netgen/libsrc/occ/occmeshsurf.hpp
2019-10-07 15:17:03 +02:00

151 lines
3.3 KiB
C++

#ifdef OCCGEOMETRY
#ifndef FILE_OCCMESHSURF
#define FILE_OCCMESHSURF
#include "occgeom.hpp"
#include "mydefs.hpp"
#define PARAMETERSPACE -1
#define PLANESPACE 1
class OCCGeometry;
class SingularMatrixException
{};
class UVBoundsException
{};
class OCCSurface
{
public:
TopoDS_Face topods_face;
Handle(Geom_Surface) occface;
TopAbs_Orientation orient;
int projecttype;
protected:
Point<3> p1;
Point<3> p2;
/// in plane, directed p1->p2
Vec<3> ex;
/// in plane
Vec<3> ey;
/// outer normal direction
Vec<3> ez;
/// normal vector in p2
Vec<3> n2;
/// average normal vector
Vec<3> nmid;
// for transformation to parameter space
Point<2> psp1;
Point<2> psp2;
Vec<2> psex;
Vec<2> psey;
Mat<2,2> Amat, Amatinv;
// UV Bounds
double umin, umax, vmin, vmax;
public:
OCCSurface (const TopoDS_Face & aface, int aprojecttype)
{
static Timer t("occurface ctor"); RegionTimer r(t);
topods_face = aface;
occface = BRep_Tool::Surface(topods_face);
orient = topods_face.Orientation();
projecttype = aprojecttype;
ShapeAnalysis::GetFaceUVBounds (topods_face, umin, umax, vmin, vmax);
umin -= fabs(umax-umin)/100.0;
vmin -= fabs(vmax-vmin)/100.0;
umax += fabs(umax-umin)/100.0;
vmax += fabs(vmax-vmin)/100.0;
// projecttype = PLANESPACE;
/*
TopExp_Explorer exp1;
exp1.Init (topods_face, TopAbs_WIRE);
orient = TopAbs::Compose (orient, exp1.Current().Orientation());
*/
};
~OCCSurface()
{};
void Project (Point<3> & p, PointGeomInfo & gi);
void GetNormalVector (const Point<3> & p,
const PointGeomInfo & geominfo,
Vec<3> & n) const;
/**
Defines tangential plane in ap1.
The local x-coordinate axis point to the direction of ap2 */
void DefineTangentialPlane (const Point<3> & ap1,
const PointGeomInfo & geominfo1,
const Point<3> & ap2,
const PointGeomInfo & geominfo2);
/// Transforms 3d point p3d to local coordinates pplane
void ToPlane (const Point<3> & p3d, const PointGeomInfo & geominfo,
Point<2> & pplane, double h, int & zone) const;
/// Transforms point pplane in local coordinates to 3d point
void FromPlane (const Point<2> & pplane,
Point<3> & p3d,
PointGeomInfo & gi,
double h);
};
///
class Meshing2OCCSurfaces : public Meshing2
{
///
OCCSurface surface;
public:
///
Meshing2OCCSurfaces (const TopoDS_Shape & asurf, const Box<3> & aboundingbox,
int aprojecttype, const MeshingParameters & mparam);
///
int GetProjectionType ()
{ return surface.projecttype; }
protected:
///
void DefineTransformation (const Point<3> & p1, const Point<3> & p2,
const PointGeomInfo * geominfo1,
const PointGeomInfo * geominfo2) override;
///
void TransformToPlain (const Point<3> & locpoint,
const MultiPointGeomInfo & geominfo,
Point<2> & plainpoint,
double h, int & zone) override;
///
int TransformFromPlain (const Point<2> & plainpoint,
Point<3> & locpoint,
PointGeomInfo & gi,
double h) override;
///
double CalcLocalH (const Point<3> & p, double gh) const override;
};
class OCCGeometry;
#endif
#endif