Contact
This is a ROS message definition.
Source
ros_gz_interfaces/Entity collision1 # Contact collision1
ros_gz_interfaces/Entity collision2 # Contact collision2
geometry_msgs/Vector3[] positions # List of contact position
geometry_msgs/Vector3[] normals # List of contact normals
float64[] depths # List of penetration depths
ros_gz_interfaces/JointWrench[] wrenches # List of joint wrenches including forces/torques