/**
 * jCloud
 * (C) 2011 Sawanna Team (http://sawanna.org)
 */

jQuery.fn.jcloud=function(settings)
{
jCloud={
	tags: new Array(),
	container_id: 'jcloud',
	radius: 100,
	size: 20,
	areal: 180,
	iterX: 0,
	iterY: 0,
	iterx: 1,
	itery: 1,
	step: 4,
	flats: 1,
	speed: 100,
	start_speed: 1,
	timer: 0,
	clock: 10,
	stop: true,
	splitX: 0,
	splitY: 0,
	colors: new Array(),
	init: function (elem,settings) {
		jQuery(elem).css('display','none');
		var i=0;
		jQuery(elem).find('li').each(function(){
			jCloud.tags[i]=jQuery(this).html();
			i++;
		});
		if (typeof(settings) != 'undefined')
		{
			try {
				if (typeof(settings.container_id) != 'undefined')
				{
					this.container_id=settings.container_id;
				}
				if (typeof(settings.radius) != 'undefined')
				{
					this.radius=settings.radius;
				}
				if (typeof(settings.size) != 'undefined')
				{
					this.size=settings.size;
				}
				if (typeof(settings.areal) != 'undefined')
				{
					this.areal=settings.areal;
				}
				if (typeof(settings.step) != 'undefined')
				{
					this.step=settings.step;
				}
				if (typeof(settings.flats) != 'undefined')
				{
					this.flats=settings.flats;
				}
				if (typeof(settings.speed) != 'undefined')
				{
					if (settings.speed < 1)
					{
						settings.speed=1;
					}
					this.speed=settings.speed;
				}
				if (typeof(settings.clock) != 'undefined')
				{
					this.clock=settings.clock;
				}
				if (typeof(settings.splitX) != 'undefined')
				{
					if (Math.abs(settings.splitX) < 2*this.radius)
					{
						this.splitX=settings.splitX;
					}
				}
				if (typeof(settings.splitY) != 'undefined')
				{
					if (Math.abs(settings.splitY) < 2*this.radius)
					{
						this.splitY=settings.splitY;
					}
				}
				if (typeof(settings.colors) != 'undefined' && settings.colors instanceof Array)
				{
					this.colors=settings.colors;
				}
			} catch (e) {}
		}
		jQuery(elem).replaceWith('<div id="'+this.container_id+'"></div>');
		jQuery('#'+this.container_id).css({
					'position':'relative',
					'width':this.radius*2,
					'height':this.radius*2,
					'overflow':'hidden',
					'padding': '0px'
					});
		jQuery('#'+this.container_id).mousemove(function(e){
			var centerX=jQuery(this).offset().left+jCloud.radius;
			var centerY=jQuery(this).offset().top+jCloud.radius;
			jCloud.speed=jCloud.start_speed;
			jCloud.iterx=(centerX-e.pageX)/jCloud.radius;
			jCloud.itery=(centerY-e.pageY)/jCloud.radius;
		});
		jQuery('#'+this.container_id).mouseover(function()
		{
			jCloud.stop=false;
		});
		jQuery('#'+this.container_id).mouseout(function()
		{
			jCloud.stop=true;
		});
		jQuery('body').append('<div id="jcloud-buffer"></div>');
		jQuery('#jcloud-buffer').css({
					'display': 'none',
					'padding': '0px',
					'white-space': 'nowrap'
				});
	},
	render: function() {
		jQuery('#'+this.container_id).empty();
		this.start_speed=this.speed;
		for (var j in this.tags)
		{
			this.draw(j);
		}
		this.cloud();
	},
	draw: function(id) {
		jQuery('#jcloud-buffer').html('<div class="jtag" id="jtag-'+id+'">'+this.tags[id]+'</div>');
		var taghtml=jQuery('#jcloud-buffer').html();
		var width=jQuery('#jcloud-buffer').width();
		var height=jQuery('#jcloud-buffer').height();
