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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.
*/
/** \file
* \ingroup freestyle
* \brief Class to define a cell grid surrounding the bounding box of the scene
*/
#include <cstdlib>
#include "FastGrid.h"
#include "BKE_global.h"
#include "BLI_utildefines.h"
namespace Freestyle {
void FastGrid::clear()
{
if (!_cells) {
return;
}
for (unsigned int i = 0; i < _cells_size; i++) {
if (_cells[i]) {
delete _cells[i];
}
}
delete[] _cells;
_cells = nullptr;
_cells_size = 0;
Grid::clear();
}
void FastGrid::configure(const Vec3r &orig, const Vec3r &size, unsigned nb)
{
Grid::configure(orig, size, nb);
_cells_size = _cells_nb[0] * _cells_nb[1] * _cells_nb[2];
_cells = new Cell *[_cells_size];
memset(_cells, 0, _cells_size * sizeof(*_cells));
}
Cell *FastGrid::getCell(const Vec3u &p)
{
#if 0
if (G.debug & G_DEBUG_FREESTYLE) {
cout << _cells << " " << p << " " << _cells_nb[0] << "-" << _cells_nb[1] << "-" << _cells_nb[2]
<< " " << _cells_size << endl;
}
#endif
BLI_assert_msg(_cells, "_cells is a null pointer");
BLI_assert((_cells_nb[0] * (p[2] * _cells_nb[1] + p[1]) + p[0]) < _cells_size);
BLI_assert(p[0] < _cells_nb[0]);
BLI_assert(p[1] < _cells_nb[1]);
BLI_assert(p[2] < _cells_nb[2]);
return _cells[_cells_nb[0] * (p[2] * _cells_nb[1] + p[1]) + p[0]];
}
void FastGrid::fillCell(const Vec3u &p, Cell &cell)
{
BLI_assert_msg(_cells, "_cells is a null pointer");
BLI_assert((_cells_nb[0] * (p[2] * _cells_nb[1] + p[1]) + p[0]) < _cells_size);
BLI_assert(p[0] < _cells_nb[0]);
BLI_assert(p[1] < _cells_nb[1]);
BLI_assert(p[2] < _cells_nb[2]);
_cells[_cells_nb[0] * (p[2] * _cells_nb[1] + p[1]) + p[0]] = &cell;
}
} /* namespace Freestyle */
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