Jay Abbott

This Animation framework allows you to have more control over on-screen animations, or indeed anything you want to change the value of over time. For each animation you provide a closure which is called repeatedly with a progress value, and from here you can set whatever properties you want. You're not restricted to the 'animatable' properties, and you can use the helper curve classes and interpolation operators to make your code very small, clear, and concise. With the curve classes, you can construct custom curves and use them to control the motion of your animations as a single fire-and-forget call to trigger the animation, instead of chaining together secondary and tiertary animations from the completion blocks.

In addition to the triggerable animations, you can adopt the Animatable protocol in any of your classes, and add them to start receiving updates. This allows you to get constant callbacks in sync with the screen refresh, so that you can apply any motion effects you want. You can remove your Animatable so that it no longer receives updates at any time, but if you forget to remove it don't worry - the Animation framework only keeps a weak reference to it, and will automatically remove it when your instance goes away.

License: MIT

Allows associating an object or value onto any object instance using a key. Associations are maintained for the lifetime of the object that owns them.

License: MIT