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Alfombra redonda

by fogonCC03768 blocks
Alfombra redondaDrag to turn it
// «Alfombra redonda» · gpt-6-sol (medium)
// A big round rug lying flat on the floor, 2-3 blocks thick: concentric rings of color (terracotta, cream, mustard, teal) with a little geometric zig-zag border and short fringe tufts around the edge.

const cx = 24, cy = 24;
const R = 19;

const colors = {
  terracotta: ["#c97860", "#d9886d", "#e3977b"],
  cream:      ["#eee0bb", "#f6e9ca", "#fff0d5"],
  mustard:    ["#caa042", "#dbb452", "#e7bf61"],
  teal:       ["#4c9691", "#60aaa3", "#73b9af"]
};

function shade(name, top) {
  const palette = colors[name];
  if (!top) return palette[0];
  return rand() < 0.11 ? palette[2] : palette[1];
}

// Solid, softly rounded woven body.
for (let x = cx - R; x <= cx + R; x++) {
  for (let y = cy - R; y <= cy + R; y++) {
    const dx = x - cx, dy = y - cy;
    const r = Math.hypot(dx, dy);
    if (r > R + 0.15) continue;

    let band;
    if (r < 4.1) band = "mustard";
    else if (r < 6.1) band = "cream";
    else if (r < 9.2) band = "terracotta";
    else if (r < 11.3) band = "mustard";
    else if (r < 13.5) band = "cream";
    else if (r < 17.5) band = "teal";
    else band = "terracotta";

    set(x, y, 0, shade(band, false));
    set(x, y, 1, shade(band, false));
    set(x, y, 2, shade(band, true));

    // Continuous cream zigzag woven into the wide teal border.
    if (r >= 14.1 && r < 17.4) {
      const angle = Math.atan2(dy, dx);
      const phase = ((angle / (Math.PI * 2) * 20) % 1 + 1) % 1;
      const zig = 2 * Math.abs(phase - 0.5);
      const path = 14.75 + zig * 1.85;
      if (Math.abs(r - path) < 0.58) {
        set(x, y, 2, rand() < 0.12 ? "#fff0d5" : "#f3e5c3");
      }
    }

    // Tiny, regularly spaced stitches inside the terracotta ring.
    if (r > 7.4 && r < 8.35) {
      const angle = Math.atan2(dy, dx);
      const phase = ((angle / (Math.PI * 2) * 28) % 1 + 1) % 1;
      if (phase < 0.31) set(x, y, 2, "#f3d5a3");
    }

    // A small central diamond, legible from above.
    const diamond = Math.abs(dx) + Math.abs(dy);
    if (diamond <= 2) set(x, y, 2, "#e9d8ad");
    if (diamond <= 1) set(x, y, 2, "#ca795f");
  }
}

// Short, separated yarn tufts all the way around the edge.
for (let i = 0; i < 72; i++) {
  const angle = i * Math.PI * 2 / 72;
  const length = 1.7 + (i % 4 === 0 ? 0.8 : i % 3 === 0 ? 0.4 : 0);
  const color = i % 5 === 0 ? "#e4cca5" : i % 3 === 0 ? "#fff0d3" : "#f2dfb8";

  for (let d = 18.9; d <= 19.2 + length; d += 0.3) {
    const x = Math.round(cx + Math.cos(angle) * d);
    const y = Math.round(cy + Math.sin(angle) * d);
    set(x, y, 0, color);
    if (d < 20.15) set(x, y, 1, color);
  }
}