vcglib/vcg/container/simple_temporary_data.h

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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.4 2005/07/11 13:12:34 cignoni
small gcc-related compiling issues (typenames,ending cr, initialization order)
Revision 1.3 2004/12/11 15:37:47 ganovelli
added one more [], now it is polymorphic, added typenames
Revision 1.2 2004/03/31 22:36:44 ganovelli
First Working Release (with this comment)
****************************************************************************/
#ifndef __VCGLIB_SIMPLE__
#define __VCGLIB_SIMPLE__
#include <vector>
namespace vcg {
template <class STL_CONT, class ATTR_TYPE>
class SimpleTempData{
public:
STL_CONT& c;
std::vector<ATTR_TYPE> data;
SimpleTempData(STL_CONT &_c):c(_c){};
// access to data
ATTR_TYPE & operator[](const typename STL_CONT::value_type & v){return data[&v-&*c.begin()];}
ATTR_TYPE & operator[](const typename STL_CONT::value_type * v){return data[v-&*c.begin()];}
ATTR_TYPE & operator[](const typename STL_CONT::iterator & cont){return data[&(*cont)-&*c.begin()];}
ATTR_TYPE & operator[](const int & i){return data[i];}
// start temporary attribute
void Start(){data.reserve(c.capacity());data.resize(c.size());}
// start and initialize temporary attribute
void Start(ATTR_TYPE val){data.reserve(c.capacity());data.resize(c.size());
typename std::vector<ATTR_TYPE>::iterator i;
for(i = data.begin(); i!= data.end(); ++i)
*i = val;
}
// stop temporary attribute
void Stop(){data.clear();}
// update temproary data size
bool UpdateSize(){
if(data.size() != c.size())
{
data.resize(c.size());
return false;
}
return true;
}
};
}; // end namespace vcg
#endif