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https://github.com/NGSolve/netgen.git
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795 lines
15 KiB
C++
795 lines
15 KiB
C++
#ifndef FILE_ADTREE
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#define FILE_ADTREE
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/* *************************************************************************/
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/* File: adtree.hh */
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/* Author: Joachim Schoeberl */
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/* Date: 16. Feb. 98 */
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/* Redesigned by Wolfram Muehlhuber, May 1998 */
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/* *************************************************************************/
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namespace netgen
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{
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/**
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Alternating Digital Tree
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*/
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// #include "../include/mystdlib.h"
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// #include "../include/myadt.hpp"
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class ADTreeNode
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{
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public:
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ADTreeNode *left, *right, *father;
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int dim;
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float sep;
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float *data;
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float *boxmin;
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float *boxmax;
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int pi;
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int nchilds;
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ADTreeNode (int adim);
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~ADTreeNode ();
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friend class ADTree;
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};
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class ADTreeCriterion
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{
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public:
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ADTreeCriterion() { }
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virtual int Eval (const ADTreeNode * node) const = 0;
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};
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class ADTree
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{
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int dim;
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ADTreeNode * root;
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float *cmin, *cmax;
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NgArray<ADTreeNode*> ela;
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const ADTreeCriterion * criterion;
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NgArray<ADTreeNode*> stack;
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NgArray<int> stackdir;
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int stackindex;
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public:
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ADTree (int adim, const float * acmin,
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const float * acmax);
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~ADTree ();
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void Insert (const float * p, int pi);
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// void GetIntersecting (const float * bmin, const float * bmax,
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// NgArray<int> & pis) const;
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void SetCriterion (ADTreeCriterion & acriterion);
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void Reset ();
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int Next ();
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void GetMatch (NgArray<int> & matches);
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode * node) const;
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};
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class ADTreeNode3
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{
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public:
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ADTreeNode3 *left, *right, *father;
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float sep;
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float data[3];
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int pi;
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int nchilds;
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ADTreeNode3 ();
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void DeleteChilds ();
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friend class ADTree3;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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class ADTree3
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{
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ADTreeNode3 * root;
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float cmin[3], cmax[3];
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NgArray<ADTreeNode3*> ela;
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public:
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ADTree3 (const float * acmin,
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const float * acmax);
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~ADTree3 ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode3 * node) const;
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};
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/*
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// divide each direction
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#define ADTN_DIV 10
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class ADTreeNode3Div
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{
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public:
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ADTreeNode3Div *father;
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ADTreeNode3Div *childs[ADTN_DIV];
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float minx, dist;
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float data[3];
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int pi;
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int nchilds;
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ADTreeNode3Div ();
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void DeleteChilds ();
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friend class ADTree3Div;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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class ADTree3Div
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{
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ADTreeNode3Div * root;
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float cmin[3], cmax[3];
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NgArray<ADTreeNode3Div*> ela;
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public:
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ADTree3Div (const float * acmin,
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const float * acmax);
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~ADTree3Div ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode3Div * node) const;
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};
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#define ADTN_SIZE 10
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// multiple entries
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class ADTreeNode3M
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{
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public:
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ADTreeNode3M *left, *right, *father;
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float sep;
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float data[ADTN_SIZE][3];
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int pi[ADTN_SIZE];
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int nchilds;
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ADTreeNode3M ();
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void DeleteChilds ();
