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index.html
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index.html
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<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
<title>Contrapositive</title>
<link rel="stylesheet" href="lib/d3.slider/d3.slider.css"/>
<style>
.dance-floor {
border: solid 1px #000;
}
circle {
r: 25;
stroke: #000;
}
button {
margin-top: 50px;
}
#count-text {
margin-left: 10px;
}
#slider {
margin-top: 10px;
}
</style>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js" charset="utf-8"></script>
<script src="lib/d3.slider/d3.slider.js" charset="utf-8"></script>
<script src="actions.js" charset="utf-8"></script>
<script src="moves.js" charset="utf-8"></script>
<script src="dance.js" charset="utf-8"></script>
<script src="contra_set.js" charset="utf-8"></script>
</head>
<body>
</body>
<script>
var width = 750,
height = 650,
tau = 2*Math.PI;
var counts_per_second = 4,
taus_per_count = 1/8;
var dance = new Dance(true);
var radius = 100 / Math.sqrt(2);
var playing = false;
dance.addMove(new Allemande(8, 1, 35, dance.lastMoveEnding));
dance.addMove(new Circle(8, 1, radius, dance.lastMoveEnding));
dance.addMove(new Circle(4, -1, radius, dance.lastMoveEnding));
var dancerCount = 12;
var setCount = 3;
var contraSets = [];
var dancers = [];
for(var i = 0; i < setCount; i++) {
contraSets.push(new ContraSet(dance, dancerCount, 125 + (i * 250)));
Array.prototype.push.apply(dancers,contraSets[i].dancers);
}
var svg = d3.select("body").append("svg")
.classed("dance-floor", true)
.attr("width", width)
.attr("height", height);
var colors = d3.scale.category20();
var dots = svg.selectAll("circle")
.data(dancers)
.enter().append("circle")
.attr("fill", function(d) {
return colors(d.id);
});
var fullDanceLength = dance.duration * dancerCount;
var seek = function(e, val) {
play(false);
draw(val);
};
var axis = d3.svg.axis();
var slider = d3.slider()
.axis(axis).min(0).max(fullDanceLength)
.on("slide", seek);
var count_display = d3.select("body").append("div")
.style("width", width + "px")
.attr("id", "slider")
.call(slider);
var play = function(value) {
if(value === undefined) {
value = !playing;
}
playing = value;
d3.select("button").text(playing ? "❚❚ Pause" : "▶ Play");
if(value) {
d3.timer(createAnimate(slider.value()));
}
};
var pauseButton = d3.select("body").append("button")
.text("▶ Play").on("click", play);
var count_text = d3.select("body").append("span")
.attr("id", "count-text")
.text("0");
var previousMove = dance.currentMove(0)[0];
draw(0);
d3.timer(createAnimate(0));
function draw(count) {
dots.attr("cx", function(d) {
return d.contraSet.getX(count, d);
})
.attr("cy", function(d) {
return d.contraSet.getY(count, d);
});
count %= fullDanceLength;
slider.value(count);
count_text.text(Math.floor(count));
}
// I used a closure appropriately! -- jdherg
function createAnimate(initial) {
return function(elapsed) {
var count = initial + elapsed/1000 * counts_per_second;
if(playing) {
draw(count);
} else {
return true;
}
}
}
</script>
</html>