Created by Christopher Manning
- Drag left and right to adjust the width of the noise
- Drag up and down to adjust the height of the noise
- Use the mousewheel to increase or decrease the amplitude.
Last active
December 9, 2015 19:18
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Simplex Noise Dots
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>Simplex Noise Dots</title> | |
| <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/d3/2.10.0/d3.v2.min.js"></script> | |
| <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/dat-gui/0.5/dat.gui.min.js"></script> | |
| <script src="http://bl.ocks.org/d/4289018/simplex-noise.min.js"></script> | |
| <style type="text/css"> | |
| body { | |
| margin: 0; | |
| background-color: #FFF; | |
| } | |
| svg circle { | |
| fill: #000; | |
| } | |
| </style> | |
| </head> | |
| <body></body> | |
| <script type="text/javascript"> | |
| var width = window.innerWidth || 960, | |
| height = window.innerHeight || 500 | |
| var config = { "rows": width/30, "cols": height/6.5, "x": 100, "y": 100, "dx": 10, "dy": 10, "amplitude": 7, "velocity": 50, "margin": 100}; | |
| var gui = new dat.GUI(); | |
| gui.close() | |
| gui.add(config, "rows", 1, 100).listen(); | |
| gui.add(config, "cols", 1, 100).listen(); | |
| gui.add(config, "x", 1, 100).listen(); | |
| gui.add(config, "y", 1, 100).listen(); | |
| gui.add(config, "dx", 0, 100).listen(); | |
| gui.add(config, "dy", 0, 100).listen(); | |
| amplitudeChanger = gui.add(config, "amplitude", 1, 100).listen(); | |
| amplitudeChanger.onChange(function(value) { | |
| radius.range([0, config["amplitude"]]) | |
| }); | |
| gui.add(config, "velocity", 0, 100).listen(); | |
| gui.add(config, "margin", 0, 100).listen(); | |
| config.random = function(){ | |
| gui.__controllers.forEach(function(c){ | |
| if(c.property!="random"&&c.property!="margin"){ | |
| c.setValue(Math.floor(Math.random() * c.__max) + c.__min) | |
| } | |
| }) | |
| } | |
| gui.add(config, "random") | |
| var zoom = d3.behavior.zoom() | |
| .scale(config["amplitude"]) | |
| .scaleExtent([1, 100]) | |
| .on("zoom", function(d,i) { | |
| config["amplitude"] = Math.floor(d3.event.scale) | |
| radius.range([0, config["amplitude"]]) | |
| }); | |
| var drag = d3.behavior.drag() | |
| .on("drag", function() { | |
| if(config["x"] + d3.event.dx > 0) config["x"] += d3.event.dx | |
| if(config["y"] + d3.event.dy > 0) config["y"] += d3.event.dy | |
| }) | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .call(zoom) | |
| .call(drag) | |
| var simplex = new SimplexNoise(), | |
| radius = d3.scale.linear().domain([-1, 1]).range([0, config["amplitude"]]), | |
| circle = svg.selectAll("circle") | |
| d3.timer(function(t){ | |
| if(config["velocity"] == 0) return | |
| data = [] | |
| for (x = 0; x <= config["cols"]; x++) { | |
| for (y = 0; y <= config["rows"]; y++) { | |
| r = radius(simplex.noise3D(x/config["x"], y/config["y"], t/((99-config["velocity"])*100))) | |
| data.push( { | |
| r: r, | |
| cx: config["margin"] + x * config["dx"] + config["amplitude"] - r, | |
| cy: config["margin"] + y * config["dy"] + config["amplitude"] - r | |
| }) | |
| } | |
| } | |
| circle = circle | |
| .data(data) | |
| circle.enter() | |
| .append("circle") | |
| circle | |
| .attr("cx", function(d) { return d.cx }) | |
| .attr("cy", function(d) { return d.cy }) | |
| .attr("r", function(d) { return d.r }) | |
| circle.exit() | |
| .remove() | |
| }) | |
| </script> | |
| </html> |
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