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233 lines
7.5 KiB
233 lines
7.5 KiB
/**
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* \file vertex.h
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*
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* \brief Definiert eine Klasse für einen Vertex und eine Klasse fü
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* einen Vertexliste
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*
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* Ein Vertex ist bei mir ein transformbares 4-Tupel, das sowohl einen Vektor
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* als auch eine Coordinate darstellen kann. Ich bezeichne beides als Vertex,
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* weil auch der Vektor einen Coordinate darstellen kann (falls man ihn als
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* Ursprungsvektor betrachtet)
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* Eine Vertexliste ist ein Container der Vertexe aufnehmen kann und
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* insbesondere zwei getrennte Sepicherbereiche zur aufnahme von Vertexen hat,
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* über die aber mit dem gleichen Zugriffsmechanismus zugegriffen wird.
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* Die wird gebraucht um leicht Vertexe für das clipping hinzufügen
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* zu können.
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*
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* \author Georg Steffers <georg@steffers.org> [gs]
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*
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* \date 16.12.2003
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*
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* \version ..2002 [gs]: erste Implementation
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* \version 16.12.2003 [gs]: <ul><li>
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* Beginn der Dokumentation mir Doxygen
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* </li><li>
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* Vertexlist zu einer zweiteiligen Liste gemacht,
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* damit Sie für clipping geeignet ist.
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* </li></ul>
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* \version 19.12.2003 [gs]: Vergleichsoperator hinzugefügt und
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* clip_2d_mask rausgeshmissen.
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*/
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/*
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* Copyright (C)2003 Georg Steffers
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __vertex_h__
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#define __vertex_h__
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#include "../math/Mmn.h"
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#include "../math/V_K4.h"
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#include "../helper/container.h"
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#define X 0
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#define Y 1
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#define Z 2
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#define W 3
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#define O_X 4
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#define O_Y 5
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#define O_Z 6
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#define O_W 7
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//! W=0 heißt der Vertex stellt einen Vektor dar.
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#define VEKTOR 0
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//! W=0 heißt der Vertex stellt einen Coordinate dar.
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#define COORD 1
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class vertex {
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private:
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V_K4<double> original;
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V_K4<double> transformed;
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int trans_stage;
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// char clip_mask_2d;
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public:
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vertex() : trans_stage(0) {}
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vertex(double x, double y, double z, double w=VEKTOR)
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: original(x,y,z,w), transformed(x,y,z,w),
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trans_stage(0) {}
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vertex(const vertex& v) : original(v.original),
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transformed(v.transformed),
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trans_stage(v.trans_stage) {}
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const vertex& operator=(const vertex& v);
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const double& operator[](unsigned xyzw) const {
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if(xyzw < X) { xyzw=X; }
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if(xyzw > O_W) { xyzw=O_W; }
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if(xyzw <= W)
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return transformed.a(xyzw, 0);
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else
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return original.a(xyzw-O_X, 0);
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}
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double& operator[](unsigned xyzw) {
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if(xyzw < X) { xyzw=X; }
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if(xyzw > O_W) { xyzw=O_W; }
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if(xyzw <= W)
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return transformed.a(xyzw, 0);
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else
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return original.a(xyzw-O_X, 0);
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}
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vertex operator*(const double&) const;
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friend vertex operator*(const double&, const vertex&);
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double operator% (const vertex&) const;
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vertex operator| (const vertex&) const;
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vertex operator+ (const vertex&) const;
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vertex operator- (const vertex&) const;
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bool operator== (const vertex& v) const {
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if(this->original == v.original &&
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this->transformed == v.transformed &&
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this->trans_stage == v.trans_stage)
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return true;
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return false;
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}
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vertex norm(void) const;
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double betr(void) const;
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void reset(void);
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void set_trans_stage(int p=0) { trans_stage=p; }
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unsigned get_trans_stage(void) const { return trans_stage; }
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V_K4<double> const& get_o(void) const {return original;}
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V_K4<double> const& get_t(void) const {return transformed;}
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void transform(const Mmn<double>&, int=0);
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void project_2d(double lcx, double sw, double sh,
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double ph_ar, double sy, int p);
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double unproject_X(double, double, double, double);
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double unproject_Y(double, double, double, double, double, double);
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double unproject_Z(double);
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double unproject_U(double, double, double, double);
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double unproject_V(double, double, double, double, double, double);
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void print() {
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original.print();
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transformed.print();
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cout << "---\n";
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}
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};
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vertex operator*(const double& a, const vertex& v);
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class vertex_list : public container<vertex> {
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protected:
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vertex* variable;
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unsigned var_count;
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public:
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vertex_list()
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: container<vertex>(), variable(NULL), var_count(0) {}
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vertex_list(const vertex& v)
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: container<vertex>(v), variable(NULL), var_count(0) {}
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vertex_list(const vertex* idxs, unsigned count)
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: container<vertex>(idxs, count), variable(NULL), var_count(0) {}
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vertex_list(const vertex_list& v)
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: container<vertex>(v), var_count(v.var_count) {
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if(var_count > 0)
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variable=new vertex[var_count];
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else
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variable=NULL;
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for(unsigned i=0; i<var_count; i++)
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variable[i]=v.variable[i];
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}
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~vertex_list() {
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if(variable) {
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delete [] variable;
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variable=NULL;
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var_count=0;
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}
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}
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vertex& operator[](unsigned index) {
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if(index+1 <= count)
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return content[index];
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else
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index-=count-1;
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if(index+1 > var_count) {
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vertex* content_tmp=new vertex[index+1];
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for(unsigned i=0; i<var_count; i++)
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content_tmp[i]=variable[i];
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delete [] variable;
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variable=content_tmp;
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var_count=index+1;
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}
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return variable[index];
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}
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void resize(unsigned size) {
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if(size < count) {
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if(variable) {
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delete [] variable;
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variable=NULL;
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var_count=0;
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}
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return;
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}
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else
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size-=count;
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vertex* content_tmp;
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if(size>0) {
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content_tmp=new vertex[size];
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for(unsigned i=0; i<size<var_count?size:var_count; i++)
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content_tmp[i]=variable[i];
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}
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else
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content_tmp=NULL;
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delete [] variable;
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variable=content_tmp;
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var_count=size;
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}
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unsigned fix_card(void) { return container<vertex>::card(); }
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unsigned var_card(void) { return var_count; }
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unsigned card(void) { return fix_card()+var_card(); }
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void reset(void);
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};
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#endif // __vertex_h__
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