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55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
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/* Copyright (C) 2012 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef INCLUDED_HELPER_RASTERIZE
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#define INCLUDED_HELPER_RASTERIZE
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/**
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* @file
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* Helper functions related to rasterizing geometric shapes to grids.
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*/
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#include "simulation2/components/ICmpObstructionManager.h"
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namespace SimRasterize
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{
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/**
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* Represents the set of cells (i,j) where i0 <= i < i1
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*/
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struct Span
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{
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i16 i0;
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i16 i1;
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i16 j;
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};
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typedef std::vector<Span> Spans;
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/**
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* Converts an ObstructionSquare @p shape (a rotated rectangle),
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* expanded by the given @p clearance,
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* into a list of spans of cells that are strictly inside the shape.
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*/
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void RasterizeRectWithClearance(Spans& spans,
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const ICmpObstructionManager::ObstructionSquare& shape,
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entity_pos_t clearance, entity_pos_t cellSize);
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}
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#endif // INCLUDED_HELPER_RASTERIZE
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