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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Timeline face — prototype 5</title>
<style>
:root{
--ground:#050505; --cream:#f3e7c5; --silver:#bfc4d0; --steel:#969385;
--dim:#7c838a; --gold:#dab53d; --gold-hi:#ffd75f; --slate:#54677d;
--night:#39435a; --line:#2c2823; --now:#c8452f;
--mono:"BerkeleyMono Nerd Font","Berkeley Mono",ui-monospace,monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:#111;color:var(--silver);font-family:var(--mono)}
.chrome{padding:14px 18px 0;font-size:13px;letter-spacing:.16em;
text-transform:uppercase;color:var(--steel)}
.chrome b{color:var(--cream);font-weight:700}
.bar{padding:10px 18px 12px;display:flex;gap:10px;align-items:center;font-size:13px}
button{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
background:#191919;color:var(--silver);border:1px solid #2e2e2e;padding:6px 11px;cursor:pointer}
button.on{background:var(--gold);color:#111;border-color:var(--gold)}
.note{color:var(--dim);font-size:12px;padding:0 18px 12px;max-width:1180px;line-height:1.55}
.stage{margin:0 18px 18px;border:1px solid #262626;background:var(--ground);
width:calc(100% - 36px);aspect-ratio:3440/1440;position:relative}
svg{position:absolute;inset:0;width:100%;height:100%}
</style>
</head>
<body>
<div class="chrome">Timeline face · prototype 5 · <b>synthetic events</b></div>
<div class="bar">
<span style="color:var(--steel)">latitude</span>
<button data-y="rank" class="on">ranked — evenly spaced</button>
<button data-y="true">true — honest degrees</button>
<span style="width:20px"></span>
<button id="tscrub">scrub the day</button>
</div>
<div class="note">
x is now each city's <em>clock</em> offset from home, not its longitude.
Longitude only approximates time — zones are political, and against this
roster it is off by up to 1.32 h (Tokyo), partly because New Orleans is on
daylight time. So a city now sits exactly under its own local hour and an
event N hours ahead lands on the living-that-hour city with no error at all.
Latitude still sets y, and Tokyo really is south of Athens and Yerevan
— 35.7°N against 38.0° and 40.2°.
Events are invented; the roster is real.
</div>
<div class="stage"><svg id="face" viewBox="0 0 3440 1440"></svg></div>
<script>
// lat/lon are the roster's own — worldclock.conf already carries them.
const CITIES = [
{tz:"Pacific/Honolulu", label:"Honolulu", lat: 21.31, lon:-157.86},
{tz:"America/Anchorage", label:"Anchorage", lat: 61.22, lon:-149.90},
{tz:"America/Los_Angeles",label:"Berkeley", lat: 37.87, lon:-122.27},
{tz:"America/Chicago", label:"New Orleans",lat: 29.95, lon: -90.07, home:true},
{tz:"America/New_York", label:"New York", lat: 40.71, lon: -74.01},
{tz:"Europe/London", label:"London", lat: 51.51, lon: -0.13},
{tz:"Europe/Paris", label:"Paris", lat: 48.86, lon: 2.35},
{tz:"Europe/Athens", label:"Athens", lat: 37.98, lon: 23.73},
{tz:"Europe/Istanbul", label:"Istanbul", lat: 41.01, lon: 28.98},
{tz:"Asia/Yerevan", label:"Yerevan", lat: 40.18, lon: 44.51},
{tz:"Asia/Kolkata", label:"Delhi", lat: 28.61, lon: 77.21},
{tz:"Asia/Shanghai", label:"Shanghai", lat: 31.23, lon: 121.47},
{tz:"Asia/Tokyo", label:"Tokyo", lat: 35.68, lon: 139.69},
{tz:"Australia/Sydney", label:"Sydney", lat:-33.87, lon: 151.21},
{tz:"Pacific/Auckland", label:"Wellington", lat:-41.29, lon: 174.78},
];
const LON = CITIES.map(c=>c.lon), LAT = CITIES.map(c=>c.lat);
const LON0=Math.min(...LON), LON1=Math.max(...LON);
const LAT0=Math.min(...LAT), LAT1=Math.max(...LAT);
// north-to-south rank, for the evenly-spaced variant
const RANK = CITIES.slice().sort((a,b)=>b.lat-a.lat).map(c=>c.label);
// One fixed instant the whole fixture hangs off. Captured once at load so the
// events keep absolute times and drift leftward as the day advances.
