Function getOffsets

src/utils.js:90–106

(length, tileSize, cameraOffset, order)

}

const getOffsets = (length, tileSize, cameraOffset, order) => {
  const siblingCount = (length - tileSize) / tileSize

  // Do not add offset for very small fraction of tile
  if (Math.abs(siblingCount) < 0.001) {
    return [0, 0]
  }

  const prev = siblingCount / 2 + 0.5 - cameraOffset
  const next = siblingCount - prev

  let result = [-1 * Math.ceil(prev), Math.ceil(next)]
  if (order === -1) {
    result = [-1 * Math.ceil(next), Math.ceil(prev)]
  }
  return result
}

const getTileOffsets = (length, tileSize, camera, order) => {
  const cameraOffset = camera - Math.floor(camera)