/*
* D3 Gauge Control.
* Encapsulated example from: http://bl.ocks.org/NPashaP/59c2c7483fb61070486835d15c807941
* Licence: GNU General Public License, version 3.
* Authors: Pasha, Jovan Popovic
**************************************************************************/

var GraphVizGauge = function (target, options) {

    options = options || {from:0, to: 10};
    this.options = options;

    var svg = d3.select(target);
    try{
        options.size = svg[0][0].clientWidth || 600;
    } catch (ex) {options.size = 600; }

    var g = svg.append("g").attr("transform", "translate("+options.size/2+","+options.size/2+")");
    var domain = [options.from || 0, options.to || 10];

    var gg = viz.gg()
      .domain(domain)
      .ticks(d3.range(domain[0], domain[1] + 1, options.tick || 1))
      .outerRadius(options.outerRadius || options.size / 2)
      .innerRadius(options.innerRadius || 30)
      .value(0)
      .duration(options.duration || 1000);

    gg.defs(svg);
    g.call(gg);

    this.Data = function (data) {
        gg.setNeedle(Math.min(data, options.to));
    }
}