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alpha.html
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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Glyph learner</title>
<meta name="viewport" content="width=device-width, user-scalable=no">
<link rel='shortcut icon' type='image/x-icon' href='glyph.ico' />
<script src="glyphs.js"></script>
<script src="gremlins.min.js"></script>
<!--
Create new list of glyphs:
JSON.stringify(glyphs.sort(function(a,b){return a.family.localeCompare(b.family);}),function(key,value){if(key=='strokes')return undefined; else return value;})
Sort glyphs by family, then name[0]:
glyphs.sort(function(a,b){var c=a.family.localeCompare(b.family);if(c==0)c=a.name[0].localeCompare(b.name[0]);return c;})
-->
<style>
body {
background-color: #000;
}
svg {
position: relative;
}
.drawsvg {
background: url("background.png");
background-size: contain;
}
#adiv {
text-shadow: 0 0 6px #6be7bd;
background-color: #000;
color: #6be7bd;
font-size: 20pt;
text-align: center;
font-family: sans-serif;
font-weight: 200;
}
path {
stroke-linecap: round;
stroke-linejoin: round;
}
text {
font-family: sans-serif;
font-size: 20pt;
stroke-width: 0;
stroke: none;
fill: #8CEBCE;
}
.btn {
border: solid 2px #00f3ff;
background-color: #19454a;
background: linear-gradient(to bottom, #08757b 0%,#1f464a 20%,#1f464a 80%,#08757b 100%);
color: #8cffff;
padding: 10px;
float: right;
font-size: 10pt;
font-family: sans-serif;
font-weight: bold;
margin-left: 5px;
text-shadow: 0px 0px 3px #08757b;
/*-webkit-transform: scale(1,1.4);
font-weight: normal;*/
}
.lbtn {
border: solid 3px #00f3ff;
background-color: #19454a;
color: #8cffff;
padding: 10px;
font-size: 10pt;
font-family: sans-serif;
font-weight: bold;
width: inherit;
margin-top: 3px;
}
.text {
color: #6be7c5;
text-align: center;
font-family: sans-serif;
}
.text a {
color: #00833b;
}
.badge {
float: right;
border: 1px solid #B1B100;
display: block;
width: 10px;
height: 10px;
background-color: #474716;
margin-left: 5px;
}
.steel {
border: 1px solid #000;
background-color: #474747;
}
.bigselect {
width: 100%;
height: 9vw;
border: 3px solid #6be7c5;
background-color: #000;
color: #6be7c5;
font-family: sans-serif;
font-size: 5vw;
text-align: center;
}
.glyphCircle {
fill: #ffd700;
}
.backbtn {
background: linear-gradient(to bottom, #08757b 0%,#1f464a 20%,#1f464a 80%,#08757b 100%);
border: 3px solid #6be7c5;
color: #6be7c5;
font-family: sans-serif;
font-size: 5vw;
position: absolute;
right: 3px;
padding: 0px 20px 0px 20px;
display: none;
}
</style>
</head>
<body>
<div class="backbtn" onclick="showMenu()" id="backbutton"><</div>
<div id="progress-container" style="width:80px; height:10px; border:1px solid #00e969; margin:3px; position: fixed; right: 0px; display: none">
<div id="progress-bar" style="width:70%; background-image:linear-gradient( 90deg, #00833b, #00ef73 ); height:inherit; float: left"></div>
<div id="anti-progress-bar" style="width:30%; background-image:linear-gradient( 90deg, #520000, #840000 ); height:inherit; float: left"></div>
</div>
<div id="spacer" class="text"></div>
<div style="background: #000" width="100%" id="adiv" onclick="textClick()">UNKNOWN</div>
<svg xmlns="http://www.w3.org/2000/svg" width="50" height="52" id="glyphsvg" class="drawsvg">
<g id="drawCircleGroup" >
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle0" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle1" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle2" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle3" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle4" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle5" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle6" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle7" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle8" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle9" />
