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/*=========================================================================
Program: Visualization Toolkit
Module: vtkSphericalTransform.h
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 vtkSphericalTransform - spherical to rectangular coords and back
// .SECTION Description
// vtkSphericalTransform will convert (r,phi,theta) coordinates to
// (x,y,z) coordinates and back again. The angles are given in radians.
// By default, it converts spherical coordinates to rectangular, but
// GetInverse() returns a transform that will do the opposite. The equation
// that is used is x = r*sin(phi)*cos(theta), y = r*sin(phi)*sin(theta),
// z = r*cos(phi).
// .SECTION Caveats
// This transform is not well behaved along the line x=y=0 (i.e. along
// the z-axis)
// .SECTION see also
// vtkCylindricalTransform vtkGeneralTransform
#ifndef __vtkSphericalTransform_h
#define __vtkSphericalTransform_h
#include "vtkWarpTransform.h"
class VTK_COMMON_EXPORT vtkSphericalTransform : public vtkWarpTransform
{
public:
static vtkSphericalTransform *New();
vtkTypeMacro(vtkSphericalTransform,vtkWarpTransform);
virtual void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Make another transform of the same type.
vtkAbstractTransform *MakeTransform();
protected:
vtkSphericalTransform();
~vtkSphericalTransform();
// Description:
// Copy this transform from another of the same type.
void InternalDeepCopy(vtkAbstractTransform *transform);
// Description:
// Internal functions for calculating the transformation.
void ForwardTransformPoint(const float in[3], float out[3]);
void ForwardTransformPoint(const double in[3], double out[3]);
void ForwardTransformDerivative(const float in[3], float out[3],
float derivative[3][3]);
void ForwardTransformDerivative(const double in[3], double out[3],
double derivative[3][3]);
void InverseTransformPoint(const float in[3], float out[3]);
void InverseTransformPoint(const double in