Collection of useful utilities for Java games and apps. A lot of interesting utilities that could maybe still find some use if you work with Java...
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mightyutils/src/mightypork/utils/math/angles/Rad.java

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package mightypork.utils.math.angles;
/**
* Angle calculations for radians.
*
* @author Ondřej Hruška (MightyPork)
*/
public class Rad {
/** 180° in radians */
public static final double a180 = Math.PI;
/** 270° in radians */
public static final double a270 = Math.PI * 1.5D;
/** 360° in radians */
public static final double a360 = Math.PI * 2D;
/** 45° in radians */
public static final double a45 = Math.PI / 4D;
/** 90° in radians */
public static final double a90 = Math.PI / 2D;
/**
* Subtract two angles alpha - beta
*
* @param alpha first angle
* @param beta second angle
* @return (alpha - beta) in radians
*/
public static double delta(double alpha, double beta)
{
return Angles.delta(alpha, beta, a360);
}
/**
* Difference of two angles (absolute value of delta)
*
* @param alpha first angle
* @param beta second angle
* @return difference in radians
*/
public static double diff(double alpha, double beta)
{
return Angles.delta(alpha, beta, a360);
}
/**
* Cos
*
* @param rad angle in rads
* @return cos
*/
public static double cos(double rad)
{
return Math.cos(rad);
}
/**
* Sin
*
* @param rad angle in rads
* @return sin
*/
public static double sin(double rad)
{
return Math.sin(rad);
}
/**
* Tan
*
* @param rad angle in rads
* @return tan
*/
public static double tan(double rad)
{
return Math.tan(rad);
}
/**
* Angle normalized to 0-2*PI range
*
* @param angle angle to normalize
* @return normalized angle
*/
public static double norm(double angle)
{
return Angles.norm(angle, a360);
}
/**
* Convert to degrees
*
* @param rad radians
* @return degrees
*/
public static double toDeg(double rad)
{
return Math.toDegrees(rad);
}
}