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Tokyo railways demo
<!DOCTYPE html>
<html>
<head>
<meta name="description" content="[Tokyo railways]" />
<meta charset=utf-8 />
<meta name="viewport" content="user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, minimal-ui">
<title>Tokyo railways</title>
<link href="http://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet" />
<link href="http://cdnjs.cloudflare.com/ajax/libs/qtip2/2.2.0/jquery.qtip.min.css" rel="stylesheet" />
<link href="style.css" rel="stylesheet">
</head>
<body>
<div id="cy"></div>
<div id="loading">
<span class="fa fa-refresh fa-spin"></span>
</div>
<button id="clear">CLEAR</button>
<script src="http://cdnjs.cloudflare.com/ajax/libs/fastclick/1.0.3/fastclick.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<script src="http://cytoscape.github.io/cytoscape.js/api/cytoscape.js-latest/cytoscape.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/qtip2/2.2.0/jquery.qtip.min.js"></script>
<script src="https://cdn.rawgit.com/cytoscape/cytoscape.js-qtip/2.7.0/cytoscape-qtip.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/bluebird/1.2.2/bluebird.min.js"></script>
<script src="tokyo-railways.js"></script>
</body>
</html>
html, body {
font: 14px helvetica neue, helvetica, arial, sans-serif;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#cy {
position: absolute;
left: 0;
top: 0;
right: 0;
bottom: 0;
background: #000;
}
#loading {
position: absolute;
left: 0;
top: 50%;
width: 100%;
text-align: center;
margin-top: -0.5em;
font-size: 2em;
color: #fff;
}
#loading.loaded {
display: none;
}
button {
font-size: 2em;
background-color: #FC4C4C;
color: #fff;
border: 0;
cursor: pointer;
border-radius: 0.25em;
font-family: helvetica neue, helvetica, arial, sans-serif;
outline: 0;
}
#clear {
position: absolute;
right: 0;
top: 0;
margin: 0.25em;
visibility: hidden;
}
body.has-start #clear {
visibility: visible;
}
#end {
display: none;
}
body.has-start:not(.has-end) #end {
display: inline;
}
body.has-start:not(.has-end) #start {
display: none;
}
body.calc #loading {
display: block;
}
/*
This demo visualises the railway stations in Tokyo (東京) as a graph.
This demo gives examples of
- loading elements via ajax
- loading style via ajax
- using the preset layout with predefined positions in each element
- using motion blur for smoother viewport experience
- using `min-zoomed-font-size` to show labels only when needed for better performance
*/
$(function(){
// get exported json from cytoscape desktop via ajax
var graphP = $.ajax({
url: 'https://cdn.rawgit.com/maxkfranz/934042c1ecc464a8de85/raw', // tokyo-railways.json
type: 'GET',
dataType: 'json'
});
// also get style via ajax
var styleP = $.ajax({
url: 'https://cdn.rawgit.com/maxkfranz/2c23fe9a23d0cc8d43af/raw/6b4cd5f5f9eb9390c0600ad0ca11d4f51821feaf/gistfile1.txt', // tokyo-railways-style.cycss
type: 'GET',
dataType: 'text'
});
// when both graph export json and style loaded, init cy
Promise.all([ graphP, styleP ]).then(initCy);
function initCy( then ){
var loading = document.getElementById('loading');
var expJson = then[0];
var styleJson = then[1];
var elements = expJson.elements;
loading.classList.add('loaded');
var cy = window.cy = cytoscape({
container: document.getElementById('cy'),
layout: { name: 'preset' },
style: styleJson,
elements: elements,
motionBlur: true,
selectionType: 'single',
boxSelectionEnabled: false
});
mendData();
bindRouters();
}
function mendData(){
// because the source data doesn't connect nodes properly, use the cytoscape api to mend it:
cy.startBatch();
// put nodes in bins based on name
var nodes = cy.nodes();
var bin = {};
var metanames = [];
for( var i = 0; i < nodes.length; i++ ){
var node = nodes[i];
var name = node.data('station_name');
var nbin = bin[ name ] = bin[ name ] || [];
nbin.push( node );
if( nbin.length === 2 ){
metanames.push( name );
}
}
// connect all nodes together with walking edges
for( var i = 0; i < metanames.length; i++ ){
var name = metanames[i];
var nbin = bin[ name ];
for( var j = 0; j < nbin.length; j++ ){
for( var k = j + 1; k < nbin.length; k++ ){
var nj = nbin[j];
var nk = nbin[k];
cy.add({
group: 'edges',
data: {
source: nj.id(),
target: nk.id(),
is_walking: true
}
});
//.css({
// 'line-color': 'yellow'
// });
}
}
}
cy.endBatch(); //.autolock( true );
}
var start, end;
var $body = $('body');
function selectStart( node ){
clear();
$body.addClass('has-start');
start = node;
start.addClass('start');
}
function selectEnd( node ){
$body.addClass('has-end calc');
end = node;
cy.startBatch();
end.addClass('end');
setTimeout(function(){
var aStar = cy.elements().aStar({
root: start,
goal: end,
weight: function( e ){
if( e.data('is_walking') ){
return 0.25; // assume very little time to walk inside stn
}
return e.data('is_bullet') ? 1 : 3; // assume bullet is ~3x faster
}
});
if( !aStar.found ){
$body.removeClass('calc');
clear();
cy.endBatch();
return;
}
cy.elements().not( aStar.path ).addClass('not-path');
aStar.path.addClass('path');
cy.endBatch();
$body.removeClass('calc');
}, 300);
}
function clear(){
$body.removeClass('has-start has-end');
cy.elements().removeClass('path not-path start end');
}
function bindRouters(){
var $clear = $('#clear');
cy.nodes().qtip({
content: {
text: function(){
var $ctr = $('<div class="select-buttons"></div>');
var $start = $('<button id="start">START</button>');
var $end = $('<button id="end">END</button>');
$start.on('click', function(){
var n = cy.$('node:selected');
selectStart( n );
n.qtip('api').hide();
});
$end.on('click', function(){
var n = cy.$('node:selected');
selectEnd( n );
n.qtip('api').hide();
});
$ctr.append( $start ).append( $end );
return $ctr;
}
},
show: {
solo: true
},
position: {
my: 'top center',
at: 'bottom center',
adjust: {
method: 'flip'
}
},
style: {
classes: 'qtip-bootstrap',
tip: {
width: 16,
height: 8
}
}
});
$clear.on('click', clear);
}
});
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