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prosperon/scripts/base.js

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/* It is EMCA6 but without a lot of builtin objects and various functions. There are no:
* Promises and so on (Generators, async)
* WeakMaps and so on (weakset, weakref)
* Typed arrays
* Proxys
* Modules
* Symbols (use closures)
In addition to the removal of a bunch of stuff as seen here.
Access prototypes through __proto__ instead of the long-winded Object.getProtoTypeOf.
*/
/*
Object.getPrototypeOf = undefined;
Object.setPrototypeOf = undefined;
Reflect = undefined
Symbol = undefined;
URIError = undefined;
Proxy = undefined;
Map = undefined;
WeakMap = undefined;
Promise = undefined;
Set = undefined;
WeakSet = undefined;
*/
Number.roman = {
M: 1000,
D: 500,
C: 100,
L: 50,
X: 10,
V: 5,
I: 1
};
var convert = {};
convert.romanize = function(num) {
if (!+num) return false;
var digits = String(+num).split('');
var key = ['','C','CC','CCC','CD','D','DC','DCC','DCCC','CM',
'','X','XX','XXX','XL','L','LX','LXX','LXXX','XC',
'','I','II','III','IV','V','VI','VII','VIII','IX'];
var roman = '', i = 3;
while (i--) roman = (key[+digits.pop() + (i * 10)] || '') + roman;
return Array(+digits.join('') + 1).join('M') + roman;
}
convert.deromanize = function(str) {
var str = str.toUpperCase();
var validator = /^M*(?:D?C{0,3}|C[MD])(?:L?X{0,3}|X[CL])(?:V?I{0,3}|I[XV])$/;
var token = /[MDLV]|C[MD]?|X[CL]?|I[XV]?/g;
var key = {M:1000,CM:900,D:500,CD:400,C:100,XC:90,L:50,XL:40,X:10,IX:9,V:5,IV:4,I:1};
var num = 0, m;
if (!(str && validator.test(str))) return false;
while (m = token.exec(str)) num += key[m[0]];
return num;
}
convert.buf2hex = function(buffer) { // buffer is an ArrayBuffer
return [...new Uint8Array(buffer)]
.map(x => x.toString(16).padStart(2, '0'))
.join(' ');
}
/* Time values are always expressed in terms of real earth-seconds */
Object.assign(time, {
hour2minute() { return this.hour/this.minute; },
day2hour() { return this.day/this.hour; },
minute2second() { return this.minute/this.second; },
week2day() { return this.week/this.day; },
});
time.strparse = {
yyyy: "year",
mm: "month",
m: "month",
eee: "yday",
dd: "day",
d: "day",
v: "weekday",
hh: "hour",
h: "hour",
nn: "minute",
n: "minute",
ss: "second",
s: "second",
};
time.doc = {
doc: "Functions for manipulating time.",
second: "Earth-seconds in a second.",
minute: "Seconds in a minute.",
hour: "Seconds in an hour.",
day: "Seconds in a day.",
week: "Seconds in a week.",
weekdays: "Names of the days of the week.",
monthstr: "Full names of the months of the year.",
epoch: "Times are expressed in terms of day 0 at hms 0 of this year.",
now: "Get the time now.",
computer_zone: "Get the time zone of the running computer.",
computer_dst: "Return true if the computer is in daylight savings.",
yearsize: "Given a year, return the number of days in that year.",
monthdays: "Number of days in each month.",
fmt: "Default format for time.",
record: "Given a time, return an object with time fields.",
number: "Return the number representation of a given time.",
text: "Return a text formatted time."
