Ogre::Grid3DPageStrategyData Class Reference

Specialisation of PageStrategyData for Grid3DPageStrategy. More...

#include <OgreGrid3DPageStrategy.h>

Inheritance diagram for Ogre::Grid3DPageStrategyData:

Public Member Functions
	Grid3DPageStrategyData ()
	~Grid3DPageStrategyData ()
void	calculateCell (PageID inPageID, int32 *x, int32 *y, int32 *z)
PageID	calculatePageID (int32 x, int32 y, int32 z)
void	determineGridLocation (const Vector3 &gridpos, int32 *x, int32 *y, int32 *z)
	Convert a grid position into a row and column index. More...
virtual void	getBottomLeftGridSpace (int32 x, int32 y, int z, Vector3 &bl)
	Get the (grid space) bottom-left of a cell. More...
virtual int32	getCellRangeMaxX () const
	get the index range of all cells (values outside this will be ignored) More...
virtual int32	getCellRangeMaxY () const
	get the index range of all cells (values outside this will be ignored) More...
virtual int32	getCellRangeMaxZ () const
	get the index range of all cells (values outside this will be ignored) More...
virtual int32	getCellRangeMinX () const
	get the index range of all cells (values outside this will be ignored) More...
virtual int32	getCellRangeMinY () const
	get the index range of all cells (values outside this will be ignored) More...
virtual int32	getCellRangeMinZ () const
	get the index range of all cells (values outside this will be ignored) More...
virtual Vector3	getCellSize () const
	Get the size of the cells in the grid. More...
virtual void	getCornersGridSpace (int32 x, int32 y, int32 z, Vector3 *pEightPoints)
	Get the (grid space) corners of a cell. More...
virtual Real	getHoldRadius () const
	Get the Holding radius. More...
virtual Real	getLoadRadius () const
	Get the loading radius. More...
virtual void	getMidPointGridSpace (int32 x, int32 y, int32 z, Vector3 &mid)
virtual const Vector3 &	getOrigin (const Vector3 &worldOrigin)
	Get the origin of the grid in world space. More...
bool	load (StreamSerialiser &stream)
	Load this data from a stream (returns true if successful) More...
void	save (StreamSerialiser &stream)
	Save this data to a stream. More...
virtual void	setCellRange (int32 minX, int32 minY, int32 minZ, int32 maxX, int32 maxY, int32 maxZ)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMaxX (int32 maxX)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMaxY (int32 maxY)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMaxZ (int32 maxZ)
	get the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMinX (int32 minX)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMinY (int32 minY)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellRangeMinZ (int32 minZ)
	Set the index range of all cells (values outside this will be ignored) More...
virtual void	setCellSize (const Vector3 &sz)
	Set the size of the cells in the grid. More...
virtual void	setHoldRadius (Real sz)
	Set the Holding radius. More...
virtual void	setLoadRadius (Real sz)
	Set the loading radius. More...
virtual void	setOrigin (const Vector3 &worldOrigin)
	Set the origin of the grid in world space. More...
Public Member Functions inherited from Ogre::PageStrategyData
	PageStrategyData ()
virtual	~PageStrategyData ()

Static Public Attributes
static const uint32	CHUNK_ID
static const uint16	CHUNK_VERSION

Detailed Description

Specialisation of PageStrategyData for Grid3DPageStrategy.

Remarks

Structurally this data defines with a 3D grid of pages, with the logical origin in the center of the entire grid. The grid cells are indexed from 0 as a 'centre' slot, supporting both positive and negative values. so (0,0,0) is the centre cell, (1,0,0) is the cell to the right of the centre, (0,0,1) is the cell in front of the centre, (0,1,0) the cell above the center, etc. The maximum extent of each axis is -512 to +511, so in other words enough for over 2 billion different entries.

To limit the page load requests that are generated to a fixed region, you can set the min and max cell indexes (inclusive)for each direction; if a page request would address a cell outside this range it is ignored so you don't have the expense of checking for page data that will never exist.

The data format for this in a file is:
Grid3DPageStrategyData (Identifier 'G3DD')
[Version 1]

Name	Type	Description
Grid origin	Vector3	World origin of the grid.
Grid cell size	Vector3	The size of each cell (page) in the grid
Grid cell range (minx, maxx, miny, maxy, minz, maxz)	int16 * 6	The extents of the world in cell indexes
Load radius	Real	The outer radius at which new pages should start loading
Hold radius	Real	The radius at which existing pages should be held if already loaded but not actively loaded (should be larger than Load radius)

See also

Grid2DPageStrategyData

---

The documentation for this class was generated from the following file:

• OgreGrid3DPageStrategy.h