var fs = require(“fs”),

d3 = require("../../");

var formatNumber = d3.format(“,.02r”),

projection = d3.geo.stereographic().clipAngle(150),
path = d3.geo.path().projection(projection),
graticule = d3.geo.graticule().step([1, 1]),
circle = d3.geo.circle().angle(30),
n = 10,
o,
then;

o = circle(); then = Date.now();

for (var i = 0, k = 0; i < n * 1000; i++, k++) {

path(o);

}

console.log(“Single circle: ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

o = JSON.parse(fs.readFileSync(“./test/data/us-counties.json”)).features; then = Date.now();

for (var i = 0, k = 0; i < n; i++, k++) {

for (var j = 0, m = o.length; j < m; ++j) {
  path(o[j]);
}

}

console.log(“U.S. counties (separate): ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

o = JSON.parse(fs.readFileSync(“./test/data/us-counties.json”)); then = Date.now();

for (var i = 0, k = 0; i < n; i++, k++) {

path(o);

}

console.log(“U.S. counties: ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

o = graticule(); then = Date.now();

for (var i = 0, k = 0; i < n; i++, k++) {

path(o);

}

console.log(“Dense graticule: ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

o = {type: “GeometryCollection”, geometries: d3.range(-180, 180, 1).map(function(x) {

return circle.origin([x, 0])();

})}; then = Date.now();

for (var i = 0, k = 0; i < n; i++, k++) {

path(o);

}

console.log(“Circle polygons: ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

o = spiral(); then = Date.now();

for (var i = 0, k = 0; i < n; i++, k++) {

path(o);

}

console.log(“Spiral polygons: ” + formatNumber((Date.now() - then) / k) + “ms/op.”);

function spiral() {

var n = 1e4,
    dy = 5;

var spiral = d3.range(0, 1 + 1 / n, 1 / n).map(function(t) {
    return [(360 * 10 * t) % 360 - 180, -90 + dy + (90 - dy) * 2 * t];
}).concat(d3.range(1, 0, -1 / n).map(function(t) {
    return [(360 * 10 * t) % 360 - 180, -90 + (90 - dy) * 2 * t];
}));
spiral.push(spiral[0]);

return {type: "Polygon", coordinates: [spiral]};

}