2017-03-15 19:43:10 +00:00
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// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
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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 CL_FOG_MAP_H
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#define CL_FOG_MAP_H
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#include "nel/misc/bitmap.h"
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#include "nel/misc/vector_2f.h"
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//
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#include "light_cycle_manager.h"
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//
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#include "game_share/fog_map_build.h"
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namespace NL3D
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{
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class UDriver;
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}
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// Fog state, can be setup in a driver
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struct CFogState
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{
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CFogState() : FogEnabled(false)
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{
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}
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bool FogEnabled;
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NLMISC::CRGBA FogColor;
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float FogStartDist;
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float FogEndDist;
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void setupInDriver(NL3D::UDriver &drv);
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};
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// A class that encodes fog color and distances
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class CFogMap
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{
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public:
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typedef CFogMapBuild::TMapType TMapType; // enumeration of various fog map
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public:
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// default ctor
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CFogMap();
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/** Init the fog map from a descriptor, and load the maps
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* NB : lookup are performed on file names
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* \return true if the initialisation succeed
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*/
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bool init(const CFogMapBuild &desc);
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// init with explicit corners
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bool init(const CFogMapBuild &desc, const NLMISC::CVector &minCoord, const NLMISC::CVector &maxCoord);
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// Release datas
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void release();
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/// Compute the fog parameters at the given position.
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void getFogParams(float referenceStartDist, float referenceEndDist, float x, float y, float dayNight, float duskRatio, CLightCycleManager::TLightState lightState, CFogState &result);
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/** Get a map value with a world (x, y) position
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* Default value is returned if no map was specified or if map wasn't loaded
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*/
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NLMISC::CRGBAF getMapValue(TMapType type, float x, float y, NLMISC::CRGBAF defaultValue) const;
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//
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NLMISC::CBitmap &getMap(TMapType type) { nlassert(type < CFogMapBuild::NumMap); return _Map[type]; }
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const NLMISC::CVector2f &getMinCoord() const { return _MinCoord; }
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const NLMISC::CVector2f &getMaxCoord() const { return _MaxCoord; }
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// convert a wortld pos into a map pos
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void worldPosToMapPos(float inX, float inY, float &outX, float &outY) const;
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private:
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NLMISC::CVector2f _MinCoord;
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NLMISC::CVector2f _MaxCoord;
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NLMISC::CBitmap _Map[CFogMapBuild::NumMap];
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private:
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void load(NLMISC::CBitmap &bm, const std::string &filename);
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NLMISC::CRGBAF getMapValueFromMapCoord(TMapType type, float x, float y, NLMISC::CRGBAF defaultValue) const;
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};
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#endif
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