var width = 200,
    height = 200,
    radius = Math.min(width, height) / 2;

var color = d3.scale.ordinal()
    .range(["#3075CA", "#406A9D", "#ABBBD9"]);


var arc = d3.svg.arc()
    .outerRadius(radius - 10)
    .innerRadius(0);

var pie = d3.layout.pie()
    .sort(null)
    .value(function(d) { return d.ilosc; });

var svg = d3.select("#chart").append("svg")
    .attr("width", width)
    .attr("height", height)
    .append("g")
    .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

d3.csv("data.php", function(error, data) {
var total = d3.sum(data, function(d){return d.ilosc;});
    
  data.forEach(function(d) {
    d.ilosc = +d.ilosc;
  });

  var g = svg.selectAll(".arc")
      .data(pie(data))
      .enter().append("g")
      .attr("render-order", "-1")
      .attr("class", "arc");

  g.append("path")
      .attr("d", arc)
      .style("fill", function(d) { return color(d.data.narzedzie); });

  g.append("text")
      .attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")"; })
      .attr("dy", ".35em")
      .style("text-anchor", "middle")
      .attr("render-order", "1")
      .text(function(d) { return d.data.ilosc + "; " + d3.round(100* d.data.ilosc / total, 0) + "%"; });

});