docs: public boolean isDistorted() {
  		if( radial != null && radial.length > 0 ) {
  			for (int i = 0; i < radial.length; i++) {
  				if( radial[i] != 0 )
  					return true;
  			}
  		}
  		return t1 != 0 || t2 != 0;
  	}