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Merge branch 'fix_extrusion' into 'master'

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Fix extrusion

See merge request jschoeberl/netgen!379
This commit is contained in:
Christopher Lackner 2021-04-15 21:03:14 +00:00
commit bd674942a5
8 changed files with 186 additions and 39 deletions
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11
libsrc/csg/csgeom.cpp
View File

@ -176,9 +176,8 @@ namespace netgen
solids.DeleteAll ();
for (int i = 0; i < splinecurves2d.Size(); i++)
delete splinecurves2d[i];
splinecurves2d.DeleteAll();
splinecurves3d.DeleteAll();
/*
for (int i = 0; i < surfaces.Size(); i++)
@ -712,24 +711,24 @@ namespace netgen
void CSGeometry :: SetSplineCurve (const char * name, SplineGeometry<2> * spl)
void CSGeometry :: SetSplineCurve (const char * name, shared_ptr<SplineGeometry<2>> spl)
{
splinecurves2d.Set(name,spl);
}
void CSGeometry :: SetSplineCurve (const char * name, SplineGeometry<3> * spl)
void CSGeometry :: SetSplineCurve (const char * name, shared_ptr<SplineGeometry<3>> spl)
{
splinecurves3d.Set(name,spl);
}
const SplineGeometry<2> * CSGeometry :: GetSplineCurve2d (const string & name) const
shared_ptr<SplineGeometry<2>> CSGeometry :: GetSplineCurve2d (const string & name) const
{
if (splinecurves2d.Used(name))
return splinecurves2d[name];
else
return NULL;
}
const SplineGeometry<3> * CSGeometry :: GetSplineCurve3d (const string & name) const
shared_ptr<SplineGeometry<3>> CSGeometry :: GetSplineCurve3d (const string & name) const
{
if (splinecurves3d.Used(name))
return splinecurves3d[name];

12
libsrc/csg/csgeom.hpp
View File

@ -115,9 +115,9 @@ namespace netgen
SymbolTable<Solid*> solids;
/// all 2d splinecurves
SymbolTable< SplineGeometry<2>* > splinecurves2d;
SymbolTable<shared_ptr<SplineGeometry<2>>> splinecurves2d;
/// all 3d splinecurves
SymbolTable< SplineGeometry<3>* > splinecurves3d;
SymbolTable<shared_ptr<SplineGeometry<3>>> splinecurves3d;
/// all top level objects: solids and surfaces
NgArray<TopLevelObject*> toplevelobjects;
@ -232,10 +232,10 @@ namespace netgen
const SymbolTable<Solid*> & GetSolids () const { return solids; }
void SetSplineCurve (const char * name, SplineGeometry<2> * spl);
void SetSplineCurve (const char * name, SplineGeometry<3> * spl);
const SplineGeometry<2> * GetSplineCurve2d (const string & name) const;
const SplineGeometry<3> * GetSplineCurve3d (const string & name) const;
void SetSplineCurve (const char * name, shared_ptr<SplineGeometry<2>> spl);
void SetSplineCurve (const char * name, shared_ptr<SplineGeometry<3>> spl);
shared_ptr<SplineGeometry<2>> GetSplineCurve2d (const string & name) const;
shared_ptr<SplineGeometry<3>> GetSplineCurve3d (const string & name) const;
void DoArchive(Archive& archive) override;

8
libsrc/csg/csgparser.cpp
View File

@ -511,8 +511,8 @@ namespace netgen
break;
}
Primitive * nprim = new Extrusion(*(geom->GetSplineCurve3d(epath)),
*(geom->GetSplineCurve2d(profile)),
Primitive * nprim = new Extrusion(geom->GetSplineCurve3d(epath),
geom->GetSplineCurve2d(profile),
z_dir);
geom->AddSurfaces (nprim);
return new Solid(nprim);
@ -1186,7 +1186,7 @@ namespace netgen
ParseChar (scan, '=');
ParseChar (scan, '(');
SplineGeometry<2> * newspline = new SplineGeometry<2>;
auto newspline = make_shared<SplineGeometry<2>>();
// newspline->CSGLoad(scan);
LoadSpline (*newspline, scan);
@ -1212,7 +1212,7 @@ namespace netgen
ParseChar (scan, '=');
ParseChar (scan, '(');
SplineGeometry<3> * newspline = new SplineGeometry<3>;
auto newspline = make_shared<SplineGeometry<3>>();
// newspline->CSGLoad(scan);
LoadSpline (*newspline, scan);