<circle cx="0" cy="0" r="0" pointer-events="none" class="glyphCircle" style="display:none" id="glyphCircle10" />
</g>
<path id="p" stroke="#aef" stroke-width="2" fill="none" pointer-events="none"/>
</svg>
<div style='overflow:auto' id="mainButtons">
<div class="btn" onclick="showNextGlyph()" id="nextBtn">NEXT</div>
<div class="btn" onclick="showCurrentGlyph()" id="showButton">SHOW</div>
<div class="btn" onclick="showMenu()" id="lessonsButton" style="float: left;margin-left:0px">MENU</div>
</div>
<div id="menudiv" style="display:none">
<div class="lbtn" onclick="showLessons()" >Lessons</div>
<div class="lbtn" onclick="showList()" >Glyph list</div>
<div class="lbtn" onclick="showDrag()" >Glyphs thingy</div>
<div class="text" id="aboutdiv"><br/>About:<br/>Version: 1.05<br/>Feedback: <a href="mailto:[email protected]">[email protected]</a><br/>Bugtracker <a href="https://github.com/jokedst/jokedst.github.io/issues">at github</a></div>
</div>
<div id='LessonsDiv' style='display:none'>
<div class="lbtn" onclick="startLesson(-1)" >No lesson - free play!</div>
</div>
<div id="glyphList" style="display:none">
<select class="bigselect" onchange="resort(this.value)">
<option value="glyph">by glyph size</option>
<option value="lesson">by lesson</option>
<option value="name">by name</option>
</select>
<svg id="listsvg" >
<linearGradient id="g1" x1="0" y1="0" x2="0" y2="1">
<stop offset="0" stop-color="#427563"/>
<stop offset="50%" stop-color="#31514A"/>
<stop offset="100%" stop-color="#427563"/>
</linearGradient>
<g id="glyphListGroup"></g>
</svg>
<div class="btn" onclick="showMenu()" style="float: left;margin-left:0px">MENU</div>
</div>
<div id="glyphdragdiv" style="display: none" viewBox="0 0 500 500">
<svg id="glyphdragsvg" >
<linearGradient id="g2" x1="0" y1="0" x2="0" y2="1">
<stop offset="0" stop-color="#427563"/>
<stop offset="50%" stop-color="#31514A"/>
<stop offset="100%" stop-color="#427563"/>
</linearGradient>
<g id="glyphdragcanvas" stroke="#8CEBCE"></g>
</svg>
</div>
<script>
var r = document.getElementById('glyphsvg'),
p = document.getElementById('p'),
txt = document.getElementById('adiv'),
drawnPath = '',
isDown = false,
points = [], starti=0, stopi=0,
cutoff = 1000;
var targets = [{ x: 250, y: 30 },
{ x: 54, y: 143 },
{ x: 446, y: 143 },
{ x: 152, y: 200 },
{ x: 348, y: 200 },
{ x: 250, y: 257 },
{ x: 152, y: 313 },
{ x: 348, y: 313 },
{ x: 54, y: 370 },
{ x: 446, y: 370 },
{ x: 250, y: 483 }];
var drawcolor = { r: 255, g: 255, b: 0 },
okcolor = { r: 50, g: 255, b: 50 },
badcolor = { r: 255, g: 50, b: 50 };
var strokes = {};
var glyph = null,
glyphsShown = 0;
var lastTouchedTarget = -1,
vibrateOn = true;
var vibrate = navigator.vibrate || navigator.mozVibrate || navigator.webkitVibrate || null;
var currentLesson = -1, lesson = {};
var results = {},
settings = {},
glyphlookup = {},
startedGlyph = Date.now();
Storage.prototype.setObject = function(key, value) {
this.setItem(key, JSON.stringify(value));
};
Storage.prototype.getObject = function(key) {
var value = this.getItem(key);
return value && JSON.parse(value);
};
function setProgressBar(percent) {
percent = Math.floor(percent);
document.getElementById('anti-progress-bar').style.width = (100 - percent) + '%';
document.getElementById('progress-bar').style.width = percent + '%';
document.getElementById('progress-container').style.display = '';
}
function hideProgressBar() {
document.getElementById('progress-container').style.display = 'none';
}
function interpolateColor(from, to, delta) {
var red = Math.round((from.r * (1.0 - delta)) + (to.r * delta));
