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vtkCylindricalCoordinates.cpp
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vtkCylindricalCoordinates.cpp
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCylindricalCoordinates.cpp
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.
=========================================================================*/
// Copyright 2014-2016 Etienne Tang
#include "vtkCylindricalCoordinates.h"
#include "vtkObjectFactory.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkPointSet.h"
#include "vtkPoints.h"
#include "vtkDoubleArray.h"
#include "vtkPointData.h"
#include "vtkMath.h"
vtkStandardNewMacro(vtkCylindricalCoordinates)
vtkCylindricalCoordinates::vtkCylindricalCoordinates()
{
}
vtkCylindricalCoordinates::~vtkCylindricalCoordinates()
{
}
void vtkCylindricalCoordinates::PrintSelf(ostream& os, vtkIndent indent)
{
os << "vtkCylindricalCoordinates\n";
}
int vtkCylindricalCoordinates::RequestData(vtkInformation* request,
vtkInformationVector** inVector, vtkInformationVector* outVector)
{
vtkInformation* inInfo = inVector[0]->GetInformationObject(0);
if(!inInfo)
{
return 0;
}
vtkPointSet* inData = vtkPointSet::SafeDownCast(
inInfo->Get(vtkDataObject::DATA_OBJECT()));
if(!inData)
{
return 0;
}
vtkInformation* outInfo = outVector->GetInformationObject(0);
vtkPointSet* outData = vtkPointSet::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
if(!outData)
{
return 0;
}
outData->ShallowCopy(inData);
vtkPoints* pts = outData->GetPoints();
vtkDoubleArray* R = vtkDoubleArray::New();
vtkDoubleArray* theta = vtkDoubleArray::New();
int npts = outData->GetNumberOfPoints();
R->SetNumberOfComponents(1);
theta->SetNumberOfComponents(1);
R->SetNumberOfTuples(npts);
theta->SetNumberOfTuples(npts);
for(int i = 0; i < npts; i++)
{
double coords[3];
pts->GetPoint(i, coords);
double tmp_R = sqrt(coords[1]*coords[1] + coords[2]*coords[2]);
double tmp_theta = atan2(coords[2], coords[1]);
R->SetTuple(i, &tmp_R);
theta->SetTuple(i, &tmp_theta);
}
R->SetName("R");
theta->SetName("theta");
if(outData->GetPointData()->HasArray("R"))
{
outData->GetPointData()->RemoveArray("R");
}
if(outData->GetPointData()->HasArray("theta"))
{
outData->GetPointData()->RemoveArray("theta");
}
outData->GetPointData()->AddArray(R);
outData->GetPointData()->AddArray(theta);
R->Delete();
theta->Delete();
return 1;
}