ENH: extended runTimePostProcessing (#1206)

- Extended runTimePostProcessing to include access to "live"
  simulation objects such a geometry patches and sampled surfaces
  stored on the "functionObjectObjects" registry.

- Add 'live' runTimePostProcessing of cloud data.
  Extracts position and fields from the cloud via its objectRegistry writer

- For the "live" simulation objects, there are two new volume filters
  that work directly with the OpenFOAM volume fields:
      * iso-surface
      * cutting planes
  Both use the VTK algorithms directly and support multiple values.
  Eg, can make multiple iso-levels or multiple planes parallel to each
  other.

- When VTK has been compiled with MPI-support, parallel rendering will
  be used.

- Additional title text properties (shadow, italic etc)

- Simplified handling of scalar-bar and visibility switches

- Support multiple text positions. Eg, for adding watermark text.

src/functionObjects/graphics/runTimePostProcessing/functionObjectBase.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2016-2018 OpenCFD Ltd.
+    \\  /    A nd           | Copyright (C) 2015-2019 OpenCFD Ltd.
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -25,20 +25,6 @@ License
 
 #include "functionObjectBase.H"
 
-// * * * * * * * * * * * * * Static Member Functions * * * * * * * * * * * * //
-
-namespace Foam
-{
-namespace functionObjects
-{
-namespace runTimePostPro
-{
-    defineTypeNameAndDebug(functionObjectBase, 0);
-}
-}
-}
-
-
 // * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //
 
 Foam::fileName
@@ -69,7 +55,12 @@ bool Foam::functionObjects::runTimePostPro::functionObjectBase::removeFile
 {
     // Foam::rm() ignores empty names etc.
 
-    return Foam::rm(getFileName(keyword, subDictName));
+    if (Pstream::master())
+    {
+        return Foam::rm(getFileName(keyword, subDictName));
+    }
+
+    return false;
 }
 
 
@@ -85,6 +76,7 @@ Foam::functionObjects::runTimePostPro::functionObjectBase::functionObjectBase
     fieldVisualisationBase(dict, colours),
     state_(state),
     functionObjectName_(dict.get<word>("functionObject")),
+    liveObject_(dict.lookupOrDefault("liveObject", true)),
     clearObjects_(dict.lookupOrDefault("clearObjects", false))
 {}