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/*=========================================================================
Program: ParaView
Module: vtkTableToPolyData.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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 "vtkTableToPolyData.h"
#include "vtkDoubleArray.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkTable.h"
#include "vtkCellArray.h"
#include "vtkInformation.h"
vtkStandardNewMacro(vtkTableToPolyData);
//----------------------------------------------------------------------------
vtkTableToPolyData::vtkTableToPolyData()
{
this->XColumn = 0;
this->YColumn = 0;
this->ZColumn = 0;
this->XColumnIndex = -1;
this->YColumnIndex = -1;
this->ZColumnIndex = -1;
this->XComponent = 0;
this->YComponent = 0;
this->ZComponent = 0;
this->Create2DPoints = 0;
this->PreserveCoordinateColumnsAsDataArrays = false;
}
//----------------------------------------------------------------------------
vtkTableToPolyData::~vtkTableToPolyData()
{
this->SetXColumn(0);
this->SetYColumn(0);
this->SetZColumn(0);
}
//----------------------------------------------------------------------------
int vtkTableToPolyData::FillInputPortInformation(
int vtkNotUsed(port), vtkInformation* info)
{
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkTable");
return 1;
}
//----------------------------------------------------------------------------
int vtkTableToPolyData::RequestData(vtkInformation* vtkNotUsed(request),
vtkInformationVector** inputVector, vtkInformationVector* outputVector)
{
vtkTable* input = vtkTable::GetData(inputVector[0], 0);
vtkPolyData* output = vtkPolyData::GetData(outputVector, 0);
if (input->GetNumberOfRows() == 0)
{
// empty input.
return 1;
}
vtkDataArray* xarray = NULL;
vtkDataArray* yarray = NULL;
vtkDataArray* zarray = NULL;
if(this->XColumn && this->YColumn)
{
xarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumnByName(this->XColumn));
yarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumnByName(this->YColumn));
zarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumnByName(this->ZColumn));
}
else if(this->XColumnIndex >= 0)
{
xarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumn(this->XColumnIndex));
yarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumn(this->YColumnIndex));
zarray = vtkArrayDownCast<vtkDataArray>(
input->GetColumn(this->ZColumnIndex));
}
// zarray is optional
if(this->Create2DPoints)
{
if (!xarray || !yarray)
{
vtkErrorMacro("Failed to locate the columns to use for the point"
" coordinates");
return 0;
}
}
else
{
if (!xarray || !yarray || !zarray)
{
vtkErrorMacro("Failed to locate the columns to use for the point"
" coordinates");
return 0;
}
}
vtkPoints* newPoints = vtkPoints::New();
if (xarray == yarray && yarray == zarray &&
this->XComponent == 0 &&
this->YComponent == 1 &&
this->ZComponent == 2 &&
xarray->GetNumberOfComponents() == 3)
{
newPoints->SetData(xarray);
}
else
{
// Ideally we determine the smallest data type that can contain the values
// in all the 3 arrays. For now I am just going with doubles.
vtkDoubleArray* newData = vtkDoubleArray::New();
newData->SetNumberOfComponents(3);
newData->SetNumberOfTuples(input->GetNumberOfRows());
vtkIdType numtuples = newData->GetNumberOfTuples();
if(this->Create2DPoints)
{
for (vtkIdType cc=0; cc < numtuples; cc++)
{
newData->SetComponent(cc, 0, xarray->GetComponent(cc, this->XComponent));
newData->SetComponent(cc, 1, yarray->GetComponent(cc, this->YComponent));
newData->SetComponent(cc, 2, 0.0);
}
}
else
{
for (vtkIdType cc=0; cc < numtuples; cc++)
{
newData->SetComponent(cc, 0, xarray->GetComponent(cc, this->XComponent));
newData->SetComponent(cc, 1, yarray->GetComponent(cc, this->YComponent));
newData->SetComponent(cc, 2, zarray->GetComponent(cc, this->ZComponent));
}
}
newPoints->SetData(newData);
newData->Delete();
}
output->SetPoints(newPoints);
newPoints->Delete();
// Now create a poly-vertex cell will all the points.
vtkIdType numPts = newPoints->GetNumberOfPoints();
vtkIdType *ptIds = new vtkIdType[numPts];
for (vtkIdType cc=0; cc < numPts; cc++)
{
ptIds[cc] = cc;
}
output->Allocate(1);
output->InsertNextCell(VTK_POLY_VERTEX, numPts, ptIds);
delete [] ptIds;
// Add all other columns as point data.
for (int cc=0; cc < input->GetNumberOfColumns(); cc++)
{
vtkAbstractArray* arr = input->GetColumn(cc);
if(this->PreserveCoordinateColumnsAsDataArrays)
{
output->GetPointData()->AddArray(arr);
}
else if (arr != xarray && arr != yarray && arr != zarray)
{
output->GetPointData()->AddArray(arr);
}
}
return 1;
}
//----------------------------------------------------------------------------
void vtkTableToPolyData::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "XColumn: "
<< (this->XColumn? this->XColumn : "(none)") << endl;
os << indent << "XComponent: " << this->XComponent << endl;
os << indent << "XColumnIndex: " << this->XColumnIndex << endl;
os << indent << "YColumn: "
<< (this->YColumn? this->YColumn : "(none)") << endl;
os << indent << "YComponent: " << this->YComponent << endl;
os << indent << "YColumnIndex: " << this->YColumnIndex << endl;
os << indent << "ZColumn: "
<< (this->ZColumn? this->ZColumn : "(none)") << endl;
os << indent << "ZComponent: " << this->ZComponent << endl;
os << indent << "ZColumnIndex: " << this->ZColumnIndex << endl;
os << indent << "Create2DPoints: " << (this->Create2DPoints ? "true" : "false") << endl;
os << indent << "PreserveCoordinateColumnsAsDataArrays: "
<< (this->PreserveCoordinateColumnsAsDataArrays ? "true" : "false") << endl;
}
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