astro::house::detail Namespace Reference

Enumerations
enum class	PlacidusCusp : uint8_t { TWO , THREE , ELEVEN , TWELVE }

Functions
auto	midheaven (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &obliquity) -> toolbox::AngleDeg
auto	antipode (const toolbox::AngleDeg &angle) -> toolbox::AngleDeg
	Return the opposite ecliptic direction, normalized to [0°, 360°).
auto	ascendant (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity) -> toolbox::AngleDeg
auto	placidus_equation (const double longitude_deg, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity, const PlacidusCusp cusp) -> double
	Evaluate one Placidus semi-arc equation on its continuous longitude branch.
auto	placidus_cusp (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity, const PlacidusCusp cusp, const std::size_t max_iterations=PLACIDUS_MAX_ITERATIONS) -> toolbox::AngleDeg
	Solve one Placidus cusp in degrees on the lifted semi-arc branch for the supplied house frame.
auto	placidus_cusps (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity, const toolbox::AngleDeg &ascendant, const toolbox::AngleDeg &midheaven) -> std::array< toolbox::AngleDeg, 12 >
	Construct twelve Placidus cusps; latitude must lie strictly inside the obliquity's polar circles.
auto	uniform_cusps (const toolbox::AngleDeg &first) -> std::array< toolbox::AngleDeg, 12 >
	Construct twelve 30-degree cusps from the first, each normalized to [0°, 360°).
auto	whole_sign_start (const toolbox::AngleDeg &ascendant) -> toolbox::AngleDeg
	Return the start of the 30-degree sign containing the Ascendant; an exact boundary starts that sign.
auto	axes (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity) -> Axes
	Resolve the horizon/ecliptic angles before any cusp construction.
auto	calculate (const toolbox::AngleDeg &armc, const toolbox::AngleDeg &latitude, const toolbox::AngleDeg &obliquity, const System system) -> Result
	Resolve axes before cusps, with a physical-obliquity check only for Placidus.
auto	validate (const double jd_ut1, const double jde_tt, const astro::GeoLocation &location) -> void
	Require finite UT1/TT times, nonpolar latitude and geographic longitude, in that order.

Variables
constexpr std::size_t	PLACIDUS_BRACKET_SEGMENTS
constexpr double	PLACIDUS_ROOT_TOLERANCE_DEG
constexpr std::size_t	PLACIDUS_MAX_ITERATIONS
constexpr double	ASCENDANT_ROUNDOFF_FACTOR

Enumeration Type Documentation

PlacidusCusp

enum class astro::house::detail::PlacidusCusp : uint8_t

strong

Enumerator
TWO
THREE
ELEVEN
TWELVE

Function Documentation

antipode()

auto astro::house::detail::antipode ( const toolbox::AngleDeg & angle ) ->toolbox::AngleDeg

inlinenodiscard

Return the opposite ecliptic direction, normalized to [0°, 360°).

ascendant()

auto astro::house::detail::ascendant ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity )->toolbox::AngleDeg

inlinenodiscard

See also

Jean Meeus, "Astronomical Algorithms", Second Edition, Chapter 14, Formulas (14.2)-(14.3).

axes()

auto astro::house::detail::axes ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity )->Axes

inlinenodiscard

Resolve the horizon/ecliptic angles before any cusp construction.

calculate()

auto astro::house::detail::calculate ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity, const System system )->Result

inlinenodiscard

Resolve axes before cusps, with a physical-obliquity check only for Placidus.

midheaven()

auto astro::house::detail::midheaven ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & obliquity )->toolbox::AngleDeg

inlinenodiscard

See also

Jean Meeus, "Astronomical Algorithms", Second Edition, Chapter 13, Formula (13.3), with β = 0.

placidus_cusp()

auto astro::house::detail::placidus_cusp ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity, const PlacidusCusp cusp, const std::size_t max_iterations = PLACIDUS_MAX_ITERATIONS )->toolbox::AngleDeg

inlinenodiscard

Solve one Placidus cusp in degrees on the lifted semi-arc branch for the supplied house frame.

Note

Accepts a small residual OR a small bracket, unlike the annual planetary crossing solver.

placidus_cusps()

auto astro::house::detail::placidus_cusps ( const toolbox::AngleDeg & armc, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity, const toolbox::AngleDeg & ascendant, const toolbox::AngleDeg & midheaven )->std::array< toolbox::AngleDeg, 12 >

inlinenodiscard

Construct twelve Placidus cusps; latitude must lie strictly inside the obliquity's polar circles.

placidus_equation()

auto astro::house::detail::placidus_equation ( const double longitude_deg, const toolbox::AngleDeg & latitude, const toolbox::AngleDeg & obliquity, const PlacidusCusp cusp )->double

inlinenodiscard

Evaluate one Placidus semi-arc equation on its continuous longitude branch.

See also

Swiss Ephemeris General Documentation, Section 6.2.1, "Placidus" (semi-arc definition) - https://www.astro.com/swisseph/swisseph.htm

uniform_cusps()

auto astro::house::detail::uniform_cusps ( const toolbox::AngleDeg & first ) ->std::array< toolbox::AngleDeg, 12 >

inlinenodiscard

Construct twelve 30-degree cusps from the first, each normalized to [0°, 360°).

validate()

auto astro::house::detail::validate ( const double jd_ut1, const double jde_tt, const astro::GeoLocation & location )->void

inline

Require finite UT1/TT times, nonpolar latitude and geographic longitude, in that order.

whole_sign_start()

auto astro::house::detail::whole_sign_start ( const toolbox::AngleDeg & ascendant ) ->toolbox::AngleDeg

inlinenodiscard

Return the start of the 30-degree sign containing the Ascendant; an exact boundary starts that sign.

Variable Documentation

ASCENDANT_ROUNDOFF_FACTOR

double astro::house::detail::ASCENDANT_ROUNDOFF_FACTOR

inlineconstexpr

PLACIDUS_BRACKET_SEGMENTS

std::size_t astro::house::detail::PLACIDUS_BRACKET_SEGMENTS

inlineconstexpr

PLACIDUS_MAX_ITERATIONS

std::size_t astro::house::detail::PLACIDUS_MAX_ITERATIONS

inlineconstexpr

PLACIDUS_ROOT_TOLERANCE_DEG

double astro::house::detail::PLACIDUS_ROOT_TOLERANCE_DEG

inlineconstexpr