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Conversions.hpp
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#ifndef LOUIERIKSSON_CONVERSIONS_HPP
#define LOUIERIKSSON_CONVERSIONS_HPP
#include <Hashmap.hpp>
#include <algorithm>
#include <stdexcept>
#include <string>
namespace LouiEriksson::Maths {
/**
* @mainpage Version 1.0.0
*
* @brief Contains conversion functions for various units of measurement.
*/
struct Conversions final {
using conversion_scalar_t = long double;
public:
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of speed.
*/
struct Speed {
public:
enum Unit : unsigned char {
KilometreHour,
FeetSecond,
MileHour,
Knot,
MetreSecond,
Mach,
Lightspeed,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Speed::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
protected:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "k/h", KilometreHour },
{ "km/h", KilometreHour },
{ "kph", KilometreHour },
{ "f/s", FeetSecond },
{ "fps", FeetSecond },
{ "mi/h", MileHour },
{ "mph", MileHour },
{ "kn", Knot },
{ "kt", Knot },
{ "knot", Knot },
{ "knots", Knot },
{ "nmi/h", Knot },
{ "nmiph", Knot },
{ "m/s", MetreSecond },
{ "mps", MetreSecond },
{ "mach", Mach },
{ "c", Lightspeed },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ KilometreHour, "km/h" },
{ FeetSecond, "f/s" },
{ MileHour, "mph" },
{ Knot, "kn" },
{ MetreSecond, "m/s" },
{ Mach, "mach" },
{ Lightspeed, "c" },
};
/** @brief Conversions between common speed units and m/s. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ KilometreHour, 0.2777778 },
{ FeetSecond, 0.3048 },
{ MileHour, 0.44704 },
{ Knot, 0.514444 },
{ MetreSecond, 1.0 },
{ Mach, 340.29 },
{ Lightspeed, 299792458.0 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of distance.
*/
struct Distance final {
public:
enum Unit : unsigned char {
Millimetre,
Centimetre,
Inch,
Foot,
Yard,
Metre,
Kilometre,
Mile,
NauticalMile,
AstronomicalUnit,
Lightyear,
Parsec,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Distance::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
/**
* @brief Convert arc-seconds to metres.
*
* This function converts a given value in arc-seconds to its equivalent value in metres.
* The conversion is calculated using the formula:
* metres = arcSeconds * abs(cos(lat) * (1852 / 60)),
* where lat is the latitude in degrees.
*
* @param[in] _arcSeconds The value in arc-seconds to convert.
* @param[in] _lat (Optional) The latitude in degrees. Defaults to 0.0.
* @return The equivalent value in metres.
*
* @note The conversion assumes a spherical Earth and uses the latitude to correctly calculate the conversion factor.
*/
static conversion_scalar_t ArcSecondsToMetres(const conversion_scalar_t& _arcSeconds, const conversion_scalar_t& _lat = 0.0) {
return _arcSeconds * std::abs(std::cos(Conversions::Rotation::s_DegreesToRadians * _lat) * (1852.0 / 60.0));
}
/**
* @brief Convert metres to arc-seconds given a latitude.
*
* This function converts a given value in metres to its equivalent value in arc-seconds. The conversion takes into account the latitude using the formula:
* arc-seconds = metres * abs(cos(lat) / (1852 / 60)),
* where lat is the latitude in degrees.
*
* @param[in] _metres The value in metres to convert.
* @param[in] _lat (Optional) The latitude in degrees. Defaults to 0.0.
* @return The equivalent value in arc-seconds.
*
* @note The conversion assumes a spherical Earth and uses the latitude to correctly calculate the conversion factor.
