Program Listing for File savitzky_golay_smoother.hpp

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// Copyright (c) 2022, Samsung Research America
//
// 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. Reserved.

#ifndef NAV2_SMOOTHER__SAVITZKY_GOLAY_SMOOTHER_HPP_
#define NAV2_SMOOTHER__SAVITZKY_GOLAY_SMOOTHER_HPP_

#include <cmath>
#include <vector>
#include <string>
#include <iostream>
#include <memory>
#include <queue>
#include <utility>

#include "nav2_core/smoother.hpp"
#include "nav2_smoother/smoother_utils.hpp"
#include "nav2_costmap_2d/costmap_2d.hpp"
#include "nav2_costmap_2d/cost_values.hpp"
#include "nav2_util/geometry_utils.hpp"
#include "nav2_util/node_utils.hpp"
#include "nav_msgs/msg/path.hpp"
#include "angles/angles.h"
#include "tf2/utils.h"

namespace nav2_smoother
{

class SavitzkyGolaySmoother : public nav2_core::Smoother
{
public:
  SavitzkyGolaySmoother() = default;

  ~SavitzkyGolaySmoother() override = default;

  void configure(
    const rclcpp_lifecycle::LifecycleNode::WeakPtr &,
    std::string name, std::shared_ptr<tf2_ros::Buffer>,
    std::shared_ptr<nav2_costmap_2d::CostmapSubscriber>,
    std::shared_ptr<nav2_costmap_2d::FootprintSubscriber>) override;

  void cleanup() override {}

  void activate() override {}

  void deactivate() override {}

  bool smooth(
    nav_msgs::msg::Path & path,
    const rclcpp::Duration & max_time) override;

protected:
  bool smoothImpl(
    nav_msgs::msg::Path & path,
    bool & reversing_segment);

  bool do_refinement_;
  int refinement_num_;
  rclcpp::Logger logger_{rclcpp::get_logger("SGSmoother")};
};

}  // namespace nav2_smoother

#endif  // NAV2_SMOOTHER__SAVITZKY_GOLAY_SMOOTHER_HPP_