tgs/README.md

## README.md

      
    Raw
  

              README.md
            
          
    Click it to make it go again.
A d3.js version of the "egyptian" effect used in Tron.  A few really fun pages
over here by GMUNK were
the inspiration.

  
## index.html
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<style>

body {
  margin: 0;
  background: #111;
  min-width: 960px;
}

line {
  fill: none;
}

</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="main.js"></script>
</body>
</html>

## main.js
var width = Math.max(960, innerWidth),
    height = Math.max(500, innerHeight);

var rectWave = [
    function(x, y) { return [x, y+this.size]; },
    function(x, y) { return [x+this.size, y]; },
    function(x, y) { return [x+this.size * 2, y]; },
    function(x, y) { return [x, y-this.size]; },
];

var triWave = [
    function(x, y) { return [x + this.size, y + this.size]; },
    function(x, y) { return [x + this.size, y]; },
    function(x, y) { return [x + this.size, y - this.size]; },
];

var n = 15, // Total number of fliers
    fadeTime = 500, // Time to fade between colors
    colors = ["#311", "blue"], // Two colors to fade between
    colorSwapChance = 0.0, // Try 0, 0.05, or 0.5!
    minSize = 2, // minimum line segment length
    maxSize = 10, // maximum line segment length
    waveFunction = rectWave;

var stop = 200;

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

function choose(ary) {
    return ary[Math.floor(Math.random()*ary.length)];
}

var fliers = d3.range(n).map(function(d) {
    var flier = {
        index: d,
        size: Math.random() * (maxSize - minSize) + minSize,
    };
    flier.next = function(x, y) {
        return choose(waveFunction).call(this, x, y);
    }.bind(flier);
    return flier;
});

var flier = svg.selectAll('line.head')
    .data(fliers);

function start() {
    svg.on("ontouchstart" in document ? "touchstart" : "mousedown", function() {});

    flier.enter()
        .append('line')
        .attr('class', 'head')
        .attr('x1', 0)
        .attr('y1', function(d) { return d.index * height / (n+1); })
        .attr('x2', 2)
        .attr('y2', function(d) { return d.index * height / (n+1); });
    stop = 200;

    d3.timer(function() {
        if (Math.random() < colorSwapChance) {
            colors = colors.reverse();
        }

        d3.selectAll('line.head')
            .data(fliers)
            .attr('class', 'tail')
            .transition()
            .duration(fadeTime)
            .styleTween('stroke', function() { return d3.interpolate.apply(this, colors); })
            .each(function(d) {
                var x1 = +this.getAttribute('x2'),
                    y1 = +this.getAttribute('y2'),
                    next = d.next(x1, y1);


                svg.append('line')
                    .attr('class', 'head')
                    .attr('x1', x1)
                    .attr('y1', y1)
                    .attr('x2', next[0])
                    .attr('y2', next[1]);
            })
            .remove();

        if (stop-- < 0) {
            d3.selectAll('line.head')
                .remove();
            svg.on("ontouchstart" in document ? "touchstart" : "mousedown", start);
            return true;
        }
    });
}

start();

## thumbnail.png

      
    Raw
  

              thumbnail.png
	<!DOCTYPE html>
	<html>
	<meta charset="utf-8">
	<style>

	body {
	margin: 0;
	background: #111;
	min-width: 960px;
	}

	line {
	fill: none;
	}

	</style>
	<body>
	<script src="http://d3js.org/d3.v3.min.js"></script>
	<script src="main.js"></script>
	</body>
	</html>
	var width = Math.max(960, innerWidth),
	height = Math.max(500, innerHeight);

	var rectWave = [
	function(x, y) { return [x, y+this.size]; },
	function(x, y) { return [x+this.size, y]; },
	function(x, y) { return [x+this.size * 2, y]; },
	function(x, y) { return [x, y-this.size]; },
	];

	var triWave = [
	function(x, y) { return [x + this.size, y + this.size]; },
	function(x, y) { return [x + this.size, y]; },
	function(x, y) { return [x + this.size, y - this.size]; },
	];

	var n = 15, // Total number of fliers
	fadeTime = 500, // Time to fade between colors
	colors = ["#311", "blue"], // Two colors to fade between
	colorSwapChance = 0.0, // Try 0, 0.05, or 0.5!
	minSize = 2, // minimum line segment length
	maxSize = 10, // maximum line segment length
	waveFunction = rectWave;

	var stop = 200;

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	function choose(ary) {
	return ary[Math.floor(Math.random()*ary.length)];
	}

	var fliers = d3.range(n).map(function(d) {
	var flier = {
	index: d,
	size: Math.random() * (maxSize - minSize) + minSize,
	};
	flier.next = function(x, y) {
	return choose(waveFunction).call(this, x, y);
	}.bind(flier);
	return flier;
	});

	var flier = svg.selectAll('line.head')
	.data(fliers);

	function start() {
	svg.on("ontouchstart" in document ? "touchstart" : "mousedown", function() {});

	flier.enter()
	.append('line')
	.attr('class', 'head')
	.attr('x1', 0)
	.attr('y1', function(d) { return d.index * height / (n+1); })
	.attr('x2', 2)
	.attr('y2', function(d) { return d.index * height / (n+1); });
	stop = 200;

	d3.timer(function() {
	if (Math.random() < colorSwapChance) {
	colors = colors.reverse();
	}

	d3.selectAll('line.head')
	.data(fliers)
	.attr('class', 'tail')
	.transition()
	.duration(fadeTime)
	.styleTween('stroke', function() { return d3.interpolate.apply(this, colors); })
	.each(function(d) {
	var x1 = +this.getAttribute('x2'),
	y1 = +this.getAttribute('y2'),
	next = d.next(x1, y1);


	svg.append('line')
	.attr('class', 'head')
	.attr('x1', x1)
	.attr('y1', y1)
	.attr('x2', next[0])
	.attr('y2', next[1]);
	})
	.remove();

	if (stop-- < 0) {
	d3.selectAll('line.head')
	.remove();
	svg.on("ontouchstart" in document ? "touchstart" : "mousedown", start);
	return true;
	}
	});
	}

	start();