length.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_CORE_LENGTH_H
#define LIBREPCB_CORE_LENGTH_H
 
/*******************************************************************************
 *  Includes
 ******************************************************************************/
#include "../exceptions.h"
 
#include <type_safe/constrained_type.hpp>
 
#include <QtCore>
 
/*******************************************************************************
 *  Namespace / Forward Declarations
 ******************************************************************************/
namespace librepcb {
 
/*******************************************************************************
 *  Typedefs
 ******************************************************************************/
 
#ifdef USE_32BIT_LENGTH_UNITS
typedef qint32 LengthBase_t;
#else
typedef qint64 LengthBase_t;
#endif
 
/*******************************************************************************
 *  Class Length
 ******************************************************************************/
 
class Length {
  Q_DECLARE_TR_FUNCTIONS(Length)
 
public:
  //  Constructors / Destructor
 
  constexpr Length() noexcept : Length(0) {}
 
  constexpr Length(const Length& length) noexcept
    : mNanometers(length.mNanometers) {}
 
  constexpr Length(LengthBase_t nanometers) noexcept
    : mNanometers(nanometers) {}
 
  ~Length() = default;
 
  // Setters
 
  void setLengthNm(LengthBase_t nanometers) noexcept {
    mNanometers = nanometers;
  }
 
  void setLengthMm(qreal millimeters) { setLengthFromFloat(millimeters * 1e6); }
 
  void setLengthMm(const QString& millimeters) {
    mNanometers = mmStringToNm(millimeters);
  }
 
  void setLengthInch(qreal inches) { setLengthFromFloat(inches * sNmPerInch); }
 
  void setLengthMil(qreal mils) { setLengthFromFloat(mils * sNmPerMil); }
 
  void setLengthPx(qreal pixels) { setLengthFromFloat(pixels * sNmPerPixel); }
 
  // Conversions
 
  LengthBase_t toNm() const noexcept { return mNanometers; }
 
  QString toNmString() const noexcept { return QString::number(toNm()); }
 
  qreal toMicrometers() const noexcept { return (qreal)mNanometers / 1e3; }
 
  qreal toMm() const noexcept { return (qreal)mNanometers / 1e6; }
 
  QString toMmString() const noexcept;
 
  qreal toInch() const noexcept { return (qreal)mNanometers / sNmPerInch; }
 
  qreal toMil() const noexcept { return (qreal)mNanometers / sNmPerMil; }
 
  qreal toPx() const noexcept { return mNanometers * sPixelsPerNm; }
 
  // General Methods
 
  Length abs() const noexcept;
 
  Length& makeAbs() noexcept;
 
  Length mappedToGrid(const Length& gridInterval) const noexcept;
 
  Length& mapToGrid(const Length& gridInterval) noexcept;
 
  Length scaled(qreal factor) const noexcept;
 
  Length& scale(qreal factor) noexcept;
 
  // Static Functions
 
  static bool isValidMm(qreal millimeters) noexcept {
    return checkRange(millimeters * 1e6);
  }
 
  static Length fromMm(qreal millimeters,
                       const Length& gridInterval = Length(0));
 
  static Length fromMm(const QString& millimeters,
                       const Length& gridInterval = Length(0));
 
  static Length fromInch(qreal inches, const Length& gridInterval = Length(0));
 
  static Length fromMil(qreal mils, const Length& gridInterval = Length(0));
 
  static Length fromPx(qreal pixels, const Length& gridInterval = Length(0));
 
  static Length min() noexcept;
 
  static Length max() noexcept;
 
