asciiblaster

- draw irc art in your web browser
git clone git://git.acid.vegas/asciiblaster.git
util.js (6589B)
      1 if (window.$) {
      2   $.fn.int = function(){ return parseInt($(this).val(),10) }
      3   $.fn.float = function(){ return parseFloat($(this).val()) }
      4   $.fn.string = function(){ return trim($(this).val()) }
      5   $.fn.enable = function() { return $(this).attr("disabled",null) }
      6   $.fn.disable = function() { return $(this).attr("disabled","disabled") }
      7 }
      8 
      9 function noop(){}
     10 function trim(s){ return s.replace(/^\s+/,"").replace(/\s+$/,"") }
     11 
     12 var E = Math.E
     13 var PI = Math.PI
     14 var PHI = (1+Math.sqrt(5))/2
     15 var TWO_PI = PI*2
     16 var LN10 = Math.LN10
     17 function clamp(n,a,b){ return n<a?a:n<b?n:b }
     18 function norm(n,a,b){ return (n-a) / (b-a) }
     19 function lerp(n,a,b){ return (b-a)*n+a }
     20 function mix(n,a,b){ return a*(1-n)+b*n }
     21 function ceil(n){ return Math.ceil(n) }
     22 function floor(n){ return Math.floor(n) }
     23 function round(n){ return Math.round(n) }
     24 function max(a,b){ return Math.max(a,b) }
     25 function min(a,b){ return Math.min(a,b) }
     26 function abs(n){ return Math.abs(n) }
     27 function sign(n){ return Math.abs(n)/n }
     28 function pow(n,b) { return Math.pow(n,b) }
     29 function exp(n) { return Math.exp(n) }
     30 function log(n){ return Math.log(n) }
     31 function ln(n){ return Math.log(n)/LN10 }
     32 function sqrt(n) { return Math.sqrt(n) }
     33 function cos(n){ return Math.cos(n) }
     34 function sin(n){ return Math.sin(n) }
     35 function tan(n){ return Math.tan(n) }
     36 function acos(n){ return Math.cos(n) }
     37 function asin(n){ return Math.sin(n) }
     38 function atan(n){ return Math.atan(n) }
     39 function atan2(a,b){ return Math.atan2(a,b) }
     40 function sec(n){ return 1/cos(n) }
     41 function csc(n){ return 1/sin(n) }
     42 function cot(n){ return 1/tan(n) }
     43 function cosp(n){ return (1+Math.cos(n))/2 } // cos^2
     44 function sinp(n){ return (1+Math.sin(n))/2 }
     45 function random(){ return Math.random() }
     46 function rand(n){ return (Math.random()*n) }
     47 function randint(n){ return rand(n)|0 }
     48 function randrange(a,b){ return a + rand(b-a) }
     49 function randsign(){ return random() >= 0.5 ? -1 : 1 }
     50 function randnullsign(){ var r = random(); return r < 0.333 ? -1 : r < 0.666 ? 0 : 1 }
     51 
     52 function xrandom(exp){ return Math.pow(Math.random(), exp) }
     53 function xrand(exp,n){ return (xrandom(exp)*n) }
     54 function xrandint(exp,n){ return rand(exp,n)|0 }
     55 function xrandrange(exp,a,b){ return a + xrand(exp,b-a) }
     56 
     57 function choice(a){ return a[randint(a.length)] }
     58 function deg(n){ return n*180/PI }
     59 function rad(n){ return n*PI/180 }
     60 function xor(a,b){ a=!!a; b=!!b; return (a||b) && !(a&&b) }
     61 function mod(n,m){ n = n % m; return n < 0 ? (m + n) : n }
     62 function modi(n,m){ return floor(mod(n,m)) }
     63 function dist(x0,y0,x1,y1){ return sqrt(pow(x1-x0,2)+pow(y1-y0,2)) }
     64 function angle(x0,y0,x1,y1){ return atan2(y1-y0,x1-x0) }
     65 function avg(m,n,a){ return (m*(a-1)+n)/a }
     66 function quantize(a,b){ return floor(a/b)*b }
     67 function quantile(a,b){ return floor(a/b) }
     68 
     69 function pixel(x,y){ return 4*(mod(y,actual_h)*actual_w+mod(x,actual_w)) }
     70 function rgbpixel(d,x,y){
     71   var p = pixel(~~x,~~y)
     72   r = d[p]
     73   g = d[p+1]
     74   b = d[p+2]
     75   a = d[p+3]
     76 }
     77 function fit(d,x,y){ rgbpixel(d,x*actual_w/w,y*actual_h/h) }
     78 
     79 function step(a, b){
     80   return (b >= a) + 0 
     81                // ^^ bool -> int
     82 }
     83 
     84 function julestep (a,b,n) {
     85   return clamp(norm(n,a,b), 0.0, 1.0);
     86 }
     87 
     88 // hermite curve apparently
     89 function smoothstep(min,max,n){
     90   var t = clamp((n - min) / (max - min), 0.0, 1.0);
     91   return t * t * (3.0 - 2.0 * t)
     92 }
