OgreGrid2DPageStrategy.h
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1 /*
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3 This source file is part of OGRE
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5 For the latest info, see http://www.ogre3d.org/
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28 
29 #ifndef __Ogre_Grid2DPageStrategy_H__
30 #define __Ogre_Grid2DPageStrategy_H__
31 
33 #include "OgrePageStrategy.h"
34 #include "OgreVector2.h"
35 #include "OgreVector3.h"
36 #include "OgreQuaternion.h"
37 
38 namespace Ogre
39 {
49  enum Grid2DMode
51  {
53  G2D_X_Z = 0,
55  G2D_X_Y = 1,
57  G2D_Y_Z = 2
58  };
121  {
122  protected:
141 
142  void updateDerivedMetrics();
143 
144  public:
145  static const uint32 CHUNK_ID;
146  static const uint16 CHUNK_VERSION;
147 
150 
152  virtual void setMode(Grid2DMode mode);
153 
155  virtual Grid2DMode getMode() const { return mMode; }
156 
158  virtual void setOrigin(const Vector3& worldOrigin);
160  virtual const Vector3& getOrigin(const Vector3& worldOrigin) { return mWorldOrigin; }
162  virtual void setCellSize(Real sz);
164  virtual Real getCellSize() const { return mCellSize; }
166  virtual void setLoadRadius(Real sz);
168  virtual Real getLoadRadius() const { return mLoadRadius; }
170  virtual void setHoldRadius(Real sz);
172  virtual Real getHoldRadius() const { return mHoldRadius; }
174  virtual Real getLoadRadiusInCells() { return mLoadRadiusInCells; }
176  virtual Real getHoldRadiusInCells(){ return mHoldRadiusInCells; }
177 
179  virtual void setCellRange(int32 minX, int32 minY, int32 maxX, int32 maxY);
181  virtual void setCellRangeMinX(int32 minX);
183  virtual void setCellRangeMinY(int32 minY);
185  virtual void setCellRangeMaxX(int32 maxX);
187  virtual void setCellRangeMaxY(int32 maxY);
189  virtual int32 getCellRangeMinX() const { return mMinCellX; }
191  virtual int32 getCellRangeMinY() const { return mMinCellY; }
193  virtual int32 getCellRangeMaxX() const { return mMaxCellX; }
195  virtual int32 getCellRangeMaxY() const { return mMaxCellY; }
196 
198  bool load(StreamSerialiser& stream);
200  void save(StreamSerialiser& stream);
201 
203  virtual void convertWorldToGridSpace(const Vector3& world, Vector2& grid);
205  virtual void convertGridToWorldSpace(const Vector2& grid, Vector3& world);
207  virtual void getMidPointGridSpace(int32 x, int32 y, Vector2& mid);
209  virtual void getBottomLeftGridSpace(int32 x, int32 y, Vector2& bl);
214  virtual void getCornersGridSpace(int32 x, int32 y, Vector2* pFourPoints);
215 
217  void determineGridLocation(const Vector2& gridpos, int32* x, int32* y);
218 
219  PageID calculatePageID(int32 x, int32 y);
220  void calculateCell(PageID inPageID, int32* x, int32* y);
221 
222  };
223 
224 
232  {
233  public:
235 
237 
238  // Overridden members
239  void notifyCamera(Camera* cam, PagedWorldSection* section);
240  PageStrategyData* createData();
241  void destroyData(PageStrategyData* d);
242  void updateDebugDisplay(Page* p, SceneNode* sn);
243  PageID getPageID(const Vector3& worldPos, PagedWorldSection* section);
244  };
245 
248 }
249 
250 #endif
#define _OgrePagingExport
Specialisation of PageStrategyData for Grid2DPageStrategy.
Grid2DMode
The 2D grid mode.
virtual Real getCellSize() const
Get the size of the cells in the grid.
virtual Real getLoadRadius() const
Get the loading radius.
virtual int32 getCellRangeMaxY() const
get the index range of all cells (values outside this will be ignored)
Page class.
Definition: OgrePage.h:49
Standard 2-dimensional vector.
Definition: OgreVector2.h:51
virtual Real getHoldRadius() const
Get the Holding radius.
float Real
Software floating point type.
Grid2DMode mMode
Orientation of the grid.
Represents a section of the PagedWorld which uses a given PageStrategy, and which is made up of a gen...
Class representing a node in the scene graph.
Definition: OgreSceneNode.h:58
virtual int32 getCellRangeMinY() const
get the index range of all cells (values outside this will be ignored)
Grid is in the X/Y plane.
Standard 3-dimensional vector.
Definition: OgreVector3.h:51
Abstract marker class representing the data held against the PagedWorldSection which is specifically ...
virtual Real getLoadRadiusInCells()
Get the load radius as a multiple of cells.
The PageManager is the entry point through which you load all PagedWorld instances, and the place where PageStrategy instances and factory classes are registered to customise the paging behaviour.
Utility class providing helper methods for reading / writing structured data held in a DataStream...
int int32
Definition: OgrePlatform.h:362
A viewpoint from which the scene will be rendered.
Definition: OgreCamera.h:86
virtual int32 getCellRangeMaxX() const
get the index range of all cells (values outside this will be ignored)
Page strategy which loads new pages based on a regular 2D grid.
Vector2 mOrigin
Origin (grid-aligned world space)
virtual const Vector3 & getOrigin(const Vector3 &worldOrigin)
Get the origin of the grid in world space.
uint32 PageID
Identifier for a page.
unsigned int uint32
Definition: OgrePlatform.h:359
Real mCellSize
Grid cell (page) size.
Vector3 mWorldOrigin
Origin (world space)
virtual Grid2DMode getMode() const
Set the grid alignment mode.
Grid is in the Y/Z plane.
virtual Real getHoldRadiusInCells()
Get the Hold radius as a multiple of cells.
Grid is in the X/Z plane.
virtual int32 getCellRangeMinX() const
get the index range of all cells (values outside this will be ignored)
unsigned short uint16
Definition: OgrePlatform.h:360
Defines the interface to a strategy class which is responsible for deciding when Page instances are r...

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Last modified Wed Jun 25 2014 20:52:45