adding code images

docs.it4i/software/viz/insitu.md

@@ -45,7 +45,9 @@ It will generate the CxxFullExampleAdaptor executable file. This can be later ru
 
 ## Code explanation
 
-Provided example is a simple MPI program. Main executing part is written in FEDriver.cxx. It is a simulator code that creates computational grid and performs simulation. Dimensions of the computational grid in terms of number of points in x, y, z direction are supplied as input parameters to the *main* function (see lines 22-24). Fourth parametr expects a name of a Python script that sets up ParaView-Catalyst environment. 
+Provided example is a simple MPI program. Main executing part is written in FEDriver.cxx. It is a simulator code that creates computational grid and performs simulation (see below). 
+
+Dimensions of the computational grid in terms of number of points in x, y, z direction are supplied as input parameters to the *main* function (see lines 22-24). The fourth parametr in *main* is for the name of a Python script (we use feslicescript.py) that sets up the ParaView-Catalyst pipeline. 
 
 
 ![](insitu/img/FEDriver.png "FEDriver.cxx")

docs.it4i/software/viz/insitu/FEAdaptor.cxx

@@ -106,7 +106,7 @@ void BuildVTKDataStructures(Grid& grid, Attributes& attributes, vtkCPInputDataDe
 namespace FEAdaptor
 {
 
-void Initialize(int numScripts, char* scripts[])
+void Initialize(char* script)
 {
   if (Processor == NULL)
   {
@@ -117,12 +117,10 @@ void Initialize(int numScripts, char* scripts[])
   {
     Processor->RemoveAllPipelines();
   }
-  for (int i = 0; i < numScripts; i++)
-  {
-    vtkNew<vtkCPPythonScriptPipeline> pipeline;
-    pipeline->Initialize(scripts[i]);
-    Processor->AddPipeline(pipeline.GetPointer());
-  }
+  
+  vtkNew<vtkCPPythonScriptPipeline> pipeline;
+  pipeline->Initialize(script);
+  Processor->AddPipeline(pipeline.GetPointer()); 
 }
 
 void Finalize()

docs.it4i/software/viz/insitu/FEAdaptor.h

@@ -6,7 +6,7 @@ class Grid;
 
 namespace FEAdaptor
 {
-void Initialize(int numScripts, char* scripts[]);
+void Initialize(char* script);
 
 void Finalize();
 

docs.it4i/software/viz/insitu/FEDriver.cxx

@@ -10,6 +10,17 @@
 #endif
 
 // Example of a C++ adaptor for a simulation code
+// where the simulation code has a fixed topology
+// grid. We treat the grid as an unstructured
+// grid even though in the example provided it
+// would be best described as a vtkImageData.
+// Also, the points are stored in an inconsistent
+// manner with respect to the velocity vector.
+// This is purposefully done to demonstrate
+// the different approaches for getting data
+// into Catalyst. Note that through configuration
+// that the driver can be run without linking
+// to Catalyst.
 
 int main(int argc, char** argv)
 {
@@ -35,7 +46,7 @@ int main(int argc, char** argv)
 
 #ifdef USE_CATALYST
   // The first argument is the program name
-  FEAdaptor::Initialize(argc - 4, &argv[4]);
+  FEAdaptor::Initialize(argv[4]);
 #endif
   unsigned int numberOfTimeSteps = 1000;
   for (unsigned int timeStep = 0; timeStep < numberOfTimeSteps; timeStep++)