just another inlet to tributary

config.json

{"endpoint":"","display":"svg","public":true,"require":[],"tab":"edit","display_percent":0.8838031909057,"play":false,"loop":false,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01}

inlet.js

var w = 900, h = 600;

var r = 2, rStep = 0.07, 
    cr = 10, crStep = 1, n = 1000, 
    step = (40*Math.PI)/n, angle = 0;

var newColor = function(d) {
				return 'rgb(' + Math.floor(255 * Math.random()) +
                   ', ' + Math.floor(255 * Math.random()) +
                   ', ' + Math.floor(255 * Math.random()) + ')';
				}

var visArea = d3.select("svg")
    .attr("width", w)
    .attr("height", h);


for (var i = 0; i < n; i++) {
 	createCircle();
  	angle += step;
  	cr += crStep;
  	r += rStep;
}


function createCircle() {
 	visArea.append("circle")
      .attr("r", r)
      .attr("cx", (w/2)+cr*Math.cos(angle))
      .attr("cy", (h/2)+cr*Math.sin(angle))
      .style("fill", newColor);
  
}