};
time.second = 1;
time.minute = 60;
time.hour = 3_600;
time.day = 86_400;
time.week = 604_800;
time.weekdays = ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"];
time.monthstr = ["January", "February", "March", 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'];
time.epoch = 1970;
time.isleap = function(year) { return this.yearsize(year) === 366; }
time.isleap.doc = "Return true if the given year is a leapyear.";
time.yearsize = function(y) {
if (y%4 === 0 && (y%100 != 0 || y%400 === 0))
return 366;
return 365;
}
time.timecode = function(t, fps = 24)
{
var s = Math.trunc(t);
t -= s;
return `${s}:${Math.trunc(fps*s)}`;
}
time.monthdays = [31,28,31,30,31,30,31,31,30,31,30,31];
time.zones = {};
time.zones['-12'] = 'IDLW';
time.record = function(num, zone = this.computer_zone())
{
if (typeof num === 'object') return num;
else if (typeof num === 'number') {
var monthdays = this.monthdays.slice();
var rec = {
second: 0,
minute: 0,
hour: 0,
yday: 0,
year: 0,
zone: 0
};
rec.zone = zone;
num += zone*this.hour;
var hms = num % this.day;
var day = parseInt(num/this.day);
if (hms < 0) {
hms += this.day;
day--;
}
rec.second = hms%this.minute;
var d1 = Math.floor(hms/this.minute);
rec.minute = d1 % this.minute;
rec.hour = Math.floor(d1/this.minute);
/* addend%7 is 4 */
rec.weekday = (day + 4503599627370496+2)%7;
var d1 = this.epoch;
if (day >= 0)
for (d1= this.epoch; day >= this.yearsize(d1); d1++)
day -= this.yearsize(d1);
else
for (d1 = this.epoch; day < 0; d1--)
day += this.yearsize(d1-1);
rec.year = d1;
if (rec.year <= 0)
rec.ce = 'BC';
else
rec.ce = 'AD';
rec.yday = day;
if (this.yearsize(d1) === 366)
monthdays[1] = 29;
var d0 = day;
for (d1 = 0; d0 >= monthdays[d1]; d1++)
d0 -= monthdays[d1];
monthdays[1] = 28;
rec.day = d0 + 1;
rec.month = d1;
return rec;
}
}
time.number = function(rec)
{
if (typeof rec === 'number')
return rec;
else if (typeof rec === 'object') {
var c = 0;
var year = rec.year ? rec.year : 0;
var hour = rec.hour ? rec.hour : 0;
var minute = rec.minute ? rec.minute : 0;
var second = rec.second ? rec.second : 0;
var zone = rec.zone ? rec.zone : 0;
if (year > this.epoch)
for (var i = this.epoch; i < year; i++)
c += this.day*this.yearsize(i);
else if (year < this.epoch) {
for (var i = this.epoch-1; i > year; i--)
c += this.day*this.yearsize(i);
c += (this.yearsize(year)-yday-1)*this.day;
c += (this.day2hour()-hour-1)*this.hour;
c += (this.hour2minute()-minute-1)*this.minute;
c += (this.minute2second()-second);
c += zone*this.hour;
c *= -1;
return c;
}
c += second;
c += minute * this.minute;
c += hour * this.hour;
c += yday * this.day;
c -= zone * this.hour;
return c;
}
}
/* Time formatting
yyyy - year in a 4 digit field
y - as many digits as necessary
mm - month (1-12)
mB - month name
mb - abbreviated month name
dd - day (1-31)
d
c - if the year is <= 0, BC. Otherwise, AD.
hh - hour
h
nn - minutes
n
ss - seconds
s
v - day of the week (0-6)
vB - weekday name
vb - abbreviated weekday name
a - am/pm
z - zone, -12 to +11
*/
time.fmt = "vB mB d h:nn:ss TZz a y c";
/* If num is a number, converts to a rec first. */
time.text = function(num, fmt = this.fmt, zone)
{
var rec = num;
if (typeof rec === 'number')
rec = time.record(num, zone);
zone = rec.zone;
if (fmt.match('a')) {
if (rec.hour >= 13) {
rec.hour -= 12;
fmt = fmt.replaceAll('a', 'PM');
} else if (rec.hour === 12)
fmt = fmt.replaceAll('a', 'PM');
else if (rec.hour === 0) {
rec.hour = 12;
fmt = fmt.replaceAll('a', 'AM');
} else
fmt = fmt.replaceAll('a', 'AM');
}
var year = rec.year > 0 ? rec.year : rec.year - 1;
if (fmt.match('c')) {
if (year < 0) {
year = Math.abs(year);
fmt = fmt.replaceAll('c', 'BC');
} else
fmt = fmt.replaceAll('c', 'AD');
}
fmt = fmt.replaceAll('yyyy', year.toString().padStart(4,'0'));
fmt = fmt.replaceAll('y', year);
fmt = fmt.replaceAll('eee', rec.yday+1);
fmt = fmt.replaceAll('dd', rec.day.toString().padStart(2,'0'));
fmt = fmt.replaceAll('d', rec.day);
fmt = fmt.replaceAll('hh', rec.hour.toString().padStart(2,'0'));
fmt = fmt.replaceAll('h', rec.hour);
fmt = fmt.replaceAll('nn', rec.minute.toString().padStart(2,'0'));
