Using Canvas shadows.
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October 28, 2017 13:31
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Canvas shadows
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| license: mit | |
| border: none |
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> | |
| <style> | |
| body { | |
| margin: 0 | |
| } | |
| </style> | |
| <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script src="https://d3js.org/topojson.v1.min.js"></script> | |
| <script src="https://unpkg.com/rbush@1.4.3/rbush.js"></script> | |
| <script src="https://unpkg.com/spamjs@1.1.0/spam.min.js"></script> | |
| <script type='text/javascript'> | |
| var graticule = d3.geo.graticule(); | |
| d3.json("world-50m.json", function(error, d) { | |
| topojson.presimplify(d); | |
| var map = new StaticCanvasMap({ | |
| element: "body", | |
| width: 960, | |
| projection: d3.geo.equirectangular(), | |
| data: [ | |
| { | |
| features: topojson.feature(d, d.objects["land"]), | |
| static: { | |
| prepaint: function(parameters) { | |
| parameters.context.beginPath(); | |
| parameters.path(graticule.outline()); | |
| parameters.context.fillStyle = "rgb(5, 5, 5)"; | |
| parameters.context.fill(); | |
| }, | |
| paintfeature: function(parameters, d) { | |
| parameters.context.fillStyle = "rgb(20, 20, 20)"; | |
| parameters.context.fill(); | |
| parameters.context.lineWidth = 2; | |
| parameters.context.strokeStyle = "rgb(8, 110, 138)"; | |
| parameters.context.shadowColor = "rgba(255,255,255, 0.4)"; | |
| parameters.context.shadowOffsetX = 0; | |
| parameters.context.shadowOffsetY = 0; | |
| parameters.context.shadowBlur = 20; | |
| parameters.context.stroke(); | |
| } | |
| } | |
| }, | |
| { | |
| features: topojson.feature(d, d.objects["countries"]), | |
| static: { | |
| paintfeature: function(parameters, d) { | |
| parameters.context.lineWidth = 1; | |
| parameters.context.strokeStyle = "rgba(8, 110, 138, .3)"; | |
| parameters.context.stroke(); | |
| } | |
| } | |
| } | |
| ] | |
| }); | |
| map.init(); | |
| }); | |
| </script> |
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