Run Detail

completedgpt-6.1-terra-pro

85very good

Every model's answer from this round

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Provider

openrouter

Challenge Version

v1.0

Turns

Duration

Batched — not timed

Total Tokens

33,914

Input Tokens

17,736

Output Tokens

16,178

Reasoning Tokens

4,317

Reasoning Effort

default

Est. Cost

$0.0493

Started

10/27/2026, 10:38:01 AM

OR Provider

OpenAI

Finish Reason

stop

Generation ID

gen-batch-1793097481-8c2908d8a61173ddefa6

Turns (1)

Turn #1

17,736 in16,178 out4,317 reasoning33,914 total

user

You build physics toys, and you have held an umbrella in a gale.

Build me a single HTML page: a person holding an umbrella in wind that keeps getting stronger.

The build

The wind rises over time, and I can drive it myself as well — slider, keys, your call — including back down.
The umbrella answers the wind. The canopy flexes, the frame loads up, and past some point it turns inside out. It can be wrenched sideways, and it can get away entirely.
Rain falls, and its direction and speed follow the wind.
The person compensates: lean, grip, footing, bracing. They stay attached to the ground; the umbrella stays attached to them until it doesn't.
Show the current wind speed on screen.
The art is yours. Side view is the obvious choice and you do not have to take it.

House rules

One file. Everything inline — no CDN, no external stylesheet, font, script or image. data: URIs are fine.
No libraries. No physics engine — write your own.
No network at runtime.
No localStorage, sessionStorage, cookies or indexedDB — sandboxed frame, they throw.
Return the file as exactly one fenced html block.

Answer in exactly these sections

The model

One paragraph, before the file: what the canopy is made of in your code, what inversion is as a state change, and what decides when it happens.

The page

The single fenced html block.

What it actually does

Where it looks right and where it looks wrong. Everyone who has held an umbrella knows what one does in wind, so say what yours gets wrong before I find it.

assistant

The model

The canopy is a curved, flexible 2D fabric profile supported by drawn ribs around a hub. Wind bends the profile and applies torque to the shaft; inversion is a latched state change that makes the rim spring upward past the hub. It triggers above a wind threshold and springs back only after the wind drops below a lower threshold. Sustained stronger wind builds grip strain until the umbrella is released.