fmt = fmt.replaceAll('n', rec.minute);
fmt = fmt.replaceAll('ss', rec.second.toString().padStart(2, '0'));
fmt = fmt.replaceAll('s', rec.second);
fmt = fmt.replaceAll('z', zone >= 0 ? "+" + zone : zone);
fmt = fmt.replaceAll(/mm[^bB]/g, rec.month+1);
fmt = fmt.replaceAll(/m[^bB]/g, rec.month+1);
fmt = fmt.replaceAll(/v[^bB]/g, rec.weekday);
fmt = fmt.replaceAll('mb', this.monthstr[rec.month].slice(0,3));
fmt = fmt.replaceAll('mB', this.monthstr[rec.month]);
fmt = fmt.replaceAll('vB', this.weekdays[rec.weekday]);
fmt = fmt.replaceAll('vb', this.weekdays[rec.weekday].slice(0,3));
return fmt;
}
Object.methods = function(o)
{
var m = [];
Object.keys(o).forEach(function(k) {
if (typeof o[k] === 'function') m.push(k);
});
return m;
}
Object.methods.doc = "Retun an array of all functions an object has access to.";
Object.dig = function(obj, path, def = {})
{
var pp = path.split('.');
for (var i = 0; i < pp.length-1; i++) {
obj = obj[pp[i]] = obj[pp[i]] || {};
}
obj[pp[pp.length-1]] = def;
return def;
}
Object.rkeys = function(o)
{
var keys = [];
Object.keys(o).forEach(function(key) {
keys.push(key);
if (Object.isObject(o[key]))
keys.push(Object.rkeys(o[key]));
});
return keys;
}
Object.readonly = function(o, name, msg)
{
var tmp = {};
var prop = Object.getOwnPropertyDescriptor(o, name);
if (!prop) {
console.error(`Attempted to make property ${name} readonly, but it doesn't exist on ${o}.`);
return;
}
Object.defineProperty(tmp, name, prop);
prop.get = function() { return tmp[name]; }
prop.set = function() { console.warn(`Attempted to set readonly property ${name}`); }
Object.defineProperty(o, name, prop);
}
Object.mixin = function(target, source)
{
if (typeof source !== 'object') return target;
Object.defineProperties(target, Object.getOwnPropertyDescriptors(source));
return target;
};
Object.mix = function(...objs)
{
var n = {};
for (var o of objs)
Object.mixin(n,o);
return n;
}
Object.deepmixin = function(target, source)
{
var o = source;
while (o !== Object.prototype) {
Object.mixin(target, o);
o = o.__proto__;
};
}
Object.deepfreeze = function(obj)
{
for (var key in obj) {
if (typeof obj[key] === 'object')
Object.deepfreeze(obj[key]);
}
Object.freeze(obj);
}
/* Goes through each key and overwrites if it's present */
Object.dainty_assign = function(target, source)
{
Object.keys(source).forEach(function(k) {
if (typeof source[k] === 'function') return;
if (!(k in target)) return;
if (Array.isArray(source[k]))
target[k] = deep_copy(source[k]);
else if (Object.isObject(source[k]))
Object.dainty_assign(target[k], source[k]);
else
target[k] = source[k];
});
}
Object.isObject = function(o)
{
return (o instanceof Object && !(o instanceof Array));
}
Object.setter_assign = function(target, source)
{
for (var key in target)
if (Object.isAccessor(target,key) && typeof source[key] !== 'undefined')
target[key] = source[key];
}
Object.containingKey = function(obj, prop)
{
if (typeof obj !== 'object') return undefined;
if (!(prop in obj)) return undefined;
var o = obj;
while (o.__proto__ && !Object.hasOwn(o, prop))
o = o.__proto__;
return o;
}
Object.access = function(obj, name)
{
var dig = name.split('.');
for (var i of dig) {
obj = obj[i];
if (!obj) return undefined;
}
return obj;
}
Object.isAccessor = function(obj, prop)
{
var o = Object.containingKey(obj,prop);
if (!o) return false;
var desc = Object.getOwnPropertyDescriptor(o,prop);
if (!desc) return false;
if (desc.get || desc.set) return true;
return false;
}
Object.mergekey = function(o1,o2,k)
{
if (!o2) return;
if (typeof o2[k] === 'object') {
if (Array.isArray(o2[k]))
o1[k] = deep_copy(o2[k]);
else {
if (!o1[k]) o1[k] = {};
if (typeof o1[k] === 'object')
Object.merge(o1[k], o2[k]);
else
o1[k] = o2[k];
}
} else
o1[k] = o2[k];
}
/* Same as merge from Ruby */
/* Adds objs key by key to target */
Object.merge = function(target, ...objs)
{
for (var obj of objs)
for (var key of Object.keys(obj))
Object.mergekey(target,obj,key);
return target;
}
Object.totalmerge = function(target, ...objs)
{
for (var obj of objs)
for (var key in obj)
Object.mergekey(target,obj,key);
