Package org.lazywizard.lazylib

Class FastTrig

Object
FastTrig
public class FastTrig extends Object
Math utility class that trades accuracy for speed, often returning several times faster than Math's equivalent functions.
Since:
1.0
Author:
Various (see javadoc of individual methods for attributions)

  • Method Summary

    Modifier and Type
    Method
    Description
    static double
    atan(double z)
    Returns the arc tangent of a value.
    static double
    atan2(double y, double x)
    Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta).
    static double
    cos(double radians)
    Get the cosine of an angle.
    static double
    sin(double radians)
    Get the sine of an angle.

    Methods inherited from class Object

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

  • Method Details

    • sin

      public static double sin(double radians)
      Get the sine of an angle.

      Originally written by JeffK, and taken from the Slick2D game library.

      Parameters:
      radians - The angle, in radians.
      Returns:
      The sine of radians.
      Since:
      1.0

    • cos

      public static double cos(double radians)
      Get the cosine of an angle.

      Originally written by JeffK, and taken from the Slick2D game library.

      Parameters:
      radians - The angle, in radians.
      Returns:
      The cosine of radians.
      Since:
      1.0

    • atan

      public static double atan(double z)
      Returns the arc tangent of a value. Accurate to within 0.005 radians, or ~0.29 degrees.

      Originally written by Nic Taylor, and taken from this page.

      Parameters:
      z - The value to calculate the arc tangent of.
      Returns:
      The arc tangent of z, in radians.
      Since:
      2.3

    • atan2

      public static double atan2(double y, double x)
      Returns the angle theta from the conversion of rectangular coordinates (x, y) to polar coordinates (r, theta). Accurate to within 0.005 radians, or ~0.29 degrees.

      Originally written by Nic Taylor, further modified by imuli, and taken from this page.

      Parameters:
      y - The ordinate coordinate.
      x - The abscissa coordinate.
      Returns:
      The theta component of the point (r, theta) in polar coordinates that corresponds to the point (x, y) in Cartesian coordinates.
      Since:
      2.3