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3a937d1f36
netgen/libsrc/interface/nginterface_v2.cpp
Joachim Schöberl 3a937d1f36 1d mesh with 0d boundary elements
2015-11-11 18:46:21 +01:00

740 lines
17 KiB
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#include <meshing.hpp>
#ifdef SOCKETS
#include "../sockets/sockets.hpp"
#endif
#include "nginterface.h"
#include "nginterface_v2.hpp"
// #include <visual.hpp>
namespace netgen
{
#include "writeuser.hpp"
extern shared_ptr<Mesh> mesh;
}
namespace netgen
{
#define NGX_INLINE
#include "nginterface_v2_impl.hpp"
shared_ptr<Mesh> Ngx_Mesh :: SelectMesh () const
{
shared_ptr<Mesh> hmesh = netgen::mesh;
netgen::mesh = mesh;
SetGlobalMesh (mesh);
return hmesh;
}
Ngx_Mesh :: Ngx_Mesh (shared_ptr<Mesh> amesh)
{
if (amesh)
mesh = amesh;
else
mesh = netgen::mesh;
}
Ngx_Mesh * LoadMesh (const string & filename)
{
netgen::mesh.reset();
Ng_LoadMesh (filename.c_str());
return new Ngx_Mesh (netgen::mesh);
}
void Ngx_Mesh :: LoadMesh (const string & filename)
{
netgen::mesh.reset();
Ng_LoadMesh (filename.c_str());
// mesh = move(netgen::mesh);
mesh = netgen::mesh;
}
void Ngx_Mesh :: LoadMesh (istream & ist)
{
netgen::mesh = make_shared<Mesh>();
netgen::mesh -> Load (ist);
// mesh = move(netgen::mesh);
mesh = netgen::mesh;
SetGlobalMesh (mesh);
}
void Ngx_Mesh :: SaveMesh (ostream & ost) const
{
mesh -> Save (ost);
}
void Ngx_Mesh :: DoArchive (ngstd::Archive & archive)
{
if (archive.Output())
{
stringstream str;
SaveMesh (str);
string st = str.str();
archive & st;
}
else
{
string st;
archive & st;
stringstream str(st);
LoadMesh (str);
}
}
void Ngx_Mesh :: UpdateTopology ()
{
if (mesh)
mesh -> UpdateTopology();
}
/*
Ngx_Mesh :: Ngx_Mesh (Mesh * amesh)
: mesh(amesh)
{ ; }
*/
Ngx_Mesh :: ~Ngx_Mesh ()
{
if (mesh == netgen::mesh)
netgen::mesh = nullptr;
}
int Ngx_Mesh :: GetDimension() const
{
return mesh -> GetDimension();
}
int Ngx_Mesh :: GetNLevels() const
{
return mesh -> mglevels;
}
int Ngx_Mesh :: GetNElements (int dim) const
{
switch (dim)
{
case 0: return mesh -> pointelements.Size();
case 1: return mesh -> GetNSeg();
case 2: return mesh -> GetNSE();
case 3: return mesh -> GetNE();
}
return -1;
}
int Ngx_Mesh :: GetNNodes (int nt) const
{
switch (nt)
{
case 0: return mesh -> GetNV();
case 1: return mesh->GetTopology().GetNEdges();
case 2: return mesh->GetTopology().GetNFaces();
case 3: return mesh -> GetNE();
}
return -1;
}
/*
Ng_Point Ngx_Mesh :: GetPoint (int nr) const
{
return Ng_Point (&mesh->Point(nr + PointIndex::BASE)(0));
}
*/
/*
template <> DLL_HEADER Ng_Element Ngx_Mesh :: GetElement<0> (int nr) const
{
const Element0d & el = mesh->pointelements[nr];
Ng_Element ret;
ret.type = NG_PNT;
ret.index = el.index;
ret.points.num = 1;
ret.points.ptr = (int*)&el.pnum;
ret.vertices.num = 1;
ret.vertices.ptr = (int*)&el.pnum;
ret.edges.num = 0;
ret.edges.ptr = NULL;
ret.faces.num = 0;
ret.faces.ptr = NULL;
return ret;
}
*/
/*
template <> DLL_HEADER Ng_Element Ngx_Mesh :: GetElement<1> (int nr) const
{
const Segment & el = mesh->LineSegment (SegmentIndex(nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&(el[0]);
ret.vertices.num = 2;
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = 1;
ret.edges.ptr = mesh->GetTopology().GetSegmentElementEdgesPtr (nr);
ret.faces.num = 0;
ret.faces.ptr = NULL;
return ret;
}
