3D Donut

.block

license: gpl-3.0

Donut3D.js

!function(){
	var Donut3D={};
	
	function pieTop(d, rx, ry, ir ){
		if(d.endAngle - d.startAngle == 0 ) return "M 0 0";
		var sx = rx*Math.cos(d.startAngle),
			sy = ry*Math.sin(d.startAngle),
			ex = rx*Math.cos(d.endAngle),
			ey = ry*Math.sin(d.endAngle);
			
		var ret =[];
		ret.push("M",sx,sy,"A",rx,ry,"0",(d.endAngle-d.startAngle > Math.PI? 1: 0),"1",ex,ey,"L",ir*ex,ir*ey);
		ret.push("A",ir*rx,ir*ry,"0",(d.endAngle-d.startAngle > Math.PI? 1: 0), "0",ir*sx,ir*sy,"z");
		return ret.join(" ");
	}

	function pieOuter(d, rx, ry, h ){
		var startAngle = (d.startAngle > Math.PI ? Math.PI : d.startAngle);
		var endAngle = (d.endAngle > Math.PI ? Math.PI : d.endAngle);
		
		var sx = rx*Math.cos(startAngle),
			sy = ry*Math.sin(startAngle),
			ex = rx*Math.cos(endAngle),
			ey = ry*Math.sin(endAngle);
			
			var ret =[];
			ret.push("M",sx,h+sy,"A",rx,ry,"0 0 1",ex,h+ey,"L",ex,ey,"A",rx,ry,"0 0 0",sx,sy,"z");
			return ret.join(" ");
	}

	function pieInner(d, rx, ry, h, ir ){
		var startAngle = (d.startAngle < Math.PI ? Math.PI : d.startAngle);
		var endAngle = (d.endAngle < Math.PI ? Math.PI : d.endAngle);
		
		var sx = ir*rx*Math.cos(startAngle),
			sy = ir*ry*Math.sin(startAngle),
			ex = ir*rx*Math.cos(endAngle),
			ey = ir*ry*Math.sin(endAngle);

			var ret =[];
			ret.push("M",sx, sy,"A",ir*rx,ir*ry,"0 0 1",ex,ey, "L",ex,h+ey,"A",ir*rx, ir*ry,"0 0 0",sx,h+sy,"z");
			return ret.join(" ");
	}

	function getPercent(d){
		return (d.endAngle-d.startAngle > 0.2 ? 
				Math.round(1000*(d.endAngle-d.startAngle)/(Math.PI*2))/10+'%' : '');
	}	
	
	Donut3D.transition = function(id, data, rx, ry, h, ir){
		function arcTweenInner(a) {
		  var i = d3.interpolate(this._current, a);
		  this._current = i(0);
		  return function(t) { return pieInner(i(t), rx+0.5, ry+0.5, h, ir);  };
		}
		function arcTweenTop(a) {
		  var i = d3.interpolate(this._current, a);
		  this._current = i(0);
		  return function(t) { return pieTop(i(t), rx, ry, ir);  };
		}
		function arcTweenOuter(a) {
		  var i = d3.interpolate(this._current, a);
		  this._current = i(0);
		  return function(t) { return pieOuter(i(t), rx-.5, ry-.5, h);  };
		}
		function textTweenX(a) {
		  var i = d3.interpolate(this._current, a);
		  this._current = i(0);
		  return function(t) { return 0.6*rx*Math.cos(0.5*(i(t).startAngle+i(t).endAngle));  };
		}
		function textTweenY(a) {
		  var i = d3.interpolate(this._current, a);
		  this._current = i(0);
		  return function(t) { return 0.6*rx*Math.sin(0.5*(i(t).startAngle+i(t).endAngle));  };
		}
		
		var _data = d3.layout.pie().sort(null).value(function(d) {return d.value;})(data);
		
		d3.select("#"+id).selectAll(".innerSlice").data(_data)
			.transition().duration(750).attrTween("d", arcTweenInner); 
			
		d3.select("#"+id).selectAll(".topSlice").data(_data)
			.transition().duration(750).attrTween("d", arcTweenTop); 
			
		d3.select("#"+id).selectAll(".outerSlice").data(_data)
			.transition().duration(750).attrTween("d", arcTweenOuter); 	
			
		d3.select("#"+id).selectAll(".percent").data(_data).transition().duration(750)
			.attrTween("x",textTweenX).attrTween("y",textTweenY).text(getPercent); 	
	}
	
