Glossary

• animation  

  Animation is a visual technique that provides the illusion of motion by displaying a collection of images in rapid sequence.



• animation proxy  

  An animation proxy “stands in” for an object and provides animation capabilities without significantly impacting the original objects API.



• basic animation  

  A simple animation from a start value to a target value.



• Core Image  

  The framework that provides image processing filters used to process still and video images.



• duration  

  The length of time, in seconds, it takes for an animation to complete.



• keyframe animation  

  An animation that specifies an array of values that an animation uses as sequential targets.



• interpolation  

  The calculation of intermediate values relative to known beginning and ending values.



• layer-backed view  

  An instance of an NSView object that uses a Core Animation layer to cache its drawing content. The view is responsible for managing the layer tree, the developer should not manipulate the layer tree directly.



• layer-hosting view  

  An instance of an NSView object that hosts a Core Animation layer tree. The developer is responsible for managing the layer tree directly.



• OpenGL  

  An open source graphics library. For more information see http://www.opengl.org/.



• pacing  

  The distribution of the interpolated values of an animation across the duration of the animation.



• transition animation  

  An animation that uses a Core Image filter to apply a visual effect to an animation object being displayed or hidden.