ENH: suppress cell/patch/proc ids for foamToVTK (#1230)

- reduces output size, consistent with vtkWrite function object

STYLE: mark some foamToVTK options as advanced (ie, visible with -help-full)

src/functionObjects/utilities/vtkWrite/vtkWrite.C

@@ -528,15 +528,13 @@ bool Foam::functionObjects::vtkWrite::write()
         {
             if (internalWriter.valid())
             {
-                // cellIds + procIds (parallel)
+                // Optionally with cellID and procID fields
                 internalWriter->beginCellData
                 (
                     (writeIds_ ? 1 + (internalWriter->parallel() ? 1 : 0) : 0)
-                  + (internalWriter->parallel() ? 1 : 0)
                   + nVolFields + nDimFields
                 );
 
-                // Write cellID field + procID (parallel only)
                 if (writeIds_)
                 {
                     internalWriter->writeCellIDs();
@@ -548,11 +546,13 @@ bool Foam::functionObjects::vtkWrite::write()
             {
                 for (vtk::patchWriter& writer : patchWriters)
                 {
+                    // Optionally with patchID field
                     writer.beginCellData
                     (
                         (writeIds_ ? 1 : 0)
                       + nVolFields
                     );
+
                     if (writeIds_)
                     {
                         writer.writePatchIDs();

src/functionObjects/utilities/vtkWrite/vtkWrite.H

@@ -98,7 +98,7 @@ Description
         directory   | The output directory name     | no | postProcessing/NAME
         width       | Padding width for file name           | no  | 8
         decompose   | Decompose polyhedral cells            | no  | false
-        writeIds    | Write cell/patch ids as field         | no  | false
+        writeIds    | Write cell,patch,proc id fields       | no  | false
     \endtable
 
     \heading Output Selection