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sin, cos, random
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<meta charset="utf-8"> | |
<title>sin, cos, random</title> | |
</head> | |
<body> | |
<button type="button" onclick="draw('sin')">sin</button> | |
<button type="button" onclick="draw('cos')">cos</button> | |
<button type="button" onclick="draw('rnd')">rnd</button> | |
<div id="viz"><div> | |
<script> | |
var w = 960, h = 450; | |
var x = d3.range(0, 2*3.14, 0.1); | |
var xp = d3.scale.linear().domain([0, 2*3.14]).range([0, w]); | |
var viz = d3.select("div#viz").append("svg").attr("width", w).attr("height", h); | |
viz.selectAll("line") | |
.data(x) | |
.enter() | |
.append("line") | |
.attr("stroke","grey") | |
.attr("stroke-width","13") | |
.attr("x1",xp) | |
.attr("y1",h/2) | |
.attr("x2",xp) | |
.attr("y2", function(d,i) { return h/2+Math.sin(d)*(-h/2); } ) | |
.on("mouseover", function(d) { d3.select(this).attr("stroke","black"); } ) | |
.on("mouseout", function(d) { d3.select(this).attr("stroke","grey"); } ); | |
function draw(f) { | |
viz.selectAll("line").data(x).transition() | |
.delay(function(d,i) {return i;} ) | |
.attr("y2", function(d) { | |
switch(f) { | |
case 'sin': | |
return h/2 + (Math.sin(d) * (-h/2)); | |
case 'cos': | |
return h/2 + (Math.cos(d) * (-h/2)); | |
default: | |
return h/2 + (Math.random()*2-1)*(-h/2); | |
} | |
}); | |
} | |
</script> | |
</body> | |
</html> |
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