var green = Math.round((from.g * (1.0 - delta)) + (to.g * delta));
var blue = Math.round((from.b * (1.0 - delta)) + (to.b * delta));
return 'rgb(' + red + ',' + green + ',' + blue + ')';
}
function obj2col(color) {
var s = 'rgb(' + color.r + ',' + color.g + ',' + color.b + ')';
return s;
}
function cssrules() {
var rules = {}; var ds = document.styleSheets, dsl = ds.length;
for (var i = 0; i < dsl; ++i) {
var dsi = ds[i].cssRules, dsil = dsi.length;
for (var j = 0; j < dsil; ++j) rules[dsi[j].selectorText] = dsi[j];
}
return rules;
};
function css_getclass(name) {
var ds = document.styleSheets;
for (var i = 0, dsl = ds.length; i < dsl; ++i) {
var dsi = ds[i].cssRules;
for (var j = 0, dsil = dsi.length; j < dsil; ++j) {
if (dsi[j].selectorText == name)
return dsi[j];
}
}
return null;
};
function randomizeArray(myArray) {
var i = myArray.length;
if (i == 0) return [];
while (--i) {
var j = Math.floor(Math.random() * (i + 1));
var tempi = myArray[i];
var tempj = myArray[j];
myArray[i] = tempj;
myArray[j] = tempi;
}
return myArray;
};
window.onload = function () {
// This is a bunch of 'adapt to resolution' crap. Works sometimes :)
var w = document.getElementById('adiv').offsetWidth;
var h = Math.round(w * 518 / 500);
var winh = window.innerHeight;
// Detect landscape view
if (winh < h * 1.2) {
w = Math.round(winh *0.8 * 500 / 518);
h = Math.round(w * 518 / 500);
}
console.log(w);
r.style.width = w + 'px';
r.style.height = h + 'px';
// The cutoff is squared to avoid sqrt later
cutoff = Math.pow(w * 30.0 / 500.0, 2);
console.log('winh: ' + winh);
var circleSize = 12 * w / 500.0;
// Scale the target locations to new resolution
for (var t in targets) {
targets[t].x *= w / 500.0;
targets[t].y *= w / 500.0;
var circle = document.getElementById('glyphCircle' + t);
circle.setAttribute('cx', targets[t].x);
circle.setAttribute('cy', targets[t].y);
circle.setAttribute('r', circleSize);
}
p.style.strokeWidth = Math.round(w / 50);
txt.style.fontSize = Math.round(w / 10) + 'px';
var txth = txt.offsetHeight;
var z = w * 0.128;
var btnstyle = css_getclass('.btn').style;
btnstyle.fontSize = Math.round(z / 3) + 'px';
btnstyle.padding = Math.round(z / 3) + 'px';
var btnh = document.getElementById('nextBtn').offsetHeight;
console.log('winh: ' + winh + ', btnh: ' + btnh + ', ' + ', txth: ' + txth);
console.log('toth: ' + (btnh + txth + h));
console.log('left: ' + (winh - (btnh + txth + h)));
document.getElementById('spacer').style.height = (winh - (btnh + txth + h) - 30) + 'px';
// Build up the lessons buttons
var lessonsDiv = document.getElementById('LessonsDiv');
for (var l in lessons) {
//var lessonNumber = l;
var btn = document.createElement("div");
btn.appendChild(document.createTextNode(lessons[l].name));
btn.className = 'lbtn';
btn.id = 'lessonButton' + l;
//btn.onclick = function () { var lessonNumber = l; startLesson(lessonNumber); };
btn.setAttribute('onClick', 'startLesson(' + l + ')');
lessonsDiv.appendChild(btn);
lessons[l].glyphs = [];
}
// Figure out shich strokes make up each glyph (e.g. 'f1t4' = from 1 to 4)
for (var g in glyphs) {
glyphs[g].strokes = {};
var lastt = glyphs[g].points[0];
for (var i = 1; i < glyphs[g].points.length; i++) {
var next = glyphs[g].points[i];
// To avoid dupes always take lowest number fist
glyphs[g].strokes['f' + Math.min(lastt, next) + 't' + Math.max(lastt, next)] = 1;
lastt = next;
}
// Set glyph id
glyphs[g].id = strokes2id(glyphs[g].strokes);
glyphlookup[glyphs[g].id] = glyphs[g];
// Add glyph to correct lesson
for (l = 0; l < lessons.length; l++) {
if (lessons[l].family == glyphs[g].family) {
lessons[l].glyphs.push(glyphs[g]);
break;
}
}
}
var hmirror = findTransformedGlyphs(mirrorHorizontalMatrix),
vmirror = findTransformedGlyphs(mirrorVerticalMatrix),
