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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCylindricalTransform.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 "vtkCylindricalTransform.h"
#include "vtkObjectFactory.h"
#include "vtkMath.h"
#include <math.h>
#include <stdlib.h>
vtkStandardNewMacro(vtkCylindricalTransform);
//----------------------------------------------------------------------------
vtkCylindricalTransform::vtkCylindricalTransform()
{
}
vtkCylindricalTransform::~vtkCylindricalTransform()
{
}
void vtkCylindricalTransform::PrintSelf(ostream& os, vtkIndent indent)
{
vtkWarpTransform::PrintSelf(os,indent);
}
void vtkCylindricalTransform::InternalDeepCopy(vtkAbstractTransform *transform)
{
vtkCylindricalTransform *cylindricalTransform =
static_cast<vtkCylindricalTransform *>(transform);
// copy these even though they aren't used
this->SetInverseTolerance(cylindricalTransform->InverseTolerance);
this->SetInverseIterations(cylindricalTransform->InverseIterations);
// copy the inverse flag, which is used
if (this->InverseFlag != cylindricalTransform->InverseFlag)
{
this->InverseFlag = cylindricalTransform->InverseFlag;
this->Modified();
}
}
vtkAbstractTransform *vtkCylindricalTransform::MakeTransform()
{
return vtkCylindricalTransform::New();
}
template<class T>
void vtkCylindricalToRectangular(const T inPoint[3], T outPoint[3],
T derivative[3][3])
{
T r = inPoint[0];
T sintheta = static_cast<T>(sin(inPoint[1]));
T costheta = static_cast<T>(cos(inPoint[1]));
T z = inPoint[2];
outPoint[0] = r*costheta;
outPoint[1] = r*sintheta;
outPoint[2] = z;
if (derivative)
{
derivative[0][0] = costheta;
derivative[0][1] = -r*sintheta;
derivative[0][2] = 0;
derivative[1][0] = sintheta;
derivative[1][1] = r*costheta;
derivative[1][2] = 0;
derivative[2][0] = 0;
derivative[2][1] = 0;
derivative[2][2] = 1;
}
}
template<class T>
void vtkRectangularToCylindrical(const T inPoint[3], T outPoint[3])
{
T x = inPoint[0];
T y = inPoint[1];
T z = inPoint[2];
T rr = x*x + y*y;
outPoint[0] = static_cast<T>(sqrt(rr));
if (rr == 0)
{
outPoint[1] = 0;
}
else
{
// Change range to [0, 2*Pi], otherwise the same as atan2(y, x)
outPoint[1] = static_cast<T>(vtkMath::Pi() + atan2(-y, -x));
}
outPoint[2] = z;
}
void vtkCylindricalTransform::ForwardTransformPoint(const float inPoint[3],
float outPoint[3])
{
vtkCylindricalToRectangular(inPoint, outPoint, static_cast<float (*)[3]>(0));
}
void vtkCylindricalTransform::ForwardTransformPoint(const double inPoint[3],
double outPoint[3])
{
vtkCylindricalToRectangular(inPoint, outPoint,
static_cast<double (*)[3]>(0));
}
void vtkCylindricalTransform::ForwardTransformDerivative(
const float inPoint[3],
float outPoint[3],
float derivative[3][3])
{
vtkCylindricalToRectangular(inPoint, outPoint, derivative);
}
void vtkCylindricalTransform::ForwardTransformDerivative(
const double inPoint[3],
double outPoint[3],
double derivative[3][3])
{
vtkCylindricalToRectangular(inPoint, outPoint, derivative);
}
void vtkCylindricalTransform::InverseTransformPoint(const float inPoint[3],
float outPoint[3])
{
vtkRectangularToCylindrical(inPoint, outPoint);
}
void vtkCylindricalTransform::InverseTransformPoint(const double inPoint[3],
double outPoint[3])
{
vtkRectangularToCylindrical(inPoint, outPoint);
}
void vtkCylindricalTransform::InverseTransformDerivative(
const float inPoint[3],
float outPoint[3],
float derivative[3][3])
{
float tmp[3];
vtkRectangularToCylindrical(inPoint, outPoint);
vtkCylindricalToRectangular(outPoint, tmp, derivative);
}
void vtkCylindricalTransform::InverseTransformDerivative(
const double inPoint[3],
double outPoint[3],
double derivative[3][3])
{
double tmp[3];
vtkRectangularToCylindrical(inPoint, outPoint);
vtkCylindricalToRectangular(outPoint, tmp, derivative);
}
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