Units For Physical Quantities

Units for expressing physical quantities like time and length. More...

Variables
constexpr auto	playrho::Second = PLAYRHO_UNIT(Time, boost::units::si::second)
	Second unit of time. More...
constexpr auto	playrho::SquareSecond = Second * Second
	Square second unit. More...
constexpr auto	playrho::Hertz = PLAYRHO_UNIT(Frequency, boost::units::si::hertz)
	Hertz unit of Frequency. More...
constexpr auto	playrho::Meter = PLAYRHO_UNIT(Length, boost::units::si::meter)
	Meter unit of Length. More...
constexpr auto	playrho::MeterPerSecond = PLAYRHO_UNIT(LinearVelocity, boost::units::si::meter_per_second)
	Meter per second unit of linear velocity. More...
constexpr auto	playrho::MeterPerSquareSecond
	Meter per square second unit of linear acceleration. More...
constexpr auto	playrho::Kilogram = PLAYRHO_UNIT(Mass, boost::units::si::kilogram)
	Kilogram unit of mass. More...
constexpr auto	playrho::SquareMeter = PLAYRHO_UNIT(Area, boost::units::si::square_meter)
	Square meter unit of area. More...
constexpr auto	playrho::CubicMeter = Meter * Meter * Meter
	Cubic meter unit of volume.
constexpr auto	playrho::KilogramPerSquareMeter
	Kilogram per square meter unit of area density. More...
constexpr auto	playrho::Radian = PLAYRHO_UNIT(Angle, boost::units::si::radian)
	Radian unit of angle. More...
constexpr auto	playrho::Degree = Angle{Radian * Pi / Real{180}}
	Degree unit of angle quantity. More...
constexpr auto	playrho::SquareRadian = Radian * Radian
	Square radian unit type. More...
constexpr auto	playrho::RadianPerSecond = PLAYRHO_UNIT(AngularVelocity, boost::units::si::radian_per_second)
	Radian per second unit of angular velocity. More...
constexpr auto	playrho::DegreePerSecond = AngularVelocity{RadianPerSecond * Degree / Radian}
	Degree per second unit of angular velocity. More...
constexpr auto	playrho::RadianPerSquareSecond = Radian / (Second * Second)
	Radian per square second unit of angular acceleration. More...
constexpr auto	playrho::DegreePerSquareSecond = Degree / (Second * Second)
	Degree per square second unit of angular acceleration. More...
constexpr auto	playrho::Newton = PLAYRHO_UNIT(Force, boost::units::si::newton)
	Newton unit of force. More...
constexpr auto	playrho::NewtonMeter = PLAYRHO_UNIT(Torque, boost::units::si::newton_meter)
	Newton meter unit of torque. More...
constexpr auto	playrho::NewtonSecond = Newton * Second
	Newton second unit of momentum. More...
constexpr auto	playrho::NewtonMeterSecond = NewtonMeter * Second
	Newton meter second unit of angular momentum. More...
constexpr auto	playrho::RevolutionsPerMinute = 2 * Pi * Radian / (Real{60} * Second)
	Revolutions per minute units of angular velocity. More...

Detailed Description

Units for expressing physical quantities like time and length.

These are the unit definitions for expressing physical quantities like time and length. Conceptually a given unit is only usable with the quantities that are made up of the dimensions which the unit is associated with.

See also

Physical Quantity Types.

Variable Documentation

Degree

constexpr auto playrho::Degree = Angle{Radian * Pi / Real{180}}

constexpr

Degree unit of angle quantity.

See also

Angle.

Radian.

Examples

WorldBody.cpp.

Referenced by playrho::operator""_deg().

DegreePerSecond

constexpr auto playrho::DegreePerSecond = AngularVelocity{RadianPerSecond * Degree / Radian}

constexpr

Degree per second unit of angular velocity.

See also

AngularVelocity.

Degree, Second.

DegreePerSquareSecond

constexpr auto playrho::DegreePerSquareSecond = Degree / (Second * Second)

constexpr

Degree per square second unit of angular acceleration.

See also

AngularAcceleration.

Degree, Second.

Hertz

constexpr auto playrho::Hertz = PLAYRHO_UNIT(Frequency, boost::units::si::hertz)

constexpr

Hertz unit of Frequency.

