/* requires D3 + https://github.com/Caged/d3-tip */
d3.scatterplot = function() {
  function scatterplot(selection) {
    selection.each(function(d, i) {
      //options
      var data = (typeof(data) === "function" ? data(d) : d.data),
          margin = (typeof(margin) === "function" ? margin(d) : d.margin),
          axes = (typeof(axes) === "function" ? axes(d) : d.axes),
          minmax = (typeof(minmax) === "function" ? minmax(d) : d.minmax),
          size = (typeof(size) === "function" ? size(d) : d.size),
          colors = (typeof(colors) === "function" ? colors(d) : d.colors)
          
      
      // chart sizes
      var width = size['width'] - margin.left - margin.right,
          height = size['height'] - margin.top - margin.bottom;
      
      //scales
      var xScale = d3.scale.linear()
						     .domain([minmax['x']['min'], minmax['x']['max']])
						     .range([margin.left, margin.left+width])

      var yScale = d3.scale.linear()
						     .domain([minmax['y']['min'], minmax['y']['max']])
						     .range([margin.top + height, margin.top])

      var rScale = d3.scale.linear()
						     .domain([minmax['r']['min'],minmax['r']['max']])
						     .range([minmax['rrange']['min'],minmax['rrange']['max']]);

      var element = d3.select(this);

        if (d.i != d.j) {

          //axes
          var xAxis = d3.svg.axis()
            .scale(xScale)
            .orient("bottom");
            //.ticks(5);
            //.tickSize(16, 0);  
          var yAxis = d3.svg.axis()
            .scale(yScale)
            .orient("left");
            //.ticks(5); 
          


          
		    //Create X axis
          /*element.append("g")
			    .attr("class", "axis x-axis")
			    .attr("transform", "translate("+margin.left+"," + margin.top + ")")
			    .call(xAxis);
		
		    //Create Y axis
          element.append("g")
			    .attr("class", "axis y-axis")
			    .attr("transform", "translate(" + width + ",0)")
			    .call(yAxis);*/
          
          element.append("rect")
            .attr("class", "frame")
            .attr("x", xScale(0))
            .attr("y", yScale(1))
            .attr("width", xScale(1) - xScale(0))
            .attr("height", yScale(0) - yScale(1));
          
          element.append("rect")
            .attr("x", xScale(0))
            .attr("y", yScale(1))
            .attr("width", xScale(0.33) - xScale(0))
            .attr("height", yScale(0) - yScale(1))
            .attr("fill-opacity", 0.5)
            .attr("fill",colors.x);  

          element.append("rect")
            .attr("x", xScale(0))
            .attr("y", yScale(0.33))
            .attr("width", xScale(1) - xScale(0))
            .attr("height", yScale(0) - yScale(0.33))
            .attr("fill-opacity", 0.5)
            .attr('fill',colors.y); 

          element.selectAll("circle")
            .data(data)
		       .enter()
		     .append("circle")
		       .attr("cx", function(d) {
		       		return xScale(d.x);
		       })
		       .attr("cy", function(d) {
		       		return yScale(d.y);
		       })
		       .attr("r", function(d) {
		            if (typeof(d.r) !== 'undefined')
		       		    return rScale(d.r);
		       		else return 1;
		       })
		       .attr("class", function(d) {
		       		if (typeof(d['class'] != 'undefined')) return d['class'];
		       		else return 'circle';
		       })
		       //.on('mouseover', tip.show)
               //.on('mouseout', tip.hide);
	
	  } else {
	    element.append("text")
	        .attr("x",xScale(0.2))
	        .attr("y",yScale(0.6))
	        .attr("dy","1em")
	        .text(d.name.x);
	  }
	
      //axis labels
	  /*element.append("text")
			.attr("class", "x-label label")
			.attr("text-anchor", "end")
			.attr("x", width)
			.attr("y", height-5)
			.text(axes['labels']['x']);
	  element.append("text")
			.attr("class", "y label")
			.attr("text-anchor", "end")
			.attr("y", 5)
			.attr("x", 0)
			.attr("dy", ".75em")
			.attr("transform", "rotate(-90)")
			.text(axes['labels']['y']);*/
			 
		
    });
  }
  scatterplot.data = function(value) {
    if (!arguments.length) return value;
    data = value;
    return scatterplot;
  };  
  scatterplot.margin = function(value) {
    if (!arguments.length) return value;
    margin = value;
    return scatterplot;
  };
  scatterplot.axes = function(value) {
    if (!arguments.length) return value;
    axes = value;
    return scatterplot;
  };
  scatterplot.minmax = function(value) {
    if (!arguments.length) return value;
    minmax = value;
    return scatterplot;
  };
  scatterplot.size = function(value) {
    if (!arguments.length) return value;
    size = value;
    return scatterplot;
  };
  
  return scatterplot;
}