Question about workflow with services about polygon_coverage_planning HOT 1 CLOSED

#!/usr/bin/env python

import rospy
from geometry_msgs.msg import Point32
from polygon_coverage_msgs.srv import PolygonService
from polygon_coverage_msgs.msg import PolygonWithHolesStamped

if __name__ == '__main__':
    rospy.init_node('polygon_setter')
    rospy.wait_for_service('/coverage_planner/set_polygon')
    try:
        set_poly_srv = rospy.ServiceProxy('/coverage_planner/set_polygon', PolygonService)
        poly = PolygonWithHolesStamped()
        poly.header.stamp = rospy.Time.now()
        poly.header.frame_id="map"
        poly.polygon.hull.points = [Point32(-29.5515, 31.0672, 1.0), # Fix polygon altitude greater than 0.0
                                    Point32(-17.7991, 99.7963, 0.0),
                                    Point32(-40.5039, 80.0898, 0.0),
                                    Point32(-51.1835, 51.8711, 0.0)]
        resp = set_poly_srv(poly)
        print resp.success
    except rospy.ServiceException as e:
        print("Service call failed: %s"%e)