annotationsVertices (annotations) {
    let start = annotations[0].boundingBox.vertices
    let end = annotations[annotations.length - 1].boundingBox.vertices

    return [ start[0], end[1], end[2], start[3] ]
  }
/**
   *
   * extract cornes from an array of annotations with element having boundBox.vertices prop
   *
   */
extract cornes from an array of annotations with element having boundBox.vertices prop
extract cornes from an array of annotations with element having boundBox . vertices prop
annotationsVertices (annotations) {
    let start = annotations[0].boundingBox.vertices
    let end = annotations[annotations.length - 1].boundingBox.vertices
    return [ start[0], end[1], end[2], start[3] ]
  }
annotationsVertices ( annotations ) { let start = annotations [ 0 ] . boundingBox . vertices let end = annotations [ annotations . length - 1 ] . boundingBox . vertices return [ start [ 0 ] , end [ 1 ] , end [ 2 ] , start [ 3 ] ] }
extract cornes from an array of annotations with element having boundBox.vertices prop
extract cornes from an array of annotations with element having boundBox . vertices prop