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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkDataSetCellIterator.h"
#include "vtkHyperTreeGrid.h"
#include "vtkIdList.h"
#include "vtkObjectFactory.h"
#include "vtkPoints.h"
#include "vtkRectilinearGrid.h"
VTK_ABI_NAMESPACE_BEGIN
vtkStandardNewMacro(vtkDataSetCellIterator);
namespace
{
template <typename T>
void SetArrayType(T* grid, vtkPoints* points)
{
// check all directions to see if any of them are doubles and
// if they are we set the points data type to double. If the
// data types are all the same then we set it to the common
// data type. Otherwise we give up and just keep the default
// float data type.
int xType = -1, yType = -1, zType = -1;
if (vtkDataArray* x = grid->GetXCoordinates())
{
xType = x->GetDataType();
if (xType == VTK_DOUBLE)
{
points->SetDataType(VTK_DOUBLE);
return;
}
}
if (vtkDataArray* y = grid->GetYCoordinates())
{
yType = y->GetDataType();
if (yType == VTK_DOUBLE)
{
points->SetDataType(VTK_DOUBLE);
return;
}
}
if (vtkDataArray* z = grid->GetZCoordinates())
{
zType = z->GetDataType();
if (zType == VTK_DOUBLE)
{
points->SetDataType(VTK_DOUBLE);
return;
}
}
if (xType != -1 || yType != -1 || zType != -1)
{
if (xType == yType && xType == zType)
{
points->SetDataType(xType);
return;
}
if (xType == -1)
{
if (yType == -1)
{
points->SetDataType(zType);
return;
}
else if (zType == -1 || yType == zType)
{
points->SetDataType(yType);
return;
}
}
if (yType == -1)
{
if (xType == -1)
{
points->SetDataType(zType);
return;
}
else if (zType == -1 || xType == zType)
{
points->SetDataType(xType);
return;
}
}
if (zType == -1)
{
if (xType == -1)
{
points->SetDataType(yType);
return;
}
else if (yType == -1 || xType == yType)
{
points->SetDataType(xType);
return;
}
}
}
// Set it to the default since it may have gotten set to something else
points->SetDataType(VTK_FLOAT);
}
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "DataSet: " << this->DataSet << endl;
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::SetDataSet(vtkDataSet* ds)
{
this->DataSet = ds;
this->CellId = 0;
if (vtkRectilinearGrid* rg = vtkRectilinearGrid::SafeDownCast(ds))
{
SetArrayType(rg, this->Points);
}
else if (vtkHyperTreeGrid* htg = vtkHyperTreeGrid::SafeDownCast(ds))
{
SetArrayType(htg, this->Points);
}
else if (ds->IsA("vtkImageData"))
{
// ImageData Origin and Spacing are doubles so
// the data type for this should also be double
this->Points->SetDataType(VTK_DOUBLE);
}
}
//------------------------------------------------------------------------------
bool vtkDataSetCellIterator::IsDoneWithTraversal()
{
return this->DataSet == nullptr || this->CellId >= this->DataSet->GetNumberOfCells();
}
//------------------------------------------------------------------------------
vtkIdType vtkDataSetCellIterator::GetCellId()
{
return this->CellId;
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::IncrementToNextCell()
{
++this->CellId;
}
//------------------------------------------------------------------------------
vtkDataSetCellIterator::vtkDataSetCellIterator()
: DataSet(nullptr)
, CellId(0)
{
}
//------------------------------------------------------------------------------
vtkDataSetCellIterator::~vtkDataSetCellIterator() = default;
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::ResetToFirstCell()
{
this->CellId = 0;
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::FetchCellType()
{
this->CellType = this->DataSet->GetCellType(this->CellId);
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::FetchPointIds()
{
this->DataSet->GetCellPoints(this->CellId, this->PointIds);
}
//------------------------------------------------------------------------------
void vtkDataSetCellIterator::FetchPoints()
{
// This will fetch the point ids if needed:
vtkIdList* pointIds = this->GetPointIds();
vtkIdType numPoints = pointIds->GetNumberOfIds();
vtkIdType* id = pointIds->GetPointer(0);
this->Points->SetNumberOfPoints(numPoints);
double point[3];
for (int i = 0; i < numPoints; ++i)
{
this->DataSet->GetPoint(*id++, point);
this->Points->SetPoint(i, point);
}
}
VTK_ABI_NAMESPACE_END
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