JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://d3js.org/topojson.v1.min.js"></script>
<h1>Drag to explore</h1>
<!--
http://stackoverflow.com/questions/21030503/how-to-run-mike-bostocks-d3-examples
http://bl.ocks.org/mbostock/6746848
http://bl.ocks.org/mbostock/3795040
-->
JavaScript + D3 3.x
CSS
body {
font-family: Georgia, sans-serif;
}
JavaScript
var width = 600,
height = 600,
speed = -1e-2,
start = Date.now();
var sphere = {type: "Sphere"};
var projection = d3.geo.orthographic()
.scale(width / 2.1)
.translate([width / 2, height / 2])
.precision(.5);
var graticule = d3.geo.graticule();
var λ = d3.scale.linear()
.domain([0, width])
.range([-180, 180]);
var φ = d3.scale.linear()
.domain([0, height])
.range([90, -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);
var land, grid;
function drawSphere() {
context.clearRect(0, 0, width, height);
context.beginPath();
path(sphere);
context.lineWidth = 3;
context.strokeStyle = "black";
context.stroke();
context.fillStyle = "skyblue";
context.fill();
projection.clipAngle(180);
context.beginPath();
path(land);
context.fillStyle = "wheat";
context.fill();
context.beginPath();
path(grid);
context.lineWidth = .5;
context.strokeStyle = "gray";
context.stroke();
projection.clipAngle(90);
context.beginPath();
path(land);
context.fillStyle = "lightgreen";
context.fill();
context.lineWidth = .5;
context.strokeStyle = "#000";
context.stroke();
}
//d3.json("https://render.github.com/mbostock/topojson/master/examples/world-110m.json", function(error, topo) {
d3.json("https://cdn.rawgit.com/mbostock/topojson/v1.6.26/examples/world-110m.json", function(error, topo) {
land = topojson.feature(topo, topo.objects.land);
grid = graticule();
var autoRot = true, rotOff,
dragStart, dragCurr, dragOff = [0,0];
function addArrays(a1, a2, subtract) {
return a1.map(function(x, i) {
return subtract ? x - a2[i] : x + a2[i];
});
}
//Start by having the sphere rotate slowly:
...