Fiddling with d3.geom.voronoi and a polygon.
The polygon's vertices are fed into the Voronoi layout, that yields the colored regions as output. Also, links are drawn as dashed lines.
Relevant examples by Mike Bostock:
Last active
December 26, 2015 23:49
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Voronoi
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| window.main = () -> | |
| width = 960 | |
| height = 500 | |
| svg = d3.select('body').append('svg') | |
| .attr('width', width) | |
| .attr('height', height) | |
| polygon = [[300, 200], [300, 300], [370, 310], [400, 300], [360, 260], [400, 180]] | |
| window.voronoi = d3.geom.voronoi() | |
| .clipExtent([[.5, .5], [width - .5, height - .5]]) | |
| colorize = d3.scale.category10() | |
| svg.selectAll('.voronoi') | |
| .data(voronoi(polygon)) | |
| .enter().append('path') | |
| .attr('class', 'voronoi') | |
| .style('fill', (d, i) -> colorize(i)) | |
| .attr('d', (d) -> "M#{d.join('L')}Z") | |
| svg.selectAll('.polygon') | |
| .data([polygon]) | |
| .enter().append('path') | |
| .attr('class', 'polygon') | |
| .attr('d', (d) -> "M#{d.join('L')}Z") | |
| svg.selectAll('.link') | |
| .data(voronoi.links(polygon)) | |
| .enter().append('line') | |
| .attr('class', 'link') | |
| .attr('x1', (d) -> d.source[0]) | |
| .attr('y1', (d) -> d.source[1]) | |
| .attr('x2', (d) -> d.target[0]) | |
| .attr('y2', (d) -> d.target[1]) | |
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| .voronoi { | |
| opacity: 0.4; | |
| } | |
| .polygon { | |
| stroke: black; | |
| stroke-width: 2px; | |
| fill: none; | |
| } | |
| .link { | |
| stroke: black; | |
| stroke-width: 1px; | |
| stroke-dasharray: 4 4; | |
| opacity: 0.5; | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Voronoi</title> | |
| <link type="text/css" href="index.css" rel="stylesheet"/> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="index.js"></script> | |
| </head> | |
| <body onload="main()"></body> | |
| </html> |
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| (function() { | |
| window.main = function() { | |
| var colorize, height, polygon, svg, width; | |
| width = 960; | |
| height = 500; | |
| svg = d3.select('body').append('svg').attr('width', width).attr('height', height); | |
| polygon = [[300, 200], [300, 300], [370, 310], [400, 300], [360, 260], [400, 180]]; | |
| window.voronoi = d3.geom.voronoi().clipExtent([[.5, .5], [width - .5, height - .5]]); | |
| colorize = d3.scale.category10(); | |
| svg.selectAll('.voronoi').data(voronoi(polygon)).enter().append('path').attr('class', 'voronoi').style('fill', function(d, i) { | |
| return colorize(i); | |
| }).attr('d', function(d) { | |
| return "M" + (d.join('L')) + "Z"; | |
| }); | |
| svg.selectAll('.polygon').data([polygon]).enter().append('path').attr('class', 'polygon').attr('d', function(d) { | |
| return "M" + (d.join('L')) + "Z"; | |
| }); | |
| return svg.selectAll('.link').data(voronoi.links(polygon)).enter().append('line').attr('class', 'link').attr('x1', function(d) { | |
| return d.source[0]; | |
| }).attr('y1', function(d) { | |
| return d.source[1]; | |
| }).attr('x2', function(d) { | |
| return d.target[0]; | |
| }).attr('y2', function(d) { | |
| return d.target[1]; | |
| }); | |
| }; | |
| }).call(this); |
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| .voronoi | |
| opacity: 0.4 | |
| .polygon | |
| stroke: black | |
| stroke-width: 2px | |
| fill: none | |
| .link | |
| stroke: black | |
| stroke-width: 1px | |
| stroke-dasharray: 4 4 | |
| opacity: 0.5 | |
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