYBIND11_PLUGIN(libcsg) {
|
|
py::module m("csg", "pybind csg");
|
|
ExportCSG(m);
|
|
return m.ptr();
|
|
}
|
|
#endif
|
|
|