question: public boolean isNumericallyIdentical ( final Plane p ) { if ( Math . abs ( this . y * p . z - this . z * p . y ) >= MINIMUM_RESOLUTION ) return false ; if ( Math . abs ( this . z * p . x - this . x * p . z ) >= MINIMUM_RESOLUTION ) return false ; if ( Math . abs ( this . x * p . y - this . y * p . x ) >= MINIMUM_RESOLUTION ) return false ; final double denom = 1.0 / ( p . x * p . x + p . y * p . y + p . z * p . z ) ; return evaluateIsZero ( - p . x * p . D * denom , - p . y * p . D * denom , - p . z * p . D * denom ) ; }
target:  Returns true if this plane and the other plane are identical within the margin of error.