Class Util


  • public class Util
    extends Object
    • 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)