Function cellKey

js/main.js:3735–3735

(ix, iy, iz)

    const frac = totalArea[id] > 0 ? maskedArea[id] / totalArea[id] : 0;
    if (frac > 0 && frac < 1) {
      boundaryPositions.push([idPosX[id], idPosY[id], idPosZ[id], userMaskArea[id] > 0 ? 0 : 1]);
    }
  }