angle.h

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/*
 * LibrePCB - Professional EDA for everyone!
 * Copyright (C) 2013 LibrePCB Developers, see AUTHORS.md for contributors.
 * https://librepcb.org/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef LIBREPCB_ANGLE_H
#define LIBREPCB_ANGLE_H

/*******************************************************************************
 *  Includes
 ******************************************************************************/
#include "../fileio/sexpression.h"

#include <QtCore>

/*******************************************************************************
 *  Namespace / Forward Declarations
 ******************************************************************************/
namespace librepcb {

/*******************************************************************************
 *  Class Angle
 ******************************************************************************/

class Angle {
  Q_DECLARE_TR_FUNCTIONS(Angle)

public:
  // Constructors / Destructor

  Angle() noexcept : Angle(0) {}

  Angle(const Angle& angle) noexcept : mMicrodegrees(angle.mMicrodegrees) {}

  explicit Angle(qint32 microdegrees) noexcept
    : mMicrodegrees(microdegrees % 360000000) {}

  ~Angle() noexcept {}

  // Setters

  void setAngleMicroDeg(qint32 microdegrees) noexcept {
    mMicrodegrees = microdegrees % 360000000;
  }

  void setAngleDeg(qreal degrees) noexcept {
    mMicrodegrees = fmod(degrees * 1e6, 360e6);
  }

  void setAngleDeg(const QString& degrees) {
    mMicrodegrees = degStringToMicrodeg(degrees) % 360000000;
  }

  void setAngleRad(qreal radians) noexcept {
    mMicrodegrees = fmod(radians * 180e6 / (qreal)M_PI, 360e6);
  }

  // Conversions

  qint32 toMicroDeg() const noexcept { return mMicrodegrees; }

  qreal toDeg() const noexcept { return (qreal)mMicrodegrees / 1e6; }

  QString toDegString() const noexcept;

  qreal toRad() const noexcept {
    return (qreal)mMicrodegrees * (qreal)M_PI / 180e6;
  }

  // General Methods

  Angle abs() const noexcept;

  Angle& makeAbs() noexcept;

  Angle mappedTo0_360deg() const noexcept;

  Angle& mapTo0_360deg() noexcept;

  Angle mappedTo180deg() const noexcept;

  Angle& mapTo180deg() noexcept;

  // Static Methods

  static Angle fromDeg(qreal degrees) noexcept;

  static Angle fromDeg(const QString& degrees);

  static Angle fromRad(qreal radians) noexcept;

  // Static Methods to create often used angles
  static Angle deg0() noexcept { return Angle(0); }            
  static Angle deg45() noexcept { return Angle(45000000); }    
  static Angle deg90() noexcept { return Angle(90000000); }    
  static Angle deg135() noexcept { return Angle(135000000); }  
  static Angle deg180() noexcept { return Angle(180000000); }  
  static Angle deg225() noexcept { return Angle(225000000); }  
  static Angle deg270() noexcept { return Angle(270000000); }  
  static Angle deg315() noexcept { return Angle(315000000); }  

  // Operators
  Angle& operator=(const Angle& rhs) {
    mMicrodegrees = rhs.mMicrodegrees;
    return *this;
  }
  Angle& operator+=(const Angle& rhs) {
    mMicrodegrees = (mMicrodegrees + rhs.mMicrodegrees) % 360000000;
    return *this;
  }
  Angle& operator-=(const Angle& rhs) {
    mMicrodegrees = (mMicrodegrees - rhs.mMicrodegrees) % 360000000;
    return *this;
  }
  Angle operator+(const Angle& rhs) const {
    return Angle(mMicrodegrees + rhs.mMicrodegrees);
  }
  Angle operator-() const { return Angle(-mMicrodegrees); }
  Angle operator-(const Angle& rhs) const {
    return Angle(mMicrodegrees - rhs.mMicrodegrees);
  }
  Angle operator*(const Angle& rhs) const {
    return Angle(mMicrodegrees * rhs.mMicrodegrees);
  }
  Angle operator*(qint32 rhs) const { return Angle(mMicrodegrees * rhs); }
  Angle operator/(const Angle& rhs) const {
    return Angle(mMicrodegrees / rhs.mMicrodegrees);
  }
  Angle operator/(qint32 rhs) const { return Angle(mMicrodegrees / rhs); }
  Angle operator%(const Angle& rhs) const {
    return Angle(mMicrodegrees % rhs.mMicrodegrees);
  }
  bool operator>(const Angle& rhs) const {
    return mMicrodegrees > rhs.mMicrodegrees;
  }
  bool operator>(qint32 rhs) const { return mMicrodegrees > rhs; }
  bool operator<(const Angle& rhs) const {
    return mMicrodegrees < rhs.mMicrodegrees;
  }
  bool operator<(qint32 rhs) const { return mMicrodegrees < rhs; }
  bool operator>=(const Angle& rhs) const {
    return mMicrodegrees >= rhs.mMicrodegrees;
  }
  bool operator>=(qint32 rhs) const { return mMicrodegrees >= rhs; }
  bool operator<=(const Angle& rhs) const {
    return mMicrodegrees <= rhs.mMicrodegrees;
  }
  bool operator<=(qint32 rhs) const { return mMicrodegrees <= rhs; }
  bool operator==(const Angle& rhs) const {
    return mMicrodegrees == rhs.mMicrodegrees;
  }
  bool operator==(qint32 rhs) const { return mMicrodegrees == rhs; }
  bool operator!=(const Angle& rhs) const {
    return mMicrodegrees != rhs.mMicrodegrees;
  }
  bool     operator!=(qint32 rhs) const { return mMicrodegrees != rhs; }
  explicit operator bool() const { return mMicrodegrees != 0; }

private:
  // Private Static Functions

  static qint32 degStringToMicrodeg(const QString& degrees);

  // Private Member Variables
  qint32 mMicrodegrees;  
};

/*******************************************************************************
 *  Non-Member Functions
 ******************************************************************************/

template <>
inline SExpression serializeToSExpression(const Angle& obj) {
  return SExpression::createToken(obj.toDegString());
}

template <>
inline Angle deserializeFromSExpression(const SExpression& sexpr,
                                        bool               throwIfEmpty) {
  QString str = sexpr.getStringOrToken(throwIfEmpty);
  return Angle::fromDeg(str);  // can throw
}

inline QDataStream& operator<<(QDataStream& stream, const Angle& angle) {
  stream << angle.toDeg();
  return stream;
}

inline QDebug operator<<(QDebug stream, const Angle& angle) {
  stream << QString("Angle(%1°)").arg(angle.toDeg());
  return stream;
}

inline uint qHash(const Angle& key, uint seed = 0) noexcept {
  return ::qHash(key.toMicroDeg(), seed);
}

/*******************************************************************************
 *  End of File
 ******************************************************************************/

}  // namespace librepcb

Q_DECLARE_METATYPE(librepcb::Angle)

#endif  // LIBREPCB_ANGLE_H