		if(taghtml.indexOf("unction")==-1) jQuery('#'+this.container_id).append(taghtml);
		jQuery('#jtag-'+id).attr('width',width);
		jQuery('#jtag-'+id).attr('height',height);
	},
	cloud: function(iter,flat_iter,update) {
		var count=this.tags.length;
		var per_flat=Math.ceil(count/this.flats);
		var delta=Math.round(360/per_flat);
		var deg=0;
		var flat_deg=0;
		if (typeof(iter) != 'undefined')
		{
			deg=Math.floor(iter);
		}
		if (typeof(flat_iter) != 'undefined')
		{
			flat_deg=Math.floor(flat_iter);
		}
		var flat_offset=Math.floor(this.areal/(this.flats+1))/2+flat_deg;
		var flat_delta=Math.floor(this.areal/this.flats);
		var flat_co=0;
		for (var j in this.tags)
		{
			this.pos(deg,j,parseInt(jQuery('#jtag-'+j).attr('width')),parseInt(jQuery('#jtag-'+j).attr('height')),flat_offset,update);
			deg+=delta;
			flat_co++;
			if (flat_co>=per_flat)
			{
				flat_offset+=flat_delta;
				flat_co=0;
				deg+=flat_delta;
			}
		}
	},
	pos: function(degree,id,width,height,offset,update) {
		var radian=degree*Math.PI/180;
		var ell_offset=offset*Math.PI/180;
		var size_offset=0;
		var size=this.size+size_offset;
		var X=this.radius+Math.sin(radian)*this.radius*Math.cos(ell_offset)-width/2;
		var Y=this.radius-Math.cos(radian)*this.radius-height/2;
		size=(1+Math.cos(radian-1.57)*Math.sin(ell_offset))*size/2;
		if (size < 1)
		{
			size=1;
		}
		if (typeof(update) == 'undefined' || update==false)
		{
			if (this.colors.length > 0)
			{
				for (var i in this.colors)
				{
					if ((parseInt(id)+1) % (this.colors.length-i) == 0)
					{
						//jQuery('#jtag-'+id).css('color',this.colors[this.colors.length-i-1]);
						//jQuery('#jtag-'+id).children('a').css('color',this.colors[this.colors.length-i-1]);
						jQuery('#jtag-'+id).attr('style','color:'+this.colors[this.colors.length-i-1]+' !important');
						jQuery('#jtag-'+id).children('a').attr('style','color:'+this.colors[this.colors.length-i-1]+' !important');
						break;
					}
				}
			}
			jQuery('#jtag-'+id).css({
				'position':'absolute',
				'white-space': 'nowrap',
				'font-weight': 'normal'
			});
		}
		var opacity=1;
		opacity=(1+Math.cos(radian-1.57)*Math.sin(ell_offset))*opacity/2;
		if (opacity<.5)
		{
			opacity=.5;
		}
		if (this.splitX)
		{
			var offsetX=parseInt(this.splitX);
			if (id%2==0)
			{
				X-=offsetX;
			} else
			{
				X+=offsetX;
			}
		}
		if (this.splitY)
		{
			var offsetY=parseInt(this.splitY);
			if (id%2==0)
			{
				Y-=offsetY;
			} else
			{
				Y+=offsetY;
			}
		}
		jQuery('#jtag-'+id).css({
				'left':Math.round(X),
				'top':Math.round(Y),
				'font-size':Math.floor(size)+'px',
				'opacity': opacity
			});
	},
	update: function() {
		this.timer++;
		var interval=Math.floor(5/jCloud.speed);
		if (this.timer < interval)
		{
			return;
		}
		if (this.stop)
		{
			this.speed=this.speed-(this.speed*.1);
		}
		this.timer=0;
		if (this.iterX >= 360)
		{
			this.iterX=360-this.iterX;
		}
		if (this.iterY >= 360)
		{
			this.iterY=360-this.iterY;
		}
		this.iterX+=this.iterx;
		this.iterY+=this.itery;
		this.cloud(this.iterY,this.iterX,true);
	}
}
jCloud.init(jQuery(this),settings);
jCloud.render();
jCloudInterval=window.setInterval("jCloud.update()",jCloud.clock);
}