template <> DLL_HEADER Ng_Element Ngx_Mesh :: GetElement<2> (int nr) const
{
const Element2d & el = mesh->SurfaceElement (SurfaceElementIndex (nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&el[0];
ret.vertices.num = el.GetNV();
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = MeshTopology::GetNEdges (el.GetType());
ret.edges.ptr = mesh->GetTopology().GetSurfaceElementEdgesPtr (nr);
ret.faces.num = MeshTopology::GetNFaces (el.GetType());
ret.faces.ptr = mesh->GetTopology().GetSurfaceElementFacesPtr (nr);
return ret;
}
template <> DLL_HEADER Ng_Element Ngx_Mesh :: GetElement<3> (int nr) const
{
const Element & el = mesh->VolumeElement (ElementIndex (nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&el[0];
ret.vertices.num = el.GetNV();
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = MeshTopology::GetNEdges (el.GetType());
ret.edges.ptr = mesh->GetTopology().GetElementEdgesPtr (nr);
ret.faces.num = MeshTopology::GetNFaces (el.GetType());
ret.faces.ptr = mesh->GetTopology().GetElementFacesPtr (nr);
return ret;
}
*/
/*
template <>
DLL_HEADER int Ngx_Mesh :: GetElementIndex<0> (int nr) const
{
return 0;
}
template <>
DLL_HEADER int Ngx_Mesh :: GetElementIndex<1> (int nr) const
{
return (*mesh)[SegmentIndex(nr)].si;
}
template <>
DLL_HEADER int Ngx_Mesh :: GetElementIndex<2> (int nr) const
{
int ind = (*mesh)[SurfaceElementIndex(nr)].GetIndex();
return mesh->GetFaceDescriptor(ind).BCProperty();
}
template <>
DLL_HEADER int Ngx_Mesh :: GetElementIndex<3> (int nr) const
{
return (*mesh)[ElementIndex(nr)].GetIndex();
}
*/
/*
DLL_HEADER Ng_Point Ng_GetPoint (int nr)
{
Ng_Point ret;
ret.pt = &mesh->Point(nr + PointIndex::BASE)(0);
return ret;
}
template <>
DLL_HEADER int Ng_GetElementIndex<1> (int nr)
{
return (*mesh)[SegmentIndex(nr)].si;
}
template <>
DLL_HEADER int Ng_GetElementIndex<2> (int nr)
{
int ind = (*mesh)[SurfaceElementIndex(nr)].GetIndex();
return mesh->GetFaceDescriptor(ind).BCProperty();
}
template <>
DLL_HEADER int Ng_GetElementIndex<3> (int nr)
{
return (*mesh)[ElementIndex(nr)].GetIndex();
}
template <> int DLL_HEADER Ng_GetNElements<0> ()
{
return 0;
}
template <> int DLL_HEADER Ng_GetNElements<1> ()
{
return mesh->GetNSeg();
}
template <> DLL_HEADER int Ng_GetNElements<2> ()
{
return mesh->GetNSE();
}
template <> DLL_HEADER int Ng_GetNElements<3> ()
{
return mesh->GetNE();
}
template <> DLL_HEADER Ng_Element Ng_GetElement<0> (int nr)
{
cout << "Netgen does not support 0-D elements" << endl;
Ng_Element ret;
return ret;
}
template <> DLL_HEADER Ng_Element Ng_GetElement<1> (int nr)
{
const Segment & el = mesh->LineSegment (SegmentIndex(nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&(el[0]);
ret.vertices.num = 2;
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = 1;
ret.edges.ptr = mesh->GetTopology().GetSegmentElementEdgesPtr (nr);
ret.faces.num = 0;
ret.faces.ptr = NULL;
return ret;
}
template <> DLL_HEADER Ng_Element Ng_GetElement<2> (int nr)
{
const Element2d & el = mesh->SurfaceElement (SurfaceElementIndex (nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&el[0];
ret.vertices.num = el.GetNV();
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = MeshTopology::GetNEdges (el.GetType());
ret.edges.ptr = mesh->GetTopology().GetSurfaceElementEdgesPtr (nr);
ret.faces.num = MeshTopology::GetNFaces (el.GetType());