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friend class ADTree3M;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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class ADTree3M
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{
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ADTreeNode3M * root;
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float cmin[3], cmax[3];
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NgArray<ADTreeNode3M*> ela;
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public:
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ADTree3M (const float * acmin,
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const float * acmax);
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~ADTree3M ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode3M * node) const;
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};
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class ADTreeNode3F
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{
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public:
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ADTreeNode3F *father;
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ADTreeNode3F *childs[8];
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float sep[3];
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float data[3];
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int pi;
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int nchilds;
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ADTreeNode3F ();
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void DeleteChilds ();
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friend class ADTree3F;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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// fat tree
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class ADTree3F
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{
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ADTreeNode3F * root;
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float cmin[3], cmax[3];
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NgArray<ADTreeNode3F*> ela;
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public:
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ADTree3F (const float * acmin,
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const float * acmax);
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~ADTree3F ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode3F * node) const;
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};
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class ADTreeNode3FM
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{
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public:
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ADTreeNode3FM *father;
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ADTreeNode3FM *childs[8];
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float sep[3];
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float data[ADTN_SIZE][3];
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int pi[ADTN_SIZE];
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int nchilds;
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ADTreeNode3FM ();
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void DeleteChilds ();
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friend class ADTree3FM;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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// fat tree
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class ADTree3FM
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{
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ADTreeNode3FM * root;
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float cmin[3], cmax[3];
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NgArray<ADTreeNode3FM*> ela;
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public:
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ADTree3FM (const float * acmin,
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const float * acmax);
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~ADTree3FM ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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void PrintRec (ostream & ost, const ADTreeNode3FM * node) const;
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};
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*/
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class ADTreeNode6
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{
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public:
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ADTreeNode6 *left, *right, *father;
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float sep;
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float data[6];
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int pi;
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int nchilds;
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ADTreeNode6 ();
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void DeleteChilds ();
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friend class ADTree6;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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class ADTree6
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{
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ADTreeNode6 * root;
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float cmin[6], cmax[6];
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NgArray<ADTreeNode6*> ela;
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public:
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ADTree6 (const float * acmin,
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const float * acmax);
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~ADTree6 ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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int Depth () const
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{ return DepthRec (root); }
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int Elements () const
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{ return ElementsRec (root); }
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void PrintRec (ostream & ost, const ADTreeNode6 * node) const;
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int DepthRec (const ADTreeNode6 * node) const;
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int ElementsRec (const ADTreeNode6 * node) const;
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void PrintMemInfo (ostream & ost) const;
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};
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template <int DIM, typename T>
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class T_ADTreeNode
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{
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public:
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T_ADTreeNode *left, *right, *father;
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float sep;
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// float data[DIM];
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Point<DIM,float> data;
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T pi;
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int nchilds;
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T_ADTreeNode ()
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{
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// pi = -1;
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SetInvalid(pi);
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left = NULL;
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right = NULL;
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father = NULL;
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nchilds = 0;
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}
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void DeleteChilds (BlockAllocator & ball)
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{
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if (left)
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{
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left->DeleteChilds(ball);
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ball.Free(left);
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left = NULL;
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}
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if (right)
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{
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right->DeleteChilds(ball);
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ball.Free(right);
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right = NULL;
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}
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}
