seinfeld

_.md

[ Launch: seinfeld ] 6799084 by ptvans
[ Launch: sin waves ] 6789968 by ptvans

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config.json

{"editor_editor":{"coffee":false,"vim":false,"emacs":false,"width":600,"height":300,"hide":false},"description":"seinfeld","endpoint":"","display":"svg","public":true,"require":[],"fileconfigs":{"_.md":{"default":true,"vim":false,"emacs":false,"fontSize":12},"config.json":{"default":true,"vim":false,"emacs":false,"fontSize":12},"inlet.js":{"default":true,"vim":false,"emacs":false,"fontSize":12},"inlet.svg":{"default":true,"vim":false,"emacs":false,"fontSize":12}},"fullscreen":true,"play":true,"loop":true,"restart":false,"autoinit":true,"pause":true,"loop_type":"period","bv":false,"nclones":15,"clone_opacity":0.4,"duration":3000,"ease":"linear","dt":0.01,"thumbnail":"http://i.imgur.com/5yUdzBm.png"}

inlet.js

tributary.duration = 50000;

//Layout properties
var n = 24;
var m = 48;
trib.spacing = 24;
trib.opacity = 0.8; trib_options.opacity = {"min":0, "max":1};
trib.stroke_width = 1;

//Sin wave function
//y = amplitude * sin( omega * theta + phase)
trib.amplitude = 70;
trib.theta = -7;
trib.omega = 1.57696;
trib.phase = tributary.anim(1,7.25);

var colors = [
    '#51B6AA'
    , '#6ECEB3'
    , '#8C6EC0'
    , '#BC89C0'
    
]

//interpolate over multiple colors
var color_scale = function(i) {
    var num_interps = colors.length -1
    
    var ord = d3.scale.linear()
        .domain([0, n])
        .range([0, num_interps])
    
    var section = parseInt(ord(i))
    var section_size = n / num_interps
    //get the two colors we want to interpolate between
    var col_range = [colors[section], colors[section+1]]
    
    var col_scale = d3.scale.linear()
        .domain([section * section_size, (section+1) * section_size])
        //.interpolate(d3.interpolateRgb)
        .interpolate(d3.interpolateHsl)
        .range(col_range)
    
    return col_scale(i)
    
}

var color = color_scale



var sw = tributary.sw * 1.1;
//make the sin waves extend past the width a little
//sw += .1 * sw
var sh = tributary.sh;


var lines = [ ];
for (i in d3.range(n)) {

    var data = d3.range(m) 
    lines.push({ 
        index: i,
        data: data
    })
}

var xscale = d3.scale.linear()
    .domain([0, m])
    .range([-.1*sw, sw])

function line_maker( data ) {
    var freq = trib.omega * data.index
    var svgline = d3.svg.line()
        .x(function(d,i) {
            return xscale(d);
        })
        .y(function(d,i) {
            var th = d/m * trib.theta
            var ph = (n-data.index) * trib.phase
            var y = trib.amplitude * Math.sin(freq * th + ph );
            return y
        })
        .interpolate("basis")
        //.interpolate("linear")
    return svgline(data.data);
}

function lineenter(d, i) {
    d3.select(this).selectAll("path.path")
        .data([d])
        .enter()
    .append("svg:path")
        .attr("class", "path")
        .attr("stroke-width", trib.stroke_width)
        .attr("stroke", "#fff")
        .attr("fill", "none")
    update_spacing()
}

function update_spacing()
{
    var th = trib.spacing * n;
    var hscale = d3.scale.linear()
        .domain([0, n])
        .range([0, sh])
    d3.selectAll("g.line path")
        .attr("transform", function(d, i) { 
            //return "translate(" + [0, th - spacing * d.index] + ")"; 
            return "translate(" + [0, 10+sh/2 + th / 2 - trib.spacing * d.index] + ")"; 
        })
}

var svg = d3.select("svg")
  .append("svg:g")

var line = svg.selectAll("g.line")
    .data(lines)
  .enter().append("svg:g")
    .attr("class", "line")
    .each(lineenter);

  
d3.selectAll("g.line path") 
    .attr("d", function(d,i) {
        return line_maker(d) 
    })
    .attr("stroke", function(d,i) { return color(d.index);})
    .attr("opacity", trib.opacity);