   Animating the UI
  Hi all,I would like UI components in my game to be animated... eg: * When my game switches to split screen mode i want the existing viewport to gradually shrink while the second gradually grows to fill the void.* When i show text I want it to fade in and then out.etc, etc.What would be the best method for such a thing? currently I'm thinking along the lines of:1) Each UI component inherits from an AnimatibleUIElement class that has an update() method and public: targetTime,   width, targetWidth, height, targetHeight, alpha and targetAlpha (or functions to act as getters/setters for those fields)... So you could create a textbox with alpha = 0.0, targetAlpha = 1.0, targetTime = 1000(ms) and call its update method during the gameloops update; which would increment/decrement each value towards its corresponding target until it hits it?or 2) During the games update loop set the relevant value of the required object (e.g textbox.alpha) to be  = to a variable float. Have an object (say: uiAnimation) that contains a targetNumber, targetTime, a pointer to that float and an update() method that increments/decrements the value it points to over the course of uiAnimations target time. Store all those uiAnimation objects (or pointers to them) inside a vector and loop through them and call update() during the main games update method?or are there conventional ways of doing this?Cheers.   