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@mbostock /.block
Last active Feb 9, 2016

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Spinny Globe
license: gpl-3.0
<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>
var width = 960,
height = 720,
origin = [71, -42],
velocity = [.010, -.002],
t0 = Date.now();
var sphere = {type: "Sphere"};
var projection = d3.geo.orthographic()
.scale(height / 2.1)
.translate([width / 2, height / 2])
.clipAngle(90)
.precision(.5);
var canvas = d3.select("body").append("canvas")
.attr("width", width)
.attr("height", height);
var context = canvas.node().getContext("2d");
var path = d3.geo.path()
.projection(projection)
.context(context);
d3.json("/mbostock/raw/4090846/world-110m.json", function(error, topo) {
if (error) throw error;
var land = topojson.feature(topo, topo.objects.land);
d3.timer(function() {
var dt = Date.now() - t0;
projection.rotate([velocity[0] * dt + origin[0], velocity[1] * dt + origin[1]]);
context.clearRect(0, 0, width, height);
context.beginPath();
path(sphere);
context.lineWidth = 2;
context.strokeStyle = "#000";
context.stroke();
context.beginPath();
path(land);
context.lineWidth = 1;
context.strokeStyle = "#000";
context.stroke();
});
});
d3.select(self.frameElement).style("height", height + "px");
</script>
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