Run Detail
completedgpt-6.1-sol-proRecorded for these videos
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Provider
openrouter
Challenge Version
v2.0
Turns
1
Duration
333.1s
Total Tokens
34,027
Input Tokens
18,402
Output Tokens
15,625
Reasoning Tokens
2,386
Reasoning Effort
default
Est. Cost
$0.1931
Started
10/1/2026, 2:37:46 PM
OR Provider
OpenAI
Finish Reason
stop
Generation ID
gen-1790865467-Jw06AdmNhc7hHiKChxFp
Turns (1)
Turn #1
18,402 in15,625 out2,386 reasoning34,027 total333.0s
user
You make short animated pieces for the web, and you have spent time on the part of the internet that makes cats famous.
Build me a single HTML page: a cat in a living room that lifts off the floor and spins in the air when you click it.
The reference
Make this the Oiia Cat — the spinning cat meme, the one whose loop is written out as "oiia oiia oiiaiooooiai". Match the original's look and feel, not a generic rotation:
- A cream-and-white cat sitting square to the camera, eyes wide, staring straight down the lens, doing nothing.
- It starts turning on its vertical axis. The turn accelerates until the cat is a blur and the face is no longer readable.
- The "oiia" vocal rides the spin. Rate and pitch climb together with it, so the sound is the spin.
- In the edits this page is chasing, the cat leaves the floor. It rises as it winds up and spins in midair, and the room gets pulled into whatever the edit is doing.
Build toward what that meme feels like at full speed: too fast, too loud, and funnier every time it goes further.
The build
- It opens quiet. The cat sitting in a real living room, doing nothing in particular. Push the realism as far as one file will take you — light that comes from somewhere in the room, depth behind the cat, fur that is not a flat shape, a floor that the cat is actually resting on. Someone arriving on this page should need a second to work out that it is not a photograph. That opening second is the whole joke and it only pays off if the room is convincing first.
- Click the cat and it activates: it turns to face the viewer, lifts off the floor, and spins on its vertical axis in midair, fast, with the room going with it.
- Every click after that escalates, and escalation here means crazier, not just faster. Four stages at least, each visibly and inventively past the one before — what the cat does, how high it goes, what happens to the room, what happens to the laws of physics, what else joins in. Stage four should be the one that makes someone send the page to a friend. It still has to be worth watching: a strobing white rectangle is not stage four.
- It makes the sound. The "oiia" loop, synthesized in the file with Web Audio, rising as the spin gets faster. Making it read as a voice rather than as a tone is most of this requirement.
- Sound starts on the click and never before, and I can mute it.
House rules
- One file. Everything inline — no CDN, no external stylesheet, font, script or image.
data:URIs are fine. - No libraries.
- No network at runtime.
- No
localStorage,sessionStorage, cookies orindexedDB— sandboxed frame, they throw. - Return the file as exactly one fenced
htmlblock.
Answer in exactly these sections
The page
The single fenced html block.
The notes
Five bullets.
- How the opening frame gets its realism, and where that realism gives out.
- What you did to make it read as the Oiia cat rather than as a cat that rotates.
- The four stages, in order, and what makes each one crazier than the last.
- How the voice is synthesized, and what keeps it locked to the spin.
- The part you would fix with more time.
assistant
The page
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>Ordinary cat. Ordinary afternoon.</title>
<style>
* { box-sizing: border-box }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; background: #302b26 }
body { font-family: Georgia, "Times New Roman", serif; color: #fff8eb }
canvas { display: block; width: 100%; height: 100%; touch-action: manipulation }
.top {
position: fixed; top: 27px; left: 30px; right: 30px;
display: flex; justify-content: space-between; align-items: flex-start;
pointer-events: none; text-shadow: 0 1px 12px #221b15a0;
}
.title { font-size: 15px; letter-spacing: .03em }
.title small {
display: block; font: 10px/1.6 system-ui, sans-serif;
letter-spacing: .19em; text-transform: uppercase; opacity: .65; margin-top: 7px;
}
button {
color: inherit; border: 1px solid #fff5df45; background: #211b1840;
padding: 11px 15px; border-radius: 24px; cursor: pointer;
font: 11px system-ui, sans-serif; letter-spacing: .05em;
backdrop-filter: blur(12px);
}
button:hover { background: #fff5df25; border-color: #fff5df90 }
button:focus-visible { outline: 2px solid #fff1c2; outline-offset: 4px }
.tools { display: flex; gap: 8px; pointer-events: auto }
.bottom {
position: fixed; bottom: 28px; left: 24px; right: 24px;
text-align: center; pointer-events: none;
text-shadow: 0 2px 12px #1c130dc0;
}
#caption { font-size: clamp(19px, 2.3vw, 28px); margin-bottom: 9px }
#hint { font: 11px/1.6 system-ui, sans-serif; letter-spacing: .055em; opacity: .8 }
.steps { display: flex; justify-content: center; gap: 7px; margin: 17px 0 12px }
