Mercator
Terrain.h
00001 // This file may be redistributed and modified only under the terms of
00002 // the GNU General Public License (See COPYING for details).
00003 // Copyright (C) 2003 Alistair Riddoch, Damien McGinnes
00004 
00005 #ifndef MERCATOR_TERRAIN_H
00006 #define MERCATOR_TERRAIN_H
00007 
00008 #include <Mercator/Mercator.h>
00009 #include <Mercator/BasePoint.h>
00010 
00011 #include <wfmath/vector.h>
00012 #include <wfmath/axisbox.h>
00013 
00014 #include <map>
00015 #include <set>
00016 #include <list>
00017 #include <cmath>
00018 
00019 namespace Mercator {
00020 
00021 class Segment;
00022 class Shader;
00023 class TerrainMod;
00024 class Area;
00025 class Effector;
00026 
00035 class Terrain {
00036   public:
00038     typedef WFMath::AxisBox<2> Rect;
00039 
00041     typedef std::map<int, BasePoint> Pointcolumn;
00043     typedef std::map<int, Segment *> Segmentcolumn;
00044 
00046     typedef std::map<int, Pointcolumn > Pointstore;
00048     typedef std::map<int, Segmentcolumn > Segmentstore;
00049 
00051     typedef std::map<int, const Shader *> Shaderstore;
00052 
00054     typedef std::map<const Effector *, Rect> Effectorstore;
00055 
00057     static const unsigned int DEFAULT = 0x0000;
00059     static const unsigned int SHADED = 0x0001;
00060     // More options go here as bit flags, and below should be a private
00061     // test function
00062   private:
00064     const unsigned int m_options;
00066     const int m_res;
00067 
00069     Pointstore m_basePoints;
00071     Segmentstore m_segments;
00073     Shaderstore m_shaders;
00074   
00076     Effectorstore m_effectors;
00077   
00078     void addSurfaces(Segment &);
00079     void shadeSurfaces(Segment &);
00080 
00081     void addEffector(const Effector * effector);
00082 
00089     Rect updateEffector(const Effector * effector);
00090     void removeEffector(const Effector * effector);
00091     
00095     bool isShaded() const {
00096         return ((m_options & SHADED) == SHADED);
00097     }
00098   public:
00100     static const float defaultLevel;
00101 
00102     explicit Terrain(unsigned int options = DEFAULT,
00103                      unsigned int resolution = defaultResolution);
00104     ~Terrain();
00105 
00106     float get(float x, float y) const;
00107     bool getHeightAndNormal(float x, float y, float&, WFMath::Vector<3>&) const;
00108 
00109     bool getBasePoint(int x, int y, BasePoint& z) const;
00110     void setBasePoint(int x, int y, const BasePoint& z);
00111 
00113     void setBasePoint(int x, int y, float z) {
00114         BasePoint bp(z);
00115         setBasePoint(x, y, bp);
00116     }
00117 
00122     Segment * getSegment(float x, float y) const {
00123         int ix = (int)floor(x / m_res);
00124         int iy = (int)floor(y / m_res);
00125         return getSegment(ix, iy);
00126     }
00127 
00128     Segment * getSegment(int x, int y) const;
00129 
00131     const int getResolution() const {
00132         return m_res;
00133     }
00134 
00136     const Segmentstore & getTerrain() const {
00137         return m_segments;
00138     }
00139 
00141     const Pointstore & getPoints() const {
00142         return m_basePoints;
00143     }
00144     
00146     const Shaderstore & getShaders() const {
00147         return m_shaders;
00148     }
00149 
00151     void addShader(const Shader * t, int id);
00152     void removeShader(const Shader * t, int id);
00153     
00154     void addMod(const TerrainMod * mod);
00155 
00162     Rect updateMod(const TerrainMod * mod);
00163     void removeMod(const TerrainMod * mod);
00164     
00165     void addArea(const Area* a);
00166 
00173     Rect updateArea(const Area* a);
00174     void removeArea(const Area* a);
00175 };
00176 
00177 } // namespace Mercator
00178 
00179 #endif // MERCATOR_TERRAIN_H