mbostock/.block

## .block
license: gpl-3.0
redirect: https://observablehq.com/@mbostock/fake-globes

## README.md

      
        
                
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              README.md
            
          
        
      
      
    This is not a globe. This is a globe.

  

  

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 600;

var radius = height / 2 - 5,
    scale = radius * 2 / Math.PI,
    offset = radius * 4,
    velocity = .1;

var projection = d3.geo.equirectangular()
    .scale(scale)
    .precision(0);

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("/mbostock/raw/4090846/world-110m.json", function(error, world) {
  if (error) throw error;

  var land = topojson.feature(world, world.objects.land);

  d3.timer(function(elapsed) {
    context.clearRect(0, 0, width, height);
    context.save();

    context.beginPath();
    context.arc(width / 2, height / 2, radius, 0, 2 * Math.PI, true);
    context.clip();

    var x = velocity * elapsed % offset;
    if (x > offset / 2) x -= offset;

    projection.translate([x, height / 2]);
    context.beginPath();
    path(land);
    context.fill();

    projection.translate([x + offset, height / 2]);
    context.beginPath();
    path(land);
    context.fill();

    context.restore();

    context.beginPath();
    context.arc(width / 2, height / 2, radius, 0, 2 * Math.PI, true);
    context.lineWidth = 2.5;
    context.stroke();
  });
});

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

</script>

## thumbnail.png

      
        
                
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              thumbnail.png
	license: gpl-3.0
	redirect: https://observablehq.com/@mbostock/fake-globes
	<!DOCTYPE html>
	<meta charset="utf-8">
	<body>
	<script src="//d3js.org/d3.v3.min.js"></script>
	<script src="//d3js.org/topojson.v1.min.js"></script>
	<script>

	var width = 960,
	height = 600;

	var radius = height / 2 - 5,
	scale = radius * 2 / Math.PI,
	offset = radius * 4,
	velocity = .1;

	var projection = d3.geo.equirectangular()
	.scale(scale)
	.precision(0);

	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("/mbostock/raw/4090846/world-110m.json", function(error, world) {
	if (error) throw error;

	var land = topojson.feature(world, world.objects.land);

	d3.timer(function(elapsed) {
	context.clearRect(0, 0, width, height);
	context.save();

	context.beginPath();
	context.arc(width / 2, height / 2, radius, 0, 2 * Math.PI, true);
	context.clip();

	var x = velocity * elapsed % offset;
	if (x > offset / 2) x -= offset;

	projection.translate([x, height / 2]);
	context.beginPath();
	path(land);
	context.fill();

	projection.translate([x + offset, height / 2]);
	context.beginPath();
	path(land);
	context.fill();

	context.restore();

	context.beginPath();
	context.arc(width / 2, height / 2, radius, 0, 2 * Math.PI, true);
	context.lineWidth = 2.5;
	context.stroke();
	});
	});

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

	</script>