const BASE = Date.now();
const FIXTURE = [
{dh:-3.4,dur:25,title:"Morning prep"}, {dh:-1.9,dur:15,title:"Daily standup"},
{dh:-0.6,dur:30,title:"Review inbox"}, {dh:0.8,dur:25,title:"Weekly 1:1"},
{dh:2.3,dur:60,title:"Design review"}, {dh:4.1,dur:30,title:"Vendor call"},
{dh:6.5,dur:45,title:"Planning"}, {dh:9.2,dur:20,title:"Wind down"},
{dh:12.0,dur:30,title:"Goodnight"},
];
const W=3440, H=1440, SPAN_H=24, MAX_FONT=72, NS="http://www.w3.org/2000/svg";
const svg=document.getElementById("face");
let yMode="rank", scrub=null;
const greyFor = sz => Math.floor(Math.min(MAX_FONT,sz)*127/MAX_FONT)+128;
const rgb = l => `rgb(${l},${l},${l})`;
function el(n,a,t){const e=document.createElementNS(NS,n);for(const k in a)e.setAttribute(k,a[k]);
if(t!=null)e.textContent=t;return e;}
function tzParts(d,tz){const f=new Intl.DateTimeFormat("en-GB",{timeZone:tz,hour12:false,
hour:"2-digit",minute:"2-digit"});const p={};for(const{type,value}of f.formatToParts(d))p[type]=value;return p;}
const isDay = h => h>=6 && h<19;
const now = () => scrub!=null ? new Date(scrub) : new Date();
// Geography, not rank. x is real longitude, so the crossing still falls out of
// where home sits — longitude IS timezone. y is latitude, north up, which is
// the whole point of this iteration.
// The roster spans Honolulu at -5 h to Wellington at +17 h, so 22 of the 24
// hours are spoken for. That pins the crossing between 20.8% (or Honolulu drops
// off the left) and 29.2% (or Wellington drops off the right). 21% is the
// tightest value that holds, so Craig's 20% was short by a hair -- and the
// window is genuinely almost forced.
const CROSS_FRAC = 0.21;
function geom(){
const M={l:230,r:230,t:150,b:200};
const hi=CITIES.findIndex(c=>c.home);
const [hx,hy]=cityXY(CITIES[hi],{x0:M.l,x1:W-M.r,y0:M.t,y1:H-M.b},now());
return {x0:M.l, x1:W-M.r, y0:M.t, y1:H-M.b, n:CITIES.length, hi,
frac:(hx-M.l)/(W-M.l-M.r), crossX:hx, homeY:hy};
}
// x is the city's CLOCK offset from home, not its longitude.
//
// Longitude is only an approximation of time, because time zones are political.
// Measured against this roster it is off by up to 1.32 h -- Tokyo's zone sits
// east of its meridian, Shanghai spans a huge span on one zone, and New Orleans
// is on daylight time (solar UTC-6, clock UTC-5), which shifts every comparison.
// Placing by longitude put Tokyo 1.3 h right of the hour it actually reads.
// Placing by clock offset makes a city sit exactly under its own local hour, so
// an event N hours ahead lands on the living-that-hour city with no error.