.steps i { width: 22px; height: 2px; background: #fff5df35; transition: background .5s, box-shadow .5s }
.steps i.on { background: #fff1c9; box-shadow: 0 0 9px #ffe8a577 }
#activate { pointer-events: auto; margin-top: 11px; min-width: 140px }
#reset { display: none }
.credit {
position: fixed; bottom: 22px; left: 25px; font: 9px system-ui, sans-serif;
opacity: .45; letter-spacing: .13em; pointer-events: none;
}
@media (max-width: 600px) {
.top { top: 19px; left: 19px; right: 19px }
.title { font-size: 12px; max-width: 145px }
.title small { font-size: 8px }
.tools { gap: 5px }
button { padding: 10px 12px }
.bottom { bottom: 21px }
.credit { display: none }
}
</style>
</head>
<body>
<canvas id="scene" aria-label="A cream-and-white cat sits in a sunlit living room. Click the cat to make it float and spin."></canvas>
<div class="top">
<div class="title">An ordinary afternoon.<small>A small domestic incident</small></div>
<div class="tools">
<button id="reset" aria-label="Return to the quiet room">Reset</button>
<button id="mute" aria-pressed="false">Sound on</button>
</div>
</div>
<div class="bottom">
<div id="caption">Nothing to see here.</div>
<div id="hint">Click the cat. It has somewhere to be.</div>
<div class="steps" aria-hidden="true"><i></i><i></i><i></i><i></i></div>
<button id="activate">Pet the cat</button>
</div>
<div class="credit">NO CATS WERE SUBJECTED TO GRAVITY</div>
<script>
(() => {
'use strict';
const canvas = document.getElementById('scene');
const ctx = canvas.getContext('2d', { alpha: false });
const W = 1440, H = 960, TAU = Math.PI * 2;
const clamp = (v, a, b) => Math.max(a, Math.min(b, v));
const lerp = (a, b, t) => a + (b - a) * t;
const smooth = (a, b, v) => {
let t = clamp((v - a) / (b - a), 0, 1);
return t * t * (3 - 2 * t);
};
let seed = 70913;
function random() {
seed = (Math.imul(seed, 1664525) + 1013904223) | 0;
return (seed >>> 0) / 4294967296;
}
function surface(w, h) {
const c = document.createElement('canvas');
c.width = w; c.height = h;
return c;
}
function ellipse(c, x, y, rx, ry, fill, rotation = 0) {
c.beginPath(); c.ellipse(x, y, rx, ry, rotation, 0, TAU);
c.fillStyle = fill; c.fill();
}
function linear(c, x, y, xx, yy, stops) {
const g = c.createLinearGradient(x, y, xx, yy);
for (const [p, col] of stops) g.addColorStop(p, col);
return g;
}
function radial(c, x, y, r, stops, rx = x, ry = y) {
const g = c.createRadialGradient(x, y, 0, rx, ry, r);
for (const [p, col] of stops) g.addColorStop(p, col);
return g;
}
function rounded(c, x, y, w, h, r, fill) {
c.beginPath(); c.roundRect(x, y, w, h, r);
c.fillStyle = fill; c.fill();
}
function path(c, d, fill, stroke, width = 1) {
const p = new Path2D(d);
if (fill) { c.fillStyle = fill; c.fill(p); }
if (stroke) { c.strokeStyle = stroke; c.lineWidth = width; c.stroke(p); }
return p;
}
function shadow(c, x, y, rx, ry, opacity) {
c.save(); c.translate(x, y); c.scale(rx, ry);
ellipse(c, 0, 0, 1, 1,
radial(c, 0, 0, 1, [[0, `rgba(31,22,15,${opacity})`], [.45, `rgba(31,22,15,${opacity*.65})`], [1, 'rgba(31,22,15,0)']]));
c.restore();
}
// A single, deterministic, high-resolution room painting.
const room = surface(W, H), r = room.getContext('2d');
r.fillStyle = linear(r, 0, 80, W, 670,
[[0, '#e5dfd0'], [.35, '#cec7b6'], [.72, '#b9b19e'], [1, '#8b8270']]);
r.fillRect(0, 0, W, H);
r.fillStyle = linear(r, 0, 0, 0, 95, [[0, '#a89e8a'], [1, '#e0d9c9']]);
path(r, 'M0 0H1440V46L0 81Z', r.fillStyle);
r.strokeStyle = '#f0eadb88'; r.lineWidth = 3;
r.beginPath(); r.moveTo(0, 81); r.lineTo(W, 46); r.stroke();
// Back-wall corner and warm reflected light.
r.fillStyle = linear(r, 1100, 0, 1440, 0, [[0, '#736a5810'], [1, '#655c4a64']]);
r.fillRect(1100, 46, 340, 575);
r.fillStyle = '#c0b8a5'; r.fillRect(0, 566, W, 19);
r.fillStyle = '#eee7d3'; r.fillRect(0, 566, W, 3);
r.fillStyle = '#756953'; r.fillRect(0, 584, W, 3);
// Window: recess, mullions, outside bokeh, translucent linen.
shadow(r, 240, 315, 220, 252, .12);
rounded(r, 59, 116, 328, 371, 3, '#928c7c');
rounded(r, 66, 121, 315, 360, 2, '#f2eee0');
r.fillStyle = linear(r, 80, 133, 350, 454, [[0, '#d9e1d6'], [.4, '#f7f2d9'], [1, '#b7bda6']]);
r.fillRect(79, 134, 289, 326);
r.save(); r.beginPath(); r.rect(79, 134, 289, 326); r.clip();
for (let i = 0; i < 130; i++) {
ellipse(r, 80 + random()*300, 260 + random()*250, 5+random()*27, 7+random()*29,
['#7c997727', '#a3b18935', '#f7f4d52c'][i%3]);
}
r.restore();
r.fillStyle = '#eeeade'; r.fillRect(214, 134, 9, 326); r.fillRect(79, 283, 289, 9);
r.fillStyle = '#aaa693'; r.fillRect(222, 134, 2, 326);
path(r, 'M55 473L388 473L411 492L44 492Z',
linear(r, 0, 473, 0, 496, [[0, '#f4efde'], [1, '#b8b09c']]));
for (let side = 0; side < 2; side++) {
const x = side ? 342 : 27;
path(r, `M${x} 98 Q${x+35} 106 ${x+73} 96 L${x+65} 506 Q${x+36} 492 ${x-2} 508Z`,
'#f4f0de9c');
for (let i = 0; i < 12; i++) {
r.fillStyle = linear(r, x+i*6, 0, x+i*6+6, 0,
[[0, '#817c6525'], [.5, '#fffff824'], [1, '#aba08b19']]);
r.fillRect(x+i*6, 105, 6, 393);
}
}
r.strokeStyle = '#716955'; r.lineWidth = 5;
r.beginPath(); r.moveTo(20, 96); r.lineTo(425, 96); r.stroke();
// Wood floor, perspective boards, individual grain and narrow bevels.
