videoRangePanel
Class VRRangeMethod

java.lang.Object
  videoRangePanel.VRRangeMethod

Direct Known Subclasses:

RoundEarthMethod

abstract class VRRangeMethod
extends java.lang.Object

Field Summary

protected static double	earthRadius
protected static double	gravity

Constructor Summary

VRRangeMethod()

Method Summary

(package private) abstract void	configure()
(package private) abstract RangeDialogPanel	dialogPanel()
(package private) abstract double	getAngle(double height, double range) Converts a range into an angle below the horizon.
protected double	getHorizonAngle(double height) Calculate the horizon dip angle from the horizontal
abstract double	getHorizonDistance(double height) Calculate the distance to the horizon from a given height.
(package private) abstract java.lang.String	getName()
(package private) abstract double	getRange(double height, double angle) Converts a height and an angle below the horizon to a distance in metres.

Methods inherited from class java.lang.Object

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

Field Detail

earthRadius

protected static final double earthRadius

See Also:

Constant Field Values

gravity

protected static final double gravity

See Also:

Constant Field Values

Constructor Detail

VRRangeMethod

VRRangeMethod()

Method Detail

getRange

abstract double getRange(double height,
                         double angle)

Converts a height and an angle below the horizon to a distance in metres.

Parameters:

height - platform height (metres)

angle - angle below the horizon (radians)

Returns:

distance in metres.

getAngle

abstract double getAngle(double height,
                         double range)

Converts a range into an angle below the horizon.

Or returns -1 if the range is beyond the horizon.

Parameters:

height - platofrm height (metres)

range - range to object.

Returns:

angle in radians.

configure

abstract void configure()

dialogPanel

abstract RangeDialogPanel dialogPanel()

getName

abstract java.lang.String getName()

getHorizonAngle

protected double getHorizonAngle(double height)

Calculate the horizon dip angle from the horizontal

Parameters:

height - Platform height

Returns:

dip angle in radians.

getHorizonDistance

public abstract double getHorizonDistance(double height)

Calculate the distance to the horizon from a given height.

Parameters:

height -

Returns:

distnace to horizon in metres.