  // Operators
  Length& operator=(const Length& rhs) {
    mNanometers = rhs.mNanometers;
    return *this;
  }
  Length& operator+=(const Length& rhs) {
    mNanometers += rhs.mNanometers;
    return *this;
  }
  Length& operator-=(const Length& rhs) {
    mNanometers -= rhs.mNanometers;
    return *this;
  }
  Length& operator*=(const Length& rhs) {
    mNanometers *= rhs.mNanometers;
    return *this;
  }
  Length& operator*=(LengthBase_t rhs) {
    mNanometers *= rhs;
    return *this;
  }
  Length& operator/=(const Length& rhs) {
    mNanometers /= rhs.mNanometers;
    return *this;
  }
  Length& operator/=(LengthBase_t rhs) {
    mNanometers /= rhs;
    return *this;
  }
  Length operator+(const Length& rhs) const {
    return Length(mNanometers + rhs.mNanometers);
  }
  Length operator-() const { return Length(-mNanometers); }
  Length operator-(const Length& rhs) const {
    return Length(mNanometers - rhs.mNanometers);
  }
  Length operator*(const Length& rhs) const {
    return Length(mNanometers * rhs.mNanometers);
  }
  Length operator*(LengthBase_t rhs) const { return Length(mNanometers * rhs); }
  Length operator/(const Length& rhs) const {
    return Length(mNanometers / rhs.mNanometers);
  }
  Length operator/(LengthBase_t rhs) const { return Length(mNanometers / rhs); }
  Length operator%(const Length& rhs) const {
    return Length(mNanometers % rhs.mNanometers);
  }
  constexpr bool operator>(const Length& rhs) const {
    return mNanometers > rhs.mNanometers;
  }
  constexpr bool operator>(LengthBase_t rhs) const { return mNanometers > rhs; }
  constexpr bool operator<(const Length& rhs) const {
    return mNanometers < rhs.mNanometers;
  }
  constexpr bool operator<(LengthBase_t rhs) const { return mNanometers < rhs; }
  constexpr bool operator>=(const Length& rhs) const {
    return mNanometers >= rhs.mNanometers;
  }
  constexpr bool operator>=(LengthBase_t rhs) const {
    return mNanometers >= rhs;
  }
  constexpr bool operator<=(const Length& rhs) const {
    return mNanometers <= rhs.mNanometers;
  }
  constexpr bool operator<=(LengthBase_t rhs) const {
    return mNanometers <= rhs;
  }
  constexpr bool operator==(const Length& rhs) const {
    return mNanometers == rhs.mNanometers;
  }
  constexpr bool operator==(LengthBase_t rhs) const {
    return mNanometers == rhs;
  }
  constexpr bool operator!=(const Length& rhs) const {
    return mNanometers != rhs.mNanometers;
  }
  constexpr bool operator!=(LengthBase_t rhs) const {
    return mNanometers != rhs;
  }
 
private:
  // Private Functions
 
  void setLengthFromFloat(qreal nanometers);
 
  // Private Static Functions
 
  static bool checkRange(qreal nanometers, bool doThrow = false);
 
  static LengthBase_t mapNmToGrid(LengthBase_t nanometers,
                                  const Length& gridInterval) noexcept;
 
  static LengthBase_t mmStringToNm(const QString& millimeters);
 
  // Private Member Variables
  LengthBase_t mNanometers;  
 
  // Static Length Converting Constants
  static constexpr LengthBase_t sNmPerInch = 25400000;  
  static constexpr LengthBase_t sNmPerMil = 25400;  
  static constexpr LengthBase_t sPixelsPerInch =
      72;  
  static constexpr qreal sNmPerPixel = (qreal)sNmPerInch / sPixelsPerInch;
  static constexpr qreal sPixelsPerNm = (qreal)sPixelsPerInch / sNmPerInch;
};
 
/*******************************************************************************
 *  Non-Member Functions
 ******************************************************************************/
 
inline QDataStream& operator<<(QDataStream& stream, const Length& length) {
  stream << length.toMm();
  return stream;
}
 
inline QDebug operator<<(QDebug stream, const Length& length) {
  stream << QString("Length(%1mm)").arg(length.toMm());
  return stream;
}
 
inline std::size_t qHash(const Length& key, std::size_t seed = 0) noexcept {
  return ::qHash(key.toNm(), seed);
}
 
/*******************************************************************************
 *  Class UnsignedLength
 ******************************************************************************/
 
struct UnsignedLengthVerifier {
  template <typename Value, typename Predicate>
  static constexpr auto verify(Value&& val, const Predicate& p) ->
      typename std::decay<Value>::type {
    return p(val) ? std::forward<Value>(val)
                  : (throw RuntimeError(__FILE__, __LINE__,
                                        Length::tr("Value must be >= 0!")),
                     std::forward<Value>(val));
  }
};
 
struct UnsignedLengthConstraint {
  constexpr bool operator()(const Length& l) const noexcept { return l >= 0; }
};
 
using UnsignedLength =
    type_safe::constrained_type<Length, UnsignedLengthConstraint,
                                UnsignedLengthVerifier>;
 
