allow on-the-fly construction for e.g. having hundreds of cutting planes

src/OpenFOAM/db/functionObjects/OutputFilterFunctionObject/OutputFilterFunctionObject.C

@@ -37,8 +37,43 @@ void Foam::OutputFilterFunctionObject<OutputFilter>::readDict()
     dict_.readIfPresent("region", regionName_);
     dict_.readIfPresent("dictionary", dictName_);
     dict_.readIfPresent("enabled", enabled_);
+    dict_.readIfPresent("storeFilter", storeFilter_);
 }
 
+template<class OutputFilter>
+void Foam::OutputFilterFunctionObject<OutputFilter>::allocateFilter()
+{
+    if (dictName_.size())
+    {
+        ptr_.reset
+        (
+            new IOOutputFilter<OutputFilter>
+            (
+                name(),
+                time_.lookupObject<objectRegistry>(regionName_),
+                dictName_
+            )
+        );
+    }
+    else
+    {
+        ptr_.reset
+        (
+            new OutputFilter
+            (
+                name(),
+                time_.lookupObject<objectRegistry>(regionName_),
+                dict_
+            )
+        );
+    }
+}
+
+template<class OutputFilter>
+void Foam::OutputFilterFunctionObject<OutputFilter>::destroyFilter()
+{
+    ptr_.reset();
+}
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
@@ -56,6 +91,7 @@ Foam::OutputFilterFunctionObject<OutputFilter>::OutputFilterFunctionObject
     regionName_(polyMesh::defaultRegion),
     dictName_(),
     enabled_(true),
+    storeFilter_(true),
     outputControl_(t, dict)
 {
     readDict();
@@ -83,32 +119,9 @@ bool Foam::OutputFilterFunctionObject<OutputFilter>::start()
 {
     readDict();
 
-    if (enabled_)
+    if (enabled_&&storeFilter_)
     {
-        if (dictName_.size())
-        {
-            ptr_.reset
-            (
-                new IOOutputFilter<OutputFilter>
-                (
-                    name(),
-                    time_.lookupObject<objectRegistry>(regionName_),
-                    dictName_
-                )
-            );
-        }
-        else
-        {
-            ptr_.reset
-            (
-                new OutputFilter
-                (
-                    name(),
-                    time_.lookupObject<objectRegistry>(regionName_),
-                    dict_
-                )
-            );
-        }
+        allocateFilter();
     }
 
     return true;
@@ -120,12 +133,22 @@ bool Foam::OutputFilterFunctionObject<OutputFilter>::execute()
 {
     if (enabled_)
     {
+        if (!storeFilter_)
+        {
+            allocateFilter();
+        }
+
         ptr_->execute();
 
         if (enabled_ && outputControl_.output())
         {
             ptr_->write();
         }
+
+        if (!storeFilter_)
+        {
+            destroyFilter();
+        }
     }
 
     return true;
@@ -137,12 +160,22 @@ bool Foam::OutputFilterFunctionObject<OutputFilter>::end()
 {
     if (enabled_)
     {
+        if (!storeFilter_)
+        {
+            allocateFilter();
+        }
+
         ptr_->end();
 
         if (enabled_ && outputControl_.output())
         {
             ptr_->write();
         }
+
+        if (!storeFilter_)
+        {
+            destroyFilter();
+        }
     }
 
     return true;

src/OpenFOAM/db/functionObjects/OutputFilterFunctionObject/OutputFilterFunctionObject.H

@@ -78,6 +78,10 @@ class OutputFilterFunctionObject
         //- Switch for the execution of the functionObject
         bool enabled_;
 
+        //- Switch to store filter in between writes or use on-the-fly
+        //  construction
+        bool storeFilter_;
+
         //- Output controls
         outputFilterOutputControl outputControl_;
 
@@ -89,6 +93,12 @@ class OutputFilterFunctionObject
 
         //- Read relevant dictionary entries
         void readDict();
+ 
+        //- Creates most of the data associated with this object.
+        void allocateFilter();
+
+        //- Destroys most of the data associated with this object.
+        void destroyFilter();
 
         //- Disallow default bitwise copy construct
         OutputFilterFunctionObject(const OutputFilterFunctionObject&);