The page

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Against the weather</title>
<style>
  :root {
    color-scheme: dark;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #101c27;
    color: #eef4f3;
  }
  * { box-sizing: border-box; }
  body { margin: 0; overflow: hidden; }
  main {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    min-height: 380px;
    overflow: hidden;
    background: #1d303d;
  }
  canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
  .top {
    position: absolute;
    top: clamp(20px, 4vw, 42px);
    left: clamp(20px, 4vw, 48px);
    right: clamp(20px, 4vw, 48px);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 20px;
    pointer-events: none;
  }
  .eyebrow {
    margin: 0 0 7px;
    color: #a9c4c6;
    font-size: 10px;
    font-weight: 750;
    letter-spacing: .19em;
    text-transform: uppercase;
  }
  h1 {
    margin: 0;
    font-size: clamp(25px, 4.5vw, 48px);
    line-height: 1;
    letter-spacing: -.045em;
    font-weight: 650;
  }
  .subtitle {
    margin: 9px 0 0;
    color: #b9cbcd;
    font-size: 13px;
  }
  .readout { text-align: right; white-space: nowrap; }
  .speed {
    font-size: clamp(31px, 5vw, 52px);
    line-height: .9;
    font-weight: 600;
    letter-spacing: -.055em;
    font-variant-numeric: tabular-nums;
  }
  .speed span { font-size: .33em; letter-spacing: 0; color: #b9cbcd; }
  .condition {
    margin-top: 9px;
    color: #f1bc81;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
  }
  .panel {
    position: absolute;
    left: clamp(16px, 3vw, 36px);
    right: clamp(16px, 3vw, 36px);
    bottom: clamp(16px, 3vw, 30px);
    display: grid;
    grid-template-columns: minmax(180px, 1fr) auto;
    gap: 16px 28px;
    align-items: end;
    padding: 19px 22px;
    border: 1px solid rgba(207, 227, 225, .18);
    border-radius: 14px;
    background: rgba(14, 26, 35, .87);
    box-shadow: 0 12px 40px rgba(0, 0, 0, .16);
    backdrop-filter: blur(12px);
  }
  .slider-heading {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
    color: #e7efed;
    font-size: 12px;
    font-weight: 650;
  }
  .slider-heading span { color: #9fb6b9; font-weight: 450; }
  input[type="range"] {
    display: block;
    width: 100%;
    margin: 0;
    accent-color: #eaa978;
    cursor: pointer;
  }
  .range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 7px;
    color: #8da5a9;
    font-size: 10px;
    letter-spacing: .04em;
  }
  .buttons { display: flex; gap: 8px; align-items: center; }
  button {
    min-height: 40px;
    padding: 0 15px;
    border: 1px solid rgba(210, 229, 226, .25);
    border-radius: 7px;
    background: rgba(255,255,255,.055);
    color: #edf4f1;
    font: inherit;
    font-size: 12px;
    font-weight: 650;
    white-space: nowrap;
    cursor: pointer;
  }
  button:hover { background: rgba(255,255,255,.12); }
  button:focus-visible, input:focus-visible { outline: 2px solid #ffcb9e; outline-offset: 3px; }
  .hint {
    grid-column: 1 / -1;
    margin: 0;
    color: #91a8aa;
    font-size: 11px;
    line-height: 1.4;
  }
  @media (max-width: 600px) {
    .subtitle { max-width: 190px; }
    .panel { grid-template-columns: 1fr; gap: 13px; padding: 16px; }
    .buttons { width: 100%; }
    .buttons button { flex: 1; }
    .hint { grid-column: auto; }
  }
  @media (max-height: 480px) {
    .subtitle, .hint { display: none; }
    .panel { gap: 10px; padding: 12px 16px; }
    .top { top: 15px; }
  }
</style>
</head>
<body>
<main id="scene">
  <canvas id="canvas" aria-label="A person bracing against wind and rain with an umbrella"></canvas>

  <header class="top">
    <div>
      <p class="eyebrow">A little weather experiment</p>
      <h1>Against the weather</h1>
      <p class="subtitle">Hold on. The wind is picking up.</p>
    </div>
    <div class="readout">
      <p class="eyebrow">Wind speed</p>
      <div class="speed"><span id="speed">7.0</span> <span>m/s</span></div>
      <div class="condition" id="condition">Holding steady</div>
    </div>
  </header>

  <section class="panel" id="panel" aria-label="Weather controls">
    <div>
      <div class="slider-heading">
        <label for="wind">Wind strength</label>
        <span id="mode">Rising automatically</span>
      </div>
      <input id="wind" type="range" min="0" max="40" step="0.1" value="7">
      <div class="range-labels"><span>CALM · 0</span><span>GALE · 40 m/s</span></div>
    </div>
    <div class="buttons">
      <button id="auto" type="button" aria-pressed="true">Pause rise</button>
      <button id="reset" type="button">Reset scene</button>
    </div>
    <p class="hint">Move the slider to take control. Arrow keys adjust wind; space toggles the rise; R resets.</p>
  </section>
</main>

<script>
(() => {
  "use strict";

  const canvas = document.getElementById("canvas");
  const ctx = canvas.getContext("2d");
  const panel = document.getElementById("panel");
  const slider = document.getElementById("wind");
  const speedEl = document.getElementById("speed");
  const conditionEl = document.getElementById("condition");
  const modeEl = document.getElementById("mode");
  const autoButton = document.getElementById("auto");
  const resetButton = document.getElementById("reset");

  let width = 0, height = 0, scale = 1, ground = 0;
  let wind = 7, automatic = true, time = 0;
  let angle = 0, angularVelocity = 0;
  let inverted = false, inversion = 0, inversionVelocity = 0;
  let strain = 0, released = false;
  let freeX = 0, freeY = 0, freeVX = 0, freeVY = 0;
  let freeAngle = 0, freeSpin = 0;
  let lastTime = 0;
  const rain = Array.from({length: 150}, () => ({
    x: Math.random(), y: Math.random(),
    length: 8 + Math.random() * 13,
    depth: .4 + Math.random() * .6
  }));

