ppovb5fc7/gazebo/plugins/TouchPlugin.hh

111 lines
3.8 KiB
C++

/*
* Copyright (C) 2017 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifndef GAZEBO_PLUGINS_TOUCHPLUGIN_HH_
#define GAZEBO_PLUGINS_TOUCHPLUGIN_HH_
#include <string>
#include <vector>
#include <gazebo/common/Events.hh>
#include <gazebo/common/Plugin.hh>
#include <gazebo/sensors/ContactSensor.hh>
#include <gazebo/transport/Node.hh>
#include <sdf/sdf.hh>
namespace gazebo
{
/// \brief Plugin which checks if this model has touched some specific target
/// for a given time continuously and exclusively. After the touch is
/// completed, the plugin is disabled. It can be re-enabled through a Gazebo
/// transport topic.
///
/// It requires that contact sensors be placed in at least one link on this
/// model.
///
/// Parameters:
///
/// <sensor> Name of contact sensor attached to one of this model's links.
/// There can be multiple sensor elements in case many links are
/// checked.
///
/// <target> Scoped name of collision which we want to be touching. This can
/// be a substring of the desired collision name so we match more
/// than one collision. For example, using the name of a model will
/// match all its collisions.
///
/// <time> Target time in seconds to maintain contact.
///
/// <namespace> Namespace for transport topics:
/// /<namespace>/enable : Topic used to enable and disable the
/// plugin.
/// /<namespace>/touched : Topic where a message is published once
/// the touch is complete.
///
/// <enabled> Set this to true so the plugin works from the start and doesn't
/// need to be enabled.
///
class GAZEBO_VISIBLE TouchPlugin : public ModelPlugin
{
/// \brief Constructor
public: TouchPlugin();
// Documentation inherited
public: virtual void Load(physics::ModelPtr _model, sdf::ElementPtr _sdf);
/// \brief Callback for enable "service".
/// \param[in] _msg Message with 0 to disable and 1 to enable the plugin.
public: void Enable(ConstIntPtr &_msg);
/// \brief Update plugin's function.
/// \_param[in] _info Information about world.
private: void OnUpdate(const common::UpdateInfo &_info);
/// \brief Contact sensors attached to links in the model
private: std::vector<sensors::ContactSensorPtr> contactSensors;
/// \brief Name of this model, to be used to check collisions against
private: std::string modelName;
/// \brief Target collisions which this model should be touching. This can
/// be a substring shared by several collisions.
private: std::string target;
/// \brief Namespace for transport topics.
private: std::string ns;
/// \brief Target time to continuously touch.
private: common::Time targetTime = 5;
/// \brief Time when started touching.
private: common::Time touchStart;
/// \brief Gazebo transport node for communication.
private: transport::NodePtr gzNode;
/// \brief Publisher which publishes a message after touched for enough time
private: transport::PublisherPtr touchedPub;
/// \brief Subscriber to enable messages.
private: transport::SubscriberPtr enableSub;
/// \brief Connection to World Update events.
private: event::ConnectionPtr updateConnection;
};
}
#endif