ret.faces.ptr = mesh->GetTopology().GetSurfaceElementFacesPtr (nr);
return ret;
}
template <> DLL_HEADER Ng_Element Ng_GetElement<3> (int nr)
{
const Element & el = mesh->VolumeElement (ElementIndex (nr));
Ng_Element ret;
ret.type = NG_ELEMENT_TYPE(el.GetType());
ret.points.num = el.GetNP();
ret.points.ptr = (int*)&el[0];
ret.vertices.num = el.GetNV();
ret.vertices.ptr = (int*)&(el[0]);
ret.edges.num = MeshTopology::GetNEdges (el.GetType());
ret.edges.ptr = mesh->GetTopology().GetElementEdgesPtr (nr);
ret.faces.num = MeshTopology::GetNFaces (el.GetType());
ret.faces.ptr = mesh->GetTopology().GetElementFacesPtr (nr);
return ret;
}
*/
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<3,3> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
Point<3> xl(xi[0], xi[1], xi[2]);
Point<3> xg;
Mat<3,3> dx;
mesh->GetCurvedElements().CalcElementTransformation (xl, elnr, xg, dx);
if (x)
for (int i = 0; i < 3; i++) x[i] = xg(i);
if (dxdxi)
for (int i=0; i<3; i++)
{
dxdxi[3*i] = dx(i,0);
dxdxi[3*i+1] = dx(i,1);
dxdxi[3*i+2] = dx(i,2);
}
}
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<2,3> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
Point<2> xl(xi[0], xi[1]);
Point<3> xg;
Mat<3,2> dx;
mesh->GetCurvedElements().CalcSurfaceTransformation (xl, elnr, xg, dx);
if (x)
for (int i = 0; i < 3; i++) x[i] = xg(i);
if (dxdxi)
for (int i=0; i<3; i++)
{
dxdxi[2*i] = dx(i,0);
dxdxi[2*i+1] = dx(i,1);
}
}
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<2,2> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
Point<2> xl(xi[0], xi[1]);
Point<3> xg;
Mat<3,2> dx;
mesh->GetCurvedElements().CalcSurfaceTransformation (xl, elnr, xg, dx);
if (x)
for (int i = 0; i < 2; i++) x[i] = xg(i);
if (dxdxi)
for (int i=0; i<2; i++)
{
dxdxi[2*i] = dx(i,0);
dxdxi[2*i+1] = dx(i,1);
}
}
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<1,2> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
Point<3> xg;
Vec<3> dx;
mesh->GetCurvedElements().CalcSegmentTransformation (xi[0], elnr, xg, dx);
if (x)
for (int i = 0; i < 2; i++) x[i] = xg(i);
if (dxdxi)
for (int i=0; i < 2; i++)
dxdxi[i] = dx(i);
}
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<1,1> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
Point<3> xg;
Vec<3> dx;
mesh->GetCurvedElements().CalcSegmentTransformation (xi[0], elnr, xg, dx);
if (x) x[0] = xg(0);
if (dxdxi) dxdxi[0] = dx(0);
}
template <> DLL_HEADER void Ngx_Mesh ::
ElementTransformation<0,1> (int elnr,
const double * xi,
double * x,
double * dxdxi) const
{
PointIndex pnum = mesh->pointelements[elnr].pnum;
if (x) x[0] = (*mesh)[pnum](0);
if (dxdxi) dxdxi[0] = 0;
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<3,3> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
mesh->GetCurvedElements().CalcMultiPointElementTransformation (elnr, npts, xi, sxi, x, sx, dxdxi, sdxdxi);
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<2,2> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
mesh->GetCurvedElements().CalcMultiPointSurfaceTransformation<2> (elnr, npts, xi, sxi, x, sx, dxdxi, sdxdxi);
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<2,3> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
mesh->GetCurvedElements().CalcMultiPointSurfaceTransformation<3> (elnr, npts, xi, sxi, x, sx, dxdxi, sdxdxi);
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<1,2> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
