ros noetic moveit 将点云话题通过pcl进行三角化后转换为moveit场景scene的Python函数
时间: 2024-04-24 07:21:54 浏览: 166
以下是一个将点云话题通过PCL进行三角化后转换为MoveIt场景的Python函数示例:
``` python
import rospy
import moveit_commander
import pcl
from_msgs.msg import PointCloud2
from moveit_msgs.msg import CollisionObject, PlanningScene
def add_pointcloud_to_planning_scene(pointcloud_topic):
# 初始化MoveIt Commander
moveit_commander.roscpp_initialize(sys.argv)
# 创建PlanningSceneInterface对象
planning_scene_interface = moveit_commander.PlanningSceneInterface()
# 订阅点云话题
pointcloud_subscriber = rospy.Subscriber(pointcloud_topic, PointCloud2, pointcloud_callback)
# 等待收到点云消息
rospy.wait_for_message(pointcloud_topic, PointCloud2)
# 创建PlanningScene消息
planning_scene = PlanningScene()
# 将点云话题中的点云转换为PCL点云数据
pcl_cloud = pcl.PointCloud.PointXYZ()
pcl.fromROSMsg(pointcloud_msg, pcl_cloud)
# 对PCL点云进行三角化
polygons = pcl_cloud.make_ConcaveHull()
# 将三角化后的多边形转换为MoveIt的CollisionObject
collision_object = CollisionObject()
collision_object.header.frame_id = pointcloud_msg.header.frame_id
collision_object.id = pointcloud_topic + "_collision_object"
for polygon in polygons:
polygon_mesh = pcl.MeshPolygon()
for index in polygon:
polygon_mesh.vertices.append(pcl_cloud[index])
collision_object.meshes.append(polygon_mesh)
collision_object.mesh_poses.append(pointcloud_msg.pose)
# 将CollisionObject添加到PlanningScene
planning_scene.world.collision_objects.append(collision_object)
planning_scene.is_diff = True
planning_scene_interface.applyPlanningScene(planning_scene)
# 清除订阅者
pointcloud_subscriber.unregister()
# 关闭MoveIt Commander
moveit_commander.roscpp_shutdown()
```
此函数将订阅给定的点云话题并等待收到消息。一旦收到消息,它将使用PCL对点云进行三角化,并将三角化后的多边形转换为MoveIt的CollisionObject。最后,将CollisionObject添加到PlanningScene中,以便在规划运动时考虑它。
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