Hollow Globe [UNLISTED]

Trying to visualize the Hollow Globe as invented by Paul Reclus.

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

.stroke {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}

.fill {
  fill: #fff;
}

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: 0.5px;
  stroke-opacity: 0.5;
}

.land {
  fill: #ccc;
}

.boundary {
  fill: none;
  stroke: #555;
  stroke-width: 0.5px;
}

</style>
<svg width="960" height="484"></svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/d3-geo-projection.v1.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script src="polylabel.js"></script>
<script>

var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height");

svg = svg
.append('g')
.attr("transform", "scale(-1, 1) translate("+ -width+",0)") // mirror for interior, remove this line for exterior
  ;

var edimburg = [-3.19, 55.95]
  
var projection = d3.geoConicEquidistant() // or geoConicEqualArea ??
    .rotate([-edimburg[0],90-edimburg[1], 180]) // 180 puts edimburg on the circuference, 0 puts it in the center
    .scale(80)
    .translate([width / 2, 1.35 * height / 2])
    .parallels([30,90])
    .precision(0.1);

var graticule = d3.geoGraticule();

var path = d3.geoPath()
    .projection(projection);

var defs = svg.append("defs");

defs.append("path")
    .datum({type: "Sphere"})
    .attr("id", "sphere")
    .attr("d", path);

defs.append("clipPath")
    .attr("id", "clip")
  .append("use")
    .attr("xlink:href", "#sphere");

svg.append("use")
    .attr("class", "stroke")
    .attr("xlink:href", "#sphere");

svg.append("use")
    .attr("class", "fill")
    .attr("xlink:href", "#sphere");

if(false)
svg.append("path")
    .datum(graticule)
    .attr("class", "graticule")
    .attr("clip-path", "url(#clip)")
    .attr("d", path);

var lines = svg.append("g"),
      circles = svg.append("g");
  
d3.json("https://unpkg.com/visionscarto-world-atlas@0.0.4/world/110m.json", function(error, world) {
  if (error) throw error;

if (true)
  svg.insert("path", ".graticule")
      .datum(topojson.feature(world, world.objects.countries))
      .attr("class", "land")
      .attr("clip-path", "url(#clip)")
      .attr("d", path);

if (false)
  svg.insert("path", ".graticule")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "boundary")
      .attr("clip-path", "url(#clip)")
      .attr("d", path);
  
  var w = topojson.feature(world, world.objects.countries);
  w.features.forEach(function(d, i){

// get the larget sub-polygon's coordinates
    var coord = d.geometry.coordinates;
    if (d.geometry.type == 'MultiPolygon') {
      var u = d3.scan(
        coord.map(function(p){
          return -d3.polygonArea(p[0]);
        })
      );
      coord = coord[u];
    }

});

</script>

https://d3js.org/d3.v4.min.js

https://d3js.org/d3-geo-projection.v1.min.js

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