public static void RemoveLinesNotInRect(Rect rect, params SortedDictionary <double, FormLineList>[] lines)
 {
     foreach (SortedDictionary <double, FormLineList> lineDic in lines)
     {
         for (int j = 0; j < lineDic.Count; j++)
         {
             FormLineList lineList = lineDic[lineDic.Keys.ToArray()[j]];
             for (int i = 0; i < lineList.Count;)
             {
                 if (!rect.ContainFormLine(lineList[i]))
                 {
                     lineList.RemoveAt(i);
                 }
                 else
                 {
                     i++;
                 }
             }
         }
         GenericMethods <double, FormLineList> .RemoveZeroAmountValueItems(lineDic);
     }
 }