CCAtlasNode is a subclass of CCNode that implements the CCRGBAProtocol and CCTextureProtocol protocol It knows how to render a TextureAtlas object. If you are going to render a TextureAtlas consider subclassing CCAtlasNode (or a subclass of CCAtlasNode) All features from CCNode are valid, plus the following features:
creates a CCAtlasNode with an Atlas file the width and height of each item and the quantity of items to render
initializes an CCAtlasNode with an Atlas file the width and height of each item and the quantity of items to render
initializes an CCAtlasNode with a texture the width and height of each item measured in points and the quantity of items to render
updates the Atlas (indexed vertex array). Shall be overridden in subclasses
returns the used texture
sets a new texture. it will be retained
//! chars per row
//! chars per column
//! width of each char
//! height of each char