Package gaiasky.data.orbit

Class HeliotropicOrbitDataLoader

java.lang.Object

gaiasky.data.orbit.HeliotropicOrbitDataLoader

public class HeliotropicOrbitDataLoader
extends Object

Constructor Summary

Constructors

Constructor	Description
HeliotropicOrbitDataLoader()

Method Summary

Modifier and Type	Method	Description
protected Vector3d	correctSunLongitude(Vector3d pos, Instant t)	Transforms the given vector to a heliotropic system using the given time.
protected Vector3d	correctSunLongitude(Vector3d pos, Instant t, float origin)	Transforms the given vector to a heliotropic system using the given time.
PointCloudData	load(InputStream data)	Loads the data in the input stream and transforms it into Cartesian ecliptic coordinates.
static void	main(String[] args)
protected double	parsed(String str)
protected float	parsef(String str)
protected int	parsei(String str)
void	writeDistVsTimeData(String filePath, PointCloudData data)	Writes a file under the given path with the distance data

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

HeliotropicOrbitDataLoader

public HeliotropicOrbitDataLoader()

Method Details

main

public static void main(String[] args)

load

public PointCloudData load(InputStream data)
                    throws Exception

Loads the data in the input stream and transforms it into Cartesian ecliptic coordinates. The reference system of the data goes as follows:

• Origin of frame : Earth
• X and Y axis in the EQUATORIAL PLANE with X pointing in the direction of vernal equinox.
• Z perpendicular to the the EQUATORIAL PLANE in the north direction
• The Y direction is defined to have (X,Y,Z) as a "three axis" positively oriented.

The simulation reference system:

• - XZ lies in the ECLIPTIC PLANE, with Z pointing to the vernal equinox.
• - Y perpendicular to the ECLIPTIC PLANE pointing north.

Parameters:

data - The input stream with the data to load

Throws:

Exception

parsef

protected float parsef(String str)

parsed

protected double parsed(String str)

parsei

protected int parsei(String str)

correctSunLongitude

protected Vector3d correctSunLongitude(Vector3d pos,
 Instant t)

Transforms the given vector to a heliotropic system using the given time.

Parameters:

pos - Position vector

t - Time

Returns:

Vector3 with the position in the heliotropic reference frame

correctSunLongitude

protected Vector3d correctSunLongitude(Vector3d pos,
 Instant t,
 float origin)

Transforms the given vector to a heliotropic system using the given time.

Parameters:

pos - Position vector

t - Time

origin - The origin angle

Returns:

Vector3 with the position in the heliotropic reference frame

writeDistVsTimeData

public void writeDistVsTimeData(String filePath,
 PointCloudData data)
                         throws Exception

Writes a file under the given path with the distance data

Throws:

Exception