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implement meshing2 functionality for 3d geometries

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This commit is contained in:
Christopher Lackner 2019-10-28 13:44:51 +01:00
parent 8f779b815a
commit 5b45c7a972
10 changed files with 60 additions and 42 deletions
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2
libsrc/csg/genmesh.cpp
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@ -422,7 +422,7 @@ namespace netgen
geom.GetSurface((mesh.GetFaceDescriptor(k).SurfNr())); geom.GetSurface((mesh.GetFaceDescriptor(k).SurfNr()));
Meshing2Surfaces meshing(*surf, mparam, geom.BoundingBox()); Meshing2Surfaces meshing(geom, *surf, mparam, geom.BoundingBox());
meshing.SetStartTime (starttime); meshing.SetStartTime (starttime);
double eps = 1e-8 * geom.MaxSize(); double eps = 1e-8 * geom.MaxSize();

5
libsrc/csg/meshsurf.cpp
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@ -14,10 +14,11 @@ Meshing2Surfaces :: Meshing2Surfaces (const Surface & asurface)
; ;
} }
*/ */
Meshing2Surfaces :: Meshing2Surfaces (const Surface & asurf, Meshing2Surfaces :: Meshing2Surfaces (const CSGeometry& geo,
const Surface & asurf,
const MeshingParameters & mp, const MeshingParameters & mp,
const Box<3> & abb) const Box<3> & abb)
: Meshing2(mp, abb), surface(asurf), mparam (mp) : Meshing2(geo, mp, abb), surface(asurf), mparam (mp)
{ {
; ;
} }

4
libsrc/csg/meshsurf.hpp
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@ -16,7 +16,9 @@ namespace netgen
/// ///
// Meshing2Surfaces (const Surface & asurf); // Meshing2Surfaces (const Surface & asurf);
/// ///
Meshing2Surfaces (const Surface & asurf, const MeshingParameters & mp, Meshing2Surfaces (const CSGeometry& geo,
const Surface & asurf,
const MeshingParameters & mp,
const Box<3> & aboundingbox); const Box<3> & aboundingbox);
protected: protected:

2
libsrc/geom2d/genmesh2d.cpp
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@ -565,7 +565,7 @@ namespace netgen
mp.quad = hquad || geometry.GetDomainQuadMeshing (domnr); mp.quad = hquad || geometry.GetDomainQuadMeshing (domnr);
Meshing2 meshing (mp, Box<3> (pmin, pmax)); Meshing2 meshing (geometry, mp, Box<3> (pmin, pmax));
NgArray<int, PointIndex::BASE> compress(bnp); NgArray<int, PointIndex::BASE> compress(bnp);
compress = -1; compress = -1;

54
libsrc/meshing/meshing2.cpp
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@ -38,8 +38,10 @@ namespace netgen
static Array<unique_ptr<netrule>> global_quad_rules; static Array<unique_ptr<netrule>> global_quad_rules;
Meshing2 :: Meshing2 (const MeshingParameters & mp, const Box<3> & aboundingbox) Meshing2 :: Meshing2 (const NetgenGeometry& ageo,
: adfront(aboundingbox), boundingbox(aboundingbox) const MeshingParameters & mp,
const Box<3> & aboundingbox)
: geo(ageo), adfront(aboundingbox), boundingbox(aboundingbox)
{ {
static Timer t("Mesing2::Meshing2"); RegionTimer r(t); static Timer t("Mesing2::Meshing2"); RegionTimer r(t);
@ -133,28 +135,37 @@ namespace netgen
// static Vec3d ex, ey; // static Vec3d ex, ey;
// static Point3d globp1; // static Point3d globp1;
void Meshing2 :: DefineTransformation (const Point<3> & p1, const Point<3> & p2, void Meshing2 :: DefineTransformation (const Point<3> & ap1,
const PointGeomInfo * geominfo1, const Point<3> & ap2,
const PointGeomInfo * geominfo2) const PointGeomInfo * gi1,
const PointGeomInfo * gi2)
{ {
globp1 = p1; p1 = ap1;
ex = p2 - p1; p2 = ap2;
ex /= ex.Length(); auto n1 = geo.GetNormal(gi1->trignum, p1, *gi1);
ey.X() = -ex.Y(); auto n2 = geo.GetNormal(gi2->trignum, p2, *gi2);
ey.Y() = ex.X();
ey.Z() = 0; ez = 0.5 * (n1+n2);
ez.Normalize();
ex = (p2-p1).Normalize();
ez -= (ez*ex)*ex;
ez.Normalize();
ey = Cross(ez, ex);
} }
void Meshing2 :: TransformToPlain (const Point<3> & locpoint, void Meshing2 :: TransformToPlain (const Point<3> & locpoint,
const MultiPointGeomInfo & geominf, const MultiPointGeomInfo & geominfo,
Point<2> & plainpoint, double h, int & zone) Point<2> & plainpoint, double h, int & zone)
{ {
Vec3d p1p (globp1, locpoint); auto& gi = geominfo.GetPGI(1);
auto n = geo.GetNormal(gi.trignum, locpoint, gi);
auto p1p = locpoint - p1;
plainpoint(0) = (p1p * ex) / h;
plainpoint(1) = (p1p * ey) / h;
// p1p = locpoint - globp1; if(n*ez < 0)
p1p /= h; zone = -1;
plainpoint[0] = p1p * ex; else
plainpoint[1] = p1p * ey;
zone = 0; zone = 0;
} }
@ -163,12 +174,9 @@ namespace netgen
PointGeomInfo & gi, PointGeomInfo & gi,
double h) double h)
{ {
Vec3d p1p; locpoint = p1 + (h*plainpoint(0)) * ex + (h* plainpoint(1)) * ey;
gi.trignum = 1; if (!geo.ProjectPointGI(gi.trignum, locpoint, gi))
geo.ProjectPoint(gi.trignum, locpoint);
p1p = plainpoint[0] * ex + plainpoint[1] * ey;
p1p *= h;
locpoint = globp1 + p1p;
return 0; return 0;
} }

