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/*
* 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __FASTGRID_H__
#define __FASTGRID_H__
/** \file \ingroup freestyle
* \brief Class to define a cell grid surrounding the bounding box of the scene
*/
#include "Grid.h"
namespace Freestyle {
/*! Class to define a regular grid used for ray casting computations
* We don't use a hashtable here. The grid is explicitly stored for faster computations.
* However, this might result in significant increase in memory usage (compared to the regular grid)
*/
class FastGrid : public Grid
{
public:
FastGrid() : Grid()
{
_cells = NULL;
_cells_size = 0;
}
virtual ~FastGrid()
{
clear();
}
/*! clears the grid
* Deletes all the cells, clears the hashtable, resets size, size of cell, number of cells.
*/
virtual void clear();
/*! Sets the different parameters of the grid
* orig
* The grid origin
* size
* The grid's dimensions
* nb
* The number of cells of the grid
*/
virtual void configure(const Vec3r& orig, const Vec3r& size, unsigned nb);
/*! returns the cell whose coordinates are pased as argument */
Cell *getCell(const Vec3u& p);
/*! Fills the case p with the cell iCell */
virtual void fillCell(const Vec3u& p, Cell& cell);
protected:
Cell **_cells;
unsigned _cells_size;
#ifdef WITH_CXX_GUARDEDALLOC
MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:FastGrid")
#endif
};
} /* namespace Freestyle */
#endif // __FASTGRID_H__
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