User Manual 4.6 Celestial bodies - Historique des versions

Admin : /* Available methods */

2020-10-05T12:48:47Z

Available methods

← Version précédente		Version du 5 octobre 2020 à 12:48
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	===== Available methods =====		===== Available methods =====

			Noe that most methods return <b>exact</b> results. For example, <code>distanceTo</code> methods returns exact distance to mesh body. Only <code>transform()</code> and <code>getLocalRadius()</code> methods simplify the mesh in a one axis ellipsoid.

	<code>FacetCelestialBody</code> provides the following methods:		<code>FacetCelestialBody</code> provides the following methods:
	* <code>getIntersection(final Line line, final Vector3D close, final Frame frame, final AbsoluteDate date)</code> and similar which returns an <code>Intersection</code> object.This object contains the intersection point as well as the <code>Triangle</code> containing the intersection point. This method is recursive and is in O(log(n)).		* <code>getIntersection(final Line line, final Vector3D close, final Frame frame, final AbsoluteDate date)</code> and similar which returns an <code>Intersection</code> object.This object contains the intersection point as well as the <code>Triangle</code> containing the intersection point. This method is recursive and is in O(log(n)).
	* <code>transform()</code> methods which converts a point or a geodetic point using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body.		* <code>transform()</code> methods which converts a point or a geodetic point using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body.
			* <code>getLocalRadius()</code> methods which provides the local radius from an object and an occulted body using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body. This method is to be used only by <code>EclipseDetector</code>.
	* <code>distanceTo()</code> method which returns the distance to the body. This method is recursive and is hence in O(log(n)).		* <code>distanceTo()</code> method which returns the distance to the body. This method is recursive and is hence in O(log(n)).
	* <code>getNeighbors()</code> methods which returns the neighbors triangles to:		* <code>getNeighbors()</code> methods which returns the neighbors triangles to:

Admin : /* Available methods */

2020-10-05T12:44:30Z

Available methods

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	** Contour of the seen triangles. Contour is strictly contained in the field of view		** Contour of the seen triangles. Contour is strictly contained in the field of view
	If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.		If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.
	* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.		* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account. This method is in O(log(n)).
	* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.		* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method. This method is in O((n)).
	* <code>getNeverEnlightenedTriangles()</code> which returns a list of facets which are never enlightened by the Sun. Visibility criteria is the same as for <code>getFieldData()</code> method.		* <code>getNeverEnlightenedTriangles()</code> which returns a list of facets which are never enlightened by the Sun. Visibility criteria is the same as for <code>getFieldData()</code> method. This method is in O((n)).
	* <code>getVisibleAndEnlightenedTriangles()</code> which returns a list of facets which are visible and enlightened at the same time, at least once on the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.		* <code>getVisibleAndEnlightenedTriangles()</code> which returns a list of facets which are visible and enlightened at the same time, at least once on the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method. This method is in O((n)).

	==== GeodeticPoint ====		==== GeodeticPoint ====

Admin : /* Available methods */

2020-10-05T12:43:24Z

Available methods

← Version précédente		Version du 5 octobre 2020 à 12:43
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	** A point or a triangle given a "neighborhood distance"		** A point or a triangle given a "neighborhood distance"
	** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.		** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.
	This method is recursive and is hence in O(log(n)).		This method is recursive and is hence in O(log(n)).
	* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.		* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.
	* <code>getFieldData()</code> which returns a container <code>FieldData</code> containing data related to the field of view:		* <code>getFieldData()</code> which returns a container <code>FieldData</code> containing data related to the field of view:
	** Visible triangles from the satellite field of view <code>IFieldOfView</code>. A visible triangle must be entirely in the field of view and not masked by any other triangle.		** Visible triangles from the satellite field of view <code>IFieldOfView</code>. A visible triangle must be entirely in the field of view and not masked by any other triangle.
	** Contour of the seen triangles. Contour is strictly contained in the field of view		** Contour of the seen triangles. Contour is strictly contained in the field of view
	If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.		If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.
	* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.		* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.
	* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.		* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.

Admin : /* Available methods */

2020-10-05T12:42:22Z

Available methods

← Version précédente		Version du 5 octobre 2020 à 12:42
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	** A point or a triangle given a "neighborhood distance"		** A point or a triangle given a "neighborhood distance"
	** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.		** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.
	This method is recursive and is hence in O(log(n)).		This method is recursive and is hence in O(log(n)).
	* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.		* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.
	* <code>getFieldData()</code> which returns a container <code>FieldData</code> containing data related to the field of view:		* <code>getFieldData()</code> which returns a container <code>FieldData</code> containing data related to the field of view:
	** Visible triangles from the satellite field of view <code>IFieldOfView</code>. A visible triangle must be entirely in the field of view and not masked by any other triangle.		** Visible triangles from the satellite field of view <code>IFieldOfView</code>. A visible triangle must be entirely in the field of view and not masked by any other triangle.
	** Contour of the seen triangles. Contour is strictly contained in the field of view		** Contour of the seen triangles. Contour is strictly contained in the field of view
	If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.		If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.
	* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.		* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.
	* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.		* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.