	Donut3D.draw=function(id, data, x /*center x*/, y/*center y*/, 
			rx/*radius x*/, ry/*radius y*/, h/*height*/, ir/*inner radius*/){
	
		var _data = d3.layout.pie().sort(null).value(function(d) {return d.value;})(data);
		
		var slices = d3.select("#"+id).append("g").attr("transform", "translate(" + x + "," + y + ")")
			.attr("class", "slices");
			
		slices.selectAll(".innerSlice").data(_data).enter().append("path").attr("class", "innerSlice")
			.style("fill", function(d) { return d3.hsl(d.data.color).darker(0.7); })
			.attr("d",function(d){ return pieInner(d, rx+0.5,ry+0.5, h, ir);})
			.each(function(d){this._current=d;});
		
		slices.selectAll(".topSlice").data(_data).enter().append("path").attr("class", "topSlice")
			.style("fill", function(d) { return d.data.color; })
			.style("stroke", function(d) { return d.data.color; })
			.attr("d",function(d){ return pieTop(d, rx, ry, ir);})
			.each(function(d){this._current=d;});
		
		slices.selectAll(".outerSlice").data(_data).enter().append("path").attr("class", "outerSlice")
			.style("fill", function(d) { return d3.hsl(d.data.color).darker(0.7); })
			.attr("d",function(d){ return pieOuter(d, rx-.5,ry-.5, h);})
			.each(function(d){this._current=d;});

		slices.selectAll(".percent").data(_data).enter().append("text").attr("class", "percent")
			.attr("x",function(d){ return 0.6*rx*Math.cos(0.5*(d.startAngle+d.endAngle));})
			.attr("y",function(d){ return 0.6*ry*Math.sin(0.5*(d.startAngle+d.endAngle));})
			.text(getPercent).each(function(d){this._current=d;});				
	}
	
	this.Donut3D = Donut3D;
}();

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  width: 960px;
  height: 500px;
  position: relative;
}
path.slice{
	stroke-width:2px;
}
polyline{
	opacity: .3;
	stroke: black;
	stroke-width: 2px;
	fill: none;
} 
svg text.percent{
	fill:white;
	text-anchor:middle;
	font-size:12px;
}

</style>
<body>
<button onClick="changeData()">Change Data</button>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="Donut3D.js"></script>
<script>

var salesData=[
	{label:"Basic", color:"#3366CC"},
	{label:"Plus", color:"#DC3912"},
	{label:"Lite", color:"#FF9900"},
	{label:"Elite", color:"#109618"},
	{label:"Delux", color:"#990099"}
];

var svg = d3.select("body").append("svg").attr("width",700).attr("height",300);

svg.append("g").attr("id","salesDonut");
svg.append("g").attr("id","quotesDonut");

Donut3D.draw("salesDonut", randomData(), 150, 150, 130, 100, 30, 0.4);
Donut3D.draw("quotesDonut", randomData(), 450, 150, 130, 100, 30, 0);
	
function changeData(){
	Donut3D.transition("salesDonut", randomData(), 130, 100, 30, 0.4);
	Donut3D.transition("quotesDonut", randomData(), 130, 100, 30, 0);
}

function randomData(){
	return salesData.map(function(d){ 
		return {label:d.label, value:1000*Math.random(), color:d.color};});
}
</script>
</body>

thumbnail.png

Where is the label in this graph??? how can identify which % is of which label???