PropertyManager: Added copy_to method.

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@1176 fdac6126-5c0c-442c-9429-916003d36597

src/OpenMesh/Core/Utils/PropertyManager.hh

@@ -57,7 +57,7 @@ namespace OpenMesh {
  *
  * \code
  * TriMesh mesh;
- * PropertyManager<VPropHandleT<bool>, MeshT> visited(mesh, "visited.plugin-example.i8.informatik.rwth-aachen.de");
+ * PropertyManager<VPropHandleT<bool>, TriMesh> visited(mesh, "visited.plugin-example.i8.informatik.rwth-aachen.de");
  *
  * for (TriMesh::VertexIter vh_it = mesh.begin(); ... ; ...) {
  *     if (!visited[*vh_it]) {
@@ -320,6 +320,40 @@ class PropertyManager {
                 (*this)[*begin] = value;
         }
 
+        /**
+         * Conveniently transfer the values managed by one property manager
+         * onto the values managed by a different property manager.
+         *
+         * @param begin Start iterator. Needs to dereference to HandleType. Will
+         * be used with this property manager.
+         * @param end End iterator. (Exclusive.) Will be used with this property
+         * manager.
+         * @param dst_propmanager The destination property manager.
+         * @param dst_begin Start iterator. Needs to dereference to the
+         * HandleType of dst_propmanager. Will be used with dst_propmanager.
+         * @param dst_end End iterator. (Exclusive.)
+         * Will be used with dst_propmanager. Used to double check the bounds.
+         */
+        template<typename HandleTypeIterator, typename PROPTYPE_2,
+                 typename MeshT_2, typename HandleTypeIterator_2>
+        void copy_to(HandleTypeIterator begin, HandleTypeIterator end,
+                PropertyManager<PROPTYPE_2, MeshT_2> &dst_propmanager,
+                HandleTypeIterator_2 dst_begin, HandleTypeIterator_2 dst_end) const {
+
+            for (; begin != end && dst_begin != dst_end; ++begin, ++dst_begin) {
+                dst_propmanager[dst_begin] = (*this)[*begin];
+            }
+        }
+
+        template<typename RangeType, typename PROPTYPE_2,
+                 typename MeshT_2, typename RangeType_2>
+        void copy_to(RangeType range,
+                PropertyManager<PROPTYPE_2, MeshT_2> &dst_propmanager,
+                RangeType_2 dst_range) const {
+            copy_to(range.begin(), range.end(), dst_propmanager,
+                    dst_range.begin(), dst_range.end());
+        }
+
     private:
         void deleteProperty() {
             if (!retain_)