Admin : /* Facet celestial body */

2020-10-05T12:41:12Z

Facet celestial body

← Version précédente		Version du 5 octobre 2020 à 12:41
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	This method is recursive and is hence in O(log(n)).		This method is recursive and is hence in O(log(n)).
	* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.		* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.
	* <code>getFieldData()</code> which returns data related to the field of view:		* <code>getFieldData()</code> which returns a container <code>FieldData</code> containing data related to the field of view:
	** Visible triangles. A visible triangle must be entirely in the field of view and not masked by any other triangle.		** Visible triangles from the satellite field of view <code>IFieldOfView</code>. A visible triangle must be entirely in the field of view and not masked by any other triangle.
	** Contour of the seen triangles. Contour is strictly contained in the field of view		** Contour of the seen triangles. Contour is strictly contained in the field of view
	If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.		If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.

Admin : /* Facet celestial body */

2020-10-05T12:40:01Z

Facet celestial body

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	<code>FacetCelestialBody</code> provides the following methods:		<code>FacetCelestialBody</code> provides the following methods:
	* <code>getIntersection(final Line line, final Vector3D close, final Frame frame, final AbsoluteDate date)</code> and similar which returns an <code>Intersection</code> object.This object contains the intersection point as well as the <code>Triangle</code> containing the intersection point. This method is recursive and is in O(log(n)).		* <code>getIntersection(final Line line, final Vector3D close, final Frame frame, final AbsoluteDate date)</code> and similar which returns an <code>Intersection</code> object.This object contains the intersection point as well as the <code>Triangle</code> containing the intersection point. This method is recursive and is in O(log(n)).
	* <code>transform()</code> methods which ~~convert~~ a point or a geodetic point using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body.		* <code>transform()</code> methods which converts a point or a geodetic point using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body.
	* <code>distanceTo()</code> method which returns the distance to the body. This method is recursive and is hence in O(log(n)).		* <code>distanceTo()</code> method which returns the distance to the body. This method is recursive and is hence in O(log(n)).
	* <code>getNeighbors()</code> methods returns the neighbors triangles to:		* <code>getNeighbors()</code> methods which returns the neighbors triangles to:
	** A point or a triangle given a "neighborhood distance"		** A point or a triangle given a "neighborhood distance"
	** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.		** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.
	This method is recursive and is hence in O(log(n)).		This method is recursive and is hence in O(log(n)).
	*		* <code>getSurfacePointedDataEphemeris()</code> method which returns for each provided <code>SpacecraftState</code> a container <code>SurfacePointedData</code>, containing all pointed surface-related data.
			* <code>getFieldData()</code> which returns data related to the field of view:
			** Visible triangles. A visible triangle must be entirely in the field of view and not masked by any other triangle.
			** Contour of the seen triangles. Contour is strictly contained in the field of view
			If main direction of the field of view is provided, this method is recursive and is in O(log(n)). Otherwise, it is in O(n) and is much slower.
			* <code>isInEclipse()</code> method which returns true if the satellite is currently in eclipse, false otherwise. Penumbra is not taken into account.
			* <code>getNeverVisibleTriangles()</code> which returns a list of facets which are never visible from the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.
			* <code>getNeverEnlightenedTriangles()</code> which returns a list of facets which are never enlightened by the Sun. Visibility criteria is the same as for <code>getFieldData()</code> method.
			* <code>getVisibleAndEnlightenedTriangles()</code> which returns a list of facets which are visible and enlightened at the same time, at least once on the provided ephemeris. Visibility criteria is the same as for <code>getFieldData()</code> method.

	==== GeodeticPoint ====		==== GeodeticPoint ====

Admin : /* Facet celestial body */

2020-10-05T12:29:05Z

Facet celestial body

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	<code>FacetCelestialBody</code> is a class used to define a celestial body as a mesh. This is particularly useful for small irregular bodies such as asteroids.		<code>FacetCelestialBody</code> is a class used to define a celestial body as a mesh. This is particularly useful for small irregular bodies such as asteroids.
	For example, Phobos:		For example, Phobos contains here 100 000 vertices and 200 000 facets:
	[[File:Phobos.jpg\|center]]		[[File:Phobos.jpg\|center]]

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	* Inherits the <code>GeometricBodyShape</code> interface and hence can be used together with <code>EclipseDetector</code> and <code>SensorModel</code>.		* Inherits the <code>GeometricBodyShape</code> interface and hence can be used together with <code>EclipseDetector</code> and <code>SensorModel</code>.
	* Inherits the <code>CelestialBody</code> interface and hence can be used as any celestial bodies with classes such as <code>ThirdBodyAttraction</code>, <code>SunPointing</code> and event detectors.		* Inherits the <code>CelestialBody</code> interface and hence can be used as any celestial bodies with classes such as <code>ThirdBodyAttraction</code>, <code>SunPointing</code> and event detectors.
	* Provides some useful and optimised methods for small body handling.		* Provides some useful and optimised methods for small body handling. Facets are connected to each other allowing some methods to be writen in a recursive or iterative way and hence being very fast. If <i>n</i> is the number of vertices of the body, fast recursive or iterative methods are in O(log(n)).

