public static boolean epsilonEquals (IVector v1, IVector v2) {
        return epsilonEquals(v1, v2, MathUtil.EPSILON);
    }
public static boolean epsilonEquals ( IVector v1 , IVector v2 ) { return epsilonEquals ( v1 , v2 , MathUtil . EPSILON ) ; }
Returns true if the supplied vectors' x and y components are equal to one another within
{@link MathUtil#EPSILON}.