10
libsrc/meshing/meshing2.hpp
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@ -41,12 +41,16 @@ class Meshing2
/// ///
double maxarea; double maxarea;
Vec3d ex, ey; Vec3d ex, ey, ez;
Point3d globp1; Point<3> p1, p2;
const NetgenGeometry& geo;
public: public:
/// ///
DLL_HEADER Meshing2 (const MeshingParameters & mp, const Box<3> & aboundingbox); DLL_HEADER Meshing2 (const NetgenGeometry& geo,
const MeshingParameters & mp,
const Box<3> & aboundingbox);
/// ///
DLL_HEADER virtual ~Meshing2 (); DLL_HEADER virtual ~Meshing2 ();

2
libsrc/occ/occgenmesh.cpp
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@ -651,7 +651,7 @@ namespace netgen
static Timer tinit("init"); static Timer tinit("init");
tinit.Start(); tinit.Start();
Meshing2OCCSurfaces meshing(TopoDS::Face(geom.fmap(k)), bb, projecttype, mparam); Meshing2OCCSurfaces meshing(geom, TopoDS::Face(geom.fmap(k)), bb, projecttype, mparam);
tinit.Stop(); tinit.Stop();

6
libsrc/occ/occmeshsurf.cpp
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@ -492,10 +492,12 @@ namespace netgen
} }
Meshing2OCCSurfaces :: Meshing2OCCSurfaces (const TopoDS_Shape & asurf, Meshing2OCCSurfaces :: Meshing2OCCSurfaces (const NetgenGeometry& geo,
const TopoDS_Shape & asurf,
const Box<3> & abb, int aprojecttype, const Box<3> & abb, int aprojecttype,
const MeshingParameters & mparam) const MeshingParameters & mparam)
: Meshing2(mparam, Box<3>(abb.PMin(), abb.PMax())), surface(TopoDS::Face(asurf), aprojecttype) : Meshing2(geo, mparam, Box<3>(abb.PMin(), abb.PMax())),
surface(TopoDS::Face(asurf), aprojecttype)
{ {
; ;
} }

3
libsrc/occ/occmeshsurf.hpp
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@ -113,7 +113,8 @@ class Meshing2OCCSurfaces : public Meshing2
public: public:
/// ///
Meshing2OCCSurfaces (const TopoDS_Shape & asurf, const Box<3> & aboundingbox, Meshing2OCCSurfaces (const NetgenGeometry& geo,
const TopoDS_Shape & asurf, const Box<3> & aboundingbox,
int aprojecttype, const MeshingParameters & mparam); int aprojecttype, const MeshingParameters & mparam);
/// ///

2
libsrc/stlgeom/meshstlsurface.cpp
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@ -897,7 +897,7 @@ void STLSurfaceOptimization (STLGeometry & geom,
MeshingSTLSurface :: MeshingSTLSurface (STLGeometry & ageom, MeshingSTLSurface :: MeshingSTLSurface (STLGeometry & ageom,
const MeshingParameters & mp) const MeshingParameters & mp)
: Meshing2(mp, ageom.GetBoundingBox()), geom(ageom) : Meshing2(ageom, mp, ageom.GetBoundingBox()), geom(ageom)
{ {
; ;
} }