inline UnsignedLength operator+(const UnsignedLength& lhs,
                                const UnsignedLength& rhs) noexcept {
  return UnsignedLength(*lhs +
                        *rhs);  // will not throw as long as there's no overflow
}
 
inline UnsignedLength& operator+=(UnsignedLength& lhs,
                                  const UnsignedLength& rhs) noexcept {
  lhs = lhs + rhs;  // will not throw as long as there's no overflow
  return lhs;
}
 
inline Length operator*(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) * rhs;
}
inline Length operator/(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) / rhs;
}
inline Length operator+(const Length& lhs, const UnsignedLength& rhs) noexcept {
  return lhs + *rhs;
}
inline Length operator+(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return *lhs + rhs;
}
inline Length operator-(const Length& lhs, const UnsignedLength& rhs) noexcept {
  return lhs - *rhs;
}
inline Length operator-(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return *lhs - rhs;
}
inline Length operator-(const UnsignedLength& lhs) noexcept {
  return -(*lhs);
}
inline bool operator>(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) > rhs;
}
inline bool operator>(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) > rhs;
}
inline bool operator>=(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) >= rhs;
}
inline bool operator>=(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) >= rhs;
}
inline bool operator<(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) < rhs;
}
inline bool operator<(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) < rhs;
}
inline bool operator<=(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) <= rhs;
}
inline bool operator<=(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) <= rhs;
}
inline bool operator==(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) == rhs;
}
inline bool operator==(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) == rhs;
}
inline bool operator!=(const UnsignedLength& lhs, const Length& rhs) noexcept {
  return (*lhs) != rhs;
}
inline bool operator!=(const UnsignedLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) != rhs;
}
 
inline QDataStream& operator<<(QDataStream& stream,
                               const UnsignedLength& length) {
  stream << length->toMm();
  return stream;
}
 
inline QDebug operator<<(QDebug stream, const UnsignedLength& length) {
  stream << QString("UnsignedLength(%1mm)").arg(length->toMm());
  return stream;
}
 
inline std::size_t qHash(const UnsignedLength& key,
                         std::size_t seed = 0) noexcept {
  return ::qHash(key->toNm(), seed);
}
 
/*******************************************************************************
 *  Class PositiveLength
 ******************************************************************************/
 
struct PositiveLengthVerifier {
  template <typename Value, typename Predicate>
  static constexpr auto verify(Value&& val, const Predicate& p) ->
      typename std::decay<Value>::type {
    return p(val) ? std::forward<Value>(val)
                  : (throw RuntimeError(__FILE__, __LINE__,
                                        Length::tr("Value must be > 0!")),
                     std::forward<Value>(val));
  }
};
 
struct PositiveLengthConstraint {
  constexpr bool operator()(const Length& l) const noexcept { return l > 0; }
};
 
using PositiveLength =
    type_safe::constrained_type<Length, PositiveLengthConstraint,
                                PositiveLengthVerifier>;
 
inline UnsignedLength positiveToUnsigned(const PositiveLength& l) noexcept {
  return UnsignedLength(*l);
}
 
inline PositiveLength operator+(const PositiveLength& lhs,
                                const PositiveLength& rhs) noexcept {
  return PositiveLength(*lhs +
                        *rhs);  // will not throw as long as there's no overflow
}
 
inline PositiveLength operator+(const PositiveLength& lhs,
                                const UnsignedLength& rhs) noexcept {
  return PositiveLength(*lhs +
                        *rhs);  // will not throw as long as there's no overflow
}
 
inline PositiveLength operator+(const UnsignedLength& lhs,
                                const PositiveLength& rhs) noexcept {
  return PositiveLength(*lhs +
                        *rhs);  // will not throw as long as there's no overflow
}
 
inline PositiveLength& operator+=(PositiveLength& lhs,
                                  const PositiveLength& rhs) noexcept {
  lhs = lhs + rhs;  // will not throw as long as there's no overflow
  return lhs;
}
 
inline PositiveLength& operator+=(PositiveLength& lhs,
                                  const UnsignedLength& rhs) noexcept {
  lhs = lhs + rhs;  // will not throw as long as there's no overflow
  return lhs;
}
 
inline UnsignedLength& operator+=(UnsignedLength& lhs,
                                  const PositiveLength& rhs) noexcept {
  lhs = positiveToUnsigned(
      lhs + rhs);  // will not throw as long as there's no overflow
  return lhs;
}
 
