ParaView-5.0.1: Added the source-tree to ThirdParty-dev and patched as described in the README file

Resolves bug-report http://bugs.openfoam.org/view.php?id=2098

ParaView-5.0.1/VTK/Examples/Array/Cxx/IdentityMatrix.cxx

@@ -0,0 +1,41 @@
+#include <vtkArrayPrint.h>
+#include <vtkSparseArray.h>
+
+#include <sstream>
+
+int main(int argc, char* argv[])
+{
+  if(argc != 2)
+    {
+    cerr << "usage: " << argv[0] << " matrix-size\n";
+    return 1;
+    }
+
+  int size = 0;
+  std::istringstream buffer(argv[1]);
+  buffer >> size;
+
+  if(size < 1)
+    {
+    cerr << "matrix size must be an integer greater-than zero\n";
+    return 2;
+    }
+
+  // Create a sparse identity matrix:
+  vtkSparseArray<double>* matrix = vtkSparseArray<double>::New();
+  matrix->Resize(0, 0); // To set the number of dimensions
+  for(int n = 0; n != size; ++n)
+    {
+    matrix->AddValue(vtkArrayCoordinates(n, n), 1);
+    }
+  matrix->SetExtentsFromContents(); // To synchronize the array extents with newly-added values.
+
+  cout << "matrix:\n";
+  vtkPrintMatrixFormat(cout, matrix);
+  cout << "\n";
+
+  matrix->Delete();
+
+  return 0;
+}
+