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Resorte

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ResorteArrastrá para girarlo
// «Resorte» · gpt-6-sol (medium)
// A bouncy spring pad: a square dark grey metal base 24x24, 4 tall, centered; on it a chunky coiled spring of light silver steel (a helix of radius 9, 3 thick, 4 turns, about 14 tall), topped by a round red pad radius 11, 3 thick with a lighter top and a white arrow pointing up.

// 24 × 24 dark metal base
box(12, 12, 0, 35, 35, 3, "#343b45");
box(13, 13, 3, 34, 34, 3, "#535c68");
box(15, 15, 3, 32, 32, 3, "#68727e");

for (const x of [15, 32]) {
  for (const y of [15, 32]) {
    box(x, y, 4, x + 1, y + 1, 4, "#aeb8c1");
    set(x, y, 4, "#e1e7e9");
  }
}

// The spring, its mount, and the pad bounce together.
part("resorte", [24, 24, 4]);

cylinder(24, 24, 4, 5, 2, "#78838d");
cylinder(24, 24, 5, 4, 1, "#c8d1d6");

// Four chunky, closely spaced turns of silver steel.
const steps = 320;
for (let i = 0; i < steps; i++) {
  const a0 = i / steps * Math.PI * 8;
  const a1 = (i + 1) / steps * Math.PI * 8;
  const x0 = 24 + 9 * Math.cos(a0), y0 = 24 + 9 * Math.sin(a0);
  const x1 = 24 + 9 * Math.cos(a1), y1 = 24 + 9 * Math.sin(a1);
  const z0 = 5.5 + 13 * i / steps;
  const z1 = 5.5 + 13 * (i + 1) / steps;
  line(x0, y0, z0, x1, y1, z1, 1.65, "#82909b");
  line(x0 - 0.35, y0 - 0.35, z0 + 0.35,
       x1 - 0.35, y1 - 0.35, z1 + 0.35, 1.05, "#d6e0e4");
  line(x0 - 0.55, y0 - 0.55, z0 + 0.65,
       x1 - 0.55, y1 - 0.55, z1 + 0.65, 0.35, "#f2f6f5");
}

// Three-block-thick red circular cap.
for (let x = 13; x <= 35; x++) {
  for (let y = 13; y <= 35; y++) {
    const d = Math.hypot(x - 24, y - 24);
    if (d > 11) continue;
    set(x, y, 19, "#a82736");
    set(x, y, 20, d > 10 ? "#c82e3c" : "#e23a48");
    set(x, y, 21, d > 9.7 ? "#de3946" : "#fb6268");
  }
}

// Bold white upward arrow on the top surface.
for (let y = 17; y <= 28; y++) {
  for (let x = 23; x <= 24; x++) set(x, y, 21, "#fffaf0");
}
for (let y = 26; y <= 32; y++) {
  const halfWidth = Math.floor((32 - y) * 0.92);
  for (let x = 24 - halfWidth; x <= 24 + halfWidth; x++) {
    set(x, y, 21, "#fffaf0");
  }
}

animate("resorte", { type: "bob", axis: "z", amplitude: 2.5, speed: 5 });