  function resize() {
    const rect = canvas.getBoundingClientRect();
    const dpr = Math.min(window.devicePixelRatio || 1, 2);
    canvas.width = Math.round(rect.width * dpr);
    canvas.height = Math.round(rect.height * dpr);
    scale = Math.min(rect.width / 800, rect.height / 600);
    scale = Math.max(.25, scale);
    width = rect.width / scale;
    height = rect.height / scale;
    const panelTop = panel.getBoundingClientRect().top - rect.top;
    ground = Math.min(height - 30, (panelTop - 14) / scale);
    ctx.setTransform(dpr * scale, 0, 0, dpr * scale, 0, 0);
  }

  function setAuto(value) {
    automatic = value;
    autoButton.textContent = automatic ? "Pause rise" : "Resume rise";
    autoButton.setAttribute("aria-pressed", String(automatic));
    modeEl.textContent = automatic ? "Rising automatically" : "Manual control";
  }

  function reset() {
    wind = 7;
    time = 0;
    angle = 0;
    angularVelocity = 0;
    inverted = false;
    inversion = 0;
    inversionVelocity = 0;
    strain = 0;
    released = false;
    freeX = freeY = freeVX = freeVY = freeAngle = freeSpin = 0;
    slider.value = wind;
    setAuto(true);
  }

  slider.addEventListener("input", () => {
    wind = Number(slider.value);
    setAuto(false);
  });
  autoButton.addEventListener("click", () => setAuto(!automatic));
  resetButton.addEventListener("click", reset);
  window.addEventListener("resize", resize);
  window.addEventListener("keydown", event => {
    if (event.target === slider && (event.key === "ArrowLeft" || event.key === "ArrowRight" ||
        event.key === "ArrowUp" || event.key === "ArrowDown")) return;
    if (event.target.tagName === "BUTTON" && (event.key === " " || event.key === "Enter")) return;
    if (event.key === "ArrowRight" || event.key === "ArrowUp") {
      event.preventDefault();
      wind = Math.min(40, wind + 1);
      slider.value = wind;
      setAuto(false);
    } else if (event.key === "ArrowLeft" || event.key === "ArrowDown") {
      event.preventDefault();
      wind = Math.max(0, wind - 1);
      slider.value = wind;
      setAuto(false);
    } else if (event.key === " ") {
      event.preventDefault();
      setAuto(!automatic);
    } else if (event.key.toLowerCase() === "r") {
      reset();
    }
  });

  function personPose() {
    const x = width * .48;
    const load = released ? Math.min(wind / 40, 1) * .35 : Math.min(wind / 40, 1);
    const lean = load * 28;
    const hip = {x: x - lean * .25, y: ground - 75};
    const shoulder = {x: x - lean, y: ground - 139};
    const hand = {x: x + 35 - lean * .45, y: ground - 151 + load * 4};
    return {x, hip, shoulder, hand, load};
  }

  function umbrellaHub(pose) {
    return {
      x: pose.hand.x + Math.sin(angle) * 88,
      y: pose.hand.y - Math.cos(angle) * 88
    };
  }

  function update(dt) {
    time += dt;
    if (automatic) wind = Math.min(40, wind + .34 * dt);
    slider.value = wind.toFixed(1);

    const gust = Math.max(0, wind + Math.sin(time * 1.25) * wind * .035 +
      Math.sin(time * 2.8) * wind * .015);

    if (!released) {
      if (!inverted && gust > 22.5) inverted = true;
      if (inverted && gust < 12) inverted = false;

      const targetAngle = Math.min(1.1, (gust * gust / 1600) * 1.02 +
        (inverted ? .12 : 0));
      angularVelocity += ((targetAngle - angle) * 11 - angularVelocity * 5) * dt;
      angle += angularVelocity * dt;

      const targetInversion = inverted ? 1 : 0;
      inversionVelocity += ((targetInversion - inversion) * 32 - inversionVelocity * 8) * dt;
      inversion += inversionVelocity * dt;
      inversion = Math.max(-.05, Math.min(1.08, inversion));

