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/*=========================================================================
Program: Visualization Toolkit
Module: vtkHyperOctreeDepth.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkHyperOctreeDepth.h"
#include "vtkObjectFactory.h"
#include "vtkHyperOctree.h"
#include "vtkHyperOctreeCursor.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkCellArray.h"
#include "vtkCellData.h"
#include "vtkIntArray.h"
vtkStandardNewMacro(vtkHyperOctreeDepth);
//----------------------------------------------------------------------------
vtkHyperOctreeDepth::vtkHyperOctreeDepth()
{
this->GeneratedDepths = 0;
}
//----------------------------------------------------------------------------
vtkHyperOctreeDepth::~vtkHyperOctreeDepth()
{
if (this->GeneratedDepths)
{
this->GeneratedDepths->Delete();
this->GeneratedDepths = 0;
}
}
//----------------------------------------------------------------------------
int vtkHyperOctreeDepth::RequestData(vtkInformation *vtkNotUsed(request),
vtkInformationVector **inputVector,
vtkInformationVector *outputVector)
{
// get the info objects
vtkInformation *inInfo = inputVector[0]->GetInformationObject(0);
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the input and output
this->Input = vtkHyperOctree::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
this->Output=vtkHyperOctree::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
this->Output->ShallowCopy(this->Input);
int MaximumLevel = inInfo->Get(vtkHyperOctree::LEVELS());
vtkIdType fact=(1<<(MaximumLevel-1));
vtkIdType maxNumberOfCells=fact*fact;
if (this->GeneratedDepths)
{
this->GeneratedDepths->Delete();
this->GeneratedDepths = 0;
}
this->GeneratedDepths = vtkIntArray::New();
this->GeneratedDepths->SetNumberOfComponents(1);
this->GeneratedDepths->Allocate(maxNumberOfCells);
this->GeneratedDepths->SetName("Depth");
this->Output->GetLeafData()->AddArray(this->GeneratedDepths);
vtkHyperOctreeCursor *cursor=this->Input->NewCellCursor();
cursor->ToRoot();
this->NumChildren = cursor->GetNumberOfChildren();
this->TraverseAndCount(cursor, 0);
cursor->Delete();
return 1;
}
//----------------------------------------------------------------------------
void vtkHyperOctreeDepth::TraverseAndCount(vtkHyperOctreeCursor *cursor,
int depth)
{
if (cursor->CurrentIsLeaf())
{
//this node is a leaf, we must stop now
vtkIdType id=cursor->GetLeafId();
this->Output->GetLeafData()->GetArray("Depth")->InsertTuple1(id,depth);
}
else
{
//this node has 'nchildren' children,
//some of which are internal nodes, so we must continue down
int i=0;
while(i<this->NumChildren)
{
cursor->ToChild(i);
this->TraverseAndCount(cursor, depth+1);
cursor->ToParent();
++i;
}
}
}
//----------------------------------------------------------------------------
int vtkHyperOctreeDepth::FillInputPortInformation(int, vtkInformation *info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkHyperOctree");
return 1;
}
//----------------------------------------------------------------------------
int vtkHyperOctreeDepth::FillOutputPortInformation(int, vtkInformation *info)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkHyperOctree");
return 1;
}
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