js/jquery.fireworks.js

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/*
Adapted from http://jsfiddle.net/dtrooper/AceJJ/

TODO:
 * Try to get rid of ghosting
 * See if anything can be made more efficient
 * Make the canvas fit in the z-order
*/

(function( $ ) {
    var MAX_ROCKETS = 5,
        MAX_PARTICLES = 500;

    var FUNCTIONS = {
        'init': function(element) {
            var jqe = $(element);

            // Check this element isn't already inited
            if (jqe.data('fireworks_data') !== undefined) {
                console.log('Looks like this element is already inited!');
                return;
            }

            // Setup fireworks on this element
            var canvas = document.createElement('canvas'),
                canvas_buffer = document.createElement('canvas'),
                data = {
                    'element': element,
                    'canvas': canvas,
                    'context': canvas.getContext('2d'),
                    'canvas_buffer': canvas_buffer,
                    'context_buffer': canvas_buffer.getContext('2d'),
                    'particles': [],
                    'rockets': []
                };

            // Add & position the canvas
            if (jqe.css('position') === 'static') {
                element.style.position = 'relative';
            }
            element.appendChild(canvas);
            canvas.style.position = 'absolute';
            canvas.style.top = '0px';
            canvas.style.bottom = '0px';
            canvas.style.left = '0px';
            canvas.style.right = '0px';

            // Kickoff the loops
            data.interval = setInterval(loop.bind(this, data), 1000 / 50);

            // Save the data for later
            jqe.data('fireworks_data', data);
        },
        'destroy': function(element) {
            var jqe = $(element);

            // Check this element isn't already inited
            if (jqe.data('fireworks_data') === undefined) {
                console.log('Looks like this element is not yet inited!');
                return;