*/
static conversion_scalar_t MetresToArcSeconds(const conversion_scalar_t& _metres, const conversion_scalar_t& _lat = 0.0) {
return _metres * std::abs(std::cos(Conversions::Rotation::s_DegreesToRadians * _lat) / (1852.0 / 60.0));
}
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "mm", Millimetre },
{ "cm", Centimetre },
{ "\"", Inch },
{ "in", Inch },
{ "f", Foot },
{ "\'", Foot },
{ "ft", Foot },
{ "yards", Yard },
{ "yard", Yard },
{ "yd", Yard },
{ "m", Metre },
{ "km", Kilometre },
{ "mi", Mile },
{ "nmi", NauticalMile },
{ "au", AstronomicalUnit },
{ "ly", Lightyear },
{ "lightyear", Lightyear },
{ "lightyears", Lightyear },
{ "pc", Parsec },
{ "parsec", Parsec },
{ "parsecs", Parsec },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ Millimetre, "mm" },
{ Centimetre, "cm" },
{ Inch, "in" },
{ Foot, "ft" },
{ Yard, "yd" },
{ Metre, "m" },
{ Kilometre, "km" },
{ Mile, "mi" },
{ NauticalMile, "nmi" },
{ AstronomicalUnit, "au" },
{ Lightyear, "ly" },
{ Parsec, "pc" },
};
/** @brief Conversions between common lateral distance units and metres. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ Millimetre, 0.001 },
{ Centimetre, 0.01 },
{ Inch, 0.0254 },
{ Foot, 0.30479999 },
{ Yard, 0.9144 },
{ Metre, 1.0 },
{ Kilometre, 1000.0 },
{ Mile, 1609.344 },
{ NauticalMile, 1852.0 },
{ AstronomicalUnit, 149597870700.0 },
{ Lightyear, 9460730472580800.0 },
{ Parsec, 30856775810000000.0 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of rotation.
*/
struct Rotation final {
public:
enum Unit : unsigned char {
Gradian,
Degree,
Radian,
Turn,
};
static constexpr conversion_scalar_t s_DegreesToRadians = M_PI / 180.0;
static constexpr conversion_scalar_t s_RadiansToDegrees = 180.0 / M_PI;
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Rotation::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "grad", Gradian },
{ "gradians", Gradian },
{ "°", Degree },
{ "d", Degree },
{ "deg", Degree },
{ "degree", Degree },
{ "degrees", Degree },
{ "rad", Radian },
{ "radians", Radian },
{ "turns", Turn },
{ "turn", Turn },
{ "cycle", Turn },
{ "pla", Turn },
{ "rev", Turn },
{ "tr", Turn },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ Gradian, "grad" },
{ Degree, "deg" },
{ Radian, "rad" },
{ Turn, "tr" },
};
/** @brief Conversions between common rotational distance units and degrees. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ Gradian, 0.9 },
{ Degree, 1.0 },
{ Radian, 57.29578 },
{ Turn, 360.0 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of time.
*/
struct Time final {
public:
enum Unit : unsigned char {
Nanosecond,
Microsecond,
Millisecond,
Second,
Minute,
Hour,
Day,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Time::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "nanosecond", Nanosecond },
{ "nanoseconds", Nanosecond },
{ "ns", Nanosecond },
{ "microsecond", Microsecond },
{ "microseconds", Microsecond },
{ "µs", Microsecond },
{ "millisecond", Millisecond },
{ "milliseconds", Millisecond },
{ "ms", Millisecond },
{ "s", Second },
{ "sec", Second },
{ "seconds", Second },
{ "secs", Second },
{ "m", Minute },
{ "min", Minute },
{ "minute", Minute },
{ "minutes", Minute },
{ "h", Hour },
{ "hour", Hour },
{ "hours", Hour },
{ "hr", Hour },
{ "d", Day },
{ "day", Day },
{ "days", Day },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ Nanosecond, "ns" },
{ Microsecond, "µs" },
{ Millisecond, "ms" },
{ Second, "s" },
{ Minute, "m" },
{ Hour, "h" },
{ Day, "d" },
};
/** @brief Conversions between common time units and seconds. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ Nanosecond, 0.000000001 },
{ Microsecond, 0.000001 },
{ Millisecond, 0.001 },
{ Second, 1.0 },
{ Minute, 60.0 },
{ Hour, 3600.0 },
{ Day, 86400.0 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of temperature.
