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| license: gpl-3.0 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| path { | |
| fill: none; | |
| stroke-linejoin: round; | |
| } | |
| .sphere, | |
| .graticule { | |
| stroke: #aaa; | |
| } | |
| .equator { | |
| stroke: red; | |
| stroke-width: 2px; | |
| } | |
| </style> | |
| <body> | |
| <script src="//d3js.org/d3.v3.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500, | |
| rotate = [10, -10], | |
| velocity = [.003, -.001], | |
| time = Date.now(); | |
| var projection = d3.geo.orthographic() | |
| .scale(240) | |
| .translate([width / 2, height / 2]) | |
| .clipAngle(90 + 1e-6) | |
| .precision(.3); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var graticule = d3.geo.graticule(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| svg.append("path") | |
| .datum({type: "Sphere"}) | |
| .attr("class", "sphere") | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum(graticule) | |
| .attr("class", "graticule") | |
| .attr("d", path); | |
| svg.append("path") | |
| .datum({type: "LineString", coordinates: [[-180, 0], [-90, 0], [0, 0], [90, 0], [180, 0]]}) | |
| .attr("class", "equator") | |
| .attr("d", path); | |
| var feature = svg.selectAll("path"); | |
| d3.timer(function() { | |
| var dt = Date.now() - time; | |
| projection.rotate([rotate[0] + velocity[0] * dt, rotate[1] + velocity[1] * dt]); | |
| feature.attr("d", path); | |
| }); | |
| </script> |
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