paths.hpp

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/*********************************************************************
*  Copyright (c) 2017 - for information on the respective copyright
*  owner see the NOTICE file and/or the repository
*
*      https://github.com/hbanzhaf/steering_functions.git
*
*  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.
 
*  This source code is derived from Continuous Curvature (CC) Steer.
*  Copyright (c) 2016, Thierry Fraichard and Institut national de
*  recherche en informatique et en automatique (Inria), licensed under
*  the BSD license, cf. 3rd-party-licenses.txt file in the root
*  directory of this source tree.
**********************************************************************/
 
#ifndef PATHS_HPP
#define PATHS_HPP
 
#include <numeric>
#include <vector>
 
#include "steering_functions/hc_cc_state_space/configuration.hpp"
#include "steering_functions/hc_cc_state_space/hc_cc_circle.hpp"
#include "steering_functions/steering_functions.hpp"
 
namespace steering
{
 
class Path
{
public:
  Path(const Configuration &_start, const Configuration &_end, double _kappa, double _sigma, double _length);
 
  Configuration start, end;
 
  double kappa, sigma;
 
  double length;
};
 
namespace cc_dubins
{
enum path_type
{
  E,
  S,
  T,
  TT,
  // Dubins families:
  TST,
  TTT,
  // #####################
  TTTT
};
}
const int nb_cc_dubins_paths = 7;
 
class CC_Dubins_Path : public Path
{
public:
  CC_Dubins_Path(const Configuration &_start, const Configuration &_end, cc_dubins::path_type _type, double _kappa,
                 double _sigma, Configuration *_qi1, Configuration *_qi2, Configuration *_qi3, Configuration *_qi4,
                 HC_CC_Circle *_cstart, HC_CC_Circle *_cend, HC_CC_Circle *_ci1, HC_CC_Circle *_ci2, double _length);
 
  ~CC_Dubins_Path();
 
  void print(bool eol) const;
 
  cc_dubins::path_type type;
 
  Configuration *qi1, *qi2, *qi3, *qi4;
 
  HC_CC_Circle *cstart, *cend, *ci1, *ci2;
};
 
namespace hc_cc_rs
{
enum path_type
{
  E,
  S,
  T,
  TT,
  TcT,
  // Reeds-Shepp families:
  TcTcT,
  TcTT,
  TTcT,
  TST,
  TSTcT,
  TcTST,
  TcTSTcT,
  TTcTT,
  TcTTcT,
  // #####################
  TTT,
  TcST,
  TScT,
  TcScT
};
}
const int nb_hc_cc_rs_paths = 18;
 
class HC_CC_RS_Path : public Path
{
public:
  HC_CC_RS_Path(const Configuration &_start, const Configuration &_end, hc_cc_rs::path_type _type, double _kappa,
                double _sigma, Configuration *_qi1, Configuration *_qi2, Configuration *_qi3, Configuration *_qi4,
                HC_CC_Circle *_cstart, HC_CC_Circle *_cend, HC_CC_Circle *_ci1, HC_CC_Circle *_ci2, double _length);
 
  ~HC_CC_RS_Path();
 
  void print(bool eol) const;
 
  hc_cc_rs::path_type type;
 
  Configuration *qi1, *qi2, *qi3, *qi4;
 
  HC_CC_Circle *cstart, *cend, *ci1, *ci2;
};
 
bool state_equal(const State &state1, const State &state2);
 
void reverse_control(Control &control);
 
Control subtract_control(const Control &control1, const Control &control2);
 
void empty_controls(std::vector<Control> &controls);
 
void straight_controls(const Configuration &q1, const Configuration &q2, std::vector<Control> &controls);
 
void rs_turn_controls(const HC_CC_Circle &c, const Configuration &q, bool order, std::vector<Control> &controls);
 
void hc_turn_controls(const HC_CC_Circle &c, const Configuration &q, bool order, std::vector<Control> &controls);
 
bool cc_elementary_controls(const HC_CC_Circle &c, const Configuration &q, double delta, bool order,
                            std::vector<Control> &controls);
 
void cc_default_controls(const HC_CC_Circle &c, const Configuration &q, double delta, bool order,
                         std::vector<Control> &controls);
 
void cc_turn_controls(const HC_CC_Circle &c, const Configuration &q, bool order, std::vector<Control> &controls);
 
} // namespace steering
 
#endif