*/
struct Temperature final {
public:
enum Unit : unsigned char {
Celsius,
Fahrenheit,
Kelvin,
};
static constexpr conversion_scalar_t s_PlanckTemperature = 14200000000000000000000000000000000.0;
static constexpr conversion_scalar_t s_AbsoluteZero = 0.0;
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Temperature::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
conversion_scalar_t result{};
// Convert to Kelvin:
switch (_from) {
case Celsius: { result = _val - 272.15; break; }
case Fahrenheit: { result = (_val + 459.67) / 1.8; break; }
case Kelvin: { result = _val; break; }
default: {
throw std::runtime_error("Not implemented!");
break;
}
}
// Clamp result above absolute zero.
result = std::max(result, s_AbsoluteZero);
// Convert Kelvin to target:
switch (_to) {
case Celsius: { result += 273.15; break; }
case Fahrenheit: { result = (result * 1.8) - 459.67; break; }
case Kelvin: { break; }
default: {
throw std::runtime_error("Not implemented!");
break;
}
}
return result;
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
static conversion_scalar_t ClampTemperature(const conversion_scalar_t& _val, Unit& _unit) {
return Convert(
std::min(
Convert(_val, _unit, Kelvin),
s_PlanckTemperature
),
Kelvin,
_unit
);
}
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "celsius", Celsius },
{ "c", Celsius },
{ "°c", Celsius },
{ "°C", Celsius },
{ "fahrenheit", Fahrenheit },
{ "f", Fahrenheit },
{ "°f", Fahrenheit },
{ "°F", Fahrenheit },
{ "kelvin", Kelvin },
{ "k", Kelvin },
{ "K", Kelvin },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ Celsius, "C" },
{ Fahrenheit, "F" },
{ Kelvin, "K" },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of pressure.
*/
struct Pressure final {
public:
enum Unit : unsigned char {
DyneSquareCentimetre,
MilliTorr,
Pascal,
MillimetreWater,
PoundSquareFoot,
Hectopascal,
CentimetreWater,
MillimetreMercury,
InchWater,
OunceSquareInch,
Decibel,
Kilopascal,
CentimetreMercury,
FeetWater,
InchMercury,
PoundSquareInch,
MetreWater,
TonneSquareFoot_Short,
TechnicalAtmosphere,
KilogramSquareCentimetre,
Bar,
Atmosphere,
Megapascal,
TonneSquareInch_Short,
TonneSquareInch_Long,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Pressure::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "dyn/cm²", DyneSquareCentimetre },
{ "dyn/cm^2", DyneSquareCentimetre },
{ "dyn/cm2", DyneSquareCentimetre },
{ "mTorr", MilliTorr },
{ "pascals", Pascal },
{ "pascal", Pascal },
{ "pa", Pascal },
{ "Pa", Pascal },
{ "N/m²", Pascal },
{ "N/m^2", Pascal },
{ "N/m2", Pascal },
{ "mmH2O", MillimetreWater },
{ "psf", PoundSquareFoot },
{ "millibars", Hectopascal },
{ "millibar", Hectopascal },
{ "mbar", Hectopascal },
{ "hPa", Hectopascal },
{ "hectopascals", Hectopascal },
{ "hectopascal", Hectopascal },
{ "cmH2O", CentimetreWater },
{ "mmHg", MillimetreMercury },
{ "inH20", InchWater },
{ "oz/in²", OunceSquareInch },
{ "oz/in^2", OunceSquareInch },
{ "oz/in2", OunceSquareInch },
{ "dB", Decibel },
{ "decibel", Decibel },
{ "decibels", Decibel },
{ "kpa", Kilopascal },
{ "kPa", Kilopascal },
{ "kilopascals", Kilopascal },
{ "kilopascal", Kilopascal },
{ "cmHg", CentimetreMercury },
{ "ftH2O", FeetWater },
{ "inHg", InchMercury },
{ "psi", PoundSquareInch },
{ "mH2O", MetreWater },
{ "tsf", TonneSquareFoot_Short },
{ "tsf_us", TonneSquareFoot_Short },
{ "tsf_short", TonneSquareFoot_Short },
{ "at", TechnicalAtmosphere },
{ "kg/cm²", KilogramSquareCentimetre },
{ "kg/cm^2", KilogramSquareCentimetre },
{ "kg/cm2", KilogramSquareCentimetre },
{ "bars", Bar },
{ "bar", Bar },
{ "atmospheres", Atmosphere },
{ "atmosphere", Atmosphere },
{ "atm", Atmosphere },
{ "MPa", Megapascal },
{ "megapascals", Megapascal },
{ "megapascal", Megapascal },
{ "tsi", TonneSquareInch_Short },
{ "tsi_us", TonneSquareInch_Short },
{ "tsi_short", TonneSquareInch_Short },
{ "tsi_uk", TonneSquareInch_Long },
{ "tsi_long", TonneSquareInch_Long },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ DyneSquareCentimetre, "dyn/cm2", },
{ MilliTorr, "mTorr", },
{ Pascal, "Pa", },
{ MillimetreWater, "mmH2O", },
{ PoundSquareFoot, "psf", },
{ Hectopascal, "hPa", },
{ CentimetreWater, "cmH2O", },
{ MillimetreMercury, "mmHg", },
{ InchWater, "inH2O", },
{ OunceSquareInch, "oz/in2", },
{ Decibel, "dB", },
{ Kilopascal, "kPa", },
{ CentimetreMercury, "cmHg", },
{ FeetWater, "ftH2O", },
{ InchMercury, "inHg", },
{ PoundSquareInch, "psi", },
{ MetreWater, "mH2O", },
{ TonneSquareFoot_Short, "tsf_short", },
{ TechnicalAtmosphere, "at", },
{ KilogramSquareCentimetre,"kg/cm2", },
{ Bar, "bar", },
{ Atmosphere, "atm", },
{ Megapascal, "MPa", },
{ TonneSquareInch_Short, "tsi_short", },
{ TonneSquareInch_Long, "tsi_long", },
};
/**
* @brief Conversions between common pressure units and atmospheres.
