World map with rivers and lakes using Natural Earth data.
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July 3, 2020 17:46
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World map with rivers
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| license: gpl-3.0 | |
| height: 960 | |
| border: no |
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.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <title>Geo (spinning))</title> | |
| </head> | |
| <style> | |
| body { | |
| background-color: #eee; | |
| } | |
| </style> | |
| <body> | |
| <canvas id="content"></canvas> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/3.0.0/topojson.min.js"></script> | |
| <script> | |
| var context = document.getElementById('content').getContext('2d'); | |
| var width = window.innerWidth; | |
| var height = window.innerHeight; | |
| var size = d3.min([width, height]); | |
| var landGeojson, riversGeojson, lakesGeojson; | |
| d3.select('#content') | |
| .attr('width', width + 'px') | |
| .attr('height', height + 'px'); | |
| var projection = d3.geoOrthographic() | |
| .scale(0.45 * size) | |
| .translate([0.5 * width, 0.5 * height]); | |
| var geoGenerator = d3.geoPath() | |
| .projection(projection) | |
| .context(context); | |
| function drawFeatures(features, fill) { | |
| context.beginPath(); | |
| geoGenerator({type: 'FeatureCollection', features: features}); | |
| fill ? context.fill() : context.stroke(); | |
| } | |
| function update(t) { | |
| context.clearRect(0, 0, width, height); | |
| projection.rotate([-t / 1000 - 40]) | |
| context.lineWidth = 0.3; | |
| context.strokeStyle = '#999'; | |
| drawFeatures(landGeojson.features, false); | |
| context.strokeStyle = '#3882bc'; | |
| context.lineWidth = 0.5; | |
| drawFeatures(riversGeojson.features, false); | |
| context.fillStyle = '#3882bc'; | |
| drawFeatures(lakesGeojson.features, true); | |
| window.requestAnimationFrame(update); | |
| } | |
| // REQUEST DATA | |
| d3.json('ne.json', function(err, json) { | |
| landGeojson = topojson.feature(json, json.objects.ne_50m_admin_0_countries) | |
| riversGeojson = topojson.feature(json, json.objects.ne_10m_rivers_lake_centerlines) | |
| lakesGeojson = topojson.feature(json, json.objects.ne_10m_lakes) | |
| window.requestAnimationFrame(update); | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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