D3 Examples - Geodesic Grid

xxxxxxxxxx
 
<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
path {
  fill: none;
  stroke: #00f;
}
​
path1 {
  fill: none;
  stroke: #f00;
}
​
​
circle {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}
</style>
​
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="geodesic.js" charset="utf-8"></script>
<script>
​
var width = 960,
    height = 500;
​
var velocity = [-.003, .003];
var velocity1 = [-.015, .015];
​
var projection = d3.geo.orthographic()
    .scale(240);
​
  var projection1 = d3.geo.orthographic()
    .scale(140);
​
var path = d3.geo.path()
    .projection(projection);
​
  var path1 = d3.geo.path()
    .projection(projection1);
​
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);
​
var feature = svg.append("path")
    .datum(d3.geodesic.multilinestring(2));
​
 var feature1 = svg.append("path")
    .datum(d3.geodesic.multilinestring(4)).style("stroke", "red");
​
svg.append("circle")
    .style("stroke", "blue")
    .attr("r", 240)
    .attr("cx", width / 2)
    .attr("cy", height / 2);
​
  
d3.timer(function(elapsed) {
  projection.rotate([elapsed * velocity[0], elapsed * velocity[1]]);
  feature.attr("d", path);
  projection1.rotate([elapsed * velocity1[1], elapsed * velocity1[0]]);
  feature1.attr("d", path1);
  //feature.attr("d", path1);
});
​
</script>
​
    