Represents the hertz unit of frequency (Hz).

See also

Frequency.

https://en.wikipedia.org/wiki/Hertz

Referenced by playrho::operator""_Hz().

Kilogram

constexpr auto playrho::Kilogram = PLAYRHO_UNIT(Mass, boost::units::si::kilogram)

constexpr

Kilogram unit of mass.

Note

This is the SI base unit of mass.

See also

Mass.

https://en.wikipedia.org/wiki/Kilogram

Examples

WorldBody.cpp.

Referenced by playrho::d2::ComputeMassData(), playrho::d2::GetAngularReaction(), playrho::d2::ChainShapeConf::GetMassData(), playrho::d2::GetMassData(), playrho::d2::InitVelocity(), playrho::operator""_g(), playrho::operator""_kg(), playrho::operator""_Pg(), playrho::operator""_Yg(), playrho::d2::SolvePosition(), and playrho::d2::SolveVelocity().

KilogramPerSquareMeter

constexpr auto playrho::KilogramPerSquareMeter

constexpr

Initial value:

=
    PLAYRHO_UNIT(AreaDensity, boost::units::si::kilogram_per_square_meter)

Kilogram per square meter unit of area density.

See also

AreaDensity.

Referenced by playrho::operator""_kgpm2().

Meter

constexpr auto playrho::Meter = PLAYRHO_UNIT(Length, boost::units::si::meter)

constexpr

Meter unit of Length.

A unit of the length quantity.

Note

This is the SI base unit of length.

See also

Length.

https://en.wikipedia.org/wiki/Metre

Examples

DistanceJoint.cpp, GearJoint.cpp, MotorJoint.cpp, PrismaticJoint.cpp, PulleyJoint.cpp, RevoluteJoint.cpp, WeldJoint.cpp, WheelJoint.cpp, World.cpp, and WorldBody.cpp.

Referenced by playrho::d2::GetGearJointConf(), playrho::d2::GetManifold(), playrho::d2::InitVelocity(), playrho::operator""_cm(), playrho::operator""_dm(), playrho::operator""_Gm(), playrho::operator""_km(), playrho::operator""_m(), playrho::operator""_Mm(), playrho::d2::SolvePosition(), playrho::d2::SolveVelocity(), and playrho::d2::TestPoint().

MeterPerSecond

constexpr auto playrho::MeterPerSecond = PLAYRHO_UNIT(LinearVelocity, boost::units::si::meter_per_second)

constexpr

Meter per second unit of linear velocity.

See also

LinearVelocity.

Referenced by playrho::d2::GetCentripetalForce(), playrho::d2::GetContactRelVelocity(), playrho::operator""_kps(), playrho::operator""_mps(), and playrho::d2::SolveVelocity().

MeterPerSquareSecond

constexpr auto playrho::MeterPerSquareSecond

constexpr

Initial value:

=
    PLAYRHO_UNIT(LinearAcceleration, boost::units::si::meter_per_second_squared)

Meter per square second unit of linear acceleration.

See also

LinearAcceleration.

Examples

DistanceJoint.cpp, RevoluteJoint.cpp, World.cpp, and WorldBody.cpp.

Referenced by playrho::operator""_mps2().

Newton

constexpr auto playrho::Newton = PLAYRHO_UNIT(Force, boost::units::si::newton)

constexpr

Newton unit of force.

See also

Force.

Examples

PrismaticJoint.cpp, and WorldBody.cpp.

Referenced by playrho::operator""_N().

NewtonMeter

constexpr auto playrho::NewtonMeter = PLAYRHO_UNIT(Torque, boost::units::si::newton_meter)

constexpr

Newton meter unit of torque.

See also

Torque.

Newton, Meter.

Examples

RevoluteJoint.cpp, and WheelJoint.cpp.

Referenced by playrho::operator""_Nm().

NewtonMeterSecond

constexpr auto playrho::NewtonMeterSecond = NewtonMeter * Second

constexpr

Newton meter second unit of angular momentum.

See also

AngularMomentum.

Newton, Meter, Second.

Examples

RevoluteJoint.cpp, and WorldBody.cpp.

NewtonSecond

constexpr auto playrho::NewtonSecond = Newton * Second

constexpr

Newton second unit of momentum.

