AJAX Page Loads Using MooTools Fx.Explode

Note: All credit for Fx.Explode goes to Jan Kassens.

One of the awesome pieces of code in MooTools Core Developer Jan Kassens' sandbox is his Fx.Explode functionality. When you click on any of the designated Fx.Explode elements, the elements "explode" off of the screen. Click again and they magically reappear. Don't believe me? Check out Kassens' example!

In speaking with Jan, his idea was to use this effect for page changes but never got around to it. I've completed this goal, albeit with some ugly code, but I think it's worth a look.

Kassens' MooTools Fx.Explode Class

/* created by legendary MooTools developer, Jan Kassens */
Fx.Explode = new Class({
	Extends: Fx.CSS,
	
	options: {
		grow: 0.5,
		expand: 1,
		transition: "expo:out",
		duration: 750
	},

	initialize: function(elements, options){
		this.elements = this.subject = $$(elements);
		this.parent(options);
		this.addEvent('complete', function(){
			this.clones.dispose();
			if (this.inverted) this.elements.setStyle('opacity', 1);
		}, true);
	},

	compute: function(from, to, delta){
		var now = {};
		for (var i in from){
			var iFrom = from[i], iTo = to[i], iNow = now[i] = {};
			for (var p in iFrom) iNow[p] = this.parent(iFrom[p], iTo[p], delta);
		}
		return now;
	},

	set: function(now){
		for (var i in now){
			var iNow = now[i];
			for (var p in iNow) this.render(this.clones[i], p, iNow[p], this.options.unit);
		}
		return this;
	},

	start: function(fromX, fromY, inverted){
		this.inverted = !!inverted;
		var from = {}, to = {};
		this.clones = $$(this.elements.map(function(el, i){
			var clone = el.clone();
			var coords = el.getCoordinates();
			clone.setStyles(coords).setStyle('position', 'absolute').inject(document.body);
			el.setStyle('visibility', 'hidden');
			
			var center = {
				x: coords.left + coords.width / 2,
				y: coords.top + coords.height / 2
			};
			
			var self = this;
			(function(prop, end){
				var parsed = self.prepare(clone, prop, end);
				if (self.inverted) {
					(from[i] = from[i] || {})[prop] = parsed.to;;
					(to[i] = to[i] || {})[prop] = parsed.from;
				} else {
					(from[i] = from[i] || {})[prop] = parsed.from;;
					(to[i] = to[i] || {})[prop] = parsed.to;
				}
				return arguments.callee;
			})
			('top', coords.top + (center.y - fromY) * this.options.expand - coords.height * this.options.grow / 2)
			('left', coords.left + (center.x - fromX) * this.options.expand - coords.width * this.options.grow / 2)
			('width', coords.width * (1 + this.options.grow))
			('height', coords.height * (1 + this.options.grow))
			('opacity', 0);
			
			return clone;
		}, this));
		return this.parent(from, to);
	}
});

My Usage / Example

var init = function (req) {
	var shown = true;
	var running = false;
	var explode = new Fx.Explode('#fx-contain *', {
		duration: 500,
		onComplete: function(){ running = false; }
	});
	var implode = new Fx.Explode('#fx-contain *', {
		onComplete: function(){ running = false; },
		transition: 'sine:in:out',
		duration: 500,
		grow: -1,
		expand: -.8
	});
	
	$$('#fx-contain a').each(function(el) {
		el.addEvent('click', function(e){
			e.stop();
			if (running) return;
			if (shown) explode.start(e.client.x, e.client.y);
			else implode.start(e.client.x, e.client.y, true);
			running = true;
			shown = !shown;
			req.send({
				url: el.get('href')
			});
		});
	});
};

/* making things happen */
window.addEvent('domready', function() {
	var req = new Request({
		method: 'get',
		data: {
			ajax: 1
		},
		onSuccess: function(response) {
			//fade in content
			$('fx-contain').set({
				html: response
			});
			init(req);
		}
	});
	init(req);
});

Like I said, my code isn't pretty but it works. Enjoy!