	===== Mesh provider =====		===== Mesh provider =====
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	* <code>ObjMeshLoader</code>: in this case, the mesh is provided under official .obj file format. See [https://en.wikipedia.org/wiki/Wavefront_.obj_file This page] for more information on the format.		* <code>ObjMeshLoader</code>: in this case, the mesh is provided under official .obj file format. See [https://en.wikipedia.org/wiki/Wavefront_.obj_file This page] for more information on the format.
	* <code>GeodeticMeshLoader</code>: in this case, the mesh is provided in an ASCII column file listing each vertex in the format [Latitude Longitude Altitude].		* <code>GeodeticMeshLoader</code>: in this case, the mesh is provided in an ASCII column file listing each vertex in the format [Latitude Longitude Altitude].

			===== Available methods =====

			<code>FacetCelestialBody</code> provides the following methods:
			* <code>getIntersection(final Line line, final Vector3D close, final Frame frame, final AbsoluteDate date)</code> and similar which returns an <code>Intersection</code> object.This object contains the intersection point as well as the <code>Triangle</code> containing the intersection point. This method is recursive and is in O(log(n)).
			* <code>transform()</code> methods which convert a point or a geodetic point using <b>reference ellipsoid</b>. Reference ellipsoid is the closest one axis ellipsoid to the body.
			* <code>distanceTo()</code> method which returns the distance to the body. This method is recursive and is hence in O(log(n)).
			* <code>getNeighbors()</code> methods returns the neighbors triangles to:
			** A point or a triangle given a "neighborhood distance"
			** A triangle given a "neighborhood order". In this case, order 1 returns the immediate neighbors of the triangles, order 2 returns also the neighbors' neighbors and so on.
			This method is recursive and is hence in O(log(n)).
			*

	==== GeodeticPoint ====		==== GeodeticPoint ====

Admin : /* Facet celestial body */

2020-10-05T12:18:28Z

Facet celestial body

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	A mesh is described by a list of facets <code>Triangle</code> and or vertices <code>Vertex</code>. A <code>Triangle</code> contains three vertices.		A mesh is described by a list of facets <code>Triangle</code> and or vertices <code>Vertex</code>. A <code>Triangle</code> contains three vertices.
	Mesh is provided by the generic interface <code>MeshProvider</code>. This interface currently possesses two implementation:		Mesh is provided by the generic interface <code>MeshProvider</code>. This interface currently possesses two implementation:
	* <code>ObjMeshLoader</code>: in this case, the mesh is provided under official .obj file format. See [https://en.wikipedia.org/wiki/Wavefront_.obj_file\|This page] for more information on the format.		* <code>ObjMeshLoader</code>: in this case, the mesh is provided under official .obj file format. See [https://en.wikipedia.org/wiki/Wavefront_.obj_file This page] for more information on the format.
	* <code>GeodeticMeshLoader</code>: in this case, the mesh is provided in an ASCII column file listing each vertex in the format [Latitude Longitude Altitude].		* <code>GeodeticMeshLoader</code>: in this case, the mesh is provided in an ASCII column file listing each vertex in the format [Latitude Longitude Altitude].

Admin : /* Facet celestial body */

2020-10-05T12:15:02Z

Facet celestial body

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 ==== Facet celestial body ====
-TODO
+<code>FacetCelestialBody</code> is a class used to define a celestial body as a mesh. This is particularly useful for small irregular bodies such as asteroids.
 ==== GeodeticPoint ====

Admin : /* Interfaces */

2020-10-05T12:12:59Z

Interfaces

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	\|-		\|-
	\|'''MeshLoader'''		\|'''MeshLoader'''
	\|Interface for FacetCelestialBody mesh ~~loader~~.		\|Interface for FacetCelestialBody mesh provider.
	\|[{{JavaDoc4.6}}/fr/cnes/sirius/patrius/bodies/mesh/~~MeshLoader~~.html ...]		\|[{{JavaDoc4.6}}/fr/cnes/sirius/patrius/bodies/mesh/MeshProvider.html ...]
	\|}		\|}

User Manual 4.6 Celestial bodies - Historique des versions

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Interfaces */

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Available methods */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Facet celestial body */

Admin : /* Interfaces */