function tzOffsetHours(date, tz){
const f = new Intl.DateTimeFormat("en-US",{timeZone:tz,hour12:false,
year:"numeric",month:"2-digit",day:"2-digit",
hour:"2-digit",minute:"2-digit",second:"2-digit"});
const p={}; for(const {type,value} of f.formatToParts(date)) p[type]=value;
const asUTC = Date.UTC(+p.year, p.month-1, +p.day,
p.hour==="24"?0:+p.hour, +p.minute, +p.second);
return (asUTC - Math.floor(date.getTime()/1000)*1000)/3600000;
}
const WEST_H = CROSS_FRAC * 24;
function relHours(c, ref){
const h = tzOffsetHours(ref, c.tz) - tzOffsetHours(ref, HOME_TZ);
return ((h + WEST_H) % 24 + 24) % 24 - WEST_H;
}
const HOME_TZ = CITIES.find(c=>c.home).tz;
function cityXY(c,g,ref){
const fx = CROSS_FRAC + relHours(c, ref||new Date())/24;
const fy = yMode==="true"
? (c.lat-LAT0)/(LAT1-LAT0) // honest latitude
: 1-RANK.indexOf(c.label)/(CITIES.length-1); // even spacing, order kept
return [g.x0+fx*(g.x1-g.x0), g.y1-fy*(g.y1-g.y0)];
}
const cityPos = (g,i,ref) => cityXY(CITIES[i],g,ref);
const pxPerHour = g => (g.x1-g.x0)/SPAN_H;
const timeToX = (g,t,ref) => g.crossX + (t-ref)/3600000*pxPerHour(g);
function drawDiagonal(g,ref){
// No connecting wire. Once y is latitude the cities are a scatter, not a
// sequence, and a polyline through them in longitude order draws a zigzag
// that asserts an adjacency the data does not have. The equator earns a rule
// instead — it is the one latitude that means something here.
if (yMode === "true") {
const eq = g.y1 - ((0-LAT0)/(LAT1-LAT0))*(g.y1-g.y0);
svg.appendChild(el("line",{x1:g.x0,y1:eq,x2:g.x1,y2:eq,stroke:"var(--line)",
"stroke-width":1,"stroke-dasharray":"6 10","stroke-opacity":0.5}));
svg.appendChild(el("text",{x:g.x0-14,y:eq+5,"text-anchor":"end","font-size":15,
fill:"var(--night)","letter-spacing":"0.14em"},"EQUATOR"));
}
CITIES.forEach((c,i)=>{
const [x,y]=cityPos(g,i,ref);
const p=tzParts(ref,c.tz), hr=parseInt(p.hour,10), day=isDay(hr);
const size = c.home?27:20;
const col = c.home?"var(--gold)":(day?"var(--cream)":"var(--slate)");
svg.appendChild(el("circle",{cx:x,cy:y,r:c.home?6:2.5,
fill:c.home?"var(--gold)":(day?"var(--cream)":"var(--night)")}));
// label sits above-left of its node so it never leaves the frame
svg.appendChild(el("text",{x:x-16,y:y-16,"text-anchor":"end","font-size":size,fill:col,
"letter-spacing":"0.18em","font-weight":c.home?700:400},
c.label.toUpperCase()+(day?"":" ☾")));
svg.appendChild(el("text",{x:x+16,y:y-16,"font-size":size*0.95,
fill:c.home?"var(--gold-hi)":(day?"var(--steel)":"var(--night)"),
"letter-spacing":"0.06em"},`${p.hour}:${p.minute}`));
});
}
function drawHourAxis(g,ref){
const pph=pxPerHour(g), y=g.homeY, size=22;
svg.appendChild(el("line",{x1:g.x0,y1:y,x2:g.x1,y2:y,stroke:"var(--line)","stroke-width":1}));
const h0=new Date(ref.getTime()-(g.crossX-g.x0)/pph*3600000); h0.setMinutes(0,0,0);
for(let k=0;k<=SPAN_H+1;k++){
const t=new Date(h0.getTime()+k*3600000), x=timeToX(g,t.getTime(),ref.getTime());
if(x<g.x0-1||x>g.x1+1) continue;
const future=t.getTime()>=ref.getTime();
const lvl=future?greyFor(size):Math.round(greyFor(size)*0.40);
svg.appendChild(el("line",{x1:x,y1:y,x2:x,y2:y+11,stroke:rgb(lvl),
"stroke-width":1,"stroke-opacity":0.6}));
svg.appendChild(el("text",{x,y:y+40,"text-anchor":"middle","font-size":size*0.8,
fill:rgb(lvl),"letter-spacing":"0.12em"},String(t.getHours()).padStart(2,"0")));
}
}
function drawEvents(g,ref){
const refMs=ref.getTime(), pph=pxPerHour(g), y=g.homeY;
// Anchored to a fixed instant, NOT to refMs. Recomputing start from the
// current moment pinned every event to the crossing, so the clock labels
// advanced while nothing moved. Real events sit at fixed instants and the
// day flows past them right to left.
