Skip to content

Instantly share code, notes, and snippets.

@pstuffa

pstuffa/.block

Last active March 26, 2017 23:14
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save pstuffa/7925099db37203d37ec7eed7b09b69d2 to your computer and use it in GitHub Desktop.
Save pstuffa/7925099db37203d37ec7eed7b09b69d2 to your computer and use it in GitHub Desktop.
Download ZIP
Oscilloscope
Raw
.block
license: mit
Raw
index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body {
background: #2f3337 !important;
padding: 0px;
margin: 0px;
}
svg {
padding: 0px;
margin: 0px;
}
#chart {
text-align: center;
margin: 0px;
padding: 0px;
}
.dots {
fill: #53535f;
}
.line {
stroke: #22ffc5;
stroke-width: 1;
stroke-opacity: .75;
fill: none;
}
</style>
</head>
<body>
<div id="chart"> </div>
<script>
var margin = {top: 60, right: 60, bottom: 60, left: 60},
width = window.innerHeight*2 - margin.left - margin.right,
height = window.innerHeight - margin.top - margin.bottom,
numTicks = 20,
numDashes = 5,
numDots = 20;
tickSpace = 8;
var y = d3.scaleLinear()
.range([height, 0])
.domain([-1,1])
var x = d3.scaleLinear()
.range([0, width])
.domain([-2,2])
var xConversion = d3.scaleLinear()
.range([-2, 2])
.domain([0, 1])
var svg = d3.select("#chart").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.style("filter","url(#I)")
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var defs = svg.append("defs");
var filter = defs.append("filter").attr("id","spect");
var turbulence = filter.append("feTurbulence")
.attr("baseFrequency",".4")
.attr("numOctaves","2")
.attr("seed", 201);
var filterGoo = defs.append("filter").attr("id","gooeyCodeFilter");
filterGoo.append("feGaussianBlur")
.attr("in","SourceGraphic")
.attr("stdDeviation","5")
.attr("color-interpolation-filters","sRGB")
.attr("result","blur");
filterGoo.append("feColorMatrix")
.attr("in","blur")
.attr("mode","matrix")
.attr("values","1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7")
.attr("result","gooey");
var backgroundnoise = svg.append("rect")
.attr("filter","url(#spect)")
.style("opacity", .2)
.attr("width", width)
.attr("height", height);
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.axisBottom(x).tickSize(-height).ticks(numTicks))
.selectAll("line")
.style("stroke-dasharray", function(d,i) {
var dashArray = []
for (var k = 0; k < numTicks; k += 1) {
dashArray.push((height/numTicks - (tickSpace/2) - (k > 0 ? (tickSpace/2) : 0)));
dashArray.push(tickSpace)
}
return dashArray.join(",") })
svg.append("g")
.attr("class", "y axis")
.call(d3.axisLeft(y).tickSize(-width).ticks(numTicks))
.selectAll("line")
.style("stroke-dasharray", function(d,i) {
var dashArray = []
for (var k = 0; k < numTicks; k += 1) {
dashArray.push((width/numTicks - (tickSpace/2) - (k > 0 ? (tickSpace/2) : 0)));
dashArray.push(tickSpace)
}
return dashArray.join(",") })
var line = d3.line()
.curve(d3.curveCatmullRom)
.x(function(d) { return x(d.x); })
.y(function(d) { return y(d.y/10); });
var data = []
svg.append("path")
.datum(data)
.attr("class", "line")
.attr("clip-path", "url(#clip)")
.attr("d", line)
.style("filter", "url(#gooeyCodeFilter)");
svg.selectAll(".verticalDashes")
.data(d3.range(numTicks*numDashes).map(Object))
.enter().append("line")
.attr("class", "verticalDashes")
.attr("y1", function(d, i) { return i*(height/numTicks/numDashes); } )
.attr("y2", function(d, i) { return i*(height/numTicks/numDashes); } )
.attr("x1", x(-.025))
.attr("x2", x(.025))
.style("stroke", "#000")
.style("stroke-dasharray", function() {
var unit = x(.025) - x(0);
return (unit - (tickSpace/4)) + "," + (tickSpace/2) + "," + (unit - (tickSpace/4))
})
svg.selectAll(".horizontalDashes")
.data(d3.range(numTicks*numDashes).map(Object))
.enter().append("line")
.attr("class", "horizontalDashes")
.attr("x1", function(d, i) { return i*(width/numTicks/numDashes); } )
.attr("x2", function(d, i) { return i*(width/numTicks/numDashes); } )
.attr("y1", y(-.025))
.attr("y2", y(.025))
.style("stroke", "#000")
.style("stroke-dasharray", function() {
var unit = x(.025) - x(0);
return (unit - (tickSpace/4)) + "," + (tickSpace/2) + "," + (unit - (tickSpace/4))
})
svg.selectAll(".rowOne dots")
.data(d3.range(numTicks*numDots).map(Object))
.enter().append("circle")
.attr("class", "rowOne dots")
.attr("cx", function(d, i) { return i*(width/numTicks/numDots); } )
.attr("cy", function(d, i) { return i % 2 == 0 ? y(.28) : y(-.28) })
.attr("r", 1);
svg.selectAll(".rowTwo")
.data(d3.range(numTicks*numDots).map(Object))
.enter().append("circle")
.attr("class", "rowTwo dots")
.attr("cx", function(d, i) { return i*(width/numTicks/numDots); } )
.attr("cy", function(d, i) { return i % 2 == 0 ? y(.44) : y(-.44) })
.attr("r", 1);
svg.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var strokeWidth = 10;
var t = d3.interval(function(elapsed) {
data.push({x: 0, y: 0});
xConversion.domain([0, data.length-1])
data.forEach(function(d, i) {
d.x = xConversion(i)
d.y = Math.tan(i+1)
});
strokeWidth -= .01
svg.select(".line")
.datum(data)
.attr("d", line)
.style("stroke-width", strokeWidth)
if (elapsed > 30000) t.stop();
}, 10);
</script>
</body>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment