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84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// 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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_HEIGHT_MAP_H
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#define NL_HEIGHT_MAP_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/bitmap.h"
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#include <vector>
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namespace NL3D
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{
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// ***************************************************************************
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/**
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* A HeightMap. The heightMap is oriented left-right(X+) / bottom-top(Y+).
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* \author Lionel Berenguier
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* \author Nevrax France
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* \date 2001
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*/
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class CHeightMap
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{
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public:
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std::vector<uint8> Heights;
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/// The origin of the bottom-left corner of this heightmap.
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float OriginX, OriginY;
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/// The size of one Element ot this HeightMap (eg: 160x160 for a zone).
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float SizeX, SizeY;
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/// The range of heights: 0 to MaxZ.
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float MaxZ;
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public:
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/// Constructor
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CHeightMap()
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{
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SizeX= SizeY= 160;
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OriginX= OriginY= 0;
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MaxZ= 100;
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}
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/// resize the heightmap. resize Heights too.
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void resize(uint w, uint h);
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uint getWidth() const {return _Width;}
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uint getHeight() const {return _Height;}
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/// return the ZValue, interval is: 0-MaxZ. nlassert(x,y).
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float getZ(uint x, uint y) const;
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/** This tool method build a HeightMap, from a bitmap, resize(), and fill Heights.
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* value are read from bitmap luminance value. NB: Lines are inverted, because bitmap definition is left-right / top-bottom.
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*/
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void buildFromBitmap(const NLMISC::CBitmap &bitmap);
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private:
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/// The size of this array. Heights.size
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uint _Width, _Height;
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};
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} // NL3D
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#endif // NL_HEIGHT_MAP_H
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/* End of height_map.h */
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