public boolean evaluateIsZero(final double x,final double y,final double z){
  return Math.abs(evaluate(x,y,z)) < MINIMUM_RESOLUTION;
}

public boolean evaluateIsZero ( final double x , final double y , final double z ) { return Math . abs ( evaluate ( x , y , z ) ) < MINIMUM_RESOLUTION ; }
evaluate the plane equation for a given point , as represented by a vector .
