periapsis::space Namespace Reference

Classes
class	atmosphere
class	body_rotator
	Base class for celestial body rotators. More...
class	celestial_body
	Base class for celestial bodies: stars, planets, asteroids, etc. More...
class	clipmap_ring
class	galaxy
class	gas_body
class	gas_body_atmosphere
class	keplerian_element_propagator
	Propagates using 6 Keplerian elements and rates:. More...
class	large_lithosphere
class	large_rocky_body
class	lithosphere
class	lithosphere_qt_node
	Quadtree nodes for the lithosphere quadtree. More...
class	lithosphere_quadtree
	A quadtree used for drawing planetary lithospheres. More...
struct	major_planet_rec
class	major_planet_rotator
class	orbital_frame
	A base class for those frames whose location and velocity is specified by orbital elements. More...
class	planet_earth
class	planet_system
	A planetary system, with its origin at the barycentre of the planet and its satellites. More...
class	propagator
	Base class for orbital propagators. More...
class	rocky_body_atmosphere
class	rotating_body
	Implements bodies that are rotated using a body_rotator. More...
class	satellite_element_propagator
	Propagates using satellite elements:. More...
class	scenery_patch_set
	A dummy node that holds texture and height data for a planetary surface. More...
class	ship1
class	solar_system
class	space_context
class	spacecraft
class	spacecraft_module
class	sph_qt_node
	Base class for quadtree nodes. More...
class	spherical_clipmap
class	spherical_quadtree
	A class that maintains and draws LOD spheroids. More...
class	star
class	stellar_db
Namespaces
namespace	rotator
Functions
	BROKER_DEFINE_CREATOR (periapsis::space::stellar_db)
	BROKER_DEFINE_CREATOR (periapsis::space::star)
	BROKER_DEFINE_CREATOR (periapsis::space::spacecraft)
	BROKER_DEFINE_CREATOR (periapsis::space::solar_system)
	BROKER_DEFINE_CREATOR (periapsis::space::ship1)
	BROKER_DEFINE_CREATOR (periapsis::space::scenery_patch_set)
	BROKER_DEFINE_CREATOR (periapsis::space::satellite_element_propagator)
	BROKER_DEFINE_CREATOR (periapsis::space::planet_system)
	BROKER_DEFINE_CREATOR (periapsis::space::large_rocky_body)
	BROKER_DEFINE_CREATOR (periapsis::space::keplerian_element_propagator)
	BROKER_DEFINE_CREATOR (periapsis::space::gas_body)
	BROKER_DEFINE_CREATOR (periapsis::space::galaxy)
	BROKER_DEFINE_CREATOR (periapsis::space::planet_earth)
Geographic Coordinates
void	geocentric_to_geographic (const gsgl::real_t &polar_radius, const gsgl::real_t &equatorial_radius, const gsgl::real_t &x, const gsgl::real_t &y, const gsgl::real_t &z, gsgl::real_t &lat, gsgl::real_t &lon, gsgl::real_t &alt)
	Converts from geocentric cartesian coordinates to geographic polar coordinates.
void	geographic_to_geocentric (const gsgl::real_t &polar_radius, const gsgl::real_t &equatorial_radius, const gsgl::real_t &lat, const gsgl::real_t &lon, const gsgl::real_t &alt, gsgl::real_t &x, gsgl::real_t &y, gsgl::real_t &z)
	Converts from geographic polar coordinates to geocentric cartesian coordinates.
Variables
gsgl::real_t	eq_wrt_ec_pre_mult []
	Also from the Hipparcos data paper; the pre-multiplicative orientation of the orientation of the equatorial frame wrt. the ecliptic.
double	J2000 = 2451545.0
Coordinate System Transforms
Note that these are for the usual OpenGL setup where transforms are done by multiplying the matrix by the vector to transform.
transform	ECLIPTIC_WRT_EQUATORIAL (eq_wrt_ec_pre_mult)
transform	ECLIPTIC_WRT_GALACTIC = EQUATORIAL_WRT_GALACTIC * ECLIPTIC_WRT_EQUATORIAL
transform	EQUATORIAL_WRT_ECLIPTIC = ECLIPTIC_WRT_EQUATORIAL.transpose()
transform	EQUATORIAL_WRT_GALACTIC = GALACTIC_WRT_EQUATORIAL.transpose()
transform	GALACTIC_WRT_ECLIPTIC = ECLIPTIC_WRT_GALACTIC.transpose()
transform	GALACTIC_WRT_EQUATORIAL (eq_wrt_gal_pre_mult)