See also

Momentum.

Newton, Second.

Referenced by playrho::d2::GetLinearReaction(), playrho::d2::InitVelocity(), playrho::operator""_Ns(), and playrho::d2::SolveVelocity().

Radian

constexpr auto playrho::Radian = PLAYRHO_UNIT(Angle, boost::units::si::radian)

constexpr

Radian unit of angle.

See also

Angle.

Degree.

Examples

WorldBody.cpp.

Referenced by playrho::d2::ApplyForce(), playrho::d2::ApplyLinearImpulse(), playrho::Atan2(), playrho::d2::GetAngularReaction(), playrho::GetCircleVertices(), playrho::d2::GetContactRelVelocity(), playrho::GetDelta(), playrho::d2::GetEffectiveInvMass(), playrho::d2::GetGearJointConf(), playrho::d2::GetLinearVelocity(), playrho::d2::GetLinearVelocityFromWorldPoint(), playrho::GetNormalized(), playrho::d2::InitVelocity(), playrho::operator""_rad(), playrho::d2::SetForce(), playrho::d2::SolvePosition(), and playrho::d2::SolveVelocity().

RadianPerSecond

constexpr auto playrho::RadianPerSecond = PLAYRHO_UNIT(AngularVelocity, boost::units::si::radian_per_second)

constexpr

Radian per second unit of angular velocity.

See also

AngularVelocity.

Radian, Second.

Examples

PrismaticJoint.cpp, RevoluteJoint.cpp, WheelJoint.cpp, and WorldBody.cpp.

Referenced by playrho::d2::SolveVelocity().

RadianPerSquareSecond

constexpr auto playrho::RadianPerSquareSecond = Radian / (Second * Second)

constexpr

Radian per square second unit of angular acceleration.

See also

AngularAcceleration.

Radian, Second.

Examples

Body.cpp, DistanceJoint.cpp, RevoluteJoint.cpp, World.cpp, and WorldBody.cpp.

Referenced by playrho::d2::CalcGravitationalAcceleration().

RevolutionsPerMinute

constexpr auto playrho::RevolutionsPerMinute = 2 * Pi * Radian / (Real{60} * Second)

constexpr

Revolutions per minute units of angular velocity.

See also

AngularVelocity, Time

Minute.

Referenced by playrho::operator""_rpm().

Second

constexpr auto playrho::Second = PLAYRHO_UNIT(Time, boost::units::si::second)

constexpr

Second unit of time.

Note

This is the SI base unit of time.

See also

Time.

https://en.wikipedia.org/wiki/Second

Examples

World.cpp.

Referenced by playrho::d2::GetAngularReaction(), playrho::d2::InitVelocity(), playrho::operator""_d(), playrho::operator""_h(), playrho::operator""_min(), playrho::operator""_s(), and playrho::d2::SolveVelocity().

SquareMeter

constexpr auto playrho::SquareMeter = PLAYRHO_UNIT(Area, boost::units::si::square_meter)

constexpr

Square meter unit of area.

See also

Area.

Examples

WorldBody.cpp.

Referenced by playrho::ComputeCentroid(), playrho::d2::Simplex::Get(), playrho::d2::GetAngularReaction(), playrho::d2::VertexSet::GetDefaultMinSeparationSquared(), playrho::GetPolarMoment(), playrho::d2::InitVelocity(), playrho::operator""_m2(), playrho::d2::RayCast(), playrho::d2::SolvePosition(), and playrho::d2::SolveVelocity().

SquareRadian

constexpr auto playrho::SquareRadian = Radian * Radian

constexpr

Square radian unit type.

See also

Angle.

Radian.

Examples

Body.cpp, FrictionJoint.cpp, MotorJoint.cpp, RevoluteJoint.cpp, WeldJoint.cpp, and WorldBody.cpp.

Referenced by playrho::d2::GetEffectiveMassMatrix(), playrho::d2::GetLocalRotInertia(), playrho::d2::GetMassData(), playrho::d2::VelocityConstraint::GetPoint(), playrho::d2::InitVelocity(), and playrho::d2::SolvePosition().

SquareSecond

constexpr auto playrho::SquareSecond = Second * Second

constexpr

Square second unit.

See also

Second

Examples

WorldBody.cpp.