return target;
}
/* Returns a new object with undefined, null, and empty values removed. */
Object.compact = function(obj)
{
}
Object.totalassign = function(to, from)
{
for (var key in from)
to[key] = from[key];
}
/* Prototypes out an object and assigns values */
Object.copy = function(proto, ...objs)
{
var c = Object.create(proto);
for (var obj of objs)
Object.mixin(c, obj);
return c;
}
/* OBJECT DEFININTIONS */
Object.defHidden = function(obj, prop)
{
Object.defineProperty(obj, prop, {enumerable:false, writable:true});
}
Object.hide = function(obj,...props)
{
for (var prop of props) {
var p = Object.getOwnPropertyDescriptor(obj,prop);
if (!p) {
console.error(`No property of name ${prop}.`);
continue;
}
p.enumerable = false;
Object.defineProperty(obj, prop, p);
}
}
Object.unhide = function(obj, ...props)
{
for (var prop of props) {
var p = Object.getOwnPropertyDescriptor(obj,prop);
if (!p)
continue;
p.enumerable = true;
Object.defineProperty(obj, prop, p);
}
}
Object.defineProperty(Object.prototype, 'obscure', {
value: function(name) {
Object.defineProperty(this, name, { enumerable: false });
}
});
Object.defineProperty(Object.prototype, 'mixin', {
value: function(obj) {
if (typeof obj === 'string')
obj = use(obj, this);
if (obj)
Object.mixin(this, obj);
},
});
Object.defineProperty(Object.prototype, 'hasOwn', {
value: function(x) { return this.hasOwnProperty(x); }
});
Object.defineProperty(Object.prototype, 'defn', {
value: function(name, val) {
Object.defineProperty(this, name, { value:val, writable:true, configurable:true });
}
});
Object.defineProperty(Object.prototype, 'nulldef', {
value: function(name, val) {
if (!this.hasOwnProperty(name)) this[name] = val;
}
});
Object.defineProperty(Object.prototype, 'prop_obj', {
value: function() { return JSON.parse(JSON.stringify(this)); }
});
/* defc 'define constant'. Defines a value that is not writable. */
Object.defineProperty(Object.prototype, 'defc', {
value: function(name, val) {
Object.defineProperty(this,name, {
value: val,
writable:false,
enumerable:true,
configurable:false,
});
}
});
Object.defineProperty(Object.prototype, 'stick', {
value: function(prop) {
Object.defineProperty(this, prop, {writable:false});
}
});
Object.defineProperty(Object.prototype, 'harden', {
value: function(prop) {
Object.defineProperty(this, prop, {writable:false, configurable:false, enumerable: false});
}
});
Object.defineProperty(Object.prototype, 'deflock', {
value: function(prop) {
Object.defineProperty(this,prop, {configurable:false});
}
});
Object.defineProperty(Object.prototype, 'forEach', {
value: function(fn) {
Object.values(this).forEach(fn);
}
});
Object.defineProperty(Object.prototype, 'map', {
value: function(fn) {
var a = [];
Object.values(this).forEach(function(x) {
a.push(fn(x));
});
return a;
}
});
Object.empty = function(obj) {
return Object.keys(obj).length === 0;
}
Object.defineProperty(Object.prototype, 'nth', {
value: function(x) {
if (this.empty || x >= Object.keys(this).length) return null;
return this[Object.keys(this)[x]];
},
});
Object.defineProperty(Object.prototype, 'filter', {
value: function(fn) {
return Object.values(this).filter(fn);
}
});
Object.defineProperty(Object.prototype, 'push', {
value: function(val) {
var str = val.toString();
str = str.replaceAll('.', '_');
var n = 1;
var t = str;
while (Object.hasOwn(this,t)) {
t = str + n;
n++;
}
this[t] = val;
return t;
}
});
/* STRING DEFS */
Object.defineProperty(String.prototype, 'next', {
value: function(char, from) {
if (!Array.isArray(char))
char = [char];
if (from > this.length-1)
return -1;
else if (!from)
from = 0;
var find = this.slice(from).search(char[0]);
if (find === -1)
return -1;
else
return from + find;
var i = 0;
var c = this.charAt(from+i);
while (!char.includes(c)) {
i++;
if (from+i >this.length-1) return -1;
c = this.charAt(from+i);
}
return from+i;
}
});
Object.defineProperty(String.prototype, 'prev', {
value: function(char, from, count) {
if (from > this.length-1)
return -1;
else if (!from)
from = this.length-1;
if (!count) count = 0;