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};
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template <int dim, typename T = INDEX>
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class T_ADTree
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{
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T_ADTreeNode<dim,T> * root;
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// float cmin[dim], cmax[dim];
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Point<dim> cmin, cmax;
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// NgArray<T_ADTreeNode<dim>*> ela;
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ClosedHashTable<T, T_ADTreeNode<dim,T>*> ela;
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BlockAllocator ball{sizeof(T_ADTreeNode<dim,T>)};
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public:
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T_ADTree (Point<dim> acmin, Point<dim> acmax)
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{
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cmin = acmin;
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cmax = acmax;
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root = new (ball.Alloc()) T_ADTreeNode<dim,T>;
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root->sep = (cmin[0] + cmax[0]) / 2;
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}
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~T_ADTree ()
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{
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root->DeleteChilds(ball);
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ball.Free(root);
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}
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void Insert (Point<dim> p, T pi)
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{
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T_ADTreeNode<dim,T> *node(NULL);
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T_ADTreeNode<dim,T> *next;
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int dir;
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int lr(0);
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Point<dim> bmin = cmin;
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Point<dim> bmax = cmax;
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next = root;
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dir = 0;
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while (next)
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{
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node = next;
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if (IsInvalid(node->pi))
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{
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// memcpy (node->data, p, dim * sizeof(float));
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node->data = p;
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node->pi = pi;
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// if (ela.Size() < pi+1)
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// ela.SetSize (pi+1);
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ela[pi] = node;
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return;
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}
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if (node->sep > p[dir])
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{
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next = node->left;
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bmax(dir) = node->sep;
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lr = 0;
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}
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else
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{
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next = node->right;
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bmin(dir) = node->sep;
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lr = 1;
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}
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dir++;
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if (dir == dim) dir = 0;
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}
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next = new (ball.Alloc()) T_ADTreeNode<dim,T>;
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next->data = p;
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next->pi = pi;
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next->sep = (bmin[dir] + bmax[dir]) / 2;
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// if (ela.Size() < pi+1)
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// ela.SetSize (pi+1);
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ela[pi] = next;
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if (lr)
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node->right = next;
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else
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node->left = next;
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next -> father = node;
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while (node)
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{
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node->nchilds++;
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node = node->father;
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}
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}
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class inttn {
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public:
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int dir;
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T_ADTreeNode<dim,T> * node;
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};
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void GetIntersecting (Point<dim> bmin, Point<dim> bmax,
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NgArray<T> & pis) const
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{
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NgArrayMem<inttn,10000> stack(10000);
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pis.SetSize(0);
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stack[0].node = root;
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stack[0].dir = 0;
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int stacks = 0;
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while (stacks >= 0)
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{
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T_ADTreeNode<dim,T> * node = stack[stacks].node;
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int dir = stack[stacks].dir;
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stacks--;
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if (!IsInvalid(node->pi)) // != -1)
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{
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bool found = true;
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for (int i = 0; i < dim/2; i++)
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if (node->data[i] > bmax[i])
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found = false;
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for (int i = dim/2; i < dim; i++)
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if (node->data[i] < bmin[i])
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found = false;
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if (found)
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pis.Append (node->pi);
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/*
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if (node->data[0] > bmax[0] ||
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node->data[1] > bmax[1] ||
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node->data[2] > bmax[2] ||
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node->data[3] < bmin[3] ||
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node->data[4] < bmin[4] ||
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node->data[5] < bmin[5])
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;
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else
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{
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pis.Append (node->pi);
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}
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*/
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}
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int ndir = (dir+1) % dim;
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if (node->left && bmin[dir] <= node->sep)
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{
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stacks++;
