91 lines
3.1 KiB
JavaScript
91 lines
3.1 KiB
JavaScript
// Minimal CoBiE analog clock logic
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const COBIE_EPOCH = 0;
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const COBIE_UNITS = {
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second: 1,
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xenocycle: 0x10,
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quantic: 0x100,
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chronon: 0x1000,
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eonstrip: 0x10000
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};
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function floorDiv(a,b){ return Math.trunc(a/b); }
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function getTAIOffsetAt(date){
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const taiEpoch = new Date('1958-01-01T00:00:00Z');
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if(date < taiEpoch) return 0;
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const leapSeconds=[
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{date:'1972-01-01T00:00:00Z',offset:10},
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{date:'1972-07-01T00:00:00Z',offset:11},
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{date:'1973-01-01T00:00:00Z',offset:12},
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{date:'1974-01-01T00:00:00Z',offset:13},
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{date:'1975-01-01T00:00:00Z',offset:14},
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{date:'1976-01-01T00:00:00Z',offset:15},
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{date:'1977-01-01T00:00:00Z',offset:16},
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{date:'1978-01-01T00:00:00Z',offset:17},
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{date:'1979-01-01T00:00:00Z',offset:18},
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{date:'1980-01-01T00:00:00Z',offset:19},
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{date:'1981-07-01T00:00:00Z',offset:20},
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{date:'1982-07-01T00:00:00Z',offset:21},
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{date:'1983-07-01T00:00:00Z',offset:22},
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{date:'1985-07-01T00:00:00Z',offset:23},
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{date:'1988-01-01T00:00:00Z',offset:24},
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{date:'1990-01-01T00:00:00Z',offset:25},
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{date:'1991-01-01T00:00:00Z',offset:26},
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{date:'1992-07-01T00:00:00Z',offset:27},
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{date:'1993-07-01T00:00:00Z',offset:28},
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{date:'1994-07-01T00:00:00Z',offset:29},
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{date:'1996-01-01T00:00:00Z',offset:30},
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{date:'1997-07-01T00:00:00Z',offset:31},
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{date:'1999-01-01T00:00:00Z',offset:32},
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{date:'2006-01-01T00:00:00Z',offset:33},
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{date:'2009-01-01T00:00:00Z',offset:34},
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{date:'2012-07-01T00:00:00Z',offset:35},
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{date:'2015-07-01T00:00:00Z',offset:36},
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{date:'2017-01-01T00:00:00Z',offset:37}
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];
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for(let i=0;i<leapSeconds.length;i++){
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const d=new Date(leapSeconds[i].date);
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if(date<d) return i===0?10:leapSeconds[i-1].offset;
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}
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return 37;
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}
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function toCobiets(date){
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const utcSec=floorDiv(date.getTime(),1000);
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const taiSec=utcSec+getTAIOffsetAt(date);
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return taiSec-COBIE_EPOCH;
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}
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function placeMarkers(){
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const clock=document.getElementById('clock');
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const radius=clock.offsetWidth/2-20;
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for(let i=0;i<16;i++){
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const angle=i/16*2*Math.PI;
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const x=radius*Math.sin(angle);
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const y=-radius*Math.cos(angle);
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const m=document.createElement('div');
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m.className='marker';
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m.textContent=i.toString(16).toUpperCase();
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m.style.left=`${clock.offsetWidth/2+x}px`;
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m.style.top=`${clock.offsetHeight/2+y}px`;
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clock.appendChild(m);
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}
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}
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function updateClock(){
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const now=new Date();
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const cob=toCobiets(now);
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const xf=(cob%COBIE_UNITS.quantic)/COBIE_UNITS.quantic;
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const qf=(cob%COBIE_UNITS.chronon)/COBIE_UNITS.chronon;
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const cf=(cob%COBIE_UNITS.eonstrip)/COBIE_UNITS.eonstrip;
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document.getElementById('handXeno').style.transform=`rotate(${xf*360}deg)`;
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document.getElementById('handQuantic').style.transform=`rotate(${qf*360}deg)`;
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document.getElementById('handChronon').style.transform=`rotate(${cf*360}deg)`;
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}
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window.addEventListener('load',()=>{
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placeMarkers();
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updateClock();
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setInterval(updateClock,1000);
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const clk=document.getElementById('clock');
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if(clk){
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clk.addEventListener('click',()=>{
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document.body.classList.toggle('fullscreen-clock');
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});
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}
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});
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