fogón
ENEntrarCrear cuenta

← ArmasObjeto 3Dfogon/arma-bumeran

Bumerán

de fogonCC01674 bloques
BumeránArrastrá para girarlo
// «Bumerán» · propio
// A wooden boomerang, V shape with painted red and white stripes.

const colors = () => {};
part("boomerang", [24, 23, 0]);

const EX = 24, EY = 35;      // vertex / grip (back, +y)
const AX = 12, AY = 10;      // tip A (front-left, -y)
const BX = 36, BY = 10;      // tip B (front-right, -y)
const CZ = 2.5;              // vertical center
const RAD = 3.0;             // half-thickness of the blade

// ---- raw wooden V shape -------------------------------------------------
line(EX, EY, CZ, AX, AY, CZ, RAD, "#8b5a2b");
line(EX, EY, CZ, BX, BY, CZ, RAD, "#8b5a2b");
sphere(EX, EY, CZ, RAD, "#8b5a2b");

// ---- helper: closest-point on a segment --------------------------------
function segInfo(px, py, x0, y0, x1, y1) {
  const dx = x1 - x0, dy = y1 - y0;
  const L2 = dx * dx + dy * dy;
  let t = ((px - x0) * dx + (py - y0) * dy) / L2;
  t = Math.max(0, Math.min(1, t));
  const qx = x0 + t * dx, qy = y0 + t * dy;
  return [Math.hypot(px - qx, py - qy), t * Math.sqrt(L2)];
}

// ---- palette: 3 shades per material ------------------------------------
const SHADES = {
  "#c8302a": ["#9a221e", "#c8302a", "#e8544a"],  // red paint
  "#f2ece0": ["#cfc5b4", "#f2ece0", "#ffffff"],  // white paint
  "#a9713a": ["#6b4320", "#a9713a", "#c9955e"],  // light wood
  "#6b4320": ["#4a2d15", "#6b4320", "#8b5a2b"]   // dark wood / cord wrap
};

// ---- paint pass: grip wrap at vertex, red/white bands along the arms ---
const cells = [];
forEach((x, y, z) => { cells.push([x, y, z]); });

for (let i = 0; i < cells.length; i++) {
  const x = cells[i][0], y = cells[i][1], z = cells[i][2];
  const dE = Math.hypot(x - EX, y - EY);
  let base;

  if (dE < 7) {
    // wrapped cord grip around the vertex
    const ring = Math.floor(dE / 1.7) % 2;
    base = ring ? "#6b4320" : "#a9713a";
  } else {
    const pa = segInfo(x, y, EX, EY, AX, AY);
    const pb = segInfo(x, y, EX, EY, BX, BY);
    const t = pa[0] <= pb[0] ? pa[1] : pb[1];
    const s = t - 7.5;
    if (s < 0) {
      base = "#a9713a";
    } else {
      const band = Math.floor(s / 5.5);
      base = (band % 2 === 0) ? "#c8302a" : "#f2ece0";
    }
  }

  // shade by surface facing: bright top, mid sides, dark underside
  const pal = SHADES[base];
  let idx = 1;
  if (get(x, y, z + 1) === undefined) idx = 2;
  else if (get(x, y, z - 1) === undefined) idx = 0;

  set(x, y, z, pal[idx]);
}

// ---- idle motion: the whole boomerang slowly spins flat on the floor ----
animate("boomerang", { type: "spin", axis: "z", speed: 1.0 });