var find = this.slice(0,from).lastIndexOf(char);
while (count > 1) {
find = this.slice(0,find).lastIndexOf(char);
count--;
}
if (find === -1)
return 0;
else
return find;
}
});
Object.defineProperty(String.prototype, 'shift', {
value: function(n) {
if (n === 0) return this.slice();
if (n > 0)
return this.slice(n);
if (n < 0)
return this.slice(0, this.length+n);
}
});
Object.defineProperty(String.prototype, 'strip_ext', {
value: function() { return this.tolast('.'); }
});
Object.defineProperty(String.prototype, 'ext', {
value: function() { return this.fromlast('.'); }
});
Object.defineProperty(String.prototype, 'set_ext', {
value: function(val) { return this.strip_ext() + val; }
});
Object.defineProperty(String.prototype, 'folder_same_name', {
value: function() {
var dirs = this.dir().split('/');
return dirs.last() === this.name();
}
});
Object.defineProperty(String.prototype, 'up_path', {
value: function() {
var base = this.base();
var dirs = this.dir().split('/');
dirs.pop();
return dirs.join('/') + base;
}
});
Object.defineProperty(String.prototype, 'fromlast', {
value: function(val) {
var idx = this.lastIndexOf(val);
if (idx === -1) return "";
return this.slice(idx+1);
}
});
Object.defineProperty(String.prototype, 'tofirst', {
value: function(val) {
var idx = this.indexOf(val);
if (idx === -1) return this.slice();
return this.slice(0,idx);
}
});
Object.defineProperty(String.prototype, 'fromfirst', {
value: function(val) {
var idx = this.indexOf(val);
if (idx === -1) return this;
return this.slice(idx+val.length);
}
});
Object.defineProperty(String.prototype, 'name', {
value: function() {
var idx = this.indexOf('/');
if (idx === -1)
return this.tolast('.');
return this.fromlast('/').tolast('.'); }
});
Object.defineProperty(String.prototype, 'set_name', {
value: function(name) {
var dir = this.dir();
return this.dir() + name + "." + this.ext();
}
});
Object.defineProperty(String.prototype, 'base', {
value: function() { return this.fromlast('/'); }
});
Object.defineProperty(String.prototype, 'splice', {
value: function(index, str) {
return this.slice(0,index) + str + this.slice(index);
}
});
Object.defineProperty(String.prototype, 'sub', {
value: function(index, str) {
return this.slice(0,index) + str + this.slice(index+str.length);
}
});
Object.defineProperty(String.prototype, 'updir', {
value: function() {
if (this.lastIndexOf('/') === this.length-1)
return this.slice(0,this.length-1);
var dir = (this + "/").dir();
return dir.dir();
}
});
Object.defineProperty(String.prototype, 'trimchr', {
value: function(chars) {
return vector.trimchr(this, chars);
}
});
Object.defineProperty(String.prototype, 'uc', { value: function() { return this.toUpperCase(); } });
Object.defineProperty(String.prototype, 'lc', {value:function() { return this.toLowerCase(); }});
/* ARRAY DEFS */
Object.defineProperty(Array.prototype, 'copy', {
value: function() {
var c = [];
this.forEach(function(x, i) {
c[i] = deep_copy(x);
});
return c;
}
});
Object.defineProperty(Array.prototype, 'forFrom', {
value: function(n, fn) {
for (var i = n; i < this.length; i++) fn(this[i]);
}
});
Object.defineProperty(Array.prototype, 'forTo', {
value: function(n, fn) {
for (var i = 0; i < n; i++) fn(this[i]);
}
});
Object.defineProperty(Array.prototype, 'dofilter', {
value: function(fn) {
for (let i = 0; i < this.length; i++) {
if (!fn.call(this, this[i], i, this)) {
this.splice(i, 1);
i--;
}
}
return this;
}
});
Object.defineProperty(Array.prototype, 'reversed', {
value: function() {
var c = this.slice();
return c.reverse();
}
});
Object.defineProperty(Array.prototype, 'rotate', {
value: function(a) {
return Vector.rotate(this, a);
}
});
function make_swizz() {
function setelem(n) {
return {
get: function() { return this[n]; },
set: function(x) { this[n] = x; }
}
};
function arrsetelem(str, n)
{
Object.defineProperty(Array.prototype, str, setelem(n));
}
var arr_elems = ['x', 'y', 'z', 'w'];
var quat_elems = ['i', 'j', 'k'];
var color_elems = ['r', 'g', 'b', 'a'];
arr_elems.forEach(function(x, i) { arrsetelem(x,i); });
quat_elems.forEach(function(x, i) { arrsetelem(x,i); });
