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