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Function Documentation

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::stellar_db

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::star

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::spacecraft

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::solar_system

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::ship1

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::scenery_patch_set

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::satellite_element_propagator

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::planet_system

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::large_rocky_body

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::keplerian_element_propagator

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::gas_body

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::galaxy

)

periapsis::space::BROKER_DEFINE_CREATOR

(

periapsis::space::planet_earth

)

void SPACE_API geocentric_to_geographic	(	const gsgl::real_t &	polar_radius,
		const gsgl::real_t &	equatorial_radius,
		const gsgl::real_t &	x,
		const gsgl::real_t &	y,
		const gsgl::real_t &	z,
		gsgl::real_t &	lat,
		gsgl::real_t &	lon,
		gsgl::real_t &	alt
	)

Converts from geocentric cartesian coordinates to geographic polar coordinates.

This function is much more expensive than its inverse, so use sparingly...

Parameters:

	polar_radius	The polar radius of the planet.
	equatorial_radius	The equatorial radius of the planet.
	x	The x coordinate.
	y	The y coordinate.
	z	The z coordinate.
	lat	The resulting geodedic latitude.
	lon	The resulting geodedic longitude.
	alt	The altitude above the surface of the earth.

Definition at line 117 of file astronomy.cpp.

void SPACE_API geographic_to_geocentric	(	const gsgl::real_t &	polar_radius,
		const gsgl::real_t &	equatorial_radius,
		const gsgl::real_t &	lat,
		const gsgl::real_t &	lon,
		const gsgl::real_t &	alt,
		gsgl::real_t &	x,
		gsgl::real_t &	y,
		gsgl::real_t &	z
	)

Converts from geographic polar coordinates to geocentric cartesian coordinates.

Parameters:

	polar_radius	The polar radius of the planet.
	equatorial_radius	The equatorial radius of the planet.
	lat	The geodedic latitude.
	lon	The geodedic longitude.
	alt	The altitude above the planet.
	x	The resulting x coordinate.
	y	The resulting y coordinate.
	z	The resulting z coordinate.

Definition at line 144 of file astronomy.cpp.

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Variable Documentation

SPACE_API gsgl::math::transform ECLIPTIC_WRT_EQUATORIAL

Definition at line 57 of file astronomy.hpp.

SPACE_API gsgl::math::transform ECLIPTIC_WRT_GALACTIC = EQUATORIAL_WRT_GALACTIC * ECLIPTIC_WRT_EQUATORIAL

Definition at line 111 of file astronomy.cpp.

Referenced by solar_system::solar_system().

gsgl::real_t eq_wrt_ec_pre_mult[]

Initial value:

 
        {
            1.0f,
            0.0f,
            0.0f,
            0.0f,

            0.0f,
            0.9174820621f,
            0.3977771559f,
            0.0f,

            0.0f,
            -0.3977771559f,
            0.9174820621f,
            0.0f,

            0.0f,
            0.0f,
            0.0f,
            1.0f
        }

Also from the Hipparcos data paper; the pre-multiplicative orientation of the orientation of the equatorial frame wrt. the ecliptic.

Definition at line 81 of file astronomy.cpp.

SPACE_API gsgl::math::transform EQUATORIAL_WRT_ECLIPTIC = ECLIPTIC_WRT_EQUATORIAL.transpose()

Definition at line 106 of file astronomy.cpp.

Referenced by body_rotator::calc_orientation_aux(), and planet_system::draw().

SPACE_API gsgl::math::transform EQUATORIAL_WRT_GALACTIC = GALACTIC_WRT_EQUATORIAL.transpose()

Definition at line 76 of file astronomy.cpp.

Referenced by stellar_db::load_db().

SPACE_API gsgl::math::transform GALACTIC_WRT_ECLIPTIC = ECLIPTIC_WRT_GALACTIC.transpose()

Definition at line 112 of file astronomy.cpp.

SPACE_API gsgl::math::transform GALACTIC_WRT_EQUATORIAL

Definition at line 55 of file astronomy.hpp.

SPACE_API double J2000 = 2451545.0

Definition at line 46 of file astronomy.cpp.

Referenced by moon::calc_orientation(), major_planet_rotator::calc_orientation(), jupiter_rotator::calc_orientation_pre(), and mars_rotator::calc_orientation_pre().