* @see SensorsONE, 2019. atm – Standard Atmosphere Pressure Unit [online]. Sensorsone.com. Available from: https://www.sensorsone.com/atm-standard-atmosphere-pressure-unit/ [Accessed 12 Mar 2024].
*/
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ DyneSquareCentimetre, 0.000000987 },
{ MilliTorr, 0.000001316 },
{ Pascal, 0.000009869 },
{ MillimetreWater, 0.000096784 },
{ PoundSquareFoot, 0.000472541 },
{ Hectopascal, 0.000986923 },
{ CentimetreWater, 0.000967839 },
{ MillimetreMercury, 0.001315789 },
{ InchWater, 0.002458319 },
{ OunceSquareInch, 0.004252876 },
{ Decibel, 0.005154639 },
{ Kilopascal, 0.009869233 },
{ CentimetreMercury, 0.013157895 },
{ FeetWater, 0.02949983 },
{ InchMercury, 0.033421008 },
{ PoundSquareInch, 0.06804619 },
{ MetreWater, 0.096783872 },
{ TonneSquareFoot_Short, 0.945081324 },
{ TechnicalAtmosphere, 0.967838719 },
{ KilogramSquareCentimetre, 0.967838719 },
{ Bar, 0.986923267 },
{ Atmosphere, 1.0 },
{ Megapascal, 9.869232667 },
{ TonneSquareInch_Short, 136.092009086 },
{ TonneSquareInch_Long, 152.422992094 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of mass.
*/
struct Mass final {
public:
enum Unit : unsigned char {
Nanogram,
Microgram,
Milligram,
Gram,
Ounce,
Pound,
Kilogram,
Ton,
Kiloton,
Megaton,
Gigaton,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Mass::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "nanogram", Nanogram },
{ "nanogramme", Nanogram },
{ "nanogrammes", Nanogram },
{ "nanograms", Nanogram },
{ "ng", Nanogram },
{ "microgram", Microgram },
{ "microgramme", Microgram },
{ "microgrammes", Microgram },
{ "micrograms", Microgram },
{ "μg", Microgram },
{ "mg", Milligram },
{ "milligram", Milligram },
{ "milligramme", Milligram },
{ "milligrammes", Milligram },
{ "milligrams", Milligram },
{ "g", Gram },
{ "gram", Gram },
{ "gramme", Gram },
{ "grammes", Gram },
{ "grams", Gram },
{ "ounce", Ounce },
{ "oz", Ounce },
{ "lb", Pound },
{ "pound", Pound },
{ "kg", Kilogram },
{ "kilogram", Kilogram },
{ "kilogramme", Kilogram },
{ "kilogrammes", Kilogram },
{ "kilograms", Kilogram },
{ "t", Ton },
{ "ton", Ton },
{ "tonne", Ton },
{ "tonnes", Ton },
{ "tons", Ton },
{ "kilotonne", Kiloton },
{ "kiloton", Kiloton },
{ "kilotonnes", Kiloton },
{ "kilotons", Kiloton },
{ "kt", Kiloton },
{ "megaton", Megaton },
{ "megatonne", Megaton },
{ "megatonnes", Megaton },
{ "megatons", Megaton },
{ "Mt", Megaton },
{ "gigaton", Gigaton },
{ "gigatonne", Gigaton },
{ "gigatonnes", Gigaton },
{ "gigatons", Gigaton },
{ "Gt", Gigaton },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ Nanogram, "ng" },
{ Microgram, "μg" },
{ Milligram, "mg" },
{ Gram, "g" },
{ Ounce, "oz" },
{ Pound, "lb" },
{ Kilogram, "kg" },
{ Ton, "t" },
{ Kiloton, "kt" },
{ Megaton, "Mt" },
{ Gigaton, "Gt" },
};
