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square grid inverted glow (grids)
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| license: mit |
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"> | |
| <style> | |
| rect { | |
| fill: none; | |
| stroke: black; | |
| stroke-width: 1; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v4.js"></script> | |
| <script src="http://romsson.github.io/d3-gridding/build/d3-gridding.js"></script> | |
| <script> | |
| var width = 400, | |
| height = 400, | |
| n = 20, | |
| m = 20, | |
| t = 100; | |
| function cross(a, b) { | |
| var c = [], n = a.length, m = b.length, i, j; | |
| for (i = -1; ++i < n;) { | |
| for (j = -1; ++j < m;) { | |
| c.push({x: a[i], i: i, y: b[j], j: j, w: a[i].length, h: b[j].length}); | |
| } | |
| } | |
| return c; | |
| } | |
| var x = d3.scaleLinear().rangeRound([0, width]); | |
| var y = d3.scaleLinear().rangeRound([0, height]); | |
| var data = d3.range(1000).map(d3.randomBates(5)); | |
| var bins = d3.histogram() | |
| .domain(x.domain()) | |
| .thresholds(x.ticks(n)) | |
| (data); | |
| data = cross(bins, bins); | |
| var radius = d3.scaleSqrt() | |
| .range([0, width/n]); | |
| radius.domain(d3.extent(data, function(d) { return d.h * d.w; })) | |
| data.forEach(function(d) { | |
| d.w = d.h = 20-radius(d.w * d.h); | |
| }) | |
| var params = { | |
| "size": [width, height], | |
| "offset": [0, 0], | |
| "mode": "coordinate", | |
| "valueX": "i", | |
| "valueY": "j", | |
| "valueWidth": function(d) { return d["w"]; }, | |
| "valueHeight": function(d) { return d["h"]; } | |
| }; | |
| var svgSquares = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g"); | |
| function draw() { | |
| var gridding = d3.gridding() | |
| .params(params); | |
| svgSquares.selectAll(".square") | |
| .data(gridding(data)) | |
| .enter().append("rect") | |
| .attr("class", "square") | |
| .attr("width", function(d) { return d.w; }) | |
| .attr("height", function(d) { return d.h; }) | |
| .attr("transform", function(d) { return "translate(" + (d.x - d.w/2) + "," + (d.y - d.h/2) + ")rotate("+2*radius(d.w * d.h)+")"; }) | |
| } | |
| draw(); | |
| </script> | |
| </body> |
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