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@jasondavies
Forked from mbostock/.block
Created July 9, 2012 13:00
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<!DOCTYPE html>
<meta charset="utf-8">
<style>
circle,
path {
fill: none;
stroke: #000;
}
circle {
stroke-width: 2px;
}
</style>
<body>
<script src="http://d3js.org/d3.v2.min.js"></script>
<script src="https://raw.github.com/d3/d3-plugins/clip/geo/clip/clip.js"></script>
<script>
var width = 960,
height = 500,
radius = 240;
var origin = [-71, 42],
velocity = [.010, -.002],
t0 = Date.now();
var projection = d3.geo.azimuthal()
.mode("orthographic")
.scale(radius)
.translate([width / 2, height / 2]);
var clip = d3.geo.clip();
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
d3.json("readme.json", function(err, geometry) {
var feature = svg.append("path")
.datum(geometry)
.attr("d", draw);
d3.timer(function() {
var t = Date.now() - t0,
o = [origin[0] + velocity[0] * t, origin[1] + velocity[1] * t];
projection.origin(o);
clip.origin(o);
feature.attr("d", draw);
});
function draw(d) {
return path(clip(d));
}
});
</script>
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