r.fillStyle = linear(r, 0, 586, 0, 960,
[[0, '#8b7258'], [.4, '#aa8a65'], [1, '#b89a76']]);
r.fillRect(0, 587, W, 373);
const vx = 540, vy = 438;
for (let i = -12; i < 20; i++) {
let a = i * 117, b = (i+1) * 117;
const xa = vx + (a-vx)*.285, xb = vx + (b-vx)*.285;
const p = path(r, `M${xa} 587L${xb} 587L${b} 960L${a} 960Z`,
['#b5997227','#46362519','#f8d19e16','#80634222'][((i%4)+4)%4]);
r.save(); r.clip(p);
for (let j = 0; j < 23; j++) {
const x = lerp(a,b,random()), endX = vx+(x-vx)*.285;
r.beginPath(); r.moveTo(endX, 587);
r.bezierCurveTo(lerp(endX,x,.3)+random()*8,700,
lerp(endX,x,.7)-random()*9,850,x,960);
r.strokeStyle = j%3 ? '#4e392514' : '#ffdfaa22';
r.lineWidth = .5+random()*1.2; r.stroke();
}
r.restore();
r.beginPath(); r.moveTo(xa, 587); r.lineTo(a,960);
r.strokeStyle = '#51402e70'; r.lineWidth = 1; r.stroke();
r.beginPath(); r.moveTo(xa+1, 587); r.lineTo(a+2,960);
r.strokeStyle = '#edd0a849'; r.stroke();
for (let j = 0; j < 3; j++) {
let yy = 638+j*110+random()*55;
let t = (yy-vy)/(960-vy);
r.beginPath(); r.moveTo(vx+(a-vx)*t, yy); r.lineTo(vx+(b-vx)*t, yy);
r.strokeStyle = '#5b463750'; r.stroke();
}
}
// A shaft of window light has the same direction as the cat's highlights.
path(r, 'M35 588L348 588L1005 960L337 960Z',
linear(r, 170, 590, 550, 940, [[0,'#ffefb719'], [.55,'#fff4c751'], [1,'#fff3c110']]));
path(r, 'M208 588L223 588L699 960L674 960Z', '#65563c14');
path(r, 'M68 688L527 688L540 700L70 700Z', '#7c67421c');
// Framed print: glazed surface with a little window reflection.
shadow(r, 812, 258, 151, 156, .16);
rounded(r, 688, 117, 246, 272, 2, '#5d4c36');
rounded(r, 697, 126, 228, 254, 1, '#e8dfca');
r.fillStyle = '#bbb8a2'; r.fillRect(724, 150, 176, 205);
path(r, 'M724 315L773 239L802 268L849 202L900 294V355H724Z', '#7b8374');
path(r, 'M724 330L794 292L850 311L900 286V355H724Z', '#9b967d');
ellipse(r, 772, 195, 22, 22, '#ddd0a2');
path(r, 'M701 132H778L923 325V379H880Z', '#fff9df0c');
r.fillStyle = '#ffffff30'; r.fillRect(698,126,226,1);
// Sofa, deliberately built in lit volumes rather than flat outlines.
shadow(r, 1110, 622, 300, 70, .35);
for (const x of [901, 1304]) {
path(r, `M${x} 601L${x+20} 601L${x+14} 660L${x+3} 660Z`, '#554234');
}
rounded(r, 871, 371, 483, 204, 37,
linear(r, 880, 379, 1360, 590, [[0,'#8e9686'], [.35,'#748071'], [1,'#465447']]));
rounded(r, 897, 390, 211, 167, 26,
linear(r, 900, 390, 1120, 555, [[0,'#a8ae9a'], [.7,'#7e8976'], [1,'#61715e']]));
rounded(r, 1118, 390, 207, 167, 26,
linear(r, 1110, 390, 1328, 555, [[0,'#929e88'], [1,'#63715e']]));
rounded(r, 868, 539, 472, 78, 20,
linear(r, 0, 539, 0, 621, [[0,'#a3ab92'], [.26,'#8d997f'], [.32,'#76866b'], [1,'#59674f']]));
r.strokeStyle = '#394c3960'; r.lineWidth = 2;
r.beginPath(); r.moveTo(1111, 552); r.lineTo(1111, 604); r.stroke();
rounded(r, 837, 458, 65, 157, 27,
linear(r, 837, 459, 903, 610, [[0,'#aab09d'], [.5,'#8a957f'], [1,'#617057']]));
rounded(r, 1303, 457, 68, 157, 25,
linear(r, 1303, 459, 1370, 600, [[0,'#89967d'], [1,'#54654e']]));
r.save(); r.translate(994,470); r.rotate(-.18);
rounded(r,-59,-61,116,126,14,
linear(r,-60,-60,60,70,[[0,'#c8b89b'], [.5,'#bba88c'], [1,'#94806a']]));
path(r, 'M-47 -44Q-15 -37 5 -48M-48 38Q-16 31 25 45M45 -34Q33 0 44 37',
null, '#77644c38', 1.5);
r.restore();
r.save(); r.translate(1211,478); r.rotate(.12);
rounded(r,-52,-61,109,118,13,
linear(r,-50,-50,50,60,[[0,'#ded5b9'], [1,'#b8b094']]));
path(r,'M-42 -44Q0 -36 41 -45M-42 45Q0 37 45 43',null,'#8b836b45');
r.restore();
// Sideboard and its small objects.
shadow(r, 466, 617, 118, 37, .23);
path(r, 'M367 486H569V597H367Z',
linear(r,367,486,568,597,[[0,'#8b6b4b'],[1,'#5d4631']]));
r.fillStyle = '#b18a60'; r.fillRect(358, 475, 220, 14);
r.fillStyle = '#4b3928'; r.fillRect(371, 491, 193, 3);
r.fillRect(459,494,2,99);
for(const x of [377,545]) { r.fillStyle='#604930'; r.fillRect(x,589,10,41) }
for(const x of [444,477]) ellipse(r,x,530,3,3,'#c1ac77');
for (let i=0;i<7;i++) {
r.save(); r.translate(390+i*10,475); r.rotate(i===0 ? -.12 : 0);
rounded(r,0,-48-random()*15,8,58,1,['#a3936b','#61747b','#90715b','#d3c6a4'][i%4]);
r.restore();
}
// Ceramic vase.
