See-Through Globe II

Another way of implementing a see-through globe, this time always clipping to 90°, but flipping the canvas along the x-axis to draw the back-facing polygons.

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  background: #fcfcfa;
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 960,
    speed = -1e-2,
    start = Date.now();

var sphere = {type: "Sphere"};

var projection = d3.geo.orthographic()
    .scale(width / 2.1)
    .clipAngle(90)
    .translate([width / 2, height / 2]);

var graticule = d3.geo.graticule();

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("/../../data/world-110m.json", function(error, topo) {
  if (error) throw error;

var land = topojson.feature(topo, topo.objects.land),
      grid = graticule();

d3.timer(function() {
    var λ = speed * (Date.now() - start),
        φ = -15;

context.clearRect(0, 0, width, height);

context.beginPath();
    path(sphere);
    context.lineWidth = 3;
    context.strokeStyle = "#000";
    context.stroke();
    context.fillStyle = "#fff";
    context.fill();

context.save();
    context.translate(width / 2, 0);
    context.scale(-1, 1);
    context.translate(-width / 2, 0);
    projection.rotate([λ + 180, -φ]);

context.beginPath();
    path(land);
    context.fillStyle = "#dadac4";
    context.fill();

context.beginPath();
    path(grid);
    context.lineWidth = .5;
    context.strokeStyle = "rgba(119,119,119,.5)";
    context.stroke();

context.restore();
    projection.rotate([λ, φ]);

context.beginPath();
    path(grid);
    context.lineWidth = .5;
    context.strokeStyle = "rgba(119,119,119,.5)";
    context.stroke();

context.beginPath();
    path(land);
    context.fillStyle = "#737368";
    context.fill();
    context.lineWidth = .5;
    context.strokeStyle = "#000";
    context.stroke();
  });
});

d3.select(self.frameElement).style("height", height + "px");

</script>

Changed /mbostock/raw/4090846/world-110m.json to a local referenece

https://d3js.org/d3.v3.min.js

https://d3js.org/topojson.v1.min.js