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index2.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>
</head>
<body>
<canvas id="canvas" width="800" height="680"></canvas>
<div style="float:right">
<p><button id="queue_mori">Mori Queue</button></p>
<p><button id="map_mori_random">Mori Map random</button></p>
<p><button id="map_mori_sequential">Mori Map sequential</button></p>
<p><button id="vector_fb">FB Vector queue</button></p>
<p><button id="map_fb_random">FB Map random</button></p>
<p><button id="map_fb_sequential">FB Map sequential</button></p>
<hr />
<p><button id="stop">Stop!</button></p>
<p><button id="toggle_black">Toggle black</button></p>
<p>Sat: <input type="range" id="sat_value" value="0" max="50"></p>
<p>Lit: <input type="range" id="lit_value" value="20" max="60"></p>
<p>Spd: <input type="range" id="spd_value" value="30" max="200"></p>
</div>
<script>
/// steppers and goers
UV.add_stepper('queue_mori',
{ init: function() { return mori.queue() }
, step: function(data) {
data = mori.conj(data, rand())
if(mori.count(data) > 200)
data = mori.pop(data)
return data } } )
UV.add_stepper('map_mori_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_mori_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('vector_fb',
{ init: function() { return Immutable.Vector() }
, step: function(data) {
data = data.push(rand())
if(data.length > 360)
data = data.shift()
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_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 ctx = el('canvas').getContext('2d')
var pipeline = ['flatten', 'valuation', 'colorize', 'shift-columns', 'draw-columns']
var renderer = UV.build_renderer(pipeline, ctx)
var scheduler = UV.build_scheduler(renderer.draw)
function clickit(elstr, fun) { el(elstr).addEventListener('click', function() { fun() }) }
function makego(stepper_name) {
var stepper = UV.steppers[stepper_name]
return partial(scheduler.go, stepper)
}
Object.keys(UV.steppers).forEach(function(key) {
clickit(key, makego(key))
})
// other controls
clickit('stop', scheduler.stop)
clickit('toggle_black', function() { renderer.set('valuation', 'black', !renderer.get('valuation', 'black') ) })
function changeit(elstr, fun) { el(elstr).addEventListener('change', function(x) { fun(x) }) }
changeit('sat_value', function(elem) { renderer.set('valuation', 'sat', elem.target.value) })
changeit('lit_value', function(elem) { renderer.set('valuation', 'lit', elem.target.value) })
changeit('spd_value', function(elem) { scheduler.speed(elem.target.value) })
////////////////////////
XSIZE=3
YSIZE=1
function draw_tree(data, context, x, y) {
x = x || 0
y = y || 0
var todo = [data, NaN]
var longest = Object.keys(data).length
var maxes = [longest]
var generation = 0
var min_y = y
while(todo.length) {
var data = todo.shift() // opt
if(data !== data) {
if(!todo.length) return true
maxes.push(longest)
x += XSIZE * maxes[generation] + XSIZE
longest = 0
y = min_y
generation++
todo.push(NaN)
}
if(!data || typeof data != 'object') continue
draw_list(data, context, x, y)
y += YSIZE * 1
// var count = 0
var keys = Object.keys(data)
// var len = keys.length
keys.forEach(function(key) {
if(data[key] && typeof data[key] == 'object') {
todo.push(data[key])
longest = Math.max(longest, Object.keys(data[key]).length)
// count++
// draw_tree(data[key], context, x + len, y + count*15)
}
})
}
}
function draw_list(data, context, x, y) {
var index = 0
Object.keys(data).forEach(function(key) {
var item = data[key]
var hue = 0, sat = '0%', lit = '0%'
if(item && isFinite(item)) {
hue = item || 0
sat = '60%'
lit = '60%'
}
if(typeof item == 'string') {
lit = '80%'
sat = '100%'
hue = 100
}
if(item && typeof item == 'object') {
lit = '80%'
sat = '100%'
hue = 200
}
var c = 'hsl(' + hue + ', ' + sat + ', ' + lit + ')'
context.fillStyle = c
context.fillRect(+x+index*XSIZE, y, XSIZE, YSIZE);
index++
})
}
/*
- spacing for subsections
- try for linked lists
- find a vlist implementation
- linked canvases: to data display, from compact timeline
sliders for colors:
- hot pink for pointers
- neon blue for nulls
- ghostly orange for strings
times = function(n) {if(n < 1) return false; setImmediate(function() {go(); times(n-1)})}
go = function() {var n = rand(350000) + 1
data = data.set('a'+n, n)
ctx.clearRect(0,0,900,900); draw_tree(data, ctx, 20, 0);}
data = new Immutable.Map()
///////
go = function() {var n = rand(350000) + 1
data = mori.assoc(data, 'a'+n, n)
ctx.clearRect(0,0,900,900); draw_tree(data, ctx, 20, 0);}
data = mori.hash_map()
///////
data1 = mori.hash_map()
data2 = new Immutable.Map()
go = function() {var n = rand(350000) + 1
data2 = data2.set('a'+n, n)
data1 = mori.assoc(data1, 'a'+n, n)
ctx.clearRect(0,0,900,900)
draw_tree(data1, ctx, 0, 0)
draw_tree(data2, ctx, 450, 0)}
*/
</script>
</body>
</html>