path(r,'M503 425Q494 446 496 465Q499 477 518 477Q539 476 538 461Q537 442 527 425L527 410H505Z',
linear(r,496,0,537,0,[[0,'#e3dbc4'],[.35,'#eee8d5'],[1,'#a49c86']]));
ellipse(r,516,411,12,3,'#8b8573');
for(let i=0;i<5;i++) {
r.beginPath(); r.moveTo(516,418);
r.quadraticCurveTo(505+i*5,374,480+i*19,349-i%2*23);
r.strokeStyle='#666c49'; r.lineWidth=1.3; r.stroke();
ellipse(r,490+i*17,363-i%2*25,5,13,'#7c845c',-.5+i*.2);
}
// Floor lamp and plant frame the depth behind the cat.
shadow(r, 1390, 672, 62, 21, .3);
ellipse(r, 1390,663,48,11,'#5e5648');
r.fillStyle='#635d51'; r.fillRect(1386,299,6,362);
path(r,'M1325 232H1450L1471 335H1304Z',
linear(r,1310,240,1460,335,[[0,'#f0e7c9'],[.5,'#ddd3b7'],[1,'#ada48a']]));
ellipse(r,1388,333,84,7,'#ada38a');
shadow(r, 160,650,80,24,.28);
path(r,'M122 543H194L184 642Q159 653 132 642Z',
linear(r,122,0,193,0,[[0,'#a67e5c'],[.3,'#b18a64'],[1,'#6e5039']]));
ellipse(r,158,544,36,8,'#473f2d');
for(let i=0;i<20;i++) {
const x=158+(random()-.5)*125, y=353+random()*183;
r.beginPath(); r.moveTo(160,551); r.quadraticCurveTo(166,470,x,y);
r.strokeStyle='#58634b'; r.lineWidth=2; r.stroke();
ellipse(r,x,y,12+random()*8,31+random()*12,
linear(r,x-15,y-25,x+15,y+25,[[0,'#81886b'],[.5,'#4d6246'],[1,'#344934']]),(x-160)/85);
r.strokeStyle='#b1b08a40'; r.lineWidth=.7;
r.beginPath(); r.moveTo(x,y-22); r.lineTo(x,y+22); r.stroke();
}
// Fine surface texture and lens fall-off, painted once, not flashing each frame.
const grain = r.getImageData(0,0,W,H);
for(let i=0;i<grain.data.length;i+=4) {
const n=(random()-.5)*5;
grain.data[i]+=n; grain.data[i+1]+=n; grain.data[i+2]+=n;
}
r.putImageData(grain,0,0);
r.fillStyle=radial(r,565,370,970,[[0,'#22180a00'],[.55,'#22180a00'],[1,'#21180760']]);
r.fillRect(0,0,W,H);
// Fur is stroked inside individually shaded anatomical volumes.
function fur(c, d, colors, bounds, direction=1, count=1500) {
const p = new Path2D(d);
const [x,y,w,h]=bounds;
c.fillStyle=linear(c,x,y,x+w,y+h,colors); c.fill(p);
c.save(); c.clip(p);
for(let i=0;i<count;i++) {
const xx=x+random()*w, yy=y+random()*h;
const length=2+random()*7;
c.beginPath(); c.moveTo(xx,yy);
c.quadraticCurveTo(xx+(random()-.5)*3,yy+length*.5,
xx+(xx-(x+w/2))*.028+(random()-.5)*3, yy+length*direction);
c.strokeStyle=i%4===0 ? 'rgba(84,62,43,.095)' : 'rgba(255,251,231,.22)';
c.lineWidth=.35+random()*.65; c.stroke();
}
c.restore();
}
const CW=400, CH=560;
function makeCat(back=false) {
const im=surface(CW,CH), c=im.getContext('2d');
// Curled tail, haunches, broad compact shoulders.
fur(c,'M291 373Q387 398 359 491Q349 533 290 530L272 482Q326 478 319 434Z',
[[0,'#c3ab89'],[.5,'#d5c3a6'],[1,'#93806a']],[270,373,94,162],1,1600);
fur(c,'M121 258Q69 305 57 430Q47 492 83 527Q118 542 161 517L171 345Z',
[[0,'#d6c7ab'],[.4,'#ede5d1'],[1,'#b8aa91']],[52,258,121,280],1,2000);
fur(c,'M273 264Q327 324 337 433Q348 487 316 523Q285 541 245 520L236 344Z',
[[0,'#e2d6bc'],[.55,'#c3b295'],[1,'#96866e']],[237,264,107,278],1,2000);
fur(c,'M132 205Q99 250 111 353L120 504Q195 541 275 501L287 343Q303 264 263 205Z',
back
? [[0,'#ddd0b2'],[.4,'#c8b493'],[1,'#a59172']]
: [[0,'#e1d7bd'],[.3,'#f4f0df'],[.7,'#e1ddcc'],[1,'#a69f8b']],
[106,203,190,320],1,4800);
if(!back) {
fur(c,'M142 288Q165 266 190 306L184 508Q177 535 146 528Q126 522 133 495Z',
[[0,'#f5f2e5'],[.55,'#eeeadc'],[1,'#b6b1a0']],[130,281,65,251],1,1200);
fur(c,'M208 303Q231 272 256 291L264 495Q273 529 238 534Q209 533 208 511Z',
[[0,'#ebe7d8'],[.4,'#f1eee0'],[1,'#aaa795']],[207,283,65,254],1,1200);
fur(c,'M130 500Q148 485 177 501Q194 514 184 532Q161 544 132 534Q119 519 130 500Z',
[[0,'#f6f1e1'],[.7,'#ded9c7'],[1,'#aaa38e']],[123,494,66,44],1,600);
fur(c,'M213 501Q234 487 262 503Q277 519 264 535Q238 544 213 533Q205 519 213 501Z',
[[0,'#f2eddc'],[.6,'#ded8c5'],[1,'#a49c87']],[210,494,60,45],1,600);
for(const x of [146,165,230,249]) {
path(c,`M${x} 518Q${x-2} 525 ${x} 532`,null,'#8c82713c',.8);
}
}
// Ears have thickness, velvet interiors, and pale guard hairs.
