Anim-It

Animation Framework for TI-Nspire Lua

What is it ?

Anim-It is an Animation API for TI-Nspire Lua that let you animate properties of objects over time by simply call object:Animate({property:target_value, ...}, milliseconds, callback). If you're used to jQuery, you'll see in Anim-It some identical patterns.

How does it work ?

Anim-It is composed of 2 main parts :

• The Scheduler, located in timer.lua, gives a quantum to each active animation. It thus needs to be called in the event on.timer with timer.update().

• The Object base class, located in object.lua, whom each animated object needs to inherit from.

How I can use it ?

Follow these simple rules :

1. Add object.lua and timer.lua to your project or sources.

2. In your event on.timer, add a call to timer.update(). It is also recommended to call platform.window:invalidate(). By default, timer.update stops the Lua timer ; If you don't wan't that, use timer.update(true).

3. Make your classes you want to animate inherit from Object :

   AnimatedRectangle = class(Object)

4. Call Object constructor with the properties you wish to animate :

   function AnimatedRectangle:init(x, y, w, h)
         Object.init(self, {x = x, y = y})
         self.w, self.h = w, h
   end

5. Animate it !

   local my = AnimatedRectangle(10, 20, 30, 40)
   my:Animate({x = 20}, 100)
     :Animate({x = 200, y = 200}, 100)
     :Delay(300)
     :Animate({x = 10, y = 20}, 200,
       function(self)
         print("The end !")
       end)

## Projects using Anim-It

* [EEPro-for-Nspire](https://github.com/adriweb/EEPro-for-Nspire)
* [2048](http://ti-pla.net/a42651)