Function normalizeRows

src/ink/layoutDamageRows.ts:8–21

(
  y: number,
  height: number,
)

}

function normalizeRows(
  y: number,
  height: number,
): LayoutDamageRows | null {
  if (!Number.isFinite(y) || !Number.isFinite(height) || height <= 0) {
    return null
  }
  const top = Math.floor(y)
  const bottom = Math.ceil(y + height)
  if (!Number.isFinite(top) || !Number.isFinite(bottom) || bottom <= top) {
    return null
  }
  return { y: top, height: bottom - top }
}

export function addLayoutDamageRows(
  current: LayoutDamageRows | null,