Voronoi layer to trigger a circle
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March 24, 2016 15:59
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Voronoi triggering
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
body { | |
font: 10px sans-serif; | |
} | |
path { | |
pointer-events: all; | |
stroke: black; | |
stroke-width: 1px; | |
fill:none; | |
} | |
</style> | |
<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(50).map(function(d) { | |
return [d3.random.normal(width / 2, 80)(), d3.random.normal(height / 2, 80)()]; | |
}); | |
var voronoi = d3.geom.voronoi() | |
.clipExtent([[0, 0], [width, height]]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
var circles = svg.selectAll("circle") | |
.data(vertices) | |
.enter().append("circle") | |
.attr("transform", function(d) { return "translate(" + d + ")"; }) | |
.attr("r", 5) | |
.style("stroke","black") | |
.style("fill",function(d,i) { return color(i); }); | |
var path = svg.selectAll("path") | |
.data(voronoi(vertices), polygon) | |
.enter().append("path") | |
.attr("d", polygon) | |
.on("mouseover", function (d,i) { | |
circles.filter(function(circle) { return circle === d.point;}) | |
.style("stroke-width",3); | |
}) | |
.on("mouseout", function (d,i) { | |
circles.filter(function(circle) { return circle === d.point;}) | |
.style("stroke-width",0); | |
}); | |
function polygon(d) { | |
return "M" + d.join("L") + "Z"; | |
}; | |
</script> |
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