␡
- Applying Rendering Hints
- Managing Memory
- Scheduling Tiles
- Reformatting an Image
- Extending the Border
- A Rendering Example
- A Closer Look at the PlanarImage Class
- Using the RenderedOp Class
- Working with Tiles
- A Tiled-Image Viewer
- Writing to Pixels
- Creating an Aggregate Image
- A JAI Image Browser
- The Renderable Layer
- Conclusion
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Scheduling Tiles
Like TileCache, TileScheduler is an interface. It has three methods for managing the tile-scheduling computation:
public Raster scheduleTile(OpImage target, int tileX, int tileY)public Raster[] scheduleTiles(OpImage target, Point[] tileIndices)public void prefetchTiles(PlanarImage target, Point[] tileIndices)
Here's an example:
Point[] tileIndices = { new Point(0,0), new Point(1,0), new Point(2,0)};
TileCache tileCache = JAI.getDefaultInstance().getTileCache();
tileCache.prefetchTiles(image, tileIndices);
This example gives a hint to prefetch the first three tiles of an image.
Just as the setTileCache() method is used to set TileCache, you can use setTileScheduler() to set a TileScheduler object. Unlike TileCache, however, TileScheduler is not a rendering hint.