Class Util


  • public class Util
    extends java.lang.Object
    • Constructor Summary

      Constructors 
      Constructor Description
      Util()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static boolean canBeNormalized​(javajs.util.V3d a)  
      static boolean canBeSquared​(double x)  
      static double distance2​(double[] a, double[] b)  
      static double distance2V​(javajs.util.V3d a, javajs.util.V3d b)  
      static double getAngleRadiansABC​(double[] a, double[] b, double[] c)  
      static double getTorsionAngleRadians​(double[] a, double[] b, double[] c, double[] d, javajs.util.V3d r1, javajs.util.V3d r2, javajs.util.V3d r3)  
      static boolean isApprox​(javajs.util.V3d a, javajs.util.V3d b, double precision)  
      static boolean isFinite​(double a)  
      static boolean isNear​(double a, double b)  
      static boolean isNear3​(double a, double b, double epsilon)  
      static boolean isNearZero​(double a)  
      static boolean isNearZero2​(double a, double epsilon)  
      static boolean isNegligible​(double a, double b)  
      static boolean isNegligible3​(double a, double b, double precision)  
      static double pointPlaneAngleRadians​(javajs.util.V3d a, javajs.util.V3d b, javajs.util.V3d c, javajs.util.V3d d, javajs.util.V3d v1, javajs.util.V3d v2, javajs.util.V3d norm, boolean fixTheta)
      calculates angle of a to plane bcd, returning a value > pi/2 in highly distorted trigonal pyramidal situations
      static void putCoord​(javajs.util.V3d v, double[] c)  
      private static void randomizeUnitVector​(javajs.util.V3d v)  
      static double restorativeForceAndAngleRadians​(javajs.util.V3d i, javajs.util.V3d j, javajs.util.V3d k)  
      static double restorativeForceAndDistance​(javajs.util.V3d a, javajs.util.V3d b, javajs.util.V3d vab)  
      static double restorativeForceAndOutOfPlaneAngleRadians​(javajs.util.V3d i, javajs.util.V3d j, javajs.util.V3d k, javajs.util.V3d l, javajs.util.V3d an, javajs.util.V3d bn, javajs.util.V3d cn)  
      static double restorativeForceAndTorsionAngleRadians​(javajs.util.V3d i, javajs.util.V3d j, javajs.util.V3d k, javajs.util.V3d l)  
      static void sub​(double[] a, double[] b, javajs.util.V3d result)  
      private static double vectorAngleRadians​(javajs.util.V3d v1, javajs.util.V3d v2)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Util

        public Util()
    • Method Detail

      • sub

        public static void sub​(double[] a,
                               double[] b,
                               javajs.util.V3d result)
      • putCoord

        public static void putCoord​(javajs.util.V3d v,
                                    double[] c)
      • distance2

        public static double distance2​(double[] a,
                                       double[] b)
      • distance2V

        public static double distance2V​(javajs.util.V3d a,
                                        javajs.util.V3d b)
      • getAngleRadiansABC

        public static double getAngleRadiansABC​(double[] a,
                                                double[] b,
                                                double[] c)
      • isApprox

        public static boolean isApprox​(javajs.util.V3d a,
                                       javajs.util.V3d b,
                                       double precision)
      • canBeSquared

        public static boolean canBeSquared​(double x)
      • isNegligible

        public static boolean isNegligible​(double a,
                                           double b)
      • isFinite

        public static boolean isFinite​(double a)
      • isNegligible3

        public static boolean isNegligible3​(double a,
                                            double b,
                                            double precision)
      • isNear

        public static boolean isNear​(double a,
                                     double b)
      • isNear3

        public static boolean isNear3​(double a,
                                      double b,
                                      double epsilon)
      • isNearZero

        public static boolean isNearZero​(double a)
      • isNearZero2

        public static boolean isNearZero2​(double a,
                                          double epsilon)
      • canBeNormalized

        public static boolean canBeNormalized​(javajs.util.V3d a)
      • pointPlaneAngleRadians

        public static double pointPlaneAngleRadians​(javajs.util.V3d a,
                                                    javajs.util.V3d b,
                                                    javajs.util.V3d c,
                                                    javajs.util.V3d d,
                                                    javajs.util.V3d v1,
                                                    javajs.util.V3d v2,
                                                    javajs.util.V3d norm,
                                                    boolean fixTheta)
        calculates angle of a to plane bcd, returning a value > pi/2 in highly distorted trigonal pyramidal situations
        Parameters:
        a -
        b -
        c -
        d -
        v1 -
        v2 -
        norm -
        fixTheta -
        Returns:
        Wilson angle
      • vectorAngleRadians

        private static double vectorAngleRadians​(javajs.util.V3d v1,
                                                 javajs.util.V3d v2)
      • getTorsionAngleRadians

        public static double getTorsionAngleRadians​(double[] a,
                                                    double[] b,
                                                    double[] c,
                                                    double[] d,
                                                    javajs.util.V3d r1,
                                                    javajs.util.V3d r2,
                                                    javajs.util.V3d r3)
      • restorativeForceAndDistance

        public static double restorativeForceAndDistance​(javajs.util.V3d a,
                                                         javajs.util.V3d b,
                                                         javajs.util.V3d vab)
      • randomizeUnitVector

        private static void randomizeUnitVector​(javajs.util.V3d v)
      • restorativeForceAndAngleRadians

        public static double restorativeForceAndAngleRadians​(javajs.util.V3d i,
                                                             javajs.util.V3d j,
                                                             javajs.util.V3d k)
      • restorativeForceAndOutOfPlaneAngleRadians

        public static double restorativeForceAndOutOfPlaneAngleRadians​(javajs.util.V3d i,
                                                                       javajs.util.V3d j,
                                                                       javajs.util.V3d k,
                                                                       javajs.util.V3d l,
                                                                       javajs.util.V3d an,
                                                                       javajs.util.V3d bn,
                                                                       javajs.util.V3d cn)
      • restorativeForceAndTorsionAngleRadians

        public static double restorativeForceAndTorsionAngleRadians​(javajs.util.V3d i,
                                                                    javajs.util.V3d j,
                                                                    javajs.util.V3d k,
                                                                    javajs.util.V3d l)