com.luciad.ais.geodesy

Aviation StandardsClass TLcdForwardAzimuthUtil

java.lang.Object

com.luciad.ais.geodesy.TLcdForwardAzimuthUtil

public class TLcdForwardAzimuthUtil
extends Object

Class containing utility methods for handling forward azimuths.

Constructor Summary

Constructors

Constructor and Description
TLcdForwardAzimuthUtil()

Method Summary

Modifier and Type	Method and Description
static double	forwardAzimuth2ArcAngle(double aForwardAzimuth) Convert a forward azimuth (0 is North, clockwise) to an angle value that can be used for an ILcdArc (0 is East, counter-clockwise).
static double	forwardAzimuthDelta2ArcDelta(double aAzimuth1, double aAzimuth2) Convert the difference between two forward azimuths (0 is north, clockwise) to an arc size that can be used for painting (0 is east, counter-clockwise).
static double	forwardAzimuthDelta2ArcDelta(double aAzimuth1, double aAzimuth2, boolean aClockwise) Convert the difference between to forward azimuths (0 is north, clockwise) to an arc size that can be used for painting (0 is east, counter-clockwise).
static double	getForwardAzimuthDelta(double aAzimuth1, double aAzimuth2) Returns the difference (in degrees) between two forward azimuths.
static boolean	isForwardAzimuthClockwise(double aFa1, double aFa2) Return true if a turn from forward azimuth 1 to 2 goes in clockwise direction.
static double	normalizeForwardAzimuth(double aForwardAzimuth) Normalize a given forward azimuth: the result is always in the interval [0;360[.

Methods inherited from class java.lang.Object

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

Constructor Detail

TLcdForwardAzimuthUtil

public TLcdForwardAzimuthUtil()

Method Detail

isForwardAzimuthClockwise

public static boolean isForwardAzimuthClockwise(double aFa1,
                                                double aFa2)

Return true if a turn from forward azimuth 1 to 2 goes in clockwise direction.

Parameters:

aFa1 - Forward azimuth 1 (degrees).

aFa2 - Forward azimuth 2 (degrees).

Returns:

true if a turn from forward azimuth 1 to 2 goes in clockwise direction.

forwardAzimuthDelta2ArcDelta

public static double forwardAzimuthDelta2ArcDelta(double aAzimuth1,
                                                  double aAzimuth2)

Convert the difference between two forward azimuths (0 is north, clockwise) to an arc size that can be used for painting (0 is east, counter-clockwise). The result is in the interval ]-180;180] degrees.

Parameters:

aAzimuth1 - First forward azimuth (degrees).

aAzimuth2 - Second forward azimuth (degrees).

Returns:

Difference between the two azimuths, normalized to the interval ]-180;180] degrees.

forwardAzimuthDelta2ArcDelta

public static double forwardAzimuthDelta2ArcDelta(double aAzimuth1,
                                                  double aAzimuth2,
                                                  boolean aClockwise)

Convert the difference between to forward azimuths (0 is north, clockwise) to an arc size that can be used for painting (0 is east, counter-clockwise). The result is an arc that goes from the first azimuth to the second in the given direction: clockwise if aClockwise == true, counter-clockwise otherwise.

Parameters:

aAzimuth1 - First forward azimuth (degrees).

aAzimuth2 - Second forward azimuth (degrees).

aClockwise - True to return an arc in clockwise direction.

Returns:

Angle difference between the two given azimuths, taking into account the given direction (clockwise/counter-clockwise).

normalizeForwardAzimuth

public static double normalizeForwardAzimuth(double aForwardAzimuth)

Normalize a given forward azimuth: the result is always in the interval [0;360[.

Parameters:

aForwardAzimuth - Azimuth to normalize (degrees).

Returns:

An angle in the range [0;360[.

forwardAzimuth2ArcAngle

public static double forwardAzimuth2ArcAngle(double aForwardAzimuth)

Convert a forward azimuth (0 is North, clockwise) to an angle value that can be used for an ILcdArc (0 is East, counter-clockwise).

Parameters:

aForwardAzimuth - Given forward azimuth (degrees).

Returns:

Angle value that can be used for an ILcdArc.

getForwardAzimuthDelta

public static double getForwardAzimuthDelta(double aAzimuth1,
                                            double aAzimuth2)

Returns the difference (in degrees) between two forward azimuths. The return value is unsigned!