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Diffstat (limited to 'source/blender/freestyle/intern/geometry/FastGrid.h')
-rwxr-xr-x | source/blender/freestyle/intern/geometry/FastGrid.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/source/blender/freestyle/intern/geometry/FastGrid.h b/source/blender/freestyle/intern/geometry/FastGrid.h new file mode 100755 index 00000000000..e620ff24385 --- /dev/null +++ b/source/blender/freestyle/intern/geometry/FastGrid.h @@ -0,0 +1,85 @@ +// +// Filename : FastGrid.h +// Author(s) : Stephane Grabli +// Purpose : Class to define a cell grid surrounding the +// bounding box of the scene +// Date of creation : 30/07/2002 +// +/////////////////////////////////////////////////////////////////////////////// + + +// +// Copyright (C) : Please refer to the COPYRIGHT file distributed +// with this source distribution. +// +// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef FASTGRID_H +# define FASTGRID_H + +# include "Grid.h" +# include <cassert> +/*! 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 LIB_GEOMETRY_EXPORT 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; +}; + +#endif // FASTGRID_H |