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70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
#ifndef NETGEN_GEOMSEARCH_HPP
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#define NETGEN_GEOMSEARCH_HPP
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/**************************************************************************/
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/* File: geomsearch.hh */
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/* Author: Johannes Gerstmayr */
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/* Date: 19. Nov. 97 */
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/**************************************************************************/
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#include "meshtype.hpp"
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namespace netgen
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{
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class FrontPoint3;
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class FrontFace;
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class MiniElement2d;
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/// class for quick access of 3D-elements; class cannot delete elements, but only append
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class GeomSearch3d
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{
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public:
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///
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GeomSearch3d();
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///
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virtual ~GeomSearch3d();
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///
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void Init (Array <FrontPoint3,PointIndex> *pointsi, NgArray <FrontFace> *facesi);
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///get elements max extension
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void ElemMaxExt(Point3d& minp, Point3d& maxp, const MiniElement2d& elem);
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///get minimum coordinates of two points ->p2
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void MinCoords(const Point3d& p1, Point3d& p2);
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///get minimum coordinates of two points ->p2
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void MaxCoords(const Point3d& p1, Point3d& p2);
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///create a hashtable from an existing array of triangles
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///sizei = number of pieces in one direction
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void Create();
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///add new element to Hashtable
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void AddElem(const MiniElement2d& elem, INDEX elemnum);
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///GetLocal faces in sphere with radius xh and middlepoint p
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void GetLocals(NgArray<MiniElement2d> & locfaces, NgArray<INDEX> & findex,
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INDEX fstind, const Point3d& p0, double xh);
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private:
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NgArray <FrontFace> *faces; // Pointers to Arrays in Adfront
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Array <FrontPoint3,PointIndex> *points;
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NgArray <NgArray <int>*> hashtable;
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Point3d minext; //extension of Hashdomain
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Point3d maxext;
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Point3d maxextreal;
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Vec3d elemsize; //size of one Hash-Element
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threeint size; // size of Hashtable in each direction
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int reset;
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int hashcount;
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};
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} // namespace netgen
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#endif // NETGEN_GEOMSEARCH_HPP
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