HarmonyOS 轨迹线样式和预期不符

let polylineOption: mapCommon.MapPolylineOptions = { 
  points: [{ latitude:  40.053654572784, longitude: 116.6087993198 }, { 
    latitude: 37.774167, 
    longitude:   112.351667 
  }, { latitude: 34.110639, longitude: 108.501972 }, { latitude: 30.572336934036, longitude: 103.95407937635} 
  ], 
  clickable: true, 
  color: 0xff000000, 
  colors: [0xB2757575,0xF0417CFF,0xB2757575,0xB2757575], 
  startCap: 4, 
  endCap: mapCommon.CapStyle.BUTT, 
  geodesic: false, 
  jointType: mapCommon.JointType.DEFAULT, 
  patterns: [{ type: 0 },{ type: 0 },{ type: 1 },{ type: 1 }], 
  visible: true, 
  width: 10, 
  zIndex: 0, 
  gradient: false 
}