snapsvg
Version:
JavaScript Vector Library
62 lines (53 loc) • 1.52 kB
JavaScript
/**
* Defines the Flat Surface Shader namespace for all the awesomeness to exist upon.
* @author Matthew Wagerfield
*/
FSS = {
FRONT : 0,
BACK : 1,
DOUBLE : 2,
SVGNS : 'http://www.w3.org/2000/svg'
};
/**
* @class Array
* @author Matthew Wagerfield
*/
FSS.Array = typeof Float32Array === 'function' ? Float32Array : Array;
/**
* @class Utils
* @author Matthew Wagerfield
*/
FSS.Utils = {
isNumber: function(value) {
return !isNaN(parseFloat(value)) && isFinite(value);
}
};
/**
* Request Animation Frame Polyfill.
* @author Paul Irish
* @see https://gist.github.com/paulirish/1579671
*/
(function() {
var lastTime = 0;
var vendors = ['ms', 'moz', 'webkit', 'o'];
for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
window.cancelAnimationFrame = window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
}
if (!window.requestAnimationFrame) {
window.requestAnimationFrame = function(callback, element) {
var currentTime = new Date().getTime();
var timeToCall = Math.max(0, 16 - (currentTime - lastTime));
var id = window.setTimeout(function() {
callback(currentTime + timeToCall);
}, timeToCall);
lastTime = currentTime + timeToCall;
return id;
};
}
if (!window.cancelAnimationFrame) {
window.cancelAnimationFrame = function(id) {
clearTimeout(id);
};
}
}());