87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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 Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __FASTGRID_H__
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#define __FASTGRID_H__
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/** \file blender/freestyle/intern/geometry/FastGrid.h
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* \ingroup freestyle
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* \brief Class to define a cell grid surrounding the bounding box of the scene
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* \author Stephane Grabli
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* \date 30/07/2002
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*/
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#include "Grid.h"
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namespace Freestyle {
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/*! Class to define a regular grid used for ray casting computations
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* We don't use a hashtable here. The grid is explicitly stored for faster computations.
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* However, this might result in significant increase in memory usage (compared to the regular grid)
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*/
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class FastGrid : public Grid
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{
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public:
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FastGrid() : Grid()
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{
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_cells = NULL;
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_cells_size = 0;
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}
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virtual ~FastGrid()
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{
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clear();
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}
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/*! clears the grid
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* Deletes all the cells, clears the hashtable, resets size, size of cell, number of cells.
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*/
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virtual void clear();
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/*! Sets the different parameters of the grid
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* orig
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* The grid origin
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* size
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* The grid's dimensions
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* nb
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* The number of cells of the grid
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*/
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virtual void configure(const Vec3r& orig, const Vec3r& size, unsigned nb);
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/*! returns the cell whose coordinates are pased as argument */
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Cell *getCell(const Vec3u& p);
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/*! Fills the case p with the cell iCell */
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virtual void fillCell(const Vec3u& p, Cell& cell);
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protected:
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Cell **_cells;
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unsigned _cells_size;
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#ifdef WITH_CXX_GUARDEDALLOC
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MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:FastGrid")
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#endif
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};
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} /* namespace Freestyle */
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#endif // __FASTGRID_H__
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