I've taken Mike Bostock's block Fixed Zoom and turned it from a canvas into an SVG version (without the zoom) because I want a high res output of the Phyllotaxis layout
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March 28, 2021 02:45
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Phyllotaxis layout in SVG
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| license: gpl-3.0 | |
| height: 960 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <div id="chart"></div> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 960; | |
| var svg = d3.select('#chart') | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g"); | |
| var radius = 5; | |
| var points = d3.range(2000).map(phyllotaxis(10)); | |
| svg.selectAll(".point") | |
| .data(points) | |
| .enter().append("circle") | |
| .attr("class", "point") | |
| .attr("cx", function(d) { return d[0] + radius; }) | |
| .attr("cy", function(d) { return d[1]; }) | |
| .attr("r", radius) | |
| .style("fill", "#008800"); | |
| function phyllotaxis(radius) { | |
| var theta = Math.PI * (3 - Math.sqrt(5)); | |
| return function(i) { | |
| var r = radius * Math.sqrt(i), a = theta * i; | |
| return [ | |
| width / 2 + r * Math.cos(a), | |
| height / 2 + r * Math.sin(a) | |
| ]; | |
| }; | |
| }//function phyllotaxis | |
| </script> |
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