gov.nasa.worldwind.util

Class TextureAtlas.AtlasBackingStore

java.lang.Object

gov.nasa.worldwind.util.TextureAtlas.AtlasBackingStore

All Implemented Interfaces:

com.jogamp.opengl.util.packrect.BackingStoreManager

Enclosing class:

TextureAtlas

protected class TextureAtlas.AtlasBackingStore
extends java.lang.Object
implements com.jogamp.opengl.util.packrect.BackingStoreManager

Implementation of the JOGL BackingStoreManager interface for texture atlas. This is used by the JOGL RectanglePacker, and delegates calls from a JOGL rectangle packer to methods in this texture atlas.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AtlasBackingStore()

Method Summary

Modifier and Type	Method and Description
boolean	additionFailed(com.jogamp.opengl.util.packrect.Rect cause, int attemptNumber)
java.lang.Object	allocateBackingStore(int w, int h)
void	beginMovement(java.lang.Object oldBackingStore, java.lang.Object newBackingStore)
boolean	canCompact()
void	deleteBackingStore(java.lang.Object backingStore)
void	endMovement(java.lang.Object oldBackingStore, java.lang.Object newBackingStore)
void	move(java.lang.Object oldBackingStore, com.jogamp.opengl.util.packrect.Rect oldLocation, java.lang.Object newBackingStore, com.jogamp.opengl.util.packrect.Rect newLocation)
boolean	preExpand(com.jogamp.opengl.util.packrect.Rect cause, int attemptNumber)

Methods inherited from class java.lang.Object

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

Constructor Detail

AtlasBackingStore

protected AtlasBackingStore()

Method Detail

additionFailed

public boolean additionFailed(com.jogamp.opengl.util.packrect.Rect cause,
                              int attemptNumber)

If this texture atlas is configured to evicts old elements, this attempts to remove the oldest one then exits, allowing the caller to attempt the addition again. This throws a WWRuntimeException if this texture atlas is not configured to evict old elements, or if there are no more elements to evict.

Specified by:

additionFailed in interface com.jogamp.opengl.util.packrect.BackingStoreManager

Throws:

WWRuntimeException - if this backing store cannot fit the rectangle in its layout.

allocateBackingStore

public java.lang.Object allocateBackingStore(int w,
                                             int h)

Calls TextureAtlas.createBackingImage(int, int) with the specified width and height.

Specified by:

allocateBackingStore in interface com.jogamp.opengl.util.packrect.BackingStoreManager

beginMovement

public void beginMovement(java.lang.Object oldBackingStore,
                          java.lang.Object newBackingStore)

Calls TextureAtlas.beginMoveEntries(java.awt.image.BufferedImage, java.awt.image.BufferedImage), casting the specified backing stores to BufferedImages.

Specified by:

beginMovement in interface com.jogamp.opengl.util.packrect.BackingStoreManager

canCompact

public boolean canCompact()

Returns true. The texture atlas can always attempt to expand or compact.

Specified by:

canCompact in interface com.jogamp.opengl.util.packrect.BackingStoreManager

deleteBackingStore

public void deleteBackingStore(java.lang.Object backingStore)

Calls TextureAtlas.disposeBackingImage().

Specified by:

deleteBackingStore in interface com.jogamp.opengl.util.packrect.BackingStoreManager

endMovement

public void endMovement(java.lang.Object oldBackingStore,
                        java.lang.Object newBackingStore)

Calls TextureAtlas.endMoveEntries(java.awt.image.BufferedImage, java.awt.image.BufferedImage), casting the specified backing stores to BufferedImages.

Specified by:

endMovement in interface com.jogamp.opengl.util.packrect.BackingStoreManager

move

public void move(java.lang.Object oldBackingStore,
                 com.jogamp.opengl.util.packrect.Rect oldLocation,
                 java.lang.Object newBackingStore,
                 com.jogamp.opengl.util.packrect.Rect newLocation)

Calls TextureAtlas.moveEntry(java.awt.image.BufferedImage, com.jogamp.opengl.util.packrect.Rect, java.awt.image.BufferedImage, com.jogamp.opengl.util.packrect.Rect), casting the specified backing stores to BufferedImages.

Specified by:

move in interface com.jogamp.opengl.util.packrect.BackingStoreManager

preExpand

public boolean preExpand(com.jogamp.opengl.util.packrect.Rect cause,
                         int attemptNumber)

Returns false, indicating that the rectangle packer should just expand. When configured to do so, texture atlas evicts old elements in additionFailed if this texture atlas is full and the addition would otherwise fail.

Specified by:

preExpand in interface com.jogamp.opengl.util.packrect.BackingStoreManager