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modify PointBetween for manually generated meshes

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This commit is contained in:
Christoph Wintersteiger 2018-04-18 09:34:41 +02:00
parent df71d00d21
commit ef80db781a
2 changed files with 46 additions and 5 deletions
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45
libsrc/geom2d/geom2dmesh.cpp
View File

@ -37,16 +37,53 @@ namespace netgen
Point<3> & newp, EdgePointGeomInfo & newgi) const
{
Point<2> p2d;
p2d = geometry.GetSplines().Get(ap1.edgenr) ->
GetPoint (((1-secpoint)*ap1.dist+secpoint*ap2.dist));
double newdist;
auto spline = geometry.GetSplines().Get(ap1.edgenr);
if( (ap1.dist == 0.0) && (ap2.dist == 0.0) )
{
// used for manually generated meshes
const SplineSeg3<2> * ss3;
const LineSeg<2> * ls;
auto ext = dynamic_cast<const SplineSegExt *>(spline);
if(ext)
{
ss3 = dynamic_cast<const SplineSeg3<2> *>(&ext->seg);
ls = dynamic_cast<const LineSeg<2> *>(&ext->seg);
}
else
{
ss3 = dynamic_cast<const SplineSeg3<2> *>(spline);
ls = dynamic_cast<const LineSeg<2> *>(spline);
}
Point<2> p12d(p1(0),p1(1)), p22d(p2(0),p2(1));
Point<2> p1_proj(0.0,0.0), p2_proj(0.0,0.0);
double t1_proj = 0.0;
double t2_proj = 0.0;
if(ss3)
{
ss3->Project(p12d,p1_proj,t1_proj);
ss3->Project(p22d,p2_proj,t2_proj);
}
else if(ls)
{
ls->Project(p12d,p1_proj,t1_proj);
ls->Project(p22d,p2_proj,t2_proj);
}
p2d = spline->GetPoint (((1-secpoint)*t1_proj+secpoint*t2_proj));
newdist = (1-secpoint)*t1_proj+secpoint*t2_proj;
}
else
{
p2d = spline->GetPoint (((1-secpoint)*ap1.dist+secpoint*ap2.dist));
newdist = (1-secpoint)*ap1.dist+secpoint*ap2.dist;
}
// (*testout) << "refine 2d line, ap1.dist, ap2.dist = " << ap1.dist << ", " << ap2.dist << endl;
// (*testout) << "p1, p2 = " << p1 << p2 << ", newp = " << p2d << endl;
newp = Point3d (p2d(0), p2d(1), 0);
newgi.edgenr = ap1.edgenr;
newgi.dist = ((1-secpoint)*ap1.dist+secpoint*ap2.dist);
newgi.dist = newdist;
};

6
libsrc/meshing/python_mesh.cpp
View File

@ -320,12 +320,15 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
;
py::class_<Segment>(m, "Element1D")
.def(py::init([](py::list vertices, py::list surfaces, int index)
.def(py::init([](py::list vertices, py::list surfaces, int index, int edgenr)
{
Segment * newel = new Segment();
for (int i = 0; i < 2; i++)
(*newel)[i] = py::extract<PointIndex>(vertices[i])();
newel -> si = index;
newel -> edgenr = edgenr;
newel -> epgeominfo[0].edgenr = edgenr;
newel -> epgeominfo[1].edgenr = edgenr;
// needed for codim2 in 3d
newel -> edgenr = index;
if (len(surfaces))
@ -338,6 +341,7 @@ DLL_HEADER void ExportNetgenMeshing(py::module &m)
py::arg("vertices"),
py::arg("surfaces")=py::list(),
py::arg("index")=1,
py::arg("edgenr")=1,
"create segment element"
)
.def("__repr__", &ToString<Segment>)