performance-art.fr/sites/all/modules/gui/jqplug/js/menucloud.js

(function($) {

$.fn.menucloud = function(settings)
{
	settings = $.extend({}, $.fn.menucloud.defaults, settings);
	
	$('ul', this).css({
		'position':'relative',
		'width':'100%',
		'height':'100%',
		'padding':0
	})
	
	$('li', this).css({'top':"-100px", 'left':'-100px'}).each(function(i,e){
		var $li = $(e);
		$li.css({
			// 'border':'1px solid red',
			'position':'absolute'
		});
		
		var $prt = $li.parent('ul.menu');
		// $.log('li', $li);
		// $.log('$this | width = '+$li.width()+' | height = '+$li.height());
		// $.log('$prt | width = '+$prt.width()+' | height = '+$prt.height());
		
		function _testPos(t){
			var isok = true;
			$li.siblings().each(function(j, sib){
				$sib = $(sib);
				// var pos = $sib.position();
				// $.log('pos',pos);
				var css_sib_top = $sib.css('top');
				// $.log('css_sib_top.match("/em/") = '+css_sib_top.search('em'));
				var sib_top = css_sib_top.search('em') >= 0 ? parseFloat(css_sib_top)/settings.q : parseFloat(css_sib_top);
				
				// $.log('sib_top = '+sib_top);
				// $.log('t = '+t+' | sib_top = '+sib_top);
				// $.log('Math.abs(top-sib_top) = '+Math.abs(top-sib_top));
				
				if(Math.abs(t-sib_top) < 35){ 
					isok = false;
					return false;
				};
				
			});
			
			return isok;
		};
		
		var isPosOK = false;
		var limit = 0;
		while(!isPosOK && limit < 10){
			var top = (Math.round(Math.random()*(($prt.height()-settings.margin.t-settings.margin.b)-$li.height()))+settings.margin.t);
			var left = (Math.round(Math.random()*(($prt.width()-settings.margin.l-settings.margin.r)-$li.width()))+settings.margin.l);
			isPosOK = _testPos(top);
			// $.log('isPosOK = '+isPosOK);
			limit = limit+1;
		}
		
		$li.css({
			'top':(top*settings.q)+'em',
			'left':(left*settings.q)+'em'
		});
		
		// $.log('- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ');
		
	});
	
	return this;
}

$.fn.menucloud.defaults = {
	q:0.063,
	margin : {t:0,r:0,b:0,l:0}
};


})(jQuery);