222 lines
7.9 KiB
C++
222 lines
7.9 KiB
C++
/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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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 (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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$Log: not supported by cvs2svn $
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Revision 1.4 2006/12/04 11:11:07 ganovelli
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add const to IsEnabledAttribute
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Revision 1.3 2006/12/03 18:01:01 ganovelli
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versione compliant vs2005
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Revision 1.2 2006/06/08 20:28:38 ganovelli
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Corretto IsEnabledAttribute
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Revision 1.1 2005/10/15 16:21:49 ganovelli
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Working release (compilata solo su MSVC), vector_occ <20> migrato da component_opt
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Revision 1.5 2005/07/07 13:33:52 ganovelli
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some comment
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Revision 1.4 2004/04/05 18:20:08 ganovelli
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Aggiunto typename
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Revision 1.3 2004/03/31 22:36:44 ganovelli
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First Working Release (with this comment)
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/****************************************************************************/
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#ifndef __VCGLIB_TRACED_VECTOR__
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#define __VCGLIB_TRACED_VECTOR__
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#include <vcg/container/container_allocation_table.h>
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#include <vcg/container/entries_allocation_table.h>
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#include <assert.h>
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namespace vcg {
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/*@{*/
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/*!
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* This class represent a vector_occ. A vector_occ is derived by a std::vector.
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* The characteristic of a vector_occ is that you can add (at run time) new attributes
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* to the container::value_type elements contained in the vector. (see the example..)
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* The position in memory of a traced vector is kept by the Container Allocation Table,
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* which is a (unique) list of vector_occ positions.
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*/
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template <class VALUE_TYPE>
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class vector_occ: public std::vector<VALUE_TYPE>{
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typedef vector_occ<VALUE_TYPE> ThisType;
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typedef std::vector<VALUE_TYPE> TT;
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public:
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vector_occ():std::vector<VALUE_TYPE>(){id = ID(); ID()=ID()+1; reserve(1);}
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~vector_occ();
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VALUE_TYPE * Pointer2begin(){
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if(TT::empty()) return (VALUE_TYPE *)id; else return &*std::vector<VALUE_TYPE>::begin();
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}
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std::list < CATBase<ThisType>* > attributes;
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// override di tutte le funzioni che possono spostare
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// l'allocazione in memoria del container
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void push_back(const VALUE_TYPE & v);
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void pop_back();
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void resize(const unsigned int & size);
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void reserve(const unsigned int & size);
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/// this function enable the use of an optional attribute (see...)
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template <class ATTR_TYPE>
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void EnableAttribute(){
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CAT<ThisType,ATTR_TYPE> * cat = CAT<ThisType,ATTR_TYPE>::New();
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cat->Insert(*this);
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attributes.push_back(cat);
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}
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/// this function returns true if the attribute in the template parameter is enabled
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/// Note: once an attribute is disabled, its data is lost (the memory freed)
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template <class ATTR_TYPE>
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bool IsEnabledAttribute() const{
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typename std::list < CATBase<ThisType> * >::const_iterator ia;
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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if((*ia)->Id() == CAT<ThisType,ATTR_TYPE>::Id())
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return true;
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return false;
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}
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/// this function disable the use of an optional attribute (see...)
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/// Note: once an attribute is disabled, its data is lost (the memory freed)
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template <class ATTR_TYPE>
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void DisableAttribute(){
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typename std::list < CATBase<ThisType> * >::iterator ia;
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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if((*ia)->Id() == CAT<ThisType,ATTR_TYPE>::Id())
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{
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(*ia)->Remove(*this);
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//delete (*ia);
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attributes.erase(ia);
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break;
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}
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}
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/// this function create a new attribute of type ATTR_TYPE and return an handle to
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/// access the value of the attribute. Ex:
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/// vector_occ<float> tv;
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/// TempData<TVect,int> handle = tv.NewTempData<int>();
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/// // now handle[&tv[123]] is the value of integer attribute associate with the position 123 on the vector
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/// // NOTE: it works also if you do some push_back, resize, pop_back, reserve that cause the relocation
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/// // of the vector_occ
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template <class ATTR_TYPE>
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TempData<ThisType,ATTR_TYPE> NewTempData(){
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typedef typename CATEntry<ThisType,EntryCATMulti<ThisType> >::EntryType EntryTypeMulti;
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CATEntry<ThisType,EntryTypeMulti>::Insert(*this);
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EntryTypeMulti entry = CATEntry<ThisType,EntryTypeMulti >::GetEntry(Pointer2begin());
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entry.Data().push_back(new Wrap< ATTR_TYPE>);
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((Wrap<ATTR_TYPE>*)entry.Data().back())->reserve(TT::capacity());
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((Wrap<ATTR_TYPE>*)entry.Data().back())->resize(TT::size());
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return TempData<ThisType,ATTR_TYPE>((Wrap<ATTR_TYPE>*) entry.Data().back());
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}
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/// reciprocal of NewTempData
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template <class ATTR_TYPE>
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void DeleteTempData(TempData<ThisType,ATTR_TYPE> & td){
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typedef typename CATEntry<ThisType,EntryCATMulti<ThisType> >::EntryType EntryTypeMulti;
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CATEntry<ThisType,EntryTypeMulti >::RemoveIfEmpty(*this);
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EntryTypeMulti
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entry = CATEntry<ThisType,EntryCATMulti<ThisType> >::GetEntry(Pointer2begin);
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entry.Data().remove((Wrap<ATTR_TYPE>*)td.Item());
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delete ((Wrap<ATTR_TYPE>*)td.Item());
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}
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private:
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VALUE_TYPE * old_start;
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int id;
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static int & ID(){static int id; return id;}
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void Update();
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};
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/*@}*/
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template <class VALUE_TYPE>
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void vector_occ<VALUE_TYPE>::push_back(const VALUE_TYPE & v){
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std::vector<VALUE_TYPE>::push_back(v);
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Update();
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typename std::list < CATBase<ThisType> * >::iterator ia;
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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(*ia)->AddDataElem(&(*(this->begin())),1);
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}
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template <class VALUE_TYPE>
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void vector_occ<VALUE_TYPE>::pop_back(){
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std::vector<VALUE_TYPE>::pop_back();
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Update();
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}
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template <class VALUE_TYPE>
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void vector_occ<VALUE_TYPE>::resize(const unsigned int & size){
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std::vector<VALUE_TYPE>::resize(size);
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Update();
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typename std::list < CATBase<ThisType> * >::iterator ia;
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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(*ia)->
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Resize(&(*(this->begin())),size);
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}
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template <class VALUE_TYPE>
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void vector_occ<VALUE_TYPE>::reserve(const unsigned int & size){
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std::vector<VALUE_TYPE>::reserve(size);
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Update();
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}
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template <class VALUE_TYPE>
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void vector_occ<VALUE_TYPE>::
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Update(){
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typename std::list < CATBase<ThisType> * >::iterator ia;
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if(Pointer2begin() != old_start)
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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(*ia)->Resort(old_start,Pointer2begin());
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old_start = Pointer2begin();
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}
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template <class VALUE_TYPE>
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vector_occ<VALUE_TYPE>::~vector_occ(){
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typename std::list < CATBase<ThisType> * >::iterator ia;
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for(ia = attributes.begin(); ia != attributes.end(); ++ia)
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{
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(*ia)->Remove(*this);
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delete *ia;
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}
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}
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}; // end namespace
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#endif
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