/** @brief Conversions between common mass units and kilograms. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ Nanogram, 0.000000000001 },
{ Microgram, 0.000000001 },
{ Milligram, 0.000001 },
{ Gram, 0.001 },
{ Ounce, 0.02834952 },
{ Pound, 0.4535923 },
{ Kilogram, 1.0 },
{ Ton, 1000.0 },
{ Kiloton, 1000000.0 },
{ Megaton, 1000000000.0 },
{ Gigaton, 1000000000000.0 },
};
};
/**
* @struct Volume
* @brief Provides a utility for deducing and converting between various units of area.
*/
struct Area final {
public:
enum Unit : unsigned char {
SquareMillimetre,
SquareCentimetre,
SquareInch,
SquareMetre,
SquareFoot,
Acre,
Hectare,
SquareYard,
};
/**
* @brief Tries to guess the Unit based on the provided symbol.
*
* @param[in] _symbol The symbol to try to guess the Unit from.
* @return An optional reference to the Unit enum value if a match is found, otherwise an empty optional reference.
*/
static Hashmap<std::string, Conversions::Area::Unit>::optional_ref TryGuessUnit(const std::string& _symbol) {
return s_Lookup.Get(_symbol);
}
/**
* @brief Converts a value from one unit to another.
*
* @param[in] _val The value to be converted.
* @param[in] _from The unit to convert from.
* @param[in] _to The unit to convert to.
*
* @return The converted value.
*/
[[nodiscard]] static conversion_scalar_t Convert(const conversion_scalar_t& _val, const Unit& _from, const Unit& _to) {
return _val * (s_Conversion[_from] / s_Conversion[_to]);
}
/**
* @brief Get the symbol associated with a given Unit.
*
* This function returns the symbol associated with a given Unit.
*
* @param[in] _unit The Unit value.
* @return A reference to the symbol associated with the Unit value.
*/
static const std::string& Symbol(const Unit& _unit) { return s_Symbol[_unit]; }
private:
inline static const Hashmap<std::string, Unit> s_Lookup {
{ "mm2", SquareMillimetre },
{ "mm^2", SquareMillimetre },
{ "mm²", SquareMillimetre },
{ "cm2", SquareCentimetre },
{ "cm^2", SquareCentimetre },
{ "cm²", SquareCentimetre },
{ "\"²", SquareInch },
{ "in2", SquareInch },
{ "in^2", SquareInch },
{ "in²", SquareInch },
{ "\'2", SquareFoot },
{ "ft2", SquareFoot },
{ "ft^2", SquareFoot },
{ "ft²", SquareFoot },
{ "yd2", SquareYard },
{ "yd^2", SquareYard },
{ "yd²", SquareYard },
{ "m2", SquareMetre },
{ "m^2", SquareMetre },
{ "m²", SquareMetre },
{ "ac", Acre },
{ "acre", Acre },
{ "ha", Hectare },
{ "hectare", Hectare },
};
inline static const Hashmap<Unit, std::string> s_Symbol {
{ SquareMillimetre, "mm2" },
{ SquareCentimetre, "cm2" },
{ SquareInch, "in2" },
{ SquareMetre, "m2" },
{ SquareFoot, "ft2" },
{ Acre, "ac" },
{ Hectare, "ha" },
{ SquareYard, "yd2" },
};
/** @brief Conversions between area units and square metres. */
inline static const Hashmap<Unit, conversion_scalar_t> s_Conversion {
{ SquareMillimetre, 0.000001 },
{ SquareCentimetre, 0.0001 },
{ SquareInch, 0.00064516 },