rmirror = findTransformedGlyphs(rotate90Matrix);
for (var m in hmirror) {
(glyphlookup[m].mirrors || (glyphlookup[m].mirrors = {}))[hmirror[m]] = 1;
(glyphlookup[hmirror[m]].mirrors || (glyphlookup[hmirror[m]].mirrors = {}))[m] = 1;
}
for (m in vmirror) {
(glyphlookup[m].mirrors || (glyphlookup[m].mirrors = {}))[vmirror[m]] = 1;
(glyphlookup[vmirror[m]].mirrors || (glyphlookup[vmirror[m]].mirrors = {}))[m] = 1;
}
for (m in rmirror) {
(glyphlookup[m].mirrors || (glyphlookup[m].mirrors = {}))[rmirror[m]] = 1;
(glyphlookup[rmirror[m]].mirrors || (glyphlookup[rmirror[m]].mirrors = {}))[m] = 1;
}
// Load old results (if any)
results = window.localStorage.getObject('results') || {};
settings = window.localStorage.getObject('settings') || {}; // An empty object means default settings
// Google analytics
(function(i, s, o, g, r, a, m) {
i['GoogleAnalyticsObject'] = r;
i[r] = i[r] || function() {
(i[r].q = i[r].q || []).push(arguments)
}, i[r].l = 1 * new Date();
a = s.createElement(o),
m = s.getElementsByTagName(o)[0];
a.async = 1;
a.src = g;
m.parentNode.insertBefore(a, m)
})(window, document, 'script', 'http://www.google-analytics.com/analytics.js', 'ga');
ga('create', 'UA-48558197-1', 'jokedst.github.io');
ga('send', 'pageview');
// DEBUG
//showList();
showDrag();
};
function setMode(name) {
document.getElementById('mainButtons').style.display = 'none';
document.getElementById('glyphsvg').style.display = 'none';
document.getElementById('spacer').style.display = 'none';
document.getElementById('LessonsDiv').style.display = 'none';
document.getElementById('menudiv').style.display = 'none';
document.getElementById('glyphList').style.display = 'none';
document.getElementById('backbutton').style.display = 'none';
document.getElementById('glyphdragdiv').style.display = 'none';
hideProgressBar();
switch(name) {
case 'draw':
document.getElementById('mainButtons').style.display = '';
document.getElementById('glyphsvg').style.display = '';
document.getElementById('spacer').style.display = '';
break;
case 'lessons':
document.getElementById('LessonsDiv').style.display = '';
document.getElementById('backbutton').style.display = 'block';
break;
case 'menu':
document.getElementById('menudiv').style.display = '';
break;
case 'list':
document.getElementById('glyphList').style.display = '';
document.getElementById('backbutton').style.display = 'block';
break;
case 'drag':
document.getElementById('glyphdragdiv').style.display = '';
document.getElementById('backbutton').style.display = 'block';
break;
}
}
function showMenu() {
txt.textContent = 'MENU';
setMode('menu');
}
function createGlyph(svgObject, points, x, y, scale, name) {
if (typeof svgObject === 'string')
svgObject = document.getElementById(svgObject);
var group = document.createElementNS("http://www.w3.org/2000/svg", "g");
group.setAttribute('stroke', '#8CEBCE');
var frame = document.createElementNS("http://www.w3.org/2000/svg", 'polygon');
frame.setAttribute('fill', 'url(#g1)');
frame.setAttribute('stroke-width', '4');
frame.setAttribute('points', '50,0 100,28.8675135 100,86.6025404 50,115.4700538 0,86.6025404 0,28.8675135');
group.appendChild(frame);
var path = document.createElementNS("http://www.w3.org/2000/svg", 'path');
path.setAttribute('fill', 'none');
path.setAttribute('stroke-width', '5');
var ret = 'M' + targ[points[0]].x + ',' + targ[points[0]].y;
for (var i = 1; i < points.length; i++) {
ret += ' L' + targ[points[i]].x + ',' + targ[points[i]].y;
}
path.setAttribute('d', ret);
group.appendChild(path);
var textSpan = document.createElementNS("http://www.w3.org/2000/svg", 'text');
textSpan.appendChild(document.createTextNode(name));
textSpan.setAttribute('x', '110');
textSpan.setAttribute('y', '65');
group.appendChild(textSpan);
