183     Standard_Real aDist = Extrem.SquareDistance(1);  in Perform()  local
188       if (aD < aDist)  in Perform()
190         aDist = aD;  in Perform()
194     aDist = sqrt(aDist) - radius;  in Perform()
195     mySqDist->SetValue(1, aDist * aDist);  in Perform()
490         Standard_Real   aDist = sqrt(aSqDist);  in Perform()  local
500         Standard_Real aShift[2] = {aDist + aCylRad, aDist - aCylRad};  in Perform()
557     Standard_Real aDist = anExtC.SquareDistance(1);  in Perform()  local
563       if (aD < aDist)  in Perform()
565         aDist = aD;  in Perform()
569     aDist = sqrt(aDist) - S.Radius();  in Perform()
570     mySqDist->SetValue(1, aDist * aDist);  in Perform()
625     Standard_Real aDist = sqrt(aSqDist) - S.Radius();  in Perform()  local
627     mySqDist->SetValue(1, aDist * aDist);  in Perform()