color_elems.forEach(function(x, i) { arrsetelem(x,i); });
var nums = [0,1,2,3];
var swizz = [];
for (var i of nums)
for (var j of nums)
swizz.push([i,j]);
swizz.forEach(function(x) {
var str = "";
for (var i of x)
str += arr_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]]]; },
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; },
});
str = "";
for (var i of x) str += color_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]]]; },
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; },
});
});
swizz = [];
for (var i of nums)
for (var j of nums)
for (var k of nums)
swizz.push([i,j,k]);
swizz.forEach(function(x) {
var str = "";
for (var i of x)
str += arr_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]], this[x[2]]]; },
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; this[x[2]] = j[2];},
});
str = "";
for (var i of x) str += color_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]], this[x[2]]]; },
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; this[x[2]] = j[2];},
});
});
swizz = [];
for (var i of nums)
for (var j of nums)
for (var k of nums)
for (var w of nums)
swizz.push([i,j,k,w]);
swizz.forEach(function(x) {
var str = "";
for (var i of x)
str += arr_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]], this[x[2]], this[x[3]]];},
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; this[x[2]] = j[2]; this[x[3]] = j[3];},
});
str = "";
for (var i of x) str += color_elems[i];
Object.defineProperty(Array.prototype, str, {
get() { return [this[x[0]], this[x[1]], this[x[2]], this[x[3]]];},
set(j) { this[x[0]] = j[0]; this[x[1]] = j[1]; this[x[2]] = j[2]; this[x[3]] = j[3];},
});
});
};
make_swizz();
Object.defineProperty(Array.prototype, 'normalized', {
value: function() {
var c = this.slice();
var len = Vector.length(c);
return c.map(v => v/len);
}
});
Object.defineProperty(Array.prototype, 'newfirst', {
value: function(i) {
var c = this.slice();
if (i >= c.length) return c;
do {
c.push(c.shift());
i--;
} while (i > 0);
return c;
}
});
Object.defineProperty(Array.prototype, 'doubleup', {
value: function(n) {
var c = [];
this.forEach(function(x) {
for (var i = 0; i < n; i++)
c.push(x);
});
return c;
}
});
Object.defineProperty(Array.prototype, 'mult', {
value: function(arr) {
var c = [];
for (var i = 0; i < this.length; i++) { c[i] = this[i] * arr[i]; }
return c;
}});
Object.defineProperty(Array.prototype, 'apply', {
value: function(fn) {
this.forEach(function(x) { x[fn].apply(x); });
}
});
Object.defineProperty(Array.prototype, 'sorted', {
value: function() {
return this.toSorted();
}
});
Object.defineProperty(Array.prototype, 'equal', {
value: function(b) {
if (this.length !== b.length) return false;
if (b == null) return false;
if (this === b) return true;
return JSON.stringify(this.sorted()) === JSON.stringify(b.sorted());
for (var i = 0; i < this.length; i++) {
if (!this[i] === b[i])
return false;
}
return true;
}});
Object.defineProperty(Array.prototype, 'mapc', {
value: function(fn) {
return this.map(x => fn(x));
}
});
Object.defineProperty(Array.prototype, 'mapvec', {
value: function(fn, b) {
return this.map((x,i) => fn(x,b[i]));
}
});
Object.defineProperty(Array.prototype, 'remove', {
value: function(b) {
var idx = this.indexOf(b);
if (idx === -1) return false;
this.splice(idx, 1);
return true;
}});
Object.defineProperty(Array.prototype, 'set', {
value: function(b) {
if (this.length !== b.length) return;
b.forEach(function(val, i) { this[i] = val; }, this);
}
});
Object.defineProperty(Array.prototype, 'flat', {
value: function() {
return [].concat.apply([],this);
}
});
Object.defineProperty(Array.prototype, 'anyjs', {
value: function(fn) {
var ev = this.every(function(x) {
return !fn(x);
});
return !ev;
}
});
/* Return true if array contains x */
Object.defineProperty(Array.prototype, 'empty', {
get: function() { return this.length === 0; },
});
Object.defineProperty(Array.prototype, 'push_unique', {
value: function(x) {
if (!this.includes(x)) this.push(x);
}});
Object.defineProperty(Array.prototype, 'unique', {
value: function() {
var c = [];