fur(c,'M112 149Q86 104 92 45Q94 35 106 43L165 94Z',
[[0,'#d1bd98'],[.6,'#c2aa86'],[1,'#998568']],[87,38,82,117],1,1100);
fur(c,'M239 91L294 40Q307 32 309 51Q318 105 287 149Z',
[[0,'#d6c19e'],[.5,'#b69d79'],[1,'#8d785e']],[235,37,83,117],1,1100);
path(c,'M108 63L145 104L110 132Q98 101 108 63Z',
linear(c,105,64,133,133,[[0,'#ae9480'],[.6,'#b69b85'],[1,'#d8c7a9']]));
path(c,'M292 63Q303 101 283 133L257 106Z',
linear(c,292,64,272,139,[[0,'#a58a75'],[1,'#d5bea0']]));
fur(c,'M103 134Q104 95 148 84Q193 69 245 86Q295 93 301 143Q319 177 301 213Q288 257 232 271Q178 280 133 250Q97 226 96 188Z',
[[0,'#e1cda8'],[.3,'#d5bf99'],[.65,'#c4aa82'],[1,'#9e886a']],
[93,78,215,196],1,6500);
// Crown shading / tiny irregular tabby marks, not cartoon stripes.
c.save();
c.globalAlpha=.13;
for(let i=0;i<18;i++) {
path(c,`M${143+i*6} ${96+random()*13}Q${150+i*5} 119 ${151+i*5} ${132+random()*8}`,
null,'#786343',1+random()*2);
}
c.restore();
if(!back) {
fur(c,'M108 190Q128 174 159 190L193 207L220 202Q263 177 293 197Q304 228 272 251Q239 278 196 271Q139 269 115 239Z',
[[0,'#eee5d0'],[.3,'#faf7e8'],[.7,'#eae5d3'],[1,'#bcb29c']],
[107,182,194,95],1,2300);
fur(c,'M183 154Q198 151 210 169L222 216L185 225L172 195Z',
[[0,'#e8dec7'],[.4,'#f8f2df'],[1,'#ded3b8']],[172,153,52,74],1,700);
function eye(x,y,angle) {
c.save(); c.translate(x,y); c.rotate(angle);
ellipse(c,0,0,30,28,'#76694f');
ellipse(c,0,1,27,25,'#242a1d');
ellipse(c,0,0,25.5,24,
radial(c,-8,-7,37,[[0,'#c6c28a'],[.5,'#a4ab6e'],[.78,'#778653'],[1,'#53613d']]));
c.save(); c.beginPath(); c.ellipse(0,0,25,24,0,0,TAU); c.clip();
for(let j=0;j<90;j++) {
const a=j/90*TAU, rr=13+random()*4;
c.beginPath(); c.moveTo(Math.cos(a)*rr,Math.sin(a)*rr);
c.lineTo(Math.cos(a)*24,Math.sin(a)*24);
c.strokeStyle=j%3===0?'#e2d29565':'#47563950'; c.lineWidth=.5; c.stroke();
}
c.restore();
ellipse(c,0,1,12,21,'#10120f');
ellipse(c,-7,-10,6,7,'#fffce2c9');
rounded(c,-10,-13,6,5,1,'#ffffffd0');
ellipse(c,7,13,2,2,'#d5dcbc77');
path(c,'M-28 -5Q-12 -31 9 -25Q22 -22 29 -6',null,'#675940',2);
path(c,'M-26 10Q0 29 24 12',null,'#e4d8bb',1.3);
c.restore();
}
eye(150,171,-.055); eye(249,171,.055);
ellipse(c,179,224,28,21,
radial(c,169,214,38,[[0,'#fcf8e9'],[1,'#c5bca7']]));
ellipse(c,222,224,29,21,
radial(c,212,214,38,[[0,'#f8f4e6'],[1,'#bfb49e']]));
path(c,'M186 208Q198 201 212 208Q211 217 200 223Q191 220 186 208Z',
linear(c,190,203,209,224,[[0,'#a98b79'],[.5,'#b39786'],[1,'#6d594c']]));
path(c,'M200 222L200 232Q188 242 178 233M200 232Q212 241 224 233',
null,'#6c6356',1.3);
ellipse(c,199,249,17,6,'#f9f5e6');
for(let i=0;i<24;i++) {
let side=i%2?-1:1;
ellipse(c,200+side*(17+random()*15),221+random()*11,.65,.65,'#8a7b6660');
}
// Thin whiskers catch the window, on the left more strongly.
for(let side of [-1,1]) for(let j=0;j<7;j++) {
c.beginPath();
c.moveTo(200+side*25,226+j*1.8);
c.quadraticCurveTo(200+side*75,215+j*6,
200+side*(105+random()*20),208+j*11);
c.strokeStyle=side<0?'#fcf5deaa':'#e0d4ba82';
c.lineWidth=.55; c.stroke();
}
}
// Soft silhouette flyaways: sparse and irregular, not a hard vector edge.
for(let i=0;i<620;i++) {
const a=random()*TAU;
const x=200+Math.cos(a)*104, y=178+Math.sin(a)*95;
if(y<99 || y>255) continue;
c.beginPath(); c.moveTo(x,y);
c.lineTo(x+Math.cos(a)*(2+random()*5),y+Math.sin(a)*(2+random()*5));
c.strokeStyle='#e3d4b575'; c.lineWidth=.4; c.stroke();
}
return im;
}
const catFront=makeCat(false), catBack=makeCat(true);
// Portable debris sprites. They are quiet room objects until gravity goes away.
