mirror of
https://github.com/NGSolve/netgen.git
synced 2024-11-12 00:59:16 +05:00
157 lines
3.5 KiB
C++
157 lines
3.5 KiB
C++
|
#ifndef FILE_MESHING2
|
||
|
|
#define FILE_MESHING2
|
||
|
|
|
||
|
|
/**************************************************************************/
|
||
|
|
/* File: meshing2.hpp */
|
||
|
|
/* Author: Joachim Schoeberl */
|
||
|
|
/* Date: 01. Okt. 95 */
|
||
|
|
/**************************************************************************/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
enum MESHING2_RESULT
|
||
|
|
{
|
||
|
|
MESHING2_OK = 0,
|
||
|
|
MESHING2_GIVEUP = 1,
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
|
||
|
|
The basis class for 2D mesh generation.
|
||
|
|
Has the method GenerateMesh
|
||
|
|
|
||
|
|
For surface mesh generation, or non-Euklidean meshing,
|
||
|
|
derive from Meshing2, and replace transformation.
|
||
|
|
|
||
|
|
*/
|
||
|
|
|
||
|
|
class Meshing2
|
||
|
|
{
|
||
|
|
/// the current advancing front
|
||
|
|
AdFront2 * adfront;
|
||
|
|
/// rules for mesh generation
|
||
|
|
ARRAY<netrule*> rules;
|
||
|
|
/// statistics
|
||
|
|
ARRAY<int> ruleused, canuse, foundmap;
|
||
|
|
///
|
||
|
|
Box<3> boundingbox;
|
||
|
|
///
|
||
|
|
double starttime;
|
||
|
|
///
|
||
|
|
double maxarea;
|
||
|
|
|
||
|
|
public:
|
||
|
|
///
|
||
|
|
Meshing2 (const Box<3> & aboundingbox);
|
||
|
|
|
||
|
|
///
|
||
|
|
virtual ~Meshing2 ();
|
||
|
|
|
||
|
|
/// Load rules, either from file, or compiled rules
|
||
|
|
void LoadRules (const char * filename);
|
||
|
|
|
||
|
|
///
|
||
|
|
MESHING2_RESULT GenerateMesh (Mesh & mesh, double gh, int facenr);
|
||
|
|
|
||
|
|
///
|
||
|
|
void AddPoint (const Point3d & p, PointIndex globind, MultiPointGeomInfo * mgi = NULL,
|
||
|
|
bool pointonsurface = true);
|
||
|
|
|
||
|
|
///
|
||
|
|
void AddBoundaryElement (INDEX i1, INDEX i2,
|
||
|
|
const PointGeomInfo & gi1, const PointGeomInfo & gi2);
|
||
|
|
|
||
|
|
///
|
||
|
|
void SetStartTime (double astarttime);
|
||
|
|
|
||
|
|
///
|
||
|
|
void SetMaxArea (double amaxarea);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
///
|
||
|
|
virtual void StartMesh ();
|
||
|
|
///
|
||
|
|
virtual void EndMesh ();
|
||
|
|
///
|
||
|
|
virtual double CalcLocalH (const Point3d & p, double gh) const;
|
||
|
|
|
||
|
|
///
|
||
|
|
virtual void DefineTransformation (const Point3d & p1, const Point3d & p2,
|
||
|
|
const PointGeomInfo * geominfo1,
|
||
|
|
const PointGeomInfo * geominfo2);
|
||
|
|
///
|
||
|
|
virtual void TransformToPlain (const Point3d & locpoint, const MultiPointGeomInfo & geominfo,
|
||
|
|
Point2d & plainpoint, double h, int & zone);
|
||
|
|
/// return 0 .. ok
|
||
|
|
/// return >0 .. cannot transform point to true surface
|
||
|
|
virtual int TransformFromPlain (Point2d & plainpoint,
|
||
|
|
Point3d & locpoint,
|
||
|
|
PointGeomInfo & geominfo,
|
||
|
|
double h);
|
||
|
|
|
||
|
|
/// projects to surface
|
||
|
|
/// return 0 .. ok
|
||
|
|
virtual int BelongsToActiveChart (const Point3d & p,
|
||
|
|
const PointGeomInfo & gi);
|
||
|
|
|
||
|
|
/// computes geoinfo data for line with respect to
|
||
|
|
/// selected chart
|
||
|
|
virtual int ComputePointGeomInfo (const Point3d & p,
|
||
|
|
PointGeomInfo & gi);
|
||
|
|
|
||
|
|
/// Tries to select unique geominfo on active chart
|
||
|
|
/// return 0: success
|
||
|
|
/// return 1: failed
|
||
|
|
virtual int ChooseChartPointGeomInfo (const MultiPointGeomInfo & mpgi,
|
||
|
|
PointGeomInfo & pgi);
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
tests, whether endpoint (= 1 or 2) of line segment p1-p2
|
||
|
|
is inside of the selected chart. The endpoint must be on the
|
||
|
|
chart
|
||
|
|
*/
|
||
|
|
virtual int IsLineVertexOnChart (const Point3d & p1, const Point3d & p2,
|
||
|
|
int endpoint, const PointGeomInfo & geominfo);
|
||
|
|
|
||
|
|
/*
|
||
|
|
get (projected) boundary of current chart
|
||
|
|
*/
|
||
|
|
virtual void GetChartBoundary (ARRAY<Point2d> & points,
|
||
|
|
ARRAY<Point3d> & points3d,
|
||
|
|
ARRAY<INDEX_2> & lines, double p) const;
|
||
|
|
|
||
|
|
virtual double Area () const;
|
||
|
|
|
||
|
|
|
||
|
|
/** Applies 2D rules.
|
||
|
|
Tests all 2D rules */
|
||
|
|
int ApplyRules (ARRAY<Point2d> & lpoints,
|
||
|
|
ARRAY<int> & legalpoints,
|
||
|
|
int maxlegalpoint,
|
||
|
|
ARRAY<INDEX_2> & llines,
|
||
|
|
int maxlegelline,
|
||
|
|
ARRAY<Element2d> & elements, ARRAY<INDEX> & dellines,
|
||
|
|
int tolerance);
|
||
|
|
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|