Apple patent involves graphic animation frameworks
TweetFollow Us on Twitter

Apple patent involves graphic animation frameworks


An Apple patent (number 8228339) for a framework for graphics animation and compositing operations has appeared at the U.S. Patent & Trademark Office.

The patent involves a graphics animation and compositing operations framework has a layer tree for interfacing with the application and a render tree for interfacing with a render engine. Layers in the layer tree can be content, windows, views, video, images, text, media, or other types of objects for an application's user interface. The application commits state changes to the layers of the layer tree. The application does not need to include explicit code for animating the changes to the layers.

Instead, an animation is determined for animating the change in state by the framework which can define a set of predetermined animations based on motion, visibility, and transition. The determined animation is explicitly applied to the affected layers in the render tree. A render engine renders from the render tree into a frame buffer. Portions of the render tree changing relative to prior versions can be tracked to improve resource management.

Here's Apple's summary of the invention: "A framework for performing graphics animation and compositing operations is disclosed. The framework is used as part of rendering process to render a user interface of an application for display on a computer system. The framework is divided into two processes. A layer tree process interfaces with the application, and a render tree process interfaces with a render engine.

"The layer tree process has a first data structure or layer tree that contains object or layers associated with the user interface of the application. The layers can be content, windows, views, video, images, text, media, or any other type of object for a user interface of an application. The render tree process is separate from the layer tree process and does not interface with the application. The render tree process has a second data structure or render tree that contains object or layers associated with the layer tree. The render engine renders from the render tree.

When the application changes or is manipulated to change a layer of the user interface (e.g., a user moves a layer from a first position to a second position in a window of the user interface), the layer tree process receives the changes from the application and implements the changes directly to the layer tree. The changes from the application change the state of one or more layers in the layer tree. For example, if a layer has been moved in the application, then attributes describing the position of the affected layer in the layer tree will change.

"From the change in state of the affected layer in the layer tree, an animation and compositing process independent from the application determines what animation to use to animate the change of the affected layer. The animation and compositing process then implements the determined animation on the affected layer of the render tree. Then, the render engine renders the layers in the render tree into a frame buffer of the computer system.

"In one technique to improve resource usage, the framework can focus on dirty regions of the render tree when rendering. A "dirty region" is one or more layers or objects of the render tree that have changed relative to their immediate prior versions. For example, the dirty regions can be indicated by change objects added to the associated layers of the render tree that have been changed relative to their immediately prior version.

"The change objects are updated at each transaction of rendering the render tree. During rendering, the render engine renders only those layers that have changed relative to their immediately prior version.

"In another technique to improve resource usage, user interface information from an application is stored to a first buffer. A buffer handler receives a first update region of the user interface information from the application. In response, the buffer handler stores the user interface information from the first buffer into a second buffer except for the first update region.

"The render engine renders from the second buffer for display on the computer system, and the buffer handler marks the first buffer as purgeable. During subsequent processing, the buffer handler determines whether the first buffer has been reclaimed in response to receiving a second update region from the application. If the first buffer has not been reclaimed, buffer handler can use the first buffer again."

The inventors are Ralph Brunner, John Harper and Peter N. Graffagnino.

Apple has also been granted two patents (number 8229889 and 8229913) for systems and methods for managing data, such as metadata, one patent (number 8229211) for techniques for differentially enhancing selected areas within a digital image, and one (number 8230242) for accessory power management.

 
AAPL
$100.57
Apple Inc.
+0.04
GOOG
$584.49
Google Inc.
-2.37
MSFT
$44.95
Microsoft Corpora
-0.38
MacNews Search:
Community Search:

Latest Forum Discussions

See All
view counter

view counter
view counter
view counter
view counter
view counter
view counter

Cubic Castles Review
Cubic Castles Review By Rob Thomas on August 20th, 2014 Our Rating: :: CASTLE CRAFTINGiPad Only App - Designed for the iPad Some ridiculously frustrating camera issues aside, Cubic Castles is a pretty neat, voxel-based crafting game that sports serious future potential.   | Read more »
Space Colors – Tips, Tricks, Strategies,...
Hello Cadets: Want to know what we thought about this hectic space combat/roguelike? Check out our Space Colors review! Space Colors is a cool shooter/roguelike from Team Chaos. You travel from planet to planet across a huge galaxy and complete a variety of missions. One day, you may pick up a benign space crate. On another day, you may be asked... | Read more »
Tap Sports Baseball – Tips, Tricks, and...
Tap Sports Baseball is a pretty simple game to learn, but that doesn’t mean it’s an easy game to master, by any means. To start your batting career off well, we thought we’d give you the heads up on some handy tips and tricks. Hey Batter-Batter: Curious to see what we made of this whole “tap to bat” management sim? Check out our Tap Sports... | Read more »
Tap Sports Baseball Review
Tap Sports Baseball Review By Jennifer Allen on August 20th, 2014 Our Rating: :: LET'S PLAY BALLUniversal App - Designed for iPhone and iPad Tap Sports Baseball is briefly fun but lacks some important features.   | Read more »
Earn to Die 2 Set to Drive in to the App...
Earn to Die 2 Set to Drive in to the App Store Later This Year Posted by Ellis Spice on August 20th, 2014 [ permalink ] Not Doppler has announced that Earn to Die 2, a sequel to their successful game | Read more »
Frontier Heroes Review
Frontier Heroes Review By Andrew Fisher on August 20th, 2014 Our Rating: :: BLAZES NO TRAILSUniversal App - Designed for iPhone and iPad Despite awesome visuals and great music, Frontier Heroes just doesn’t quite deliver enough fun with its history lesson.   | Read more »
Echo Prime is Now on Sale for $0.99
Echo Prime is Now on Sale for $0.99 Posted by Jessica Fisher on August 20th, 2014 [ permalink ] Universal App - Designed for iPhone and iPad | Read more »
Star Realms Review
Star Realms Review By Andrew Fisher on August 20th, 2014 Our Rating: :: A STAR IS BORNUniversal App - Designed for iPhone and iPad Star Realms is an excellent adaptation of an outstanding deck-builder. With great visuals and an effective presentation, Star Realms is awesome.   | Read more »
This. Is. SPRINGFIELD! War comes to The...
This. Is. SPRINGFIELD! | Read more »
One Tap RPG Review
One Tap RPG Review By Campbell Bird on August 20th, 2014 Our Rating: :: DUNGEON SLIDERUniversal App - Designed for iPhone and iPad This casual arcade game introduces some very light rpg elements into its fantasy-themed pachinko gameplay.   | Read more »
All contents are Copyright 1984-2010 by Xplain Corporation. All rights reserved. Theme designed by Icreon.