      strain += Math.max(0, (gust - 30) / 9) * .48 * dt;
      if (gust < 29) strain = Math.max(0, strain - .35 * dt);
      if (strain >= 1) {
        const pose = personPose();
        const hub = umbrellaHub(pose);
        released = true;
        freeX = hub.x;
        freeY = hub.y;
        freeAngle = angle;
        freeVX = 65 + wind * 3.4;
        freeVY = -90;
        freeSpin = 1.8 + angularVelocity;
      }
    } else {
      freeVX += (wind * 10 - freeVX) * .45 * dt;
      freeVY += (110 - freeVY) * .25 * dt;
      freeX += freeVX * dt;
      freeY += freeVY * dt;
      freeSpin += (1.1 - freeSpin) * .35 * dt;
      freeAngle += freeSpin * dt;
      if (freeY > ground - 25) {
        freeY = ground - 25;
        freeVY = -Math.abs(freeVY) * .35;
        freeSpin *= .8;
      }
    }

    for (const drop of rain) {
      drop.x += (wind * 9 + 15) * drop.depth * dt / width;
      drop.y += (240 + wind * 2.5) * drop.depth * dt / height;
      if (drop.y > 1.04) {
        drop.y = -.04;
        drop.x = Math.random() * 1.2 - .2;
      }
      if (drop.x > 1.08) {
        drop.x = -.08;
        drop.y = Math.random();
      }
    }

    speedEl.textContent = wind.toFixed(1);
    conditionEl.textContent = released ? "Umbrella released" :
      strain > .45 ? "Grip slipping" :
      inverted ? "Inside out" :
      wind > 16 ? "Bracing" : "Holding steady";
  }

  function line(points, color, thickness) {
    ctx.beginPath();
    ctx.moveTo(points[0].x, points[0].y);
    for (let i = 1; i < points.length; i++) ctx.lineTo(points[i].x, points[i].y);
    ctx.strokeStyle = color;
    ctx.lineWidth = thickness;
    ctx.lineCap = "round";
    ctx.lineJoin = "round";
    ctx.stroke();
  }

  function circle(x, y, radius, color) {
    ctx.beginPath();
    ctx.arc(x, y, radius, 0, Math.PI * 2);
    ctx.fillStyle = color;
    ctx.fill();
  }

  function drawBackground() {
    const sky = ctx.createLinearGradient(0, 0, 0, height);
    sky.addColorStop(0, "#203746");
    sky.addColorStop(.65, "#405866");
    sky.addColorStop(1, "#263c42");
    ctx.fillStyle = sky;
    ctx.fillRect(0, 0, width, height);

    // A soft break in the clouds, behind the figure.
    const glow = ctx.createRadialGradient(width * .54, ground - 185, 5,
      width * .54, ground - 185, width * .48);
    glow.addColorStop(0, "rgba(162,185,180,.18)");
    glow.addColorStop(1, "rgba(162,185,180,0)");
    ctx.fillStyle = glow;
    ctx.fillRect(0, 0, width, height);

    ctx.fillStyle = "rgba(19,37,44,.22)";
    const horizon = ground - 65;
    ctx.beginPath();
    ctx.moveTo(0, ground);
    ctx.lineTo(0, horizon + 10);
    for (let x = 0; x <= width + 70; x += 70) {
      const h = 12 + (Math.sin(x * .021) + 1) * 12;
      ctx.lineTo(x, horizon - h);
      ctx.lineTo(x + 45, horizon - h);
      ctx.lineTo(x + 45, horizon + 5);
    }
    ctx.lineTo(width, ground);
    ctx.closePath();
    ctx.fill();

    ctx.fillStyle = "#263d40";
    ctx.fillRect(0, ground, width, height - ground);
    ctx.fillStyle = "rgba(181,207,195,.23)";
    ctx.fillRect(0, ground, width, 2);