this.forEach(function(x) { c.push_unique(x); });
return c;
}
});
Object.defineProperty(Array.prototype, 'unduped', {
value: function() { return [... new Set(this)]; }
});
Object.defineProperty(Array.prototype, 'findIndex', {
value: function(fn) {
var idx = -1;
this.every(function(x, i) {
if (fn(x)) {
idx = i;
return false;
}
return true;
});
return idx;
}});
Object.defineProperty(Array.prototype, 'find', {
value: function(fn) {
var ret;
this.every(function(x) {
if (fn(x)) {
ret = x;
return false;
}
return true;
});
return ret;
}});
Object.defineProperty(Array.prototype, 'search', {
value: function(val) {
for (var i = 0; i < this.length; i++)
if (this[i] === val) return i;
return undefined;
}
});
Object.defineProperty(Array.prototype, 'last', {
value: function() { return this[this.length-1]; },
});
Object.defineProperty(Array.prototype, 'at', {
value: function(x) {
return x < 0 ? this[this.length+x] : this[x];
}});
Object.defineProperty(Array.prototype, 'wrapped', {
value: function(x) {
var c = this.slice(0, this.length);
for (var i = 0; i < x; i++)
c.push(this[i]);
return c;
}});
Object.defineProperty(Array.prototype, 'wrap_idx', {
value: function(x) {
while (x >= this.length) {
x -= this.length;
}
return x;
}
});
Object.defineProperty(Array.prototype, 'mirrored', {
value: function(x) {
var c = this.slice(0);
if (c.length <= 1) return c;
for (var i = c.length-2; i >= 0; i--)
c.push(c[i]);
return c;
}
});
Math.lerp = vector.lerp;
Math.gcd = vector.gcd;
Math.lcm = vector.lcm;
Math.sum = vector.sum;
Math.mean = vector.mean;
Math.sigma = vector.sigma;
Math.median = vector.median;
Math.variance = function(series) {
var mean = Math.mean(series);
var vnce = 0;
for (var i = 0; i < series.length; i++)
vnce += Math.pow(series[i]-mean, 2);
return vnce/(series.length);
}
Math.ci = function(series) { return 3*Math.sigma(series)/Math.sqrt(series.length); }
Math.grab_from_points = function(pos, points, slop) {
var shortest = slop;
var idx = -1;
points.forEach(function(x,i) {
if (Vector.length(pos.sub(x)) < shortest) {
shortest = Vector.length(pos.sub(x));
idx = i;
}
});
return idx;
};
Math.nearest = function(n, incr)
{
return Math.round(n/incr)*incr;
}
Math.places = function(n,digits)
{
var div = Math.pow(10,digits);
return Math.round(n*div)/div;
}
Number.hex = function(n)
{
var s = Math.floor(n).toString(16);
if (s.length === 1) s = '0' + s;
return s.uc();
}
Object.defineProperty(Object.prototype, 'lerp',{
value: function(to, t) {
var self = this;
var obj = {};
Object.keys(self).forEach(function(key) {
obj[key] = self[key].lerp(to[key],t);
});
return obj;
}});
/* MATH EXTENSIONS */
Object.defineProperty(Number.prototype, 'lerp', {
value: function(to, t) { return Math.lerp(this, to, t); }
});
Object.defineProperty(Number.prototype, 'clamp', {
value: function(from,to) { return Math.clamp(this,from,to); }
});
Math.clamp = vector.clamp;
Math.random_range = vector.random_range;
Math.rand_int = function(max) { return Math.floor(Math.random()*max); };
Math.snap = function(val, grid) {
if (!grid || grid === 1) return Math.round(val);
var rem = val%grid;
var d = val - rem;
var i = Math.round(rem/grid)*grid;
return d+i;
}
Math.angledist = vector.angledist;
Math.angledist.doc = "Find the shortest angle between two angles.";
Math.TAU = Math.PI*2;
Math.deg2rad = function(deg) { return deg * 0.0174533; };
Math.rad2deg = function(rad) { return rad / 0.0174533; };
Math.turn2rad = function(x) { return x*Math.TAU; };
Math.rad2turn = function(x) { return x/Math.TAU; };
Math.turn2deg = function(x) { return x*360; };
Math.deg2turn = function(x) { return x/360; };
Math.randomint = function(max) { return Math.clamp(Math.floor(Math.random() * max), 0, max-1); };
Math.variate = vector.variate;
/* BOUNDINGBOXES */
var bbox = {};
bbox.overlap = function(box1, box2) {
return (
box1.l > box2.l &&
box1.r < box2.r &&
box1.t < box2.t &&
box1.b > box2.b
);
return (
box1.l > box2.r ||
box1.r < box2.l ||
box1.t > box2.b ||
box1.b < box2.t
);
}
bbox.fromcwh = function(c, wh) {
return {
t: c.y+(wh.y/2),
b: c.y-(wh.y/2),
l: c.x-(wh.x/2),
r: c.x+(wh.x/2)
};