group.setAttribute('transform', 'translate(' + x + ',' + y + ')' + (scale ? ' scale(' + scale + ')' : ''));
svgObject.appendChild(group);
}
var listDrawn = false, lessonLookup;
function showList() {
txt.textContent = 'GLYPHS';
setMode('list');
if (!listDrawn) {
resort('glyph');
//var svg = document.getElementById('glyphListGroup');
//var size = Math.floor(window.innerWidth / 6);
//document.getElementById('listsvg').style.height = Math.floor(glyphs.length * size * 0.95 + size);
//for (var g = 0; g < glyphs.length; g++)
// createGlyph(svg, glyphs[g].points, Math.round(10+ + (g % 2) * size*0.55), Math.floor(5 + g*size*0.95), (size / 100), glyphs[g].name.join('/').toUpperCase());
//svg.style.height = glyphs.length * 95 + 100;
//for (var g = 0; g < glyphs.length; g++)
// createGlyph(svg, glyphs[g].points, 10 + (g % 2) * 55, 5 + g * 95, 1, glyphs[g].name.join('/').toUpperCase());
//svgRoot.appendChild(svg);
listDrawn = true;
}
}
function resort(type) {
console.log(type);
//var ids = glyphs.map(function (g) { return g.id; });
var svg = document.getElementById('glyphListGroup');
while (svg.lastChild) {
svg.removeChild(svg.lastChild);
}
var size = Math.floor(window.innerWidth / 6);
switch (type) {
case 'lesson':
if (!lessonLookup) {
lessonLookup = {};
for (var g in glyphs) {
var group = (lessonLookup[glyphs[g].family] || (lessonLookup[glyphs[g].family] = []));
group.push(glyphs[g]);
}
}
document.getElementById('listsvg').style.height = Math.floor(glyphs.length * size * 0.95 + size + lessons.length * size * 0.77);
var thisy = 0;
for (var l in lessons) {
var textSpan = document.createElementNS("http://www.w3.org/2000/svg", 'text');
textSpan.appendChild(document.createTextNode(lessons[l].name));
textSpan.setAttribute('x', '10');
textSpan.setAttribute('y', Math.round(thisy + size * 0.6));
svg.appendChild(textSpan);
thisy += size * 0.77;
for (var z in lessonLookup[lessons[l].family]) {
var lg = lessonLookup[lessons[l].family][z];
createGlyph(svg,
lg.points,
Math.round(10 + (z % 2) * size * 0.55),
Math.floor(thisy),
(size / 100),
lg.name.join('/').toUpperCase()
);
thisy += size * 0.95;
}
}
for (var g = 0; g < g2.length; g++)
createGlyph(svg, g2[g].points, Math.round(10 + +(g % 2) * size * 0.55), Math.floor(5 + g * size * 0.95), (size / 100), g2[g].name.join('/').toUpperCase());
break;
case 'name':
// We add each glyph possibly several times, once for each name
var g2 = [];
for (var g in glyphs) {
g2.push(glyphs[g]);
for (var x = 1; x < glyphs[g].name.length; x++) {
var fakeGlyph = { points: glyphs[g].points, name: glyphs[g].name.slice() };
// Move this name to the front
fakeGlyph.name.unshift(fakeGlyph.name.splice(x, 1)[0]);
g2.push(fakeGlyph);
}
}
g2.sort(function(a, b) {
return a.name[0].localeCompare(b.name[0]);
});
document.getElementById('listsvg').style.height = Math.floor(g2.length * size * 0.95 + size);
for (var g = 0; g < g2.length; g++)
createGlyph(svg, g2[g].points, Math.round(10 + +(g % 2) * size * 0.55), Math.floor(5 + g * size * 0.95), (size / 100), g2[g].name.join('/').toUpperCase());
break;
case 'glyph':
var g2 = glyphs.slice().sort(function (a, b) {
var c = Object.keys(a.strokes).length - Object.keys(b.strokes).length;
if (c != 0) return c;
// Put closed before unclosed glyphs
var aclosed = a.points[0] == a.points[a.points.length - 1];
var bclosed = b.points[0] == b.points[b.points.length - 1];
if (aclosed != bclosed) return aclosed ? -1 : 1;
// mirror images should be put next to each other, so sort by 'lowest mirror' id
var aid = a.mirrors ? Object.keys(a.mirrors).concat(a.id).sort()[0] : a.id;
var bid = b.mirrors ? Object.keys(b.mirrors).concat(b.id).sort()[0] : b.id;
return aid.localeCompare(bid);
});
document.getElementById('listsvg').style.height = Math.floor(g2.length * size * 0.95 + size);
for (var g = 0; g < g2.length; g++)
createGlyph(svg, g2[g].points, Math.round(10 + +(g % 2) * size * 0.55), Math.floor(5 + g * size * 0.95), (size / 100), g2[g].name.join('/').toUpperCase());
break;
default:
}
}
function showLessons() {
txt.textContent = 'LESSONS';
setMode('lessons');
// Update achievements
var oldBadges = document.getElementsByClassName('badge');
for (var b = oldBadges.length; b > 0; b--) {
var badge = oldBadges[b-1];
badge.parentNode.removeChild(badge);
}
if (results && results.lesson) {
for (var l = 0; l < lessons.length; l++) {
var lesson = results.lesson[l];
if (lesson && (lesson.flawless || lesson.completed)) {
var goldbadges = Math.min(results.lesson[l].flawless || 0, 3);
var blackbadges = Math.min(results.lesson[l].completed || 0, 3 - goldbadges);
var badges = goldbadges + blackbadges;
for (var i = 0; i < badges; i++) {
var ld = document.getElementById('lessonButton' + l);
var achive = document.createElement("div");
achive.className = 'badge' + (i >= goldbadges ? ' steel' : '');
ld.appendChild(achive);
}
}
}
}
}
function startLesson(l) {
console.log('Starting lesson ' + l);
currentLesson = l;
document.getElementById('mainButtons').style.display = '';
document.getElementById('glyphsvg').style.display = '';
document.getElementById('spacer').style.display = '';
document.getElementById('LessonsDiv').style.display = 'none';
if (l == -1) {
// Free play!
document.getElementById('spacer').textContent = '';
txt.textContent = 'UNKNOWN';
hideProgressBar();
return;
}
lesson = { glyphsleft: randomizeArray(lessons[l].glyphs.slice(0)), peeked: false, glyphCount: lessons[l].glyphs.length, flawless: true };
document.getElementById('spacer').textContent = lessons[l].name.toUpperCase();
setProgressBar(0);
showNextGlyph();
}
function isTouchEvent(e) {
return e.type.match(/^touch/);
}
function _pointOnLine(line1, line2, pt) {
var isValid = false;
var ret = { x: 0, y: 0 };
// handle straight lines specially
if (line1.x == line2.x) {
ret = { x: line1.x, y: pt.y };
} else if (line1.y == line2.y) {
ret = { x: pt.x, y: line1.y };
} else {
var u = ((pt.x - line1.x) * (line2.x - line1.x)) + ((pt.y - line1.y) * (line2.y - line1.y));
var udenom = Math.pow(line2.x - line1.x, 2) + Math.pow(line2.y - line1.y, 2);
u /= udenom;
ret.x = line1.x + (u * (line2.x - line1.x));
ret.y = line1.y + (u * (line2.y - line1.y));
}
// if point is outside line segment, move to closest endpoint
if (line1.x < line2.x) {
if (ret.x < line1.x) {
return { x: line1.x, y: line1.y };
}
if (ret.x > line2.x) {
return { x: line2.x, y: line2.y };
}
} else if (line1.x > line2.x) {
if (ret.x > line1.x) {
return { x: line1.x, y: line1.y };
}
if (ret.x < line2.x) {
return { x: line2.x, y: line2.y };
}
}
if (line1.y < line2.y) {
if (ret.y < line1.y) {
return { x: line1.x, y: line1.y };
}
if (ret.y > line2.y) {
return { x: line2.x, y: line2.y };
}
} else if (line1.y > line2.y) {
if (ret.y > line1.y) {
return { x: line1.x, y: line1.y };
}
if (ret.y < line2.y) {
return { x: line2.x, y: line2.y };
}
}
return ret;
// This below if you want to send NULL if the point is outside the line
//var minx, maxx, miny, maxy;
//minx = Math.min(line1.x, line2.x);
//maxx = Math.max(line1.x, line2.x);
//miny = Math.min(line1.y, line2.y);
//maxy = Math.max(line1.y, line2.y);
//// if outside the segment, move inside
//if (ret.x >= minx && ret.x <= maxx) {
// // TODO
//}
//isValid = (ret.x >= minx && ret.x <= maxx) && (ret.y >= miny && ret.y <= maxy);
//return isValid ? ret : null;
}
function points2path(start, end, verbose) {
if (verbose) console.log('p2p s:' + start + " e:" + end);
if (start >= end) return 'M0,0';
var ret = '', first = true;
var lastp = { x: -1, y: -1 };
for (var i = start; i < end; i++) {
if (points[i] === undefined) {
console.log('wtf? ' + start + ',' + end);
}
if (first)
ret += 'M' + points[i].x + ',' + points[i].y + ' ';
else {
if (points[i].x != lastp.x || points[i].y != lastp.y)
ret += 'L' + points[i].x + ',' + points[i].y + ' ';
}
lastp = points[i];
first = false;
}
if (verbose) console.log(ret);
return ret.length > 0 ? ret : 'M0,0';
}
function getCoords(e, that) {
var rel = that || r;
if (isTouchEvent(e)) {
return { x: (e.targetTouches[0].pageX - rel.offsetLeft), y: (e.targetTouches[0].pageY - rel.offsetTop) };
//return e.targetTouches[0].clientX + ',' + e.targetTouches[0].clientY;
}
//console.log(e.clientX + ',' + e.pageX + ',' + r.offsetLeft);
//console.log(e.clientY + ',' + e.pageY + ',' + that.offsetTop);
return { x: (e.pageX - rel.offsetLeft), y: (e.pageY - rel.offsetTop) };
//return (e.pageX - r.offsetLeft) + ',' + (e.pageY - r.offsetTop);
//return e.clientX + ',' + e.clientY;
}
function down(e) {
var point = getCoords(e);
points = [point];
strokes = {};
glyph = null;
lastTouchedTarget = -1;
drawnPath = 'M' + point.x + ',' + point.y + ' ';
p.setAttribute('stroke', obj2col(drawcolor));
p.setAttribute('d', points2path(0, points.length));
isDown = true;
// Hide all cicles
for (var t in targets) {
document.getElementById('glyphCircle' + t).style.display = 'none';
}
if (isTouchEvent(e)) e.preventDefault();
}
function move(e) {
if (isDown) {
var point = getCoords(e);
points.push(point);
drawnPath += 'L' + point.x + ',' + point.y + ' ';
//drawnPath += 'L' + getCoords(e, this) + ' ';
//p.setAttribute('d', points2path(0, points.length));
//console.log(drawnPath);
p.setAttribute('d', drawnPath);
// Is it on a new target? If so, vibrate.
for (var t in targets) {
if (Math.pow(targets[t].x - point.x, 2) + Math.pow(targets[t].y - point.y, 2) <= cutoff) {
if (t != lastTouchedTarget) {
lastTouchedTarget = t;
if (vibrateOn && vibrate) {
navigator.vibrate([30]);
}
// Show a circle
var circle = document.getElementById('glyphCircle' + t);
circle.style.display = '';
}
break;
}
}
}
if (isTouchEvent(e))
e.preventDefault();
}
function up(e) {
if (!isDown) return;
isDown = false;
if (isTouchEvent(e))
e.preventDefault();
console.log("points.length = " + points.length);
var lastt = -1;
starti = 0;
for (var i = 0; i < points.length; i++) {
// Find closest target for each point
//console.log('i = ' + i);
var best = cutoff + 1, bestindex = -1;
for (var t in targets) {
var dx = targets[t].x - points[i].x;
var dy = targets[t].y - points[i].y;
var dist2 = dx * dx + dy * dy;
if (dist2 < best && dist2 <= cutoff) {
best = dist2;
bestindex = t;
}
}
if (bestindex != -1) {
// calculate vector to animate point along
points[i].vx = targets[bestindex].x - points[i].x;
points[i].vy = targets[bestindex].y - points[i].y;
points[i].tx = targets[bestindex].x;
points[i].ty = targets[bestindex].y;
points[i].last = bestindex;
points[i].closeby = bestindex;
if (lastt != -1 && lastt != bestindex) {
// Stroke between targets detected
strokes['f' + Math.min(lastt, bestindex) + 't' + Math.max(lastt, bestindex)] = 1;
}
lastt = bestindex;
} else if (lastt != -1) {
points[i].last = lastt;
} else {
starti = i + 1;
}
}
// Now do it backwards to find next valid point
stopi = points.length;
lastt = -1;
for (i = points.length - 1; i >= starti; i--) {
//console.log('backtrack ' + i + ' of ' + points.length);
if (points[i].closeby !== undefined) {
lastt = points[i].closeby;
points[i].next = lastt;
} else if (lastt != -1) {
points[i].next = lastt;
} else {
stopi = i;
}
}
// Finally go through all (valid) points a last time to see where to interpolate them
for (i = starti; i < stopi; i++) {
//console.log('p' + i + ':{close:' + points[i].closeby + ', next:' + points[i].next + ', last:' + points[i].last)
if (points[i].closeby == undefined) {
var target;
if (points[i].last == points[i].next) {
// This is on a loop back to the same point
target = targets[points[i].last];
} else {
target = _pointOnLine(targets[points[i].last], targets[points[i].next], points[i]);
if (target === null) {
//console.log(pp(targets[points[i].last]) + ', ' + pp(targets[points[i].next]) + ', ' + pp(points[i]));
continue;
}
}
//console.log('target found: ' + pp(target));
points[i].vx = target.x - points[i].x;
points[i].vy = target.y - points[i].y;
points[i].tx = target.x;
points[i].ty = target.y;
}
}
// Store start position for each point
for (i = starti; i < stopi; i++) {
points[i].ox = points[i].x;
points[i].oy = points[i].y;
}
// Glyph detection
var id = strokes2id(strokes);
glyph = glyphlookup[id] ? glyphlookup[id] : null;
lesson.newCorrect = false;
if (glyph != null) {
console.log('found ' + glyph.name[0]);
if (currentLesson != -1 && lesson.glyphsleft.length > 0 && glyph.name[0] == lesson.glyphsleft[lesson.currentIndex].name[0]) {
console.log('drew correctly!');
txt.textContent = glyph.name[lesson.nameindex].toUpperCase();
var timeTaken = Date.now() - startedGlyph;
console.log('it took ' + timeTaken + ' time');
// DEBUG: Show time taken in UI
document.getElementById('spacer').textContent = timeTaken + ' ms';
if (!lesson.peeked) {
// Update progress bar
setProgressBar((lesson.glyphCount - lesson.glyphsleft.length + 1) * 100.0 / lesson.glyphCount);
} else {
lesson.flawless = false;
}
if (!lesson.drewCorrect) {
// They have not drawn the same again (after completing it)
lesson.newCorrect = true;
if (!settings.dontSaveResults) {
setScore(glyph.id, { peeked: lesson.peeked, tries: lesson.drewIncorrectCount, time: timeTaken, date: Date.now(), gaveup: false });
}
}
lesson.drewCorrect = true;
} else {
var nameIndex = glyphsShown++ % glyph.name.length;
txt.textContent = glyph.name[nameIndex].toUpperCase();
lesson.drewIncorrectCount++;
lesson.flawless = false;
}
} else {
txt.textContent = 'UNKNOWN';
lesson.drewIncorrectCount++;
lesson.flawless = false;
}
startLoop();
}
function pp(p) {
return '{x:' + p.x + ', y:' + p.y + '}';
}
function calculateScore(performance) {
// Score goes to 100. IF the user never seen the glyph consider the score 0.
var score = 100;
// remove time taken, up to 10 seconds, -2 points per second
score -= Math.min(Math.floor(performance.time / 500), 20);
// if peeked or gave up, loose 60 points
if (performance.peeked || performance.gaveup)
score -= 60;
// Failed attempts cost 10 points each, up to 4 attempts
score -= Math.min(performance.tries * 10, 40);
// if this is an old result, reduce score since it might been forgotten since then
// NOTE: for this to work the scores must be recalculated, e.g. on load from storage
var daysAgo = Math.floor((Date.now() - performance.date) / (24 * 60 * 60 * 1000));
score -= Math.min(daysAgo, 30);
// Don't do negative scores
return Math.min(0, score);
}
function setScore(glyphId, performance) {
// Calculates and saves a score based on the user perfomance. This should be tweaked.
// Calculate score
performance.score = calculateScore(performance);
// Update last 5 results for this glyph
var glyphResults = getResultObject('glyph', glyphId);
if (!glyphResults.last5) glyphResults.last5 = [];
glyphResults.last5.push(performance);
if (glyphResults.last5.length > 5) glyphResults.last5.shift();
// Update glyph average score
var totalScore = 0;
for (var i = 0; i < glyphResults.last5.length; i++) totalScore += glyphResults.last5[i].score;
glyphlookup[glyphId].avgScore = totalScore / glyphResults.last5.length;
// Save
window.localStorage.setObject('results', results);
}
function showNextGlyph() {
if (currentLesson == -1) {