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A Keyframing, CPU Independent Animation Framework for Javascript
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README
nw.js
nw.min.js
orbit.js
orbit.min.js

README

Name: ORBIT

Description: A CPU Independent Keyframing Animation Framework for Javascript

Version: 0.2

Author: Charlotte Gore

Latest release: 18th October 2010

Notes: Uses the NW.Dom CSS3 selector engine, and the NW.Events events management engine.
	   Like jQuery, the primary Orbit object is chainable, giving access to the various methods,
	   including the key .tween() method.
	   
	   ORBIT is, whilst primarily an Animation toolkit, also contains other methods designed to allow
	   the construction of Orbit enhanced UI components and, possibly, web applications without needing 
	   a second library. This development is at the very earliest stages, however.
	   
	   

Usage: 

$orb( css3 selector )

- Returns an Orbit object containing an array of elements and exposing the methods to manipulate those elements

Chainable Methods:
	- These methods return the Orbit object, so can be chained, e.g, $orb('#hello-world').setStyle('color','#0000FF').html('<p>Hello World!</p>')

.each( function )
	- Iterate through each element in the Orbit object and execute /function/.

.setStyle ( css property, value )
	- Apply css styling directly to the element. Not animated.

.show()
	- Display elements. Not animated.

.hide()
	- Hide elements. Not animated.

.html()
	- Populated the innerHTML property of elements
	
.on( event type, function )
	- Attach an Event Listener to the elements, executing /function/ when triggered.
	
.unbind ( event type, function )
	- Remove an Event Listener from the elements.
	
	
Intrinsic Value Methods:
	- These methods return actual values and cannot be chained.
	
.measure()
	- Returns an object containing innerSize, outerSize, pagePosition, innerPosition and boxDetails, which 
	  contains objects with values for padding, margins and borders. 
	
.getMouse( event )
	- Returns a the position of the mouse 
	

The Core Tween Method:

.tween({ object });
	- returns a handle to the Tween object, which contains the following methods:
	
	.start( [{syncWith: tween handle}])
		- starts the animation from the beginning. Optional ability to pass it a handle from another tween 
		  to sync the animations together. In reality this means their start time is the same and little else.
		  
	.stop()
		- sets the 'stopAnimation' flag. This means that when the animation reaches the end it will not
		  loop again.
		  
	.goToFrame()
		- DEPRECATED - goes to the frame at step n. This no longer works as intended, and is now used
		  internally only.
		
	.goToFrameAtTime( miliseconds )
		- Used instead of goToFrame, this displays the animation at n miliseconds through the animation. If 
		  miliseconds is greater than the duration, it is assumed the animation has looped.
		  
	.getStartTime()
		- returns the startTime of the Tween object, used to help sync animations together.
		
	.getRawValuesAtFrame()
		- Not Yet Implemented. It is intended to expose the caching and precalculation engine without 
		  rendering anything, i.e, generating a single reusable path.
		  
The Object passed to the Tween method is as follows:

	{ 
		animations : array of animation objects
		[, duration : miliseconds]
		[, loop : true|false|"reverse"]
		[, callback : function]
		[, easing : "in"|"out"|"both"|"none"]
	}

The animation objects are:

	{
		property : "propertyName", 
		startValue: startValue, 
		endValue : endValue 
		[, origin : [x, y], radius : radius]
		
		or
		
		handle : tween handle
	}
	
	currently supported properties are:
	
		Standard CSS properties known to work:
		
		top, left, bottom, right
		width, height
		backgroundPosition // requires 2D startValue and endValue
		color,
		backgroundColor,
		borderColor,
		opacity
		
		Custom Properties:
		
		position // requires 2D startValue and endValue
		size // requires 2D startValue and endValue
		rotate // alias for -webkit-transform : rotate() and -moz-transform: rotate()

	startValue and endValue can be in form 
		100
		"100" 
		"100px"
		"10em"
		"100px 100px" // 2D coords, typically x and y
		"#ffffff" // RGB Hash
		0 - 360 // Degrees, for orbit animations
		
	The optional origin and radius properties are for defining an orbital animation.
	
	origin is an array of coords, x and y.
	radius is the radius of the animation in px.
	
	
	The optional handle property takes an object with a goToFrameAtTime method (the returned tween handle 
	does this). During execution of the animation, it will invoke this method. This allows tweens of differing
	durations to be run as one tween.
		
	

	


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