How to view this globe in 3D using Google Cardboard: Open the raw version of the bl.ock http://bl.ocks.org/allardw/raw/641fd92683303ab4e4d53cef22594c2a/ on your phones browser Put your phone in Google Carboard and enjoy :-)
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September 15, 2016 10:33
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Globe for Google Cardboard - experiment
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| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <body style="background-color: black"> | |
| <div id="viz"></div> | |
| <script> | |
| var width = (window.innerWidth > 0) ? window.innerWidth : screen.width; | |
| var diameter = width / 2.1, | |
| radius = diameter >> 1, | |
| zoom = radius/1.5, | |
| velocity = .01, | |
| then = Date.now(); | |
| var projection = d3.geo.orthographic() | |
| .scale(zoom - 2) | |
| .translate([radius, radius]) | |
| .clipAngle(90) | |
| .precision(0); | |
| var canvas = d3.select("#viz").selectAll("canvas") | |
| .data(d3.range(2)) | |
| .enter().append("canvas") | |
| .attr("class", "myCanvas") | |
| .attr("width", diameter) | |
| .attr("height", diameter); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| d3.json("world-110m2.json", function(error, _map) { | |
| if (error) throw error; | |
| var land = topojson.feature(_map, _map.objects.land), | |
| globe = {type: "Sphere"}; | |
| d3.timer(function() { | |
| var angle = velocity * (Date.now() - then); | |
| canvas.each(function(i) { | |
| var rotate = [0, 0, 0], context = this.getContext("2d"); | |
| rotate[0] = angle-(i*10), projection.rotate(rotate); | |
| //rotate[1] = angle, projection.rotate(rotate); | |
| context.clearRect(0, 0, diameter, diameter); | |
| context.beginPath(), path(globe), context.fillStyle="steelblue", context.fill(); | |
| context.beginPath(), path.context(context)(land), context.fillStyle="darkgreen", context.fill(); | |
| }); | |
| }); | |
| }); | |
| </script> |
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