ENH: It is now possible to perform block selection on hierarchical box datasets.

Filtering/vtkHierarchicalBoxDataSet.cxx

@@ -30,7 +30,7 @@
 #include <vtkstd/vector>
 #include <assert.h>
 
-vtkCxxRevisionMacro(vtkHierarchicalBoxDataSet, "1.20");
+vtkCxxRevisionMacro(vtkHierarchicalBoxDataSet, "1.21");
 vtkStandardNewMacro(vtkHierarchicalBoxDataSet);
 
 vtkInformationKeyMacro(vtkHierarchicalBoxDataSet,BOX,IntegerVector);
@@ -389,6 +389,28 @@ void vtkHierarchicalBoxDataSet::PrintSelf(ostream& os, vtkIndent indent)
     */
 }
 
+//----------------------------------------------------------------------------
+unsigned int vtkHierarchicalBoxDataSet::GetFlatIndex(unsigned int level, 
+  unsigned int index)
+{
+  if (level > this->GetNumberOfLevels() || index > this->GetNumberOfDataSets(level))
+    {
+    // invalid level, index.
+    vtkErrorMacro("Invalid level (" << level << ") or index (" << index << ")");
+    return 0;
+    }
+
+  unsigned int findex=0;
+  for (unsigned int l=0; l < level; l++)
+    {
+    findex += 1;
+    findex += this->GetNumberOfDataSets(l);
+    }
+  findex += 1;
+  findex += (index + 1);
+  return findex;
+}
+
 //----------------------------------------------------------------------------
 vtkHierarchicalBoxDataSet* vtkHierarchicalBoxDataSet::GetData(
   vtkInformation* info)

Filtering/vtkHierarchicalBoxDataSet.h

@@ -187,7 +187,12 @@ public:
   // Unhiding superclass method.
   virtual int HasMetaData(vtkCompositeDataIterator* iter)
     { return this->Superclass::HasMetaData(iter); }
-  
+ 
+  // Description:
+  // Given the level and dataset index, returns the flat index provided level
+  // and dataset index are valid.
+  unsigned int GetFlatIndex(unsigned int level, unsigned int index);
+
 protected:
   vtkHierarchicalBoxDataSet();
   ~vtkHierarchicalBoxDataSet();

Graphics/vtkConvertSelection.cxx

@@ -29,6 +29,7 @@
 #include "vtkFieldData.h"
 #include "vtkGraph.h"
 #include "vtkHierarchicalBoxDataIterator.h"
+#include "vtkHierarchicalBoxDataSet.h"
 #include "vtkIdList.h"
 #include "vtkIdTypeArray.h"
 #include "vtkInformation.h"
@@ -51,7 +52,7 @@
 
 vtkCxxSetObjectMacro(vtkConvertSelection, ArrayNames, vtkStringArray);
 
-vtkCxxRevisionMacro(vtkConvertSelection, "1.14");
+vtkCxxRevisionMacro(vtkConvertSelection, "1.15");
 vtkStandardNewMacro(vtkConvertSelection);
 //----------------------------------------------------------------------------
 vtkConvertSelection::vtkConvertSelection()
@@ -265,7 +266,19 @@ int vtkConvertSelection::ConvertToBlockSelection(
       indices.insert(static_cast<unsigned int>(
           properties->Get(vtkSelection::COMPOSITE_INDEX())));
       }
-    // TODO: is has HIERARCHICAL_INDEX() & HIERARCHICAL_LEVEL.
+    else if (properties->Has(vtkSelection::CONTENT_TYPE()) &&
+      properties->Has(vtkSelection::HIERARCHICAL_INDEX()) &&
+      properties->Has(vtkSelection::HIERARCHICAL_LEVEL()) && 
+      data->IsA("vtkHierarchicalBoxDataSet"))
+      {
+       // convert hierarchical index to composite index.
+       vtkHierarchicalBoxDataSet* hbox = static_cast<vtkHierarchicalBoxDataSet*>(data);
+       indices.insert(
+         hbox->GetFlatIndex(
+           static_cast<unsigned int>(properties->Get(vtkSelection::HIERARCHICAL_LEVEL())),
+           static_cast<unsigned int>(properties->Get(vtkSelection::HIERARCHICAL_INDEX()))));
+
+      }
     }
  
   VTK_CREATE(vtkUnsignedIntArray, selectionList);