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jittery line (original)
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| body { | |
| background-color: #323232; | |
| } | |
| p { | |
| color: white; | |
| font-family: 'Raleway', sans-serif; | |
| } | |
| .mainPath { | |
| stroke: white; | |
| stroke-width: 3; | |
| fill: none; | |
| } |
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| "use strict"; | |
| // standard parameters | |
| var margin = { | |
| top: 20, | |
| right: 0, | |
| bottom: 0, | |
| left: 0 | |
| }, | |
| width = 1400 - margin.left - margin.right, | |
| height = 500 - margin.bottom - margin.top; | |
| // new parameters | |
| var points = []; | |
| var jitter = 12; | |
| // define the function for the line with jitter | |
| var lineFunction = d3.svg.line() | |
| .x(function(d) { | |
| return d.x + Math.random() * jitter - jitter/2 - margin.left; | |
| console.log('x here') | |
| }) | |
| .y(function(d) { | |
| return d.y + Math.random() * jitter - jitter/2 - margin.top; | |
| }) | |
| .interpolate('basis'); | |
| // standard svg intro + mousemove | |
| var svg = d3.select(".main").append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .on("mousemove", function() { | |
| tick(d3.mouse(this)); | |
| }); | |
| // update line with new points | |
| function update() { | |
| svg.selectAll("path").remove(); | |
| svg.append('path') | |
| .attr("d", lineFunction(points)) | |
| .attr("class", "mainPath"); | |
| } | |
| // update point array | |
| function tick(coord) { | |
| points.push({ | |
| x: coord[0], | |
| y: coord[1] | |
| }); | |
| if (points.length > 40) { | |
| points.shift() | |
| } | |
| update() | |
| }; |
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Jitter Line</title> | |
| <link href='http://fonts.googleapis.com/css?family=Raleway' rel='stylesheet' type='text/css'> | |
| <link rel="stylesheet" href="animatedMouseMove.css"> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <!--[if lt IE 9]> | |
| <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> | |
| <![endif]--> | |
| </head> | |
| <body> | |
| <p>Use your mouse to sketch a (jittery) line.</p> | |
| <section id="box" class="main"> | |
| </section> | |
| <!-- call JS files --> | |
| <script src="animatedMouseMove.js"></script> | |
| </body> | |
| </html> |
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