com.sun.prism.impl.packrect

Class RectanglePacker

java.lang.Object

com.sun.prism.impl.packrect.RectanglePacker

public class RectanglePacker
extends Object

Packs rectangles supplied by the user (typically representing image regions) into a larger backing store rectangle (typically representing a large texture). Supports automatic compaction of the space on the backing store, and automatic expansion of the backing store, when necessary.

Constructor Summary

Constructors

Constructor and Description
RectanglePacker(Texture backingStore, int width, int height) Creates a new RectanglePacker.
RectanglePacker(Texture backingStore, int x, int y, int width, int height, boolean vertical)

Method Summary

Modifier and Type	Method and Description
boolean	add(Rectangle rect) Decides upon an (x, y) position for the given rectangle (leaving its width and height unchanged) and places it on the backing store.
void	clear() Clears all Rectangles contained in this RectanglePacker.
void	dispose() Disposes the backing store allocated by the BackingStoreManager.
Texture	getBackingStore() Gets a reference to the backing store, creating it lazily if necessary.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RectanglePacker

public RectanglePacker(Texture backingStore,
                       int x,
                       int y,
                       int width,
                       int height,
                       boolean vertical)

RectanglePacker

public RectanglePacker(Texture backingStore,
                       int width,
                       int height)

Creates a new RectanglePacker. You must specify the texture used as the backing store, and the width and height of the space within which rectangles are to be packed.

Parameters:

backingStore - The backing store texture, must not be null

width - The width of the backing store, must be > 0 (typically > 512)

height - The height of the backing store, must be > 0 (typically > 512)

Method Detail

getBackingStore

public final Texture getBackingStore()

Gets a reference to the backing store, creating it lazily if necessary.

Returns:

A reference to the backing store.

add

public final boolean add(Rectangle rect)

Decides upon an (x, y) position for the given rectangle (leaving its width and height unchanged) and places it on the backing store.

clear

public void clear()

Clears all Rectangles contained in this RectanglePacker.

dispose

public void dispose()

Disposes the backing store allocated by the BackingStoreManager. This RectanglePacker may no longer be used after calling this method.