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@davo

davo/README.md

Forked from mbostock/.block
Created Dec 21, 2012
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<!DOCTYPE html>
<meta charset="utf-8">
<style>
h1 {
position: absolute;
top: 280px;
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 18px;
text-align: center;
width: 960px;
}
</style>
<h1></h1>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/queue.v1.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>
<script>
var width = 960,
height = 500;
var projection = d3.geo.orthographic()
.scale(248)
.clipAngle(87);
var canvas = d3.select("body").append("canvas")
.attr("width", width)
.attr("height", height);
var c = canvas.node().getContext("2d");
var path = d3.geo.path()
.projection(projection)
.context(c);
var title = d3.select("h1");
queue()
.defer(d3.json, "/d/4090846/world-110m.json")
.defer(d3.tsv, "/d/4090846/world-country-names.tsv")
.await(ready);
function ready(error, world, names) {
var globe = {type: "Sphere"},
land = topojson.object(world, world.objects.land),
countries = topojson.object(world, world.objects.countries).geometries,
borders = topojson.mesh(world, world.objects.countries, function(a, b) { return a.id !== b.id; }),
i = -1,
n = countries.length;
countries.forEach(function(d) { d.name = names.filter(function(n) { return d.id == n.id; })[0].name; });
countries.sort(function(a, b) { return a.name.localeCompare(b.name); });
(function transition() {
d3.transition()
.duration(1250)
.each("start", function() {
title.text(countries[i = (i + 1) % n].name);
})
.tween("rotate", function() {
var p = d3.geo.centroid(countries[i]),
r = d3.interpolate(projection.rotate(), [-p[0], -p[1]]);
return function(t) {
projection.rotate(r(t));
c.clearRect(0, 0, width, height);
c.fillStyle = "#bbb", c.beginPath(), path(land), c.fill();
c.fillStyle = "#f00", c.beginPath(), path(countries[i]), c.fill();
c.strokeStyle = "#fff", c.lineWidth = .5, c.beginPath(), path(borders), c.stroke();
c.strokeStyle = "#000", c.lineWidth = 2, c.beginPath(), path(globe), c.stroke();
};
})
.transition()
.each("end", transition);
})();
}
</script>
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