39
libsrc/csg/extrusion.cpp
View File

@ -42,6 +42,18 @@ namespace netgen
}
}
double cum_angle = 0.;
for(auto i : Range(path->GetSplines()))
{
const auto& sp = path->GetSpline(i);
auto t1 = sp.GetTangent(0.);
t1.Normalize();
auto t2 = sp.GetTangent(1.);
t2.Normalize();
cum_angle += acos(t1 * t2);
angles.Append(cum_angle);
}
profile->GetCoeff(profile_spline_coeff);
latest_point3d = -1.111e30;
}
@ -657,19 +669,34 @@ namespace netgen
dez -= (dez * ez) * ez;
}
void ExtrusionFace :: DefineTangentialPlane(const Point<3>& ap1,
const Point<3>& ap2)
{
Surface::DefineTangentialPlane(ap1, ap2);
tangential_plane_seg = latest_seg;
}
Extrusion :: Extrusion(const SplineGeometry<3> & path_in,
const SplineGeometry<2> & profile_in,
void ExtrusionFace :: ToPlane(const Point<3>& p3d, Point<2>& p2d,
double h, int& zone) const
{
Surface::ToPlane(p3d, p2d, h, zone);
double angle = angles[tangential_plane_seg] - angles[latest_seg];
if(fabs(angle) > 3.14/2.)
zone = -1;
}
Extrusion :: Extrusion(shared_ptr<SplineGeometry<3>> path_in,
shared_ptr<SplineGeometry<2>> profile_in,
const Vec<3> & z_dir) :
path(&path_in), profile(&profile_in), z_direction(z_dir)
path(path_in), profile(profile_in), z_direction(z_dir)
{
surfaceactive.SetSize(0);
surfaceids.SetSize(0);
for(int j=0; j<profile->GetNSplines(); j++)
{
ExtrusionFace * face = new ExtrusionFace(&((*profile).GetSpline(j)),
path,
ExtrusionFace * face = new ExtrusionFace(&(profile->GetSpline(j)),
path.get(),
z_direction);
faces.Append(face);
surfaceactive.Append(true);
@ -856,7 +883,7 @@ namespace netgen
return retval;
if(latestfacenum >= 0)
return faces[latestfacenum]->VecInFace(p,v2,0);
return faces[latestfacenum]->VecInFace(p,v2,eps);
else
return VecInSolid(p,v2,eps);
}

15
libsrc/csg/extrusion.hpp
View File

@ -12,8 +12,10 @@ namespace netgen
const SplineSeg<2> * profile;
const SplineGeometry<3> * path;
Vec<3> glob_z_direction;
Array<double> angles;
bool deletable;
int tangential_plane_seg;
NgArray< const SplineSeg3<3> * > spline3_path;
NgArray< const LineSeg<3> * > line_path;
@ -114,6 +116,11 @@ namespace netgen
Vec<3> & ex, Vec<3> & ey, Vec<3> & ez,
Vec<3> & dex, Vec<3> & dey, Vec<3> & dez) const;
void DefineTangentialPlane(const Point<3>& ap1,
const Point<3>& ap2) override;
void ToPlane(const Point<3>& p3d, Point<2>& p2d,
double h, int& zone) const override;
};
@ -121,8 +128,8 @@ namespace netgen
class Extrusion : public Primitive
{
private:
const SplineGeometry<3>* path;
const SplineGeometry<2>* profile; // closed, clockwise oriented curve
shared_ptr<SplineGeometry<3>> path;
shared_ptr<SplineGeometry<2>> profile; // closed, clockwise oriented curve
Vec<3> z_direction;
@ -131,8 +138,8 @@ namespace netgen
mutable int latestfacenum;
public:
Extrusion(const SplineGeometry<3> & path_in,
const SplineGeometry<2> & profile_in,
Extrusion(shared_ptr<SplineGeometry<3>> path_in,
shared_ptr<SplineGeometry<2>> profile_in,
const Vec<3> & z_dir);
// default constructor for archive
Extrusion() {}

30
libsrc/csg/python_csg.cpp
View File

@ -170,7 +170,8 @@ namespace netgen
DLL_HEADER void ExportCSG(py::module &m)
{
py::class_<SplineGeometry<2>> (m, "SplineCurve2d")
py::class_<SplineGeometry<2>, shared_ptr<SplineGeometry<2>>>
(m, "SplineCurve2d")
.def(py::init<>())
.def ("AddPoint", FunctionPointer
([] (SplineGeometry<2> & self, double x, double y)
@ -329,14 +330,31 @@ DLL_HEADER void ExportCSG(py::module &m)
Solid * sol = new Solid(rev);
return make_shared<SPSolid> (sol);
}));
m.def ("Extrusion", FunctionPointer([](const SplineGeometry<3> & path,
const SplineGeometry<2> & profile,
Vec<3> n)
m.def ("Extrusion", [](shared_ptr<SplineGeometry<3>> path,
shared_ptr<SplineGeometry<2>> profile,
Vec<3> d)
{
Extrusion * extr = new Extrusion (path,profile,n);
Extrusion * extr = new Extrusion (path,profile,d);
Solid * sol = new Solid(extr);
return make_shared<SPSolid> (sol);
}));
}, py::arg("path"), py::arg("profile"), py::arg("d"),
R"delimiter(A body of extrusion is defined by its profile
(which has to be a closed, clockwiseoriented 2D curve),
by a path (a 3D curve) and a vector d. It is constructed
as follows: Take a point p on the path and denote the
(unit-)tangent of the path in this point by t. If we cut
the body by the plane given by p and t as normal vector,
the cut is the profile. The profile is oriented by the
(local) y-direction `y:=d−(d·t)t` and the (local) x-direction
`x:=t \times y`.
The following points have to be noticed:
* If the path is not closed, then also the body is NOT closed.
In this case e.g. planes or orthobricks have to be used to
construct a closed body.
* The path has to be smooth, i.e. the tangents at the end- resp.
start-point of two consecutive spline or line patches have to
have the same directions.
)delimiter");
m.def("EllipticCone", [](const Point<3>& a, const Vec<3>& v, const Vec<3>& w,
double h, double r)
{

