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Rotating Equirectangular
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| license: gpl-3.0 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <!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 = 500; | |
| var velocity = .01, | |
| t0 = Date.now(); | |
| var projection = d3.geo.equirectangular() | |
| .scale(159); | |
| 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() { | |
| var t = Date.now() - t0; | |
| projection.rotate([0, velocity * t]); | |
| context.clearRect(0, 0, width, height); | |
| context.beginPath(); | |
| path(land); | |
| context.fill(); | |
| }); | |
| }); | |
| </script> |
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