Table of Contents • • Developer's Guide • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Configuration & Querying OpenGL?? • Direct Access??

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• Utility Classes • • • • • • 2D Graphics • • • • • Mapping Touch Coordinates?? • • • • • • • • • • • • • • • • • • • • • • • • • • • Perspective Camera?? • • • Utilities • • • • • • • • • • • Bounding Volumes?? • Intersection & Overlap Testing?? • Tools • • • • • Extensions • • •: cross-platform In-App-Purchasing API • • • • • • • • • • • • • • • • • • • • • • • Articles • • • • • • • • • • • Clone this wiki locally.

• • • • • • • • • • • TexturePacker In OpenGL, a texture is bound, some drawing is done, another texture is bound, more drawing is done, etc. Binding the texture is relatively expensive, so it is ideal to store many smaller images on a larger image, bind the larger texture once, then draw portions of it many times. Libgdx has a TexturePacker class which is a command line application that packs many smaller images on to larger images. It stores the locations of the smaller images so they are easily referenced by name in your application using the TextureAtlas class.

TexturePacker uses multiple packing algorithms but the most important is based on. 3ds Max 2010 Portable Скачать more. It also uses brute force, packing with numerous heuristics at various sizes and then choosing the most efficient result.

Running TexturePacker (If you prefer to pack your textures using a GUI, check this tool: ) The TexturePacker class is in the gdx-tools project. It can be run from source via Eclipse. TextureAtlas atlas; atlas = new TextureAtlas( Gdx.files.internal( 'packedimages/pack.atlas ')); AtlasRegion region = atlas.findRegion( 'imagename '); Sprite sprite = atlas.createSprite( 'otherimagename '); NinePatch patch = atlas.createPatch( 'patchimagename '); TextureAtlas reads the pack file and loads all the page images. TextureAtlas.AtlasRegions can be retrieved, which are TextureRegions that provides extra information about the packed image, such as the frame index or any whitespace that was stripped. Sprites and NinePatches can also be created. If whitespace was stripped, the created Sprite will actually be a TextureAtlas.AtlasSprite, which allows the sprite to be used (mostly) as if whitespace was never stripped.

Note that findRegion is not very fast, so the value returned should be stored rather than calling this method each frame. Also note that createSprite and createNinePatch allocate a new instance. TextureAtlas holds on to all the page textures, disposing the TextureAtlas will dispose all the page textures.

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