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stack[stacks].node = node->left;
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stack[stacks].dir = ndir;
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}
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if (node->right && bmax[dir] >= node->sep)
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{
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stacks++;
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stack[stacks].node = node->right;
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stack[stacks].dir = ndir;
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}
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}
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}
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void DeleteElement (T pi)
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{
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T_ADTreeNode<dim,T> * node = ela[pi];
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ela.Delete(pi);
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SetInvalid(node->pi); // = -1;
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node = node->father;
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while (node)
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{
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node->nchilds--;
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node = node->father;
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}
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}
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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int Depth () const
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{ return DepthRec (root); }
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int Elements () const
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{ return ElementsRec (root); }
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void PrintRec (ostream & ost, const T_ADTreeNode<dim,T> * node) const;
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int DepthRec (const T_ADTreeNode<dim,T> * node) const;
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int ElementsRec (const T_ADTreeNode<dim,T> * node) const;
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void PrintMemInfo (ostream & ost) const
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{
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ost << Elements() << " elements a " << sizeof(ADTreeNode6)
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<< " Bytes = "
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<< Elements() * sizeof(T_ADTreeNode<dim,T>) << endl;
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ost << "maxind = " << ela.Size() << " = " << sizeof(T_ADTreeNode<dim,T>*) * ela.Size() << " Bytes" << endl;
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}
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};
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/*
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|
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class ADTreeNode6F
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{
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public:
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ADTreeNode6F * father;
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ADTreeNode6F * childs[64];
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float sep[6];
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float data[6];
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int pi;
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int nchilds;
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ADTreeNode6F ();
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void DeleteChilds ();
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friend class ADTree6F;
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static BlockAllocator ball;
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void * operator new(size_t);
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void operator delete (void *);
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};
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|
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class ADTree6F
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{
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ADTreeNode6F * root;
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float cmin[6], cmax[6];
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NgArray<ADTreeNode6F*> ela;
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public:
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ADTree6F (const float * acmin,
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const float * acmax);
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~ADTree6F ();
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void Insert (const float * p, int pi);
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void GetIntersecting (const float * bmin, const float * bmax,
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NgArray<int> & pis) const;
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void DeleteElement (int pi);
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|
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void Print (ostream & ost) const
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{ PrintRec (ost, root); }
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int Depth () const
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{ return DepthRec (root); }
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|
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void PrintRec (ostream & ost, const ADTreeNode6F * node) const;
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int DepthRec (const ADTreeNode6F * node) const;
|
|
};
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|
|
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|
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*/
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|
|
|
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|
|
|
|
|
|
|
class Point3dTree
|
|
{
|
|
ADTree3 * tree;
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|
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|
public:
|
|
DLL_HEADER Point3dTree (const Point<3> & pmin, const Point<3> & pmax);
|
|
DLL_HEADER ~Point3dTree ();
|
|
DLL_HEADER void Insert (const Point<3> & p, int pi);
|
|
void DeleteElement (int pi)
|
|
{ tree->DeleteElement(pi); }
|
|
DLL_HEADER void GetIntersecting (const Point<3> & pmin, const Point<3> & pmax,
|
|
NgArray<int> & pis) const;
|
|
const ADTree3 & Tree() const { return *tree; };
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|
};
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|
|
|
|
|
template <int dim, typename T = INDEX>
|
|
class BoxTree
|
|
{
|
|
T_ADTree<2*dim,T> * tree;
|
|
Point<dim> boxpmin, boxpmax;
|
|
public:
|
|
BoxTree (const Box<dim> & abox)
|
|
{
|
|
boxpmin = abox.PMin();
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|
boxpmax = abox.PMax();
|
|
Point<2*dim> tpmin, tpmax;
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|
for (int i = 0; i < dim; i++)
|
|
{
|
|
tpmin(i) = tpmin(i+dim) = boxpmin(i);
|
|
tpmax(i) = tpmax(i+dim) = boxpmax(i);
|
|
}
|
|
tree = new T_ADTree<2*dim,T> (tpmin, tpmax);
|
|
}
|
|
|
|
BoxTree (const Point<dim> & apmin, const Point<dim> & apmax)
|
|
{
|
|
boxpmin = apmin;
|
|
boxpmax = apmax;
|
|
Point<2*dim> tpmin, tpmax;
|
|
for (int i = 0; i < dim; i++)
|
|
{
|
|
tpmin(i) = tpmin(i+dim) = boxpmin(i);
|
|
tpmax(i) = tpmax(i+dim) = boxpmax(i);
|
|
}
|
|
tree = new T_ADTree<2*dim,T> (tpmin, tpmax);
|
|
}
|
|
|
|
~BoxTree ()
|
|
{
|
|
delete tree;
|
|
}
|
|
|
|
void Insert (const Point<dim> & bmin, const Point<dim> & bmax, T pi)
|
|
{
|
|
Point<2*dim> tp;
|
|
|
|
for (size_t i = 0; i < dim; i++)
|
|
{
|
|
tp(i) = bmin(i);
|
|
tp(i+dim) = bmax(i);
|
|
}
|
|
|
|
tree->Insert (tp, pi);
|
|
}
|
|
|
|
void Insert (const Box<dim> & box, T pi)
|
|
{
|
|
Insert (box.PMin(), box.PMax(), pi);
|
|
}
|
|
|
|
void DeleteElement (T pi)
|
|
{
|
|
tree->DeleteElement(pi);
|
|
}
|
|
|
|
void GetIntersecting (const Point<dim> & pmin, const Point<dim> & pmax,
|
|
NgArray<T> & pis) const
|
|
{
|
|
Point<2*dim> tpmin, tpmax;
|
|
double tol = Tolerance();
|
|
for (size_t i = 0; i < dim; i++)
|
|
{
|
|
tpmin(i) = boxpmin(i);
|
|
tpmax(i) = pmax(i)+tol;
|
|
|
|
tpmin(i+dim) = pmin(i)-tol;
|
|
tpmax(i+dim) = boxpmax(i);
|
|
}
|
|
|
|
tree->GetIntersecting (tpmin, tpmax, pis);
|
|
}
|
|
|
|
|
|
double Tolerance() const { return 1e-7 * Dist(boxpmax, boxpmin); } // single precision
|
|
const auto & Tree() const { return *tree; };
|
|
auto & Tree() { return *tree; };
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|