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/*=========================================================================
Program: Visualization Toolkit
Module: vtkBridgeCellIteratorOnDataSet.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.
=========================================================================*/
// .NAME vtkBridgeCellIteratorOnDataSet - Iterate over cells of a dataset.
// .SECTION See Also
// vtkBridgeCellIterator, vtkBridgeDataSet, vtkBridgeCellIteratorStrategy
#include "vtkBridgeCellIteratorOnDataSet.h"
#include <cassert>
#include "vtkBridgeCell.h"
#include "vtkBridgeDataSet.h"
#include "vtkCell.h"
#include "vtkDataSet.h"
#include "vtkObjectFactory.h"
vtkStandardNewMacro(vtkBridgeCellIteratorOnDataSet);
//-----------------------------------------------------------------------------
void vtkBridgeCellIteratorOnDataSet::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
}
//-----------------------------------------------------------------------------
vtkBridgeCellIteratorOnDataSet::vtkBridgeCellIteratorOnDataSet()
{
this->DataSet = nullptr;
this->Cell = vtkBridgeCell::New();
this->Id = 0;
this->Size = 0;
// this->DebugOn();
}
//-----------------------------------------------------------------------------
vtkBridgeCellIteratorOnDataSet::~vtkBridgeCellIteratorOnDataSet()
{
if (this->DataSet != nullptr)
{
this->DataSet->Delete();
this->DataSet = nullptr;
}
this->Cell->Delete();
this->Cell = nullptr;
}
//-----------------------------------------------------------------------------
// Description:
// Move iterator to first position if any (loop initialization).
void vtkBridgeCellIteratorOnDataSet::Begin()
{
this->Id = -1;
this->Next(); // skip cells of other dimensions
}
//-----------------------------------------------------------------------------
// Description:
// Is there no cell at iterator position? (exit condition).
vtkTypeBool vtkBridgeCellIteratorOnDataSet::IsAtEnd()
{
return (this->Id >= this->Size);
}
//-----------------------------------------------------------------------------
// Description:
// Cell at current position
// \pre not_at_end: !IsAtEnd()
// \pre c_exists: c!=0
// THREAD SAFE
void vtkBridgeCellIteratorOnDataSet::GetCell(vtkGenericAdaptorCell* c)
{
assert("pre: not_at_end" && !IsAtEnd());
assert("pre: c_exists" && c != nullptr);
vtkBridgeCell* c2 = static_cast<vtkBridgeCell*>(c);
c2->Init(this->DataSet, this->Id);
}
//-----------------------------------------------------------------------------
// Description:
// Cell at current position.
// NOT THREAD SAFE
// \pre not_at_end: !IsAtEnd()
// \post result_exits: result!=0
vtkGenericAdaptorCell* vtkBridgeCellIteratorOnDataSet::GetCell()
{
assert("pre: not_at_end" && !IsAtEnd());
this->Cell->Init(this->DataSet, this->Id);
vtkGenericAdaptorCell* result = this->Cell;
assert("post: result_exits" && result != nullptr);
return result;
}
//-----------------------------------------------------------------------------
// Description:
// Move iterator to next position. (loop progression).
// \pre not_at_end: !IsAtEnd()
void vtkBridgeCellIteratorOnDataSet::Next()
{
assert("pre: not_off" && !IsAtEnd());
vtkIdType size = this->Size;
vtkCell* c;
int found;
this->Id++;
if (this->Dim >= 0) // skip cells of other dimensions than this->Dim
{
found = 0;
while ((this->Id < size) && (!found))
{
c = this->DataSet->Implementation->GetCell(this->Id);
found = c->GetCellDimension() == this->Dim;
this->Id++;
}
if (found)
{
this->Id--;
}
}
}
//-----------------------------------------------------------------------------
// Description:
// Used internally by vtkBridgeDataSet.
// Iterate over cells of `ds' of some dimension `dim'.
// \pre ds_exists: ds!=0
// \pre valid_dim_range: (dim>=-1) && (dim<=3)
void vtkBridgeCellIteratorOnDataSet::InitWithDataSet(vtkBridgeDataSet* ds, int dim)
{
assert("pre: ds_exists" && ds != nullptr);
assert("pre: valid_dim_range" && (dim >= -1) && (dim <= 3));
this->Dim = dim;
vtkSetObjectBodyMacro(DataSet, vtkBridgeDataSet, ds);
this->Size = ds->GetNumberOfCells();
this->Id = this->Size; // at end
}
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