const cushion=surface(130,130), pc=cushion.getContext('2d');
rounded(pc,9,10,110,110,18,
linear(pc,12,12,118,119,[[0,'#ddd3b8'],[.5,'#bbae8f'],[1,'#887d62']]));
path(pc,'M20 22Q60 33 107 22M21 108Q60 97 108 108M22 22Q31 63 21 108M107 22Q97 65 108 108',
null,'#786c5055',1.5);
const book=surface(110,80), bc=book.getContext('2d');
rounded(bc,8,12,96,57,3,'#425c60');
rounded(bc,13,18,83,43,2,'#e0d6bd');
for(let i=0;i<8;i++) { bc.fillStyle='#a99e8370'; bc.fillRect(16,22+i*4,77,1) }
bc.fillStyle='#536e70'; bc.fillRect(7,11,8,59);
let vw=innerWidth, vh=innerHeight, scale=1, ox=0, oy=0;
function resize() {
vw=innerWidth; vh=innerHeight;
const dpr=Math.min(devicePixelRatio||1,2);
canvas.width=Math.round(vw*dpr); canvas.height=Math.round(vh*dpr);
scale=Math.max(vw/W,vh/H);
ox=(vw-W*scale)/2; oy=(vh-H*scale)/2;
}
addEventListener('resize',resize); resize();
let stage=0, extra=0, speed=0, lift=0, theta=0, time=0;
let last=performance.now(), stageAge=0;
let muted=false, audio=null, currentCat={x:720,y:590};
const reduced=matchMedia('(prefers-reduced-motion: reduce)').matches;
const captions=[
'Nothing to see here.',
'The cat has left the floor.',
'The furniture has questions.',
'Gravity has left the chat.',
'The room is now the cat’s problem.'
];
function refreshUI() {
document.getElementById('caption').textContent=captions[stage];
document.getElementById('hint').textContent=stage===0
? 'Click the cat. It has somewhere to be.'
: stage===4
? 'oiia oiia oiiaiooooiai · yes, you can click again'
: 'Click again. It gets considerably less normal.';
document.getElementById('activate').textContent=stage===0?'Pet the cat':stage===4?'Further beyond':'More oiia';
document.getElementById('reset').style.display=stage?'inline-block':'none';
document.querySelectorAll('.steps i').forEach((e,i)=>e.classList.toggle('on',i<stage));
canvas.style.cursor=stage?'pointer':'default';
}
// A voiced glottal source through parallel, moving vocal-tract resonances.
// No prerecorded audio, speech service, or network resources.
function createAudio() {
const AC=window.AudioContext||window.webkitAudioContext;
if(!AC) return null;
const ac=new AC();
const master=ac.createGain(); master.gain.value=0;
const comp=ac.createDynamicsCompressor();
comp.threshold.value=-19; comp.knee.value=12; comp.ratio.value=5;
comp.attack.value=.006; comp.release.value=.1;
master.connect(comp); comp.connect(ac.destination);
const voice=ac.createOscillator();
const real=new Float32Array(65), imag=new Float32Array(65);
// A steep glottal closure supplies the upper harmonics needed for vowels.
for(let h=1;h<65;h++) imag[h]=(1/h)*Math.exp(-h/30)*(1+.14*Math.cos(h*.8));
voice.setPeriodicWave(ac.createPeriodicWave(real,imag));
const source=ac.createGain(); source.gain.value=.65;
voice.connect(source);
const filters=[], gains=[];
for(let i=0;i<4;i++) {
const f=ac.createBiquadFilter(); f.type='bandpass';
f.frequency.value=[450,800,2600,3300][i];
f.Q.value=[6,9,12,10][i];
const g=ac.createGain(); g.gain.value=[1.15,.75,.30,.12][i];
source.connect(f); f.connect(g); g.connect(master);
filters.push(f); gains.push(g);
}
// A very small aspirated component breaks the perfectly electronic timbre.
const noise=ac.createBuffer(1,ac.sampleRate,ac.sampleRate);
const data=noise.getChannelData(0);
let brown=0;
for(let i=0;i<data.length;i++) {
brown=(brown+(Math.random()*2-1)*.06)/1.025;
data[i]=brown;
}
const breath=ac.createBufferSource(); breath.buffer=noise; breath.loop=true;
const hp=ac.createBiquadFilter(); hp.type='highpass'; hp.frequency.value=900;
const ng=ac.createGain(); ng.gain.value=.055;
breath.connect(hp); hp.connect(ng); ng.connect(filters[1]);
voice.start(); breath.start();
return {ac,master,voice,filters,source,breath};
}
// Twelve short syllables, with the long "oooo" and the last broken "iai".
const vowels={
o:[440,790,2500,3300],
i:[270,2250,3010,3500],
a:[780,1230,2640,3400]
};
const phrase=['o','i','i','a','o','i','i','a','o','i','i','a','i','o','o','o','o','i','a','i'];
function soundFrame() {
if(!audio) return;
const {ac,master,voice,filters,source}=audio;
const now=ac.currentTime;
const activity=smooth(0,.6,speed);
// One oiia per 1.4 revolutions; no independent audio-loop clock to drift.
const syllables=theta/TAU/1.4*4;
const n=Math.floor(syllables), f=syllables-n;
const index=((n%phrase.length)+phrase.length)%phrase.length;
const a=vowels[phrase[index]], b=vowels[phrase[(index+1)%phrase.length]];
const transition=smooth(.57,.97,f);
const pitch=110+speed*12.5+Math.sin(theta*.65)*8;
voice.frequency.setTargetAtTime(clamp(pitch,110,420),now,.018);
const formantScale=1+Math.min(speed,18)*.012;
filters.forEach((filter,i)=>filter.frequency.setTargetAtTime(
lerp(a[i],b[i],transition)*formantScale,now,.014));
// Consonant-like separation, not four endlessly sustained organ notes.
