| java.lang.Object
 net.refractions.udig.project.render.TileCalculator
| TileCalculator | | public class TileCalculator (Code) | | A helper class which divides an area into tiles or a minimum size. Provides a
number of convenience methods.
author:
jones |
| TileCalculator | | public TileCalculator(AffineTransform worldToScreen, Dimension tileSize)(Code) | | Creates a new instance, the bounds must be set before it is ready to be used.
Parameters:
worldToScreen - the transform from world coordinates to screen coordinates
Parameters:
tileSize - the size of the tiles to create. |
| TileCalculator | | public TileCalculator(AffineTransform worldToScreen, Dimension tileSize, Envelope bounds)(Code) | | Creates a new instance. It is ready to be queried immediately.
Parameters:
worldToScreen - the transform from world coordinates to screen coordinates
Parameters:
tileSize - the size of the tiles to create. |
| getBounds | | public Envelope getBounds()(Code) | | Returns the bounds. |
| getScreenTile | | public Rectangle getScreenTile(int x, int y)(Code) | | Return the Rectangle (screen coordinates) of the tile indexed by x and y.
the Rectangle (screen coordinates) of the tile indexed by x and y. |
| getWorldRandom | | public Envelope getWorldRandom()(Code) | | Gets a random tile in world coordinates. Each tile is visited only once and after all the tiles
have been visited null will be returned.
WARNING:
If each tile is visited one and only once regardless of whether
TileCalculator.getWorldRandom() or
TileCalculator.getScreenRandom() is used
a random tile in world coordinates. |
| getWorldTile | | public Envelope getWorldTile(int x, int y)(Code) | | Return the Envelope (world coordinates) of the tile indexed by x and y.
the Envelope (world coordinates) of the tile indexed by x and y. |
| numXTiles | | public int numXTiles()(Code) | | Returns the number of tiles in the X-direction
|
| numYTiles | | public int numYTiles()(Code) | | Returns the number of tiles in the Y-direction
|
| resetRandomizer | | public void resetRandomizer()(Code) | | Resets so that the getRandom() will clear its cache of visited tiles.
|
| setBounds | | public void setBounds(Envelope bounds)(Code) | |
Parameters:
bounds - The bounds to set. |
| setTileSize | | public void setTileSize(Dimension tileSize)(Code) | |
Parameters:
tileSize - The tileSize to set. |
| setWorldToScreen | | public void setWorldToScreen(AffineTransform worldToScreen)(Code) | |
Parameters:
worldToScreen - The worldToScreen to set. |
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