Voronoi triggering for scatter plot inspired by njvack
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March 24, 2016 16:00
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Voronoi triggering II
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| path { | |
| pointer-events: all; | |
| stroke: none; | |
| fill: none; | |
| } | |
| path.show { | |
| stroke: black; | |
| stroke-width: 1px; | |
| fill: #8a8a89; | |
| opacity: .3; | |
| } | |
| #form { | |
| font: 12px sans-serif; | |
| position: absolute; | |
| top: 20px; | |
| right: 30px; | |
| } | |
| </style> | |
| <label id="form" for="show-voronoi"> | |
| Show Voronoi | |
| <input type="checkbox" id="show-voronoi" disabled> | |
| </label> | |
| <body> | |
| <script src="https://d3js.org/d3.v3.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500; | |
| var color = d3.scale.ordinal() | |
| .range(["#8dd3c7","#ffffb3","#bebada","#fb8072","#80b1d3","#fdb462","#b3de69","#fccde5","#d9d9d9","#bc80bd","#ccebc5","#ffed6f"]); | |
| var vertices = d3.range(100).map(function(d) { | |
| return [d3.random.normal(width / 2, 80)(), d3.random.normal(height / 2, 80)(), Math.random() * 10+2]; | |
| }); | |
| vertices.sort(function(a,b) { return b[2] - a[2]; }); | |
| var voronoi = d3.geom.voronoi() | |
| .clipExtent([[0, 0], [width, height]]); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| var clips = svg.append("g") | |
| .attr("id","clips"); | |
| clips.selectAll("clipPath") | |
| .data(vertices).enter() | |
| .append("clipPath") | |
| .attr("id", function(d, i) { return "clip-"+i;}) | |
| .append("circle") | |
| .attr('cx', function(d) { return d[0]; }) | |
| .attr('cy', function(d) { return d[1]; }) | |
| .attr("r", function(d) { return d[2] + 20; }); | |
| var circles = svg.append("g") | |
| .attr("id","points"); | |
| circles.selectAll("circle") | |
| .data(vertices).enter() | |
| .append("circle") | |
| .attr("id", function(d,i) { return "point-"+i; }) | |
| .attr("cx", function(d) { return d[0]; }) | |
| .attr("cy", function(d) { return d[1]; }) | |
| .attr("r", function(d) { return d[2]; }) | |
| .style("stroke","black") | |
| .style("opacity",1) | |
| .style("fill",function(d,i) { return color(i); }); | |
| var path = svg.append("g") | |
| .attr("id","voronoi"); | |
| path.selectAll("path") | |
| .data(voronoi(vertices), polygon).enter() | |
| .append("path") | |
| .attr("id", function(d,i) { return "path-"+i; }) | |
| .attr("clip-path", function(d,i) { return "url(#clip-"+i+")"; }) | |
| .attr("d", polygon) | |
| .on("mouseover", function(d, i) { | |
| svg.select('circle#point-'+i).style('stroke-width', "3px"); | |
| }) | |
| .on("mouseout", function(d, i) { | |
| svg.select('circle#point-'+i).style('stroke-width', "1px"); | |
| }); | |
| d3.select("#show-voronoi") | |
| .property("disabled", false) | |
| .on("change", function() { path.selectAll("path").classed("show", this.checked); }); | |
| function polygon(d) { | |
| return "M" + d.join("L") + "Z"; | |
| }; | |
| </script> |
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