const attack=smooth(0,.11,f), release=1-smooth(.88,1,f);
const longO=index>=13&&index<=16;
source.gain.setTargetAtTime((longO?.63:.2+.48*attack*release)*activity,now,.009);
master.gain.setTargetAtTime(muted||stage===0?0:.25+stage*.045,now,.045);
}
function activate() {
if(stage<4) stage++; else extra=Math.min(extra+1,10);
stageAge=0;
if(!audio) {
try { audio=createAudio() } catch(e) { audio=null }
}
if(audio) audio.ac.resume().catch(()=>{});
refreshUI();
}
document.getElementById('activate').addEventListener('click',activate);
document.getElementById('reset').addEventListener('click',()=>{
stage=0; extra=0; speed=0; theta=0; lift=0; stageAge=0;
if(audio) audio.master.gain.setTargetAtTime(0,audio.ac.currentTime,.06);
refreshUI();
});
document.getElementById('mute').addEventListener('click',()=>{
muted=!muted;
document.getElementById('mute').textContent=muted?'Sound off':'Sound on';
document.getElementById('mute').setAttribute('aria-pressed',String(muted));
if(audio) audio.master.gain.setTargetAtTime(muted?0:stage?.25+stage*.045:0,
audio.ac.currentTime,.04);
});
canvas.addEventListener('pointerdown',e=>{
const x=(e.clientX-ox)/scale, y=(e.clientY-oy)/scale;
if(Math.abs(x-currentCat.x)<165 && Math.abs(y-currentCat.y)<235) activate();
});
canvas.addEventListener('pointermove',e=>{
const x=(e.clientX-ox)/scale, y=(e.clientY-oy)/scale;
canvas.style.cursor=Math.abs(x-currentCat.x)<165&&Math.abs(y-currentCat.y)<235?'pointer':'default';
});
function spinningCat(c,x,bottom,height,angle,alpha=1) {
const cosine=Math.cos(angle), sine=Math.sin(angle);
const width=.55+.45*Math.abs(cosine);
c.save(); c.globalAlpha*=alpha;
c.translate(x,bottom);
// Only horizontal foreshortening: this is a yaw, not a cartwheel.
c.scale(height/CH*width,height/CH);
c.drawImage(catBack,-CW/2,-CH);
const front=smooth(-.02,.75,cosine);
if(front>0) {
c.globalAlpha*=front;
c.translate(sine*17,0);
c.drawImage(catFront,-CW/2,-CH);
}
c.restore();
}
function debris(c,x,y,asset,size,angle,alpha=1) {
c.save(); c.globalAlpha*=alpha;
c.translate(x,y); c.rotate(angle);
c.drawImage(asset,-size/2,-size/2,size,size);
c.restore();
}
function portal(c,x,y,amount) {
c.save(); c.translate(x,y);
// A tilted orbital aperture, with a continuous warm-to-violet light field.
c.scale(1,.66);
const glow=radial(c,0,0,445,[
[0,'#0e102ae8'],[.4,'#262340bb'],[.63,'#625086a0'],
[.72,'#c3a7e470'],[.84,'#e6c1b336'],[1,'#bda0ff00']
]);
ellipse(c,0,0,445,445,glow);
for(let i=0;i<9;i++) {
let rad=136+i*30+Math.sin(time*.6+i)*7;
c.beginPath(); c.ellipse(0,0,rad,rad,0,0,TAU);
c.strokeStyle=`rgba(${180+i*5},${154+i*6},240,${.12+(i%3)*.09})`;
c.lineWidth=i%3===0?4:1; c.stroke();
}
// The room returns, smaller and smaller, inside its own gravitational well.
for(let j=5;j>=0;j--) {
const sz=100+j*52;
c.save(); c.rotate(-time*.12+j*.38);
c.globalAlpha=.13+j*.045;
c.beginPath(); c.roundRect(-sz/2,-sz/2,sz,sz,8); c.clip();
c.drawImage(room,380,130,720,720,-sz/2,-sz/2,sz,sz);
c.restore();
}
c.restore();
}
function render(now) {
const dt=Math.min((now-last)/1000,.045); last=now; time+=dt; stageAge+=dt;
const targets=[0,2.7,5.2,8.4,12.8+extra*.55];
const targetLift=[0,82,158,222,265+Math.min(extra*7,45)];
speed=lerp(speed,targets[stage],1-Math.exp(-dt*(stage?1.1:8)));
lift=lerp(lift,targetLift[stage],1-Math.exp(-dt*1.55));
// Reduced-motion retains the physics tableaux without the aggressive camera.
theta+=dt*speed*TAU*(reduced?.3:1);
soundFrame();
const dpr=canvas.width/vw;
ctx.setTransform(dpr,0,0,dpr,0,0);
ctx.fillStyle='#28231f'; ctx.fillRect(0,0,vw,vh);
ctx.translate(ox,oy); ctx.scale(scale,scale);
const chaos=smooth(4.8,11,speed);
const cosmic=stage===4?smooth(0,3,stageAge):0;
const wobble=reduced?0:chaos;
ctx.save();
ctx.translate(720,480);
ctx.rotate(wobble*(Math.sin(time*.73)*.045+Math.sin(time*1.4)*.022));
const zoom=1+chaos*.025;
ctx.scale(zoom,zoom); ctx.translate(-720,-480);
if(stage<3||reduced) ctx.drawImage(room,0,0);
else {
// Gravity bends the architecture in continuous horizontal bands.
const band=12;
for(let y=0;y<H;y+=band) {
const bend=Math.sin(y/H*5+time*.9)*chaos*15
+Math.sin(y/H*9-time*.55)*cosmic*14;
ctx.drawImage(room,0,y,W,band,-24+bend,y,W+48,band+.6);
}
}
// As the cat starts to own the room, the room loses ordinary afternoon light.
ctx.fillStyle=`rgba(19,16,34,${cosmic*.38})`; ctx.fillRect(0,0,W,H);
ctx.restore();
const hover=stage?Math.sin(time*(1.8+stage*.2))*Math.min(lift*.045,10):0;
const cx=720+(stage>=3?Math.sin(time*.65)*22:0);
const bottom=790-lift+hover;
currentCat={x:cx,y:bottom-201};
// The physical shadow stays ON the floor as the cat separates from it.
shadow(ctx,720+lift*.24,792+lift*.035,
135+lift*.16,20+lift*.025,.44*Math.exp(-lift/240));
if(stage) {
ctx.save();
ctx.translate(720,800); ctx.scale(1,.24);
for(let j=0;j<3;j++) {
const radius=80+j*30+lift*.28;
ctx.beginPath(); ctx.arc(0,0,radius,0,TAU);
ctx.strokeStyle=`rgba(236,217,161,${.10+stage*.025-j*.02})`;
ctx.lineWidth=2; ctx.stroke();
}
ctx.restore();
}
if(stage>=2) {
const amount=smooth(0,2,stageAge);
const angle=time*(.8+stage*.18);
// The sofa's cushions and a book become a small satellite system.