};
bbox.frompoints = function(points) {
var b= {t:0,b:0,l:0,r:0};
points.forEach(function(x) {
if (x.y > b.t) b.t = x.y;
if (x.y < b.b) b.b = x.y;
if (x.x > b.r) b.r = x.x;
if (x.x < b.l) b.l = x.x;
});
return b;
};
bbox.topoints = function(bb)
{
return [
[bb.l,bb.t],
[bb.r,bb.t],
[bb.r,bb.b],
[bb.l,bb.b]
];
}
bbox.tocwh = function(bb) {
if (!bb) return undefined;
var cwh = {};
var w = bb.r - bb.l;
var h = bb.t - bb.b;
cwh.wh = [w, h];
cwh.c = [bb.l + w/2, bb.b + h/2];
return cwh;
};
bbox.towh = function(bb) {
return [bb.r-bb.l, bb.t-bb.b];
};
bbox.pointin = function(bb, p)
{
if (bb.t < p.y || bb.b > p.y || bb.l > p.x || bb.r < p.x)
return false;
return true;
}
bbox.zero = function(bb) {
var newbb = Object.assign({},bb);
newbb.r -= newbb.l;
newbb.t -= newbb.b;
newbb.b = 0;
newbb.l = 0;
return newbb;
}
bbox.move = function(bb, pos) {
var newbb = Object.assign({}, bb);
newbb.t += pos.y;
newbb.b += pos.y;
newbb.l += pos.x;
newbb.r += pos.x;
return newbb;
};
bbox.moveto = function(bb, pos) {
bb = bbox.zero(bb);
return bbox.move(bb, pos);
}
bbox.expand = function(oldbb, x) {
if (!oldbb || !x) return;
var bb = {};
Object.assign(bb, oldbb);
if (bb.t < x.t) bb.t = x.t;
if (bb.r < x.r) bb.r = x.r;
if (bb.b > x.b) bb.b = x.b;
if (bb.l > x.l) bb.l = x.l;
return bb;
};
bbox.blwh = function(bl,wh)
{
return {
b: bl.y,
l: bl.x,
r: bl.x + wh.x,
t: bl.y + wh.y
};
}
bbox.blwh.doc = "Bounding box from (bottom left, width height)";
bbox.fromobjs = function(objs)
{
var bb = objs[0].boundingbox;
objs.forEach(function(obj) { bb = bbox.expand(bb, obj.boundingbox); });
return bb;
};
/* VECTORS */
var Vector = {};
Vector.length = function(v) { return Math.hypot(...v); }
Vector.norm = vector.norm;
Vector.project = vector.project;
Vector.dot = vector.dot;
Vector.random = function() {
var vec = [Math.random()-0.5, Math.random()-0.5];
return Vector.norm(vec);
}
Vector.angle_between = vector.angle_between;
Vector.rotate = vector.rotate;
Vector.equal = function(v1, v2, tol) {
if (!tol)
return v1.equal(v2);
var eql = true;
var c = v1.sub(v2);
c.forEach(function(x) {
if (!eql) return;
if (Math.abs(x) > tol)
eql = false;
});
return eql;
}
Vector.reflect = function(vec, plane) {
var p = Vector.norm(plane);
return vec.sub(p.scale(2*Vector.dot(vec, p)));
}
Vector.reflect_point = function(vec, point) { return point.add(vec.sub(point).scale(-1)); }
/* POINT ASSISTANCE */
function points2cm(points)
{
var x = 0;
var y = 0;
var n = points.length;
points.forEach(function(p) {
x = x + p[0];
y = y + p[1];
});
return [x/n,y/n];
};
Math.sortpointsccw = function(points)
{
var cm = points2cm(points);
var cmpoints = points.map(function(x) { return x.sub(cm); });
var ccw = cmpoints.sort(function(a,b) {
var aatan = Math.atan2(a.y, a.x);
var batan = Math.atan2(b.y, b.x);
return aatan - batan;
});
return ccw.map(function(x) { return x.add(cm); });
}
var yaml = {};
yaml.tojson = function(yaml)
{
// Replace key value pairs that are strings with quotation marks around them
yaml = yaml.replace(/(\w+):/g, '"$1":');
yaml = yaml.replace(/: ([\w\.\/]+)/g, ': "$1"'); // TODO: make this more general
yaml = yaml.split("\n");
var cont = {};
var cur = 0;
for (var i = 0; i < yaml.length; i++) {
var line = yaml[i];
var indent = line.search(/\S/);
if (indent > cur) {
if (line[indent] == "-") {
cont[indent] = "array";
yaml[i] = line.sub(indent, '[');
} else {
cont[indent] = "obj";
yaml[i] = line.sub(indent-1, '{');
}
}
if (indent < cur) {
while (cur > indent) {
if (cont[cur] === "obj")
yaml[i-1] = yaml[i-1] + "}";
else if (cont[cur] === "array")
yaml[i-1] = yaml[i-1] + "]";
delete cont[cur];
cur--;
}
}
if (indent === cur) {
if (yaml[i][indent] === '-')
yaml[i] = yaml[i].sub(indent,',');
else
yaml[i-1] = yaml[i-1] + ',';
}
cur = indent;
}
yaml = "{" + yaml.join("\n") + "}";
yaml = yaml.replace(/\s/g, '');
yaml = yaml.replace(/,}/g, '}');
yaml = yaml.replace(/,]/g, ']');
yaml = yaml.replace(/,"[^"]+"\:,/g, ',');
return yaml;
}
Math.sign = function(n) { return n >= 0 ? 1 : -1; }
return {
convert,
time,
Vector,
bbox,
yaml
};
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