    // Ground marks and small tufts.
    ctx.strokeStyle = "rgba(164,190,178,.18)";
    ctx.lineWidth = 1.5;
    for (let i = 0; i < 18; i++) {
      const x = ((i * 143 + 30) % (width + 100)) - 30;
      const y = ground + 13 + (i % 3) * 14;
      ctx.beginPath();
      ctx.moveTo(x, y);
      ctx.lineTo(x + 30 + (i % 4) * 8, y);
      ctx.stroke();
    }
  }

  function drawRain(front) {
    ctx.save();
    ctx.lineCap = "round";
    for (let i = 0; i < rain.length; i++) {
      const drop = rain[i];
      if ((i % 4 === 0) !== front) continue;
      const x = drop.x * width;
      const y = drop.y * height;
      const dy = drop.length * drop.depth;
      const dx = dy * (wind * 9 + 15) / (240 + wind * 2.5);
      ctx.strokeStyle = front ? "rgba(199,225,224,.29)" : "rgba(192,220,222,.17)";
      ctx.lineWidth = front ? 1.3 : .8;
      ctx.beginPath();
      ctx.moveTo(x, y);
      ctx.lineTo(x - dx, y - dy);
      ctx.stroke();
    }
    ctx.restore();
  }

  function drawWind() {
    ctx.save();
    ctx.strokeStyle = "rgba(208,226,220,.13)";
    ctx.lineWidth = 1.3;
    for (let i = 0; i < 8; i++) {
      const y = ground - 45 - i * 37;
      const x = ((time * (12 + wind * 2.2) + i * 161) % (width + 180)) - 100;
      const len = 32 + wind * 1.6 + (i % 3) * 13;
      ctx.beginPath();
      ctx.moveTo(x, y);
      ctx.quadraticCurveTo(x + len * .55, y - 5, x + len, y - 3);
      ctx.stroke();
    }
    ctx.restore();
  }

  function drawPerson(p) {
    const {x, hip, shoulder, hand, load} = p;
    const backFoot = {x: x - 42 - load * 12, y: ground - 4};
    const frontFoot = {x: x + 37 + load * 12, y: ground - 4};
    const backKnee = {x: x - 21 - load * 5, y: ground - 39};
    const frontKnee = {x: x + 25 + load * 6, y: ground - 39};

    // Back arm and legs.
    line([shoulder, {x: x - 34, y: ground - 111},
      {x: hand.x - 8, y: hand.y + 8}], "#263239", 11);
    line([hip, backKnee, backFoot], "#182b32", 18);
    line([hip, frontKnee, frontFoot], "#21343a", 18);
    line([{x: backFoot.x - 10, y: ground - 4},
      {x: backFoot.x + 9, y: ground - 4}], "#101e25", 9);
    line([{x: frontFoot.x - 8, y: ground - 4},
      {x: frontFoot.x + 14, y: ground - 4}], "#101e25", 9);

    // Raincoat, with a hem that pulls downwind.
    ctx.beginPath();
    ctx.moveTo(shoulder.x - 13, shoulder.y - 4);
    ctx.quadraticCurveTo(shoulder.x + 8, shoulder.y - 12, shoulder.x + 17, shoulder.y + 5);
    ctx.lineTo(hip.x + 19 + load * 10, hip.y + 14);
    ctx.quadraticCurveTo(hip.x, hip.y + 18, hip.x - 19, hip.y + 8);
    ctx.closePath();
    ctx.fillStyle = "#d49a6a";
    ctx.fill();
    line([{x: shoulder.x + 4, y: shoulder.y + 4},
      {x: hip.x + 5, y: hip.y + 8}], "rgba(81,60,49,.38)", 1.5);

    // Head and hood.
    circle(shoulder.x - 2, shoulder.y - 18, 15, "#c48c69");
    ctx.beginPath();
    ctx.arc(shoulder.x - 5, shoulder.y - 20, 16, Math.PI * .7, Math.PI * 1.9);
    ctx.lineTo(shoulder.x + 4, shoulder.y - 15);
    ctx.quadraticCurveTo(shoulder.x - 10, shoulder.y - 24, shoulder.x - 11, shoulder.y - 7);
    ctx.fillStyle = "#a66d50";
    ctx.fill();
    circle(shoulder.x + 9, shoulder.y - 20, 1.2, "#263239");

    // Front arm and hand meet the shaft at exactly the same point.
    const elbow = {x: shoulder.x + 23, y: shoulder.y + 21};
    line([shoulder, elbow, hand], "#bd835e", 12);
    circle(hand.x, hand.y, 5, "#e2b08a");
  }

  function drawUmbrella(hx, hy, theta, inv, flex, shaftStart) {
    const ax = Math.sin(theta), ay = -Math.cos(theta);
    const tx = Math.cos(theta), ty = Math.sin(theta);
    const rim = -12 * (1 - inv) + 52 * inv;
    const crown = 34 * (1 - inv) - 5 * inv;

    function point(u) {
      const along = crown * (1 - u * u) + rim * u * u +
        flex * 7 * u * (1 - u * u);
      return {
        x: hx + tx * u * 88 + ax * along,
        y: hy + ty * u * 88 + ay * along
      };
    }

    const bottomX = shaftStart ? shaftStart.x : hx - ax * 88;
    const bottomY = shaftStart ? shaftStart.y : hy - ay * 88;
    line([{x: bottomX, y: bottomY}, {x: hx + ax * 7, y: hy + ay * 7}],
      "#253039", 4);
    line([{x: bottomX, y: bottomY}, {x: bottomX - tx * 3, y: bottomY - ty * 3}],
      "#d8a76f", 5);

    ctx.beginPath();
    let p = point(-1);
    ctx.moveTo(p.x, p.y);
    for (let i = 1; i <= 48; i++) {
      p = point(-1 + i / 24);
      ctx.lineTo(p.x, p.y);
    }
    ctx.lineTo(hx, hy);
    ctx.closePath();
    ctx.fillStyle = "#d88261";
    ctx.fill();

    // Alternate fabric panels are visible in this deliberately flat side view.
    for (let section = 0; section < 4; section++) {
      const u0 = -1 + section * .5;
      const u1 = u0 + .5;
      if (section % 2 === 0) {
        ctx.beginPath();
        ctx.moveTo(hx, hy);
        p = point(u0);
        ctx.lineTo(p.x, p.y);
        for (let j = 1; j <= 12; j++) {
          p = point(u0 + (u1 - u0) * j / 12);
          ctx.lineTo(p.x, p.y);
        }
        ctx.closePath();
        ctx.fillStyle = "rgba(255,212,171,.17)";
        ctx.fill();
      }
    }

    for (const u of [-1, -.5, 0, .5, 1]) {
      p = point(u);
      line([{x: hx, y: hy}, p], "rgba(74,53,49,.66)", 1.5);
      if (Math.abs(u) === 1) circle(p.x, p.y, 2.2, "#e6bb98");
    }
    ctx.beginPath();
    p = point(-1);
    ctx.moveTo(p.x, p.y);
    for (let i = 1; i <= 48; i++) {
      p = point(-1 + i / 24);
      ctx.lineTo(p.x, p.y);
    }
    ctx.strokeStyle = "#f0b28b";
    ctx.lineWidth = 2;
    ctx.stroke();
    circle(hx, hy, 3, "#303a3b");
  }

  function render() {
    ctx.clearRect(0, 0, width, height);
    drawBackground();
    drawWind();
    drawRain(false);
    const pose = personPose();
    drawPerson(pose);
    if (released) {
      drawUmbrella(freeX, freeY, freeAngle, inversion, Math.min(wind / 40, 1), null);
    } else {
      const hub = umbrellaHub(pose);
      drawUmbrella(hub.x, hub.y, angle, inversion, Math.min(wind / 40, 1), pose.hand);
      circle(pose.hand.x, pose.hand.y, 4, "#e2b08a");
    }
    drawRain(true);
  }

  function frame(timestamp) {
    if (!lastTime) lastTime = timestamp;
    const elapsed = Math.min((timestamp - lastTime) / 1000, .05);
    lastTime = timestamp;
    // Small fixed-size steps keep the springs stable after a slow frame.
    const steps = Math.max(1, Math.ceil(elapsed / .016));
    for (let i = 0; i < steps; i++) update(elapsed / steps);
    render();
    requestAnimationFrame(frame);
  }

  resize();
  setAuto(true);
  requestAnimationFrame(frame);
})();
</script>
</body>
</html>

What it actually does

The umbrella bends, snaps inside out, and can tear free; lowering the wind before release lets it recover. The person leans and braces without sliding off the ground, and rain follows the wind.

It is a stylized side view, not a realistic fabric or fluid simulation. The ribs don’t buckle independently, the grip threshold is invented, and the released umbrella tumbles under a simple wind-and-gravity approximation rather than flying like a real one.

Attachments

openai/gpt-6.1-terra-pro — page