for(let i=0;i<3;i++) {
const a=angle+i*TAU/3, depth=Math.sin(a);
const xx=cx+Math.cos(a)*(192+stage*13);
const yy=bottom-145+depth*66;
if(depth<0) debris(ctx,xx,yy,i===1?book:cushion,
(i===1?72:79)*(1+depth*.1)*amount,a*.5);
}
}
if(cosmic>0) {
ctx.save(); ctx.globalAlpha=cosmic;
portal(ctx,cx,bottom-173,cosmic);
// Little living rooms orbit their own living room. No flash cuts.
const satellites=6+Math.min(extra,4);
for(let j=0;j<satellites;j++) {
const a=time*.27+j*TAU/satellites;
const x=cx+Math.cos(a)*(360+Math.sin(j)*28);
const y=bottom-170+Math.sin(a)*215;
const sz=83+(Math.sin(a)+1)*19;
ctx.save(); ctx.translate(x,y); ctx.rotate(a+.2);
ctx.shadowColor='#e2cfff77'; ctx.shadowBlur=15;
rounded(ctx,-sz*.7,-sz*.45,sz*1.4,sz*.9,5,'#c2a8bd');
ctx.shadowBlur=0;
ctx.beginPath(); ctx.roundRect(-sz*.68,-sz*.43,sz*1.36,sz*.86,4); ctx.clip();
ctx.drawImage(room,-sz*.68,-sz*.43,sz*1.36,sz*.86);
spinningCat(ctx,0,sz*.35,sz*.58,theta*.55+j);
ctx.restore();
}
// A coherent, slowly travelling accretion stream, not a white strobe.
for(let j=0;j<95;j++) {
const a=j*2.399+time*.19;
const rad=250+(j%17)*9;
const xx=cx+Math.cos(a)*rad;
const yy=bottom-172+Math.sin(a)*rad*.56;
ellipse(ctx,xx,yy,1+(j%3)*.45,1+(j%3)*.45,
j%3?'#ffe6bd80':'#d7c2ffb0');
}
ctx.restore();
}
if(stage>=3) {
const a=time*.53;
// A miniature sofa detaches into orbit: the furniture has joined the edit.
const x=cx+Math.cos(a)*305, y=bottom-180+Math.sin(a)*150;
ctx.save(); ctx.translate(x,y); ctx.rotate(a*.4);
ctx.globalAlpha=smooth(0,2,stageAge);
ctx.drawImage(room,827,367,550,301,-103,-58,206,113);
ctx.restore();
// The rug that wasn't there before: a continuously turning floor galaxy.
ctx.save(); ctx.translate(720,803); ctx.scale(1,.19); ctx.rotate(time*.35);
for(let j=0;j<4;j++) {
ctx.beginPath();
for(let k=0;k<150;k++) {
const q=k/149, a=q*TAU*1.8+j*TAU/4;
const rad=75+q*295;
const x=Math.cos(a)*rad, y=Math.sin(a)*rad;
k?ctx.lineTo(x,y):ctx.moveTo(x,y);
}
ctx.strokeStyle=`rgba(235,210,174,${.12+cosmic*.10})`;
ctx.lineWidth=3; ctx.stroke();
}
ctx.restore();
}
// At high speed the accumulated exposures erase the face into a cream blur.
const smear=smooth(3.2,9,speed);
if(smear>0) {
ctx.save();
ctx.globalCompositeOperation='screen';
const trails=reduced?2:7;
for(let j=trails;j>0;j--) {
const lag=j*.008*(1+stage*.25);
spinningCat(ctx,cx+Math.sin(theta-lag*speed*TAU)*smear*8,
bottom+Math.cos(theta*.3+j)*smear*2,404,
theta-lag*speed*TAU,smear*.068);
}
ctx.restore();
}
spinningCat(ctx,cx,bottom,404,theta,1-smear*.18);
if(stage>=2) {
const amount=smooth(0,2,stageAge);
const angle=time*(.8+stage*.18);
for(let i=0;i<3;i++) {
const a=angle+i*TAU/3, depth=Math.sin(a);
if(depth>=0) debris(ctx,cx+Math.cos(a)*(192+stage*13),
bottom-145+depth*66,i===1?book:cushion,
(i===1?72:79)*(1+depth*.1)*amount,a*.5);
}
}
if(cosmic>.1) {
// A pair of orbiting Oiias brings the joke back to the cat.
for(let i=0;i<2;i++) {
const a=time*.83+i*Math.PI;
const x=cx+Math.cos(a)*248;
const y=bottom-125+Math.sin(a)*126;
spinningCat(ctx,x,y,108,theta*(i?-.67:.83)+i,cosmic*.92);
}
}
// Deliberately leave the opening entirely still; no animation before the click.
requestAnimationFrame(render);
}
refreshUI();
requestAnimationFrame(render);
})();
</script>
</body>
</html>
The notes
- Opening realism: A deterministic canvas painting supplies perspective wood grain, window light, translucent curtains, shaded upholstery, fine image grain, and a contact shadow. The cat has layered anatomical volumes, thousands of fur strokes, reflective irises, and whiskers. It remains an illustration; true photographic realism is where this one-file approach gives out.
- Oiia identity: The cream-and-white cat sits squarely, with wide eyes and an expressionless stare. Horizontal foreshortening and front/back views simulate vertical-axis rotation; accumulated exposures progressively obscure its face rather than turning it into a cartwheeling sticker.
- Four stages: First, airborne wind-up. Second, cushions and a book become satellites. Third, architecture bends, the sofa orbits, and the floor develops spiral currents. Fourth, the living room becomes a recursive gravitational aperture, surrounded by miniature rooms and spinning cats. Further clicks add satellites and intensity.
- Voice and synchronization: Web Audio runs a harmonic-rich glottal source through moving vowel-formant filters, with breath noise and syllable envelopes spelling out the oiia phrase. Vowel progression follows accumulated rotation, while pitch follows spin speed. Audio starts only after activation; mute and reset remain available.
- With more time: I would replace the sprite-based yaw with a procedural, genuinely three-dimensional furry cat and spend the largest share of the remaining work on a more convincing glottal voice—especially the slurred transitions of the original meme.
Attachments
openai/gpt-6.1-sol-pro — page