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@mbostock mbostock/.block
Last active Jan 23, 2020

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This Is a Globe
license: gpl-3.0
redirect: https://observablehq.com/@mbostock/fake-globes
<!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 = 600;
var radius = height / 2 - 5,
scale = radius,
velocity = .02;
var projection = d3.geo.orthographic()
.translate([width / 2, height / 2])
.scale(scale)
.clipAngle(90);
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, world) {
if (error) throw error;
var land = topojson.feature(world, world.objects.land);
d3.timer(function(elapsed) {
context.clearRect(0, 0, width, height);
projection.rotate([velocity * elapsed, 0]);
context.beginPath();
path(land);
context.fill();
context.beginPath();
context.arc(width / 2, height / 2, radius, 0, 2 * Math.PI, true);
context.lineWidth = 2.5;
context.stroke();
});
});
d3.select(self.frameElement).style("height", height + "px");
</script>
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