/*=========================================================================================

    File Name: line.js

    Description: D3 simple line chart

    ----------------------------------------------------------------------------------------

    Item Name: Modern Admin - Clean Bootstrap 4 Dashboard HTML Template

    Author: PIXINVENT

    Author URL: http://www.themeforest.net/user/pixinvent

==========================================================================================*/



// Line chart

// ------------------------------

$(window).on("load", function(){



    var ele = d3.select("#sunburst-partition"),

    width = ele.node().getBoundingClientRect().width,

    height = 400,

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



    // Color

    var color = d3.scale.ordinal()

        .range(["#99B898", "#FECEA8", "#FF847C", "#E84A5F", "#C06C84", "#6C5B7B", "#355C7D"]);



    var svg = ele.append("svg")

        .attr("width", width)

        .attr("height", height)

      .append("g")

        .attr("transform", "translate(" + width / 2 + "," + height * .52 + ")");



    var partition = d3.layout.partition()

        .sort(null)

        .size([2 * Math.PI, radius * radius])

        .value(function(d) { return 1; });



    var arc = d3.svg.arc()

        .startAngle(function(d) { return d.x; })

        .endAngle(function(d) { return d.x + d.dx; })

        .innerRadius(function(d) { return Math.sqrt(d.y); })

        .outerRadius(function(d) { return Math.sqrt(d.y + d.dy); });



    d3.json("../../../app-assets/data/d3/circle/flare.json", function(error, root) {

      if (error) throw error;



      var path = svg.datum(root).selectAll("path")

          .data(partition.nodes)

        .enter().append("path")

          .attr("display", function(d) { return d.depth ? null : "none"; }) // hide inner ring

          .attr("d", arc)

          .style("stroke", "#fff")

          .style("fill", function(d) { return color((d.children ? d : d.parent).name); })

          .style("fill-rule", "evenodd")

          .each(stash);



      d3.selectAll("input").on("change", function change() {

        var value = this.value === "count"

            ? function() { return 1; }

            : function(d) { return d.size; };



        path

            .data(partition.value(value).nodes)

          .transition()

            .duration(1500)

            .attrTween("d", arcTween);

      });

    });



    // Stash the old values for transition.

    function stash(d) {

      d.x0 = d.x;

      d.dx0 = d.dx;

    }



    // Interpolate the arcs in data space.

    function arcTween(a) {

      var i = d3.interpolate({x: a.x0, dx: a.dx0}, a);

      return function(t) {

        var b = i(t);

        a.x0 = b.x;

        a.dx0 = b.dx;

        return arc(b);

      };

    }



    d3.select(self.frameElement).style("height", height + "px");

});