inline Length operator*(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) * rhs;
}
inline Length operator/(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) / rhs;
}
inline Length operator+(const Length& lhs, const PositiveLength& rhs) noexcept {
  return lhs + *rhs;
}
inline Length operator+(const PositiveLength& lhs, const Length& rhs) noexcept {
  return *lhs + rhs;
}
inline Length operator-(const Length& lhs, const PositiveLength& rhs) noexcept {
  return lhs - *rhs;
}
inline Length operator-(const PositiveLength& lhs, const Length& rhs) noexcept {
  return *lhs - rhs;
}
inline Length operator-(const UnsignedLength& lhs,
                        const PositiveLength& rhs) noexcept {
  return *lhs - *rhs;
}
inline Length operator-(const PositiveLength& lhs,
                        const UnsignedLength& rhs) noexcept {
  return *lhs - *rhs;
}
inline Length operator-(const PositiveLength& lhs) noexcept {
  return -(*lhs);
}
inline bool operator>(const UnsignedLength& lhs,
                      const PositiveLength& rhs) noexcept {
  return (*lhs) > (*rhs);
}
inline bool operator>(const PositiveLength& lhs,
                      const UnsignedLength& rhs) noexcept {
  return (*lhs) > (*rhs);
}
inline bool operator>(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) > rhs;
}
inline bool operator>(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) > rhs;
}
inline bool operator>=(const UnsignedLength& lhs,
                       const PositiveLength& rhs) noexcept {
  return (*lhs) >= (*rhs);
}
inline bool operator>=(const PositiveLength& lhs,
                       const UnsignedLength& rhs) noexcept {
  return (*lhs) >= (*rhs);
}
inline bool operator>=(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) >= rhs;
}
inline bool operator>=(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) >= rhs;
}
inline bool operator<(const UnsignedLength& lhs,
                      const PositiveLength& rhs) noexcept {
  return (*lhs) < (*rhs);
}
inline bool operator<(const PositiveLength& lhs,
                      const UnsignedLength& rhs) noexcept {
  return (*lhs) < (*rhs);
}
inline bool operator<(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) < rhs;
}
inline bool operator<(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) < rhs;
}
inline bool operator<=(const UnsignedLength& lhs,
                       const PositiveLength& rhs) noexcept {
  return (*lhs) <= (*rhs);
}
inline bool operator<=(const PositiveLength& lhs,
                       const UnsignedLength& rhs) noexcept {
  return (*lhs) <= (*rhs);
}
inline bool operator<=(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) <= rhs;
}
inline bool operator<=(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) <= rhs;
}
inline bool operator==(const UnsignedLength& lhs,
                       const PositiveLength& rhs) noexcept {
  return (*lhs) == (*rhs);
}
inline bool operator==(const PositiveLength& lhs,
                       const UnsignedLength& rhs) noexcept {
  return (*lhs) == (*rhs);
}
inline bool operator==(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) == rhs;
}
inline bool operator==(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) == rhs;
}
inline bool operator!=(const UnsignedLength& lhs,
                       const PositiveLength& rhs) noexcept {
  return (*lhs) != (*rhs);
}
inline bool operator!=(const PositiveLength& lhs,
                       const UnsignedLength& rhs) noexcept {
  return (*lhs) != (*rhs);
}
inline bool operator!=(const PositiveLength& lhs, const Length& rhs) noexcept {
  return (*lhs) != rhs;
}
inline bool operator!=(const PositiveLength& lhs, LengthBase_t rhs) noexcept {
  return (*lhs) != rhs;
}
 
inline QDataStream& operator<<(QDataStream& stream,
                               const PositiveLength& length) {
  stream << length->toMm();
  return stream;
}
 
inline QDebug operator<<(QDebug stream, const PositiveLength& length) {
  stream << QString("PositiveLength(%1mm)").arg(length->toMm());
  return stream;
}
 
inline std::size_t qHash(const PositiveLength& key,
                         std::size_t seed = 0) noexcept {
  return ::qHash(key->toNm(), seed);
}
 
/*******************************************************************************
 *  Class Point3D
 ******************************************************************************/
 
using Point3D = std::tuple<Length, Length, Length>;
 
QDebug operator<<(QDebug stream, const Point3D& obj);
 
/*******************************************************************************
 *  End of File
 ******************************************************************************/
 
}  // namespace librepcb
 
Q_DECLARE_METATYPE(librepcb::Length)
 
#endif