const evs=FIXTURE.map(e=>({...e,start:BASE+e.dh*3600000})).sort((a,b)=>a.start-b.start);
const next=evs.find(e=>e.start>=refMs);
const lanes=[];
evs.forEach(e=>{
const x=timeToX(g,e.start,refMs);
if(x<g.x0-30||x>g.x1+30) return;
const wpx=Math.max(4,(e.dur/60)*pph), future=e.start>=refMs;
const isNext = next && e.start===next.start;
const est=e.title.length*11+70;
let lane=0; while(lanes[lane]!=null&&lanes[lane]>x-est) lane++;
lanes[lane]=x+est;
const ly = y - 46 - lane*46; // events live above the axis only
const lvl = future?236:100;
const col = isNext?"var(--gold-hi)":rgb(lvl);
svg.appendChild(el("rect",{x,y:y-5,width:wpx,height:10,fill:col,
"fill-opacity":isNext?0.95:(future?0.5:0.25)}));
svg.appendChild(el("line",{x1:x,y1:y-6,x2:x,y2:ly+10,stroke:col,
"stroke-width":isNext?1.6:0.8,"stroke-opacity":isNext?0.85:0.3}));
const d=new Date(e.start);
const hhmm=`${String(d.getHours()).padStart(2,"0")}:${String(d.getMinutes()).padStart(2,"0")}`;
svg.appendChild(el("text",{x,y:ly,"text-anchor":"middle","font-size":isNext?32:21,
fill:col,"font-weight":isNext?700:400,"letter-spacing":"0.05em"},
isNext?`${hhmm} ${e.title}`:e.title));
if(!isNext) svg.appendChild(el("text",{x,y:ly-21,"text-anchor":"middle","font-size":15,
fill:rgb(Math.round(lvl*0.6)),"letter-spacing":"0.1em"},hhmm));
});
}
function drawCrossing(g,ref){
svg.appendChild(el("line",{x1:g.crossX,y1:g.y0-60,x2:g.crossX,y2:g.y1+60,
stroke:"var(--now)","stroke-width":1.2,"stroke-opacity":0.55}));
svg.appendChild(el("circle",{cx:g.crossX,cy:g.homeY,r:8,fill:"var(--now)"}));
const p=tzParts(ref,"America/Chicago");
svg.appendChild(el("text",{x:g.crossX,y:g.y1+108,"text-anchor":"middle","font-size":30,
fill:"var(--now)","letter-spacing":"0.16em"},`NOW ${p.hour}:${p.minute}`));
svg.appendChild(el("text",{x:g.crossX,y:g.y1+140,"text-anchor":"middle","font-size":15,
fill:"var(--dim)","letter-spacing":"0.14em"},
`CROSSING ${(g.frac*100).toFixed(1)}%`));
}
function render(){
while(svg.firstChild) svg.removeChild(svg.firstChild);
const ref=now(), g=geom();
drawDiagonal(g,ref);
drawHourAxis(g,ref);
drawEvents(g,ref);
drawCrossing(g,ref);
}
document.querySelectorAll("button[data-y]").forEach(b=>b.addEventListener("click",()=>{
yMode=b.dataset.y;
document.querySelectorAll("button[data-y]").forEach(o=>o.classList.toggle("on",o===b));
render();
}));
document.getElementById("tscrub").addEventListener("click",e=>{
scrub = scrub==null ? Date.now() : null;
e.target.classList.toggle("on", scrub!=null);
});
setInterval(()=>{ if(scrub!=null) scrub+=4*60000; render(); },250);
render();
</script>
</body>
</html>
|