92
tests/pytest/results.json
View File

@ -1272,6 +1272,98 @@
"total_badness": 65897.969985
}
],
"extrusion.geo": [
{
"angles_tet": [
6.6841,
171.53
],
"angles_trig": [
11.293,
152.07
],
"ne1d": 172,
"ne2d": 286,
"ne3d": 241,
"quality_histogram": "[0, 0, 7, 56, 39, 22, 0, 0, 0, 0, 2, 0, 5, 18, 18, 29, 21, 10, 9, 5]",
"total_badness": 775.80779693
},
{
"angles_tet": [
16.097,
160.17
],
"angles_trig": [
15.327,
149.09
],
"ne1d": 104,
"ne2d": 152,
"ne3d": 124,
"quality_histogram": "[0, 0, 0, 0, 10, 19, 39, 26, 9, 3, 1, 1, 5, 1, 3, 2, 3, 2, 0, 0]",
"total_badness": 353.53219387
},
{
"angles_tet": [
11.505,
165.94
],
"angles_trig": [
15.054,
147.98
],
"ne1d": 134,
"ne2d": 196,
"ne3d": 167,
"quality_histogram": "[0, 0, 0, 1, 3, 35, 33, 8, 5, 21, 11, 9, 10, 11, 7, 3, 5, 3, 1, 1]",
"total_badness": 417.63980201
},
{
"angles_tet": [
6.6841,
171.53
],
"angles_trig": [
11.293,
152.07
],
"ne1d": 172,
"ne2d": 286,
"ne3d": 241,
"quality_histogram": "[0, 0, 7, 56, 39, 22, 0, 0, 0, 0, 2, 0, 5, 18, 18, 29, 21, 10, 9, 5]",
"total_badness": 775.80779693
},
{
"angles_tet": [
17.691,
140.88
],
"angles_trig": [
18.812,
116.06
],
"ne1d": 276,
"ne2d": 570,
"ne3d": 646,
"quality_histogram": "[0, 0, 0, 0, 0, 0, 4, 17, 30, 51, 51, 55, 81, 69, 74, 73, 72, 52, 12, 5]",
"total_badness": 1020.0235117
},
{
"angles_tet": [
14.402,
155.5
],
"angles_trig": [
24.071,
119.03
],
"ne1d": 442,
"ne2d": 1220,
"ne3d": 2802,
"quality_histogram": "[0, 0, 0, 0, 0, 2, 5, 2, 4, 12, 25, 55, 147, 298, 311, 503, 457, 536, 342, 103]",
"total_badness": 3603.431162
}
],
"fichera.geo": [
{
"angles_tet": [

8
tests/pytest/test_tutorials.py
View File

@ -63,12 +63,12 @@ def getMeshingparameters(filename):
standard = [MeshingParameters()] + [MeshingParameters(ms) for ms in (meshsize.very_coarse, meshsize.coarse, meshsize.moderate, meshsize.fine, meshsize.very_fine)]
if filename == "shell.geo":
return [] # do not test this example cause it needs so long...
if filename == "extrusion.geo":
return [] # this segfaults right now
if filename == "manyholes2.geo":
return [standard[1]] # this gets too big for finer meshsizes
if filename in ("manyholes.geo", "frame.step"):
return standard[:3] # this gets too big for finer meshsizes
if filename == "extrusion.geo":
return standard[:-1]
if filename == "screw.step":
return standard[3:] # coarser meshes don't work here
if filename == "cylsphere.geo":
@ -142,7 +142,11 @@ def generateResultFile():
continue
meshdata = []
for mp in mps:
try:
mesh = generateMesh(_file, mp)
except Exception as e:
print("Meshingparameters: ", mp)
raise e
meshdata.append( getData(mesh, mp) )
data[_file] = meshdata
print("needed", time.time() - start, "seconds")