Package robocode.util
Class Utils
java.lang.Object
robocode.util.Utils
Utility class that provide methods for normalizing angles.
- Author:
- Mathew A. Nelson (original), Flemming N. Larsen (contributor)
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Field Summary
Fields -
Method Summary
Modifier and TypeMethodDescriptionstatic Random
Returns random number generator.static boolean
isNear
(double value1, double value2) Tests if the twodouble
values are near to each other.static double
normalAbsoluteAngle
(double angle) Normalizes an angle to an absolute angle.static double
normalAbsoluteAngleDegrees
(double angle) Normalizes an angle to an absolute angle.static double
normalNearAbsoluteAngle
(double angle) Normalizes an angle to be near an absolute angle.static double
normalNearAbsoluteAngleDegrees
(double angle) Normalizes an angle to be near an absolute angle.static double
normalRelativeAngle
(double angle) Normalizes an angle to a relative angle.static double
normalRelativeAngleDegrees
(double angle) Normalizes an angle to a relative angle.
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Field Details
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NEAR_DELTA
public static final double NEAR_DELTA- See Also:
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Method Details
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normalAbsoluteAngle
public static double normalAbsoluteAngle(double angle) Normalizes an angle to an absolute angle. The normalized angle will be in the range from 0 to 2*PI, where 2*PI itself is not included.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [0,2*PI[
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normalAbsoluteAngleDegrees
public static double normalAbsoluteAngleDegrees(double angle) Normalizes an angle to an absolute angle. The normalized angle will be in the range from 0 to 360, where 360 itself is not included.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [0,360[
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normalRelativeAngle
public static double normalRelativeAngle(double angle) Normalizes an angle to a relative angle. The normalized angle will be in the range from -PI to PI, where PI itself is not included.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [-PI,PI[
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normalRelativeAngleDegrees
public static double normalRelativeAngleDegrees(double angle) Normalizes an angle to a relative angle. The normalized angle will be in the range from -180 to 180, where 180 itself is not included.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [-180,180[
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normalNearAbsoluteAngleDegrees
public static double normalNearAbsoluteAngleDegrees(double angle) Normalizes an angle to be near an absolute angle. The normalized angle will be in the range from 0 to 360, where 360 itself is not included. If the normalized angle is near to 0, 90, 180, 270 or 360, that angle will be returned. TheisNear
method is used for defining when the angle is near one of angles listed above.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [0,360[
- See Also:
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normalNearAbsoluteAngle
public static double normalNearAbsoluteAngle(double angle) Normalizes an angle to be near an absolute angle. The normalized angle will be in the range from 0 to 2*PI, where 2*PI itself is not included. If the normalized angle is near to 0, PI/2, PI, 3*PI/2 or 2*PI, that angle will be returned. TheisNear
method is used for defining when the angle is near one of angles listed above.- Parameters:
angle
- the angle to normalize- Returns:
- the normalized angle that will be in the range of [0,2*PI[
- See Also:
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isNear
public static boolean isNear(double value1, double value2) Tests if the twodouble
values are near to each other. It is recommended to use this method instead of testing if the two doubles are equal using an this expression:value1 == value2
. The reason being, that this expression might never becometrue
due to the precision of double values. Whether or not the specified doubles are near to each other is defined by the following expression:(Math.abs(value1 - value2) < .00001)
- Parameters:
value1
- the first double valuevalue2
- the second double value- Returns:
true
if the two doubles are near to each other;false
otherwise.
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getRandom
Returns random number generator. It might be configured for repeatable behavior by setting -DRANDOMSEED option.- Returns:
- random number generator
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