org.ka2ddo.opentrac

Class OpenTracCourseSpeed

java.lang.Object

org.ka2ddo.opentrac.OpenTracElement

org.ka2ddo.opentrac.OpenTracCourseSpeed

All Implemented Interfaces:

java.io.Serializable

public class OpenTracCourseSpeed
extends OpenTracElement

This class represents an OpenTRAC data element with the course (degrees from True North) and speed (in 1/50th of a meter per second) of the described entity.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.ka2ddo.opentrac.OpenTracElement

id

Constructor Summary

Constructors

Constructor and Description
OpenTracCourseSpeed() Create an uninitialized OpenTracCourseSpeed element.
OpenTracCourseSpeed(int type, byte[] body, int offset, int length) Create an OpenTRAC element with a short value from the next series of bytes in an encoded OpenTRAC message.
OpenTracCourseSpeed(int course, double speedKTS)

Method Summary

Modifier and Type	Method and Description
int	computeBody(byte[] buf, int offset) Append this element to a message buffer
boolean	equalsElement(OpenTracElement other) Test if this OpenTracElement has the same type and value as another OpenTracElement.
int	getCourse() Get the course or bearing in degrees from True North.
double	getSpeedKPH() Get the speed of motion of the entity.
int	length() Return the number of bytes needed to encode this element.
java.lang.String	valueString() Get the string representation of the value of this element.

Methods inherited from class org.ka2ddo.opentrac.OpenTracElement

getId, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

OpenTracCourseSpeed

public OpenTracCourseSpeed()

Create an uninitialized OpenTracCourseSpeed element.

OpenTracCourseSpeed

public OpenTracCourseSpeed(int type,
                           byte[] body,
                           int offset,
                           int length)

Create an OpenTRAC element with a short value from the next series of bytes in an encoded OpenTRAC message.

Parameters:

type - OpenTRAC element type code

body - byte array containing the encoded OpenTRAC elements

offset - starting index in the array where this element begins

length - remaining number of bytes in the OpenTRAC encoded message

OpenTracCourseSpeed

public OpenTracCourseSpeed(int course,
                           double speedKTS)

Method Detail

valueString

public java.lang.String valueString()

Get the string representation of the value of this element.

Specified by:

valueString in class OpenTracElement

Returns:

value string

getCourse

public int getCourse()

Get the course or bearing in degrees from True North.

Returns:

bearing angle in integer degrees

getSpeedKPH

public double getSpeedKPH()

Get the speed of motion of the entity.

Returns:

speed in kilometers per hour

computeBody

public int computeBody(byte[] buf,
                       int offset)

Append this element to a message buffer

Specified by:

computeBody in class OpenTracElement

Parameters:

buf - byte array to add the element to

offset - starting index to store the element

Returns:

index after the end of the stored element

length

public int length()

Return the number of bytes needed to encode this element.

Specified by:

length in class OpenTracElement

Returns:

byte count needed to hold this element

equalsElement

public boolean equalsElement(OpenTracElement other)

Test if this OpenTracElement has the same type and value as another OpenTracElement.

Specified by:

equalsElement in class OpenTracElement

Parameters:

other - OpenTracElement to compare against this element

Returns:

boolean true if elements are of the same type, class, and value