LSST Applications
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LSST Data Management Base Package
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A class representing an angle. More...
#include <Angle.h>
Public Member Functions | |
constexpr | Angle (double val, AngleUnit units=radians) noexcept |
Construct an Angle with the specified value (interpreted in the given units). More... | |
constexpr | Angle () noexcept |
Construct the zero angle. More... | |
constexpr | Angle (Angle const &other) noexcept=default |
Copy constructor. More... | |
constexpr | Angle (Angle &&other) noexcept=default |
Move constructor. More... | |
Angle & | operator= (Angle const &other) noexcept=default |
Copy assignment. More... | |
Angle & | operator= (Angle &&other) noexcept=default |
Move assignment. More... | |
~Angle ()=default | |
constexpr | operator double () const noexcept |
Convert an Angle to a double in radians. More... | |
constexpr double | asAngularUnits (AngleUnit const &units) const noexcept |
Return an Angle's value in the specified units. More... | |
constexpr double | asRadians () const noexcept |
Return an Angle's value in radians. More... | |
constexpr double | asDegrees () const noexcept |
Return an Angle's value in degrees. More... | |
constexpr double | asHours () const noexcept |
Return an Angle's value in hours. More... | |
constexpr double | asArcminutes () const noexcept |
Return an Angle's value in arcminutes. More... | |
constexpr double | asArcseconds () const noexcept |
Return an Angle's value in arcseconds. More... | |
constexpr double | asMilliarcseconds () const noexcept |
Return an Angle's value in milliarcseconds. More... | |
Angle | wrap () const noexcept |
Wrap this angle to the range [0, 2π). More... | |
Angle | wrapCtr () const noexcept |
Wrap this angle to the range [-π, π). More... | |
Angle | wrapNear (Angle const &refAng) const noexcept |
Wrap this angle to a value x such that -π ≤ x - refAng ≤ π, approximately. More... | |
Angle | separation (Angle const &other) const noexcept |
The signed difference between two Angles. More... | |
Angle & | operator*= (double const &d) noexcept |
Multiply this angle by the given factor. More... | |
Angle & | operator*= (int const &d) noexcept |
Angle & | operator+= (double const &d) noexcept |
Increase this angle by the given number of radians. More... | |
Angle & | operator+= (int const &d) noexcept |
Angle & | operator-= (double const &d) noexcept |
Decrease this angle by the given number of radians. More... | |
Angle & | operator-= (int const &d) noexcept |
constexpr bool | operator== (const Angle &rhs) const noexcept |
Test if two Angles represent the same angle (without wrapping). More... | |
constexpr bool | operator!= (const Angle &rhs) const noexcept |
constexpr bool | operator<= (const Angle &rhs) const noexcept |
Compare the sizes of two Angles (without wrapping). More... | |
constexpr bool | operator>= (const Angle &rhs) const noexcept |
constexpr bool | operator< (const Angle &rhs) const noexcept |
constexpr bool | operator> (const Angle &rhs) const noexcept |
std::size_t | hash_value () const noexcept |
Return a hash of this object. More... | |
Friends | |
class | AngleUnit |
Related Functions | |
(Note that these are not member functions.) | |
constexpr Angle | operator+ (Angle a, Angle d) noexcept |
Sum of two angles. More... | |
constexpr Angle | operator- (Angle a, Angle d) noexcept |
Difference of two angles. More... | |
constexpr Angle | operator* (Angle a, Angle d) noexcept |
Product of two angles. More... | |
constexpr Angle | operator* (Angle a, double d) noexcept |
Product of an angle and a scalar. More... | |
constexpr Angle | operator- (Angle angle) |
An angle in the opposite sense. More... | |
constexpr Angle | operator/ (Angle a, int d) noexcept |
Ratio of an angle and a scalar. More... | |
constexpr Angle | operator/ (Angle a, double d) noexcept |
Ratio of an angle and a scalar. More... | |
std::ostream & | operator<< (std::ostream &s, Angle a) |
Print an Angle to a stream. More... | |
template<typename T > | |
constexpr Angle | operator* (T lhs, AngleUnit rhs) noexcept |
Use AngleUnit to convert a POD (e.g. int, double) to an Angle; e.g. 180*degrees. More... | |
A class representing an angle.
Angles may be manipulated like doubles, and automatically converted to doubles, but they may not be constructed from doubles without calling a constructor or multiplying by an AngleUnit. Angles can be modified only by assignment; all other operations that transform an Angle return a new Angle instead.
Unless otherwise specified, all methods and associated operators shall not throw exceptions.
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Copy constructor.
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Move constructor.
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Return an Angle's value in arcminutes.
Definition at line 175 of file Angle.h.
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Return an Angle's value in arcseconds.
Definition at line 178 of file Angle.h.
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Return an Angle's value in milliarcseconds.
Definition at line 181 of file Angle.h.
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Wrap this angle to the range [0, 2π).
Definition at line 403 of file Angle.h.
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Wrap this angle to the range [-π, π).
Definition at line 412 of file Angle.h.
Wrap this angle to a value x
such that -π ≤ x - refAng
≤ π, approximately.
refAng | reference angle to match |
x - refAng
in radians. The upper limit in radians and both limits in other units are somewhat squishy, due to roundoff error. Definition at line 431 of file Angle.h.
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related |
Print an Angle to a stream.
The exact details of the string representation are unspecified and subject to change, but the following may be regarded as typical: "0.567 rad"
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s | The output stream. |
a | The angle. |
Definition at line 29 of file Angle.cc.