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jsconf.html
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<!doctype html>
<html>
<head>
<title>Underview: a data structure visualizer</title>
<script src="mori.js"></script>
<script src="Immutable.min.js"></script>
<script src="underview.js"></script>
<style type="text/css" media="screen">
.left {
background-color: #faffff;
}
.right {
background-color: #fffaff;
}
</style>
</head>
<body>
<div>
<button id="enqueue">Enqueue</button>
<button id="dequeue">Dequeue</button>
<button id="map_random">Map random</button>
<button id="map_sequential">Map sequential</button>
<button id="stop">Stop</button>
<button id="clear">Clear</button>
<button id="toggle_tree">Trees</button>
<button id="toggle_black">Boundaries</button>
</div>
<table border="0" cellspacing="0" cellpadding="10">
<tr>
<th class="left">Blue</th>
<th class="right">Red</th>
</tr>
<tr>
<td class="left"><canvas id="canvas_fb" width="600" height="480"></canvas></td>
<td class="right"><canvas id="canvas_mo" width="600" height="480"></canvas></td>
</tr>
<tr>
<td class="left"><canvas id="canvas_fb_tree" width="600" height="200"></canvas></td>
<td class="right"><canvas id="canvas_mo_tree" width="600" height="200"></canvas></td>
</tr>
</table>
<script>
/// steppers and goers
UV.add_stepper('queue_mo',
{ init: function() { return mori.queue() }
, step: function(data) {
data = mori.conj(data, rand())
// if(mori.count(data) > 250)
if(queue_switch)
data = mori.pop(data)
return data } } )
UV.add_stepper('queue_fb',
{ init: function() { return Immutable.Vector() }
, step: function(data) {
data = data.push(rand())
// if(data.length > 250)
if(queue_switch)
data = data.shift()
return data } } )
UV.add_stepper('map_mo_random',
{ init: function() { return mori.hash_map() }
, step: function(data) {
var n = rand(350) + 1
data = mori.assoc(data, 'a'+n, n)
return data } } )
UV.add_stepper('map_fb_random',
{ init: function() { return Immutable.Map() }
, step: function(data) {
var n = rand(350) + 1
data = data.set('a'+n, n)
return data } } )
UV.add_stepper('map_mo_sequential',
{ init: function() { return mori.hash_map() }
, step: function(data) {
var n = mori.count(data) + 1
data = mori.assoc(data, 'a'+n, n)
return data } } )
UV.add_stepper('map_fb_sequential',
{ init: function() { return Immutable.Map() }
, step: function(data) {
var n = data.length + 1
data = data.set('a'+n, n)
return data } } )
// go fun and dom bindings
var el = document.getElementById.bind(document)
var pipeline = ['flatten', 'valuation', 'colorize', 'shift-columns', 'draw-columns']
var ctxs = {}
ctxs.fb = el('canvas_fb').getContext('2d')
ctxs.mo = el('canvas_mo').getContext('2d')
ctxs.fb_tree = el('canvas_fb_tree').getContext('2d')
ctxs.mo_tree = el('canvas_mo_tree').getContext('2d')
var renderers = {}
renderers.fb = UV.build_renderer(pipeline, ctxs.fb)
renderers.mo = UV.build_renderer(pipeline, ctxs.mo)
var schedulers = {}
schedulers.fb = UV.build_scheduler(renderers.fb.draw)
schedulers.mo = UV.build_scheduler(renderers.mo.draw)
function clickit(elstr, fun) { el(elstr).addEventListener('click', function() { fun() }) }
function clearit(ctx) { ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height) }
clickit('enqueue', function() {
// schedulers.fb.onstep(function(_, n) {if(n > 245) schedulers.fb.stop()})
// schedulers.mo.onstep(function(_, n) {if(n > 245) schedulers.mo.stop()})
queue_switch = false
schedulers.fb.go('queue_fb')
schedulers.mo.go('queue_mo')
})
clickit('dequeue', function() {
// schedulers.fb.onstep(function(_, n) {if(n > 700) schedulers.fb.stop()})
// schedulers.mo.onstep(function(_, n) {if(n > 700) schedulers.mo.stop()})
queue_switch = true
schedulers.fb.go('queue_fb')
schedulers.mo.go('queue_mo')
})
clickit('map_random', function() {
schedulers.fb.go('map_fb_random')
schedulers.mo.go('map_mo_random')
})
clickit('map_sequential', function() {
schedulers.fb.go('map_fb_sequential')
schedulers.mo.go('map_mo_sequential')
})
clickit('clear', function() { clearit(ctxs.fb); clearit(ctxs.mo) })
clickit('stop', function() { schedulers.fb.stop(); schedulers.mo.stop() })
clickit('toggle_black', function() {
renderers.fb.set('valuation', 'black', !renderers.fb.get('valuation', 'black') )
// renderers.mo.set('valuation', 'black', !renderers.mo.get('valuation', 'black') )
})
// globals sorry ¯\_(ツ)_/¯
var queue_switch = false
var show_tree = false
clickit('toggle_tree', function() {show_tree = !show_tree})
schedulers.fb.onstep(function(data, n) {
if(!show_tree) return false
ctxs.fb_tree.clearRect(0,0,600,200)
draw_tree(data, ctxs.fb_tree, 0, 0)
})
schedulers.mo.onstep(function(data, n) {
if(!show_tree) return false
ctxs.mo_tree.clearRect(0,0,600,200)
draw_tree(data, ctxs.mo_tree, 0, 0)
})
</script>
</body>
</html>