mesh->GetCurvedElements().CalcMultiPointSegmentTransformation<2> (elnr, npts, xi, sxi, x, sx, dxdxi, sdxdxi);
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<1,1> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
for (int i = 0; i < npts; i++)
ElementTransformation<1,1> (elnr, xi + i*sxi, x+i*sx, dxdxi+i*sdxdxi);
}
template <> DLL_HEADER void Ngx_Mesh ::
MultiElementTransformation<0,1> (int elnr, int npts,
const double * xi, size_t sxi,
double * x, size_t sx,
double * dxdxi, size_t sdxdxi) const
{
for (int i = 0; i < npts; i++)
ElementTransformation<0,1> (elnr, xi + i*sxi, x+i*sx, dxdxi+i*sdxdxi);
}
template <> DLL_HEADER int Ngx_Mesh :: GetNNodes<1> ()
{
return mesh->GetTopology().GetNEdges();
}
template <> DLL_HEADER int Ngx_Mesh :: GetNNodes<2> ()
{
return mesh->GetTopology().GetNFaces();
}
template <> DLL_HEADER Ng_Node<1> Ngx_Mesh :: GetNode<1> (int nr) const
{
Ng_Node<1> node;
node.vertices.ptr = mesh->GetTopology().GetEdgeVerticesPtr(nr);
return node;
}
template <> DLL_HEADER Ng_Node<2> Ngx_Mesh :: GetNode<2> (int nr) const
{
Ng_Node<2> node;
node.vertices.ptr = mesh->GetTopology().GetFaceVerticesPtr(nr);
node.vertices.nv = (node.vertices.ptr[3] == 0) ? 3 : 4;
return node;
}
template <>
DLL_HEADER int Ngx_Mesh :: FindElementOfPoint <1>
(double * hp, double * lami,
bool build_searchtree,
int * const indices, int numind) const
{
if (mesh->GetDimension() != 1)
throw NgException("FindElementOfPoint<1> called for multidim mesh");
Point<3> p(hp[0], 0,0);
for (SegmentIndex si = 0; si < mesh->GetNSeg(); si++)
{
auto & seg = (*mesh)[si];
Point<3> p1 = (*mesh)[seg[0]];
Point<3> p2 = (*mesh)[seg[1]];
double lam = (p(0)-p1(0)) / (p2(0)-p1(0));
if (lam >= -1e-10 && lam <= 1+1e-10)
{
lami[0] = 1-lam;
return si;
}
}
return -1;
}
template <>
DLL_HEADER int Ngx_Mesh :: FindElementOfPoint <2>
(double * p, double * lami,
bool build_searchtree,
int * const indices, int numind) const
{
Array<int> dummy(numind);
for (int i = 0; i < numind; i++) dummy[i] = indices[i]+1;
double lam3[3];
Point<3> p2d(p[0], p[1], 0);
int ind =
mesh->GetElementOfPoint(p2d, lam3, &dummy, build_searchtree);
if (ind > 0)
{
if(mesh->SurfaceElement(ind).GetType()==QUAD)
{
lami[0] = lam3[0];
lami[1] = lam3[1];
}
else
{
lami[0] = 1-lam3[0]-lam3[1];
lami[1] = lam3[0];
}
}
return ind-1;
}
template <>
DLL_HEADER int Ngx_Mesh :: FindElementOfPoint <3>
(double * p, double * lami,
bool build_searchtree,
int * const indices, int numind) const
{
Array<int> dummy(numind);
for (int i = 0; i < numind; i++) dummy[i] = indices[i]+1;
Point<3> p3d(p[0], p[1], p[2]);
int ind =
mesh->GetElementOfPoint(p3d, lami, &dummy, build_searchtree);
return ind-1;
}
#ifdef PARALLEL
std::tuple<int,int*> Ngx_Mesh :: GetDistantProcs (int nodetype, int locnum) const
{
switch (nodetype)
{
case 0:
{
FlatArray<int> dn = mesh->GetParallelTopology().GetDistantPNums(locnum);
return std::tuple<int,int*>(dn.Size(), &dn[0]);
}
case 1:
{
FlatArray<int> dn = mesh->GetParallelTopology().GetDistantEdgeNums(locnum);
return std::tuple<int,int*>(dn.Size(), &dn[0]);
}
case 2:
{
FlatArray<int> dn = mesh->GetParallelTopology().GetDistantFaceNums(locnum);
return std::tuple<int,int*>(dn.Size(), &dn[0]);
}
default:
return std::tuple<int,int*>(0,nullptr);
}
}
#endif
}
int link_it_nginterface_v2;
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