ros moveit中点云转环境scene的Python接口
时间: 2024-03-05 18:47:38 浏览: 187
在ROS MoveIt中,可以使用Python接口将点云数据转换为环境场景,并使用MoveIt提供的避障功能进行避障。具体的Python代码如下:
```python
import rospy
from sensor_msgs.msg import PointCloud2
from moveit_msgs.msg import CollisionObject
from moveit_msgs.srv import ApplyPlanningScene
from shape_msgs.msg import SolidPrimitive
from geometry_msgs.msg import Pose
def pointcloud_to_collision_object(pointcloud_msg):
# 将PointCloud2消息转换为pcl::PointCloud类型的数据
# 然后将其转换为moveit_msgs::CollisionObject消息类型
collision_object = CollisionObject()
collision_object.header.frame_id = pointcloud_msg.header.frame_id
collision_object.id = "pointcloud"
primitive = SolidPrimitive()
primitive.type = SolidPrimitive.BOX
primitive.dimensions = [0.1, 0.1, 0.1]
pose = Pose()
pose.orientation.w = 1.0
collision_object.primitives.append(primitive)
collision_object.primitive_poses.append(pose)
return collision_object
def update_planning_scene(collision_object):
# 将CollisionObject消息发布到/planning_scene中,更新当前的环境场景
rospy.wait_for_service("/apply_planning_scene")
try:
apply_planning_scene = rospy.ServiceProxy("/apply_planning_scene", ApplyPlanningScene)
request = ApplyPlanningSceneRequest()
request.scene.is_diff = True
request.scene.world.collision_objects.append(collision_object)
response = apply_planning_scene(request)
except rospy.ServiceException as e:
rospy.logerr("Failed to update planning scene: {}".format(str(e)))
if __name__ == "__main__":
rospy.init_node("pointcloud_to_collision_object")
# 订阅PointCloud2消息
rospy.Subscriber("/pointcloud_topic", PointCloud2, lambda msg: update_planning_scene(pointcloud_to_collision_object(msg)))
rospy.spin()
```
在上述代码中,首先定义了一个函数pointcloud_to_collision_object,用于将PointCloud2消息转换为moveit_msgs::CollisionObject类型的数据。然后定义了一个函数update_planning_scene,用于将CollisionObject消息发布到/planning_scene中,更新当前的环境场景。
在主程序中,首先初始化节点并订阅PointCloud2消息。当接收到PointCloud2消息时,会调用update_planning_scene函数将CollisionObject消息发布到/planning_scene中,更新当前的环境场景。最后使用rospy.spin()函数进入循环,等待消息的到来。
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