accesors to internal typename from derived class

src/OpenMesh/Core/Utils/Property.hh

@@ -99,8 +99,10 @@ public:
 public:
 
   /// Default constructor
-  explicit PropertyT(const std::string& _name = "<unknown>")
-  : BaseProperty(_name)
+  explicit PropertyT(
+            const std::string& _name = "<unknown>",
+            const std::string& _internal_type_name = "<unknown>")
+  : BaseProperty(_name, _internal_type_name)
   {}
 
   /// Copy constructor
@@ -173,17 +175,17 @@ public: // data access interface
 
     return &data_[0];
   }
-
-  /// Get reference to property vector (be careful, improper usage, e.g. resizing, may crash OpenMesh!!!)
-  vector_type& data_vector() {
-    return data_;
-  }
-
-  /// Const access to property vector
-  const vector_type& data_vector() const {
-    return data_;
-  }
-
+
+  /// Get reference to property vector (be careful, improper usage, e.g. resizing, may crash OpenMesh!!!)
+  vector_type& data_vector() {
+    return data_;
+  }
+
+  /// Const access to property vector
+  const vector_type& data_vector() const {
+    return data_;
+  }
+
   /// Access the i'th element. No range check is performed!
   reference operator[](int _idx)
   {
@@ -337,17 +339,17 @@ public:
 
 
 public:
-
-  /// Get reference to property vector (be careful, improper usage, e.g. resizing, may crash OpenMesh!!!)
-  vector_type& data_vector() {
-    return data_;
-  }
-
-  /// Const access to property vector
-  const vector_type& data_vector() const {
-    return data_;
-  }
-
+
+  /// Get reference to property vector (be careful, improper usage, e.g. resizing, may crash OpenMesh!!!)
+  vector_type& data_vector() {
+    return data_;
+  }
+
+  /// Const access to property vector
+  const vector_type& data_vector() const {
+    return data_;
+  }
+
   /// Access the i'th element. No range check is performed!
   reference operator[](int _idx)
   {