     93 
     94 function toArray(a){ return Array.prototype.slice.call(a) }
     95 function shuffle(a){
     96   for (var i = a.length; i > 0; i--){
     97     var r = randint(i)
     98     var swap = a[i-1]
     99     a[i-1] = a[r]
    100     a[r] = swap
    101   }
    102   return a
    103 }
    104 function reverse(a){
    105   var reversed = []
    106   for (var i = 0, _len = a.length-1; i <= _len; i++){
    107     reversed[i] = a[_len-i]
    108   }
    109   return reversed
    110 }
    111 function deinterlace(a){
    112   var odd = [], even = []
    113   for (var i = 0, _len = a.length; i < _len; i++) {
    114     if (i % 2) even.push(a[i])
    115     else odd.push(a[i])
    116   }
    117   return [even, odd]
    118 }
    119 function weave(a){
    120   var aa = deinterlace(a)
    121   var b = []
    122   aa[0].forEach(function(el){ b.push(el) })
    123   reverse(aa[1]).forEach(function(el){ b.push(el) })
    124   return b
    125 }
    126 function cssRule (selector, declaration) {
    127   var x = document.styleSheets, y = x.length-1;
    128   x[y].insertRule(selector+"{"+declaration+"}", x[y].cssRules.length);
    129 }
    130 
    131 // easing functions
    132 function circular (t) { return Math.sqrt( 1 - ( --t * t ) ) }
    133 function quadratic (t) { return t * ( 2 - t ) }
    134 function back (t) {
    135   var b = 4;
    136   return ( t = t - 1 ) * t * ( ( b + 1 ) * t + b ) + 1;
    137 }
    138 function bounce (t) {
    139   if (t >= 1) return 1;
    140   if ( ( t /= 1 ) < ( 1 / 2.75 ) ) {
    141     return 7.5625 * t * t;
    142   } else if ( t < ( 2 / 2.75 ) ) {
    143     return 7.5625 * ( t -= ( 1.5 / 2.75 ) ) * t + 0.75;
    144   } else if ( t < ( 2.5 / 2.75 ) ) {
    145     return 7.5625 * ( t -= ( 2.25 / 2.75 ) ) * t + 0.9375;
    146   } else {
    147     return 7.5625 * ( t -= ( 2.625 / 2.75 ) ) * t + 0.984375;
    148   }
    149 }
    150 function elastic (t) {
    151   var f = 0.22,
    152       e = 0.4;
    153 
    154   if ( t === 0 ) { return 0; }
    155   if ( t == 1 ) { return 1; }
    156 
    157   return ( e * Math.pow( 2, - 10 * t ) * Math.sin( ( t - f / 4 ) * ( 2 * Math.PI ) / f ) + 1 );
    158 }
    159 
    160 Model=function a(b,c,d,e){function f(){var a=this,f={};a.on=function(a,b){(f[a]||
    161 (f[a]=[])).push(b)},a.trigger=function(a,b){for(var c=f[a],d=0;c&&d<c.length;)c
    162 [d++](b)},a.off=function(a,b){for(d=f[a]||[];b&&(c=d.indexOf(b))>-1;)d.splice(c
    163 ,1);f[a]=b?d:[]};for(c in b)d=b[c],a[c]=typeof d=="function"?function(){return(
    164 d=this.apply(a,arguments))===e?a:d}.bind(d):d;a.init&&a.init.apply(a,arguments)
    165 }return f.extend=function(f){d={};for(c in b)d[c]=b[c];for(c in f)d[c]=f[c],b[c
    166 ]!==e&&(d["__"+c]=b[c]);return a(d)},f},typeof module=="object"&&(module.exports
    167 =Model);                                                              // c-{{{-<
    168 
    169 function defaults (dest, src) {
    170 	dest = dest || {}
    171 	for (var i in src) {
    172 		dest[i] = typeof dest[i] == 'undefined' ? src[i] : dest[i]
    173 	}
    174 	return dest
    175 }
    176 
    177 function setSelectionRange(input, selectionStart, selectionEnd) {
    178   if (input.setSelectionRange) {
    179     input.focus();
    180     input.setSelectionRange(selectionStart, selectionEnd);
    181   }
    182   else if (input.createTextRange) {
    183     var range = input.createTextRange();
    184     range.collapse(true);
    185     range.moveEnd('character', selectionEnd);
    186     range.moveStart('character', selectionStart);
    187     range.select();
    188   }
    189 }
    190 function setCaretToPos(input, pos) {
    191   setSelectionRange(input, pos, pos);
    192 }
    193 
    194 // Naive useragent detection pattern
    195 var is_iphone = (navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))
    196 var is_ipad = (navigator.userAgent.match(/iPad/i))
    197 var is_android = (navigator.userAgent.match(/Android/i))
    198 var is_mobile = is_iphone || is_ipad || is_android
    199 var is_desktop = ! is_mobile;