--- PamCut/CommonDefs.h	2009/05/29 08:59:40	1.2
+++ PamCut/CommonDefs.h	2009/08/05 14:06:44	1.4
@@ -26,7 +26,19 @@
   TRIG = 16, ///< Code for Trigger
   ORB = 32, ///< Code for Orbital Info
   ALL = 63, ///< Sum of all the above codes
-  CALO_L1 = 64 ///< Code for Calorimeter level1
+  CALO_L1 = 64
+///< Code for Calorimeter level1
+};
+
+/*! @enum TOFLAYERS Flags to identify layers. */
+enum TOFLAYERS {
+  S11 = 1, ///< S11.
+  S12 = 2, ///< S12.
+  S21 = 4, ///< S21.
+  S22 = 8, ///< S22.
+  S31 = 16, ///< S31.
+  S32 = 32
+///< S32.
 };
 
 /*! @var TOFNPADLAYER
@@ -37,9 +49,8 @@
 /*! @brief A simple matrix class.
  *
  *  This class defines a matrix built by STL vectors. It is basically a variable-dimension
- *  vector of vectors; the dimension is defined at construction and cannot be changed in
- *  current implementation. It is intended as a container and not for algebraic manipulations.
- *  The class provides a standard access operator [].
+ *  vector of vectors. It is intended as a container and not for algebraic manipulations.
+ *  The class provides a standard access operator [] and a resize method.
  */
 template<class T>
 class SimpleMatrix {
@@ -56,7 +67,7 @@
    * @param elements The initialization value for the matrix elements.
    */
   SimpleMatrix(unsigned int nRows, unsigned int nCols, T elements = T()) :
-    _matrix(nRows, std::vector<T>(nCols, elements)), _nRows(nRows), _nCols(nCols) {
+    _matrix(nRows, std::vector<T>(nCols, elements)) {
 
   }
 
@@ -74,7 +85,7 @@
    * @return The number of rows.
    */
   unsigned int GetNRows() {
-    return _nRows;
+    return _matrix.size();
   }
 
   /*! @brief Returns the number of columns.
@@ -82,13 +93,30 @@
    * @return The number of columns.
    */
   unsigned int GetNCols() {
-    return _nCols;
+    return _matrix[0].size();
+  }
+
+  /*! @brief Resizes the matrix.
+   *
+   * If new rows or columns are added, they are initialized to the default value; if T
+   * is a class with no default constructor, a default value for T must be provided, which will
+   * be replicated in every new matrix element. No modification
+   * is done to existing elements (except for those that will be eventually removed).
+   *
+   * @param nRows The new number of rows.
+   * @param nCols The new number of columns.
+   * @param elements The initialization value for the new matrix elements.
+   */
+  void Resize(unsigned int nRows, unsigned int nCols, T elements = T()) {
+
+    _matrix.resize(nRows, std::vector<T>(nCols, elements));
+    for (unsigned int i = 0; i < _matrix.size(); i++)
+      _matrix[i].resize(nCols, elements);
   }
 
 private:
 
   std::vector<std::vector<T> > _matrix;
-  unsigned int _nRows, _nCols;
 };
 
 #endif /* COMMONDEFS_H_ */