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Obelisco egipcio

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Obelisco egipcioArrastrá para girarlo
// «Obelisco egipcio» · gpt-6-sol (medium)
// A tall slender Egyptian obelisk of pinkish-red granite on a square stepped base, with a small pointed gold pyramid tip and columns of carved hieroglyph symbols (darker red) on each face.

const sandstone = ["#c9975e", "#d9a96d", "#e6b87a"];
const granite = ["#a94f52", "#bd6565", "#cb7773", "#d78b7d"];
const carved = "#78343d";
const carvedLight = "#91444a";
const gold = ["#b88329", "#e4af3b", "#ffd05a", "#ffe18a"];

function stoneBox(x0, y0, z0, x1, y1, z1, palette) {
  for (let z = z0; z <= z1; z++)
    for (let y = y0; y <= y1; y++)
      for (let x = x0; x <= x1; x++) {
        let shade = z === z1 ? 2 : (x === x0 || y === y1 ? 0 : 1);
        if (rand() < 0.12) shade = Math.floor(rand() * palette.length);
        set(x, y, z, palette[shade]);
      }
}

// Broad, friendly sandstone plinth with two receding steps.
stoneBox(11, 11, 0, 36, 36, 2, sandstone);
stoneBox(13, 13, 3, 34, 34, 5, sandstone);
stoneBox(16, 16, 6, 31, 31, 9, granite);

function rim(lo, hi, z, color) {
  for (let p = lo; p <= hi; p++) {
    set(p, lo, z, color); set(p, hi, z, color);
    set(lo, p, z, color); set(hi, p, z, color);
  }
}
rim(11, 36, 1, "#a97848");
rim(11, 36, 2, "#efc383");
rim(13, 34, 4, "#b88652");
rim(13, 34, 5, "#f0c684");
rim(16, 31, 7, "#8f4648");
rim(16, 31, 9, "#e5a083");

// Turquoise and lapis inlays on all four sides of the stepped base.
for (const p of [18, 23, 28]) {
  for (const side of [13, 34]) {
    set(p, side, 4, "#276e83");
    set(p + 1, side, 4, "#58c6bb");
  }
  for (const side of [13, 34]) {
    set(side, p, 4, "#276e83");
    set(side, p + 1, 4, "#58c6bb");
  }
}

// The solid granite shaft narrows in chunky, deliberate stages.
function bounds(z) {
  const half = 6 - Math.min(3, Math.floor((z - 10) / 9));
  return [24 - half, 23 + half];
}
for (let z = 10; z <= 39; z++) {
  const [lo, hi] = bounds(z);
  for (let y = lo; y <= hi; y++)
    for (let x = lo; x <= hi; x++) {
      let shade = 1;
      if (x === lo || y === hi) shade = 0;
      if (y === lo || z === 39) shade = 2;
      if (rand() < 0.11) shade = Math.floor(rand() * 4);
      set(x, y, z, granite[shade]);
    }
}

// Each bitmap is a different large, deeply cut hieroglyph.
const glyphs = [
  ["0110", "1001", "1111", "0110"], // eye
  ["0110", "1001", "0110", "0110"], // ankh
  ["1001", "1110", "0111", "0100"], // bird
  ["1100", "0110", "0011", "0110"], // water
  ["0010", "1111", "0010", "0111"], // reed
  ["0110", "1111", "1111", "0110"]  // sun
];
const heights = [12, 17, 22, 27, 32, 36];

for (let g = 0; g < glyphs.length; g++) {
  for (let row = 0; row < 4; row++) {
    const z = heights[g] + 3 - row;
    const [lo, hi] = bounds(z);
    for (let col = 0; col < 4; col++) {
      if (glyphs[g][row][col] !== "1") continue;
      const ink = (row === 0 && col % 2 === 0) ? carvedLight : carved;
      const p = 22 + col;
      set(p, lo, z, ink); // front
      set(p, hi, z, ink); // back
      set(lo, p, z, ink); // left
      set(hi, p, z, ink); // right
    }
  }
}

// Gold collar and stepped pointed pyramidion.
stoneBox(20, 20, 40, 27, 27, 40, gold);
rim(20, 27, 40, "#ffe18a");
for (let z = 41; z <= 45; z++) {
  const inset = z <= 42 ? 21 : z <= 44 ? 22 : 23;
  const far = 47 - inset;
  for (let y = inset; y <= far; y++)
    for (let x = inset; x <= far; x++)
      set(x, y, z, x === inset ? gold[0] : y === inset ? gold[3] : gold[2]);
}