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/* Copyright (C) 2012 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. 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.
*
* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDED_HELPER_RASTERIZE
#define INCLUDED_HELPER_RASTERIZE
/**
* @file
* Helper functions related to rasterizing geometric shapes to grids.
*/
#include "simulation2/components/ICmpObstructionManager.h"
namespace SimRasterize
{
/**
* Represents the set of cells (i,j) where i0 <= i < i1
*/
struct Span
{
i16 i0;
i16 i1;
i16 j;
};
typedef std::vector<Span> Spans;
/**
* Converts an ObstructionSquare @p shape (a rotated rectangle),
* expanded by the given @p clearance,
* into a list of spans of cells that are strictly inside the shape.
*/
void RasterizeRectWithClearance(Spans& spans,
const ICmpObstructionManager::ObstructionSquare& shape,
entity_pos_t clearance, entity_pos_t cellSize);
}
#endif // INCLUDED_HELPER_RASTERIZE
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