code: function translateLine (options, line) {
    const { x, y } = Object.assign({ x: 0, y: 0 }, options || {})
    let segments = line.segments
    let segment = null
    let point = null
    for (let i = 0, il = segments.length; i < il; i++) {
      segment = segments[i]
      for (let j = 0, jl = segment.length; j < jl; j++) {
        point = segment[j]
        segment[j] = [point[0] + x, point[1] + y]
      }
    }
    return line
  }
docs: translate text line