TextureAtlasBuilder Class Reference

#import <TextureAtlas.h>

List of all members.

Public Member Functions
(id)	- initWithTexSizeX:texSizeY:
(WhirlyGlobe::SimpleIdentity)	- addImage:
(void)	- processIntoScene:texIDs:
Protected Attributes
unsigned int	texSizeX
	Texture sizes we're aiming for.
unsigned int	texSizeY
unsigned int	cellSizeX
	Size of the cells used for places images in the texture atlases.
unsigned int	cellSizeY
NSMutableArray *	atlases
	Texture atlases built so far.
std::vector < WhirlyGlobe::SubTexture >	mappings
	Mappings from the various images to the texture atlases.

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Detailed Description

Texture Atlas Builder This object is used to build up a list of texture atlases which will be used to speed up rendering related to textures. You give this object UIImages and it will sort them into appropriate texture atlases. In return you get an ID which you can use to uniquely identify your texture subset and a mapping into the target texture atlas. These IDs can be used in place of texture IDs with most layers. Lastly, you'll need to add all the textures and sub texture mappings into the scene.

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Member Function Documentation

- WhirlyGlobe:

(UIImage *)

image

Add the given image to a texture atlas. You'll get a sub texture mapping back. Check the ID of SubTexture. It will be EmptyIdentity on failure.

- (id) initWithTexSizeX:		(unsigned int)	texSizeX
texSizeY:		(unsigned int)	texSizeY

Construct with the size of the texture atlases to be produced. Must be a power of two.

- (void) processIntoScene:		(WhirlyGlobe::GlobeScene *)	scene
texIDs:		(std::set< WhirlyGlobe::SimpleIdentity > *)	texIDs

Runs through the altases created and adds the resulting textures to the scene. Also puts the sub texture mappings in to the scene for use on the layer side.

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

• /Users/sjg/iPhone/WhirlyGlobe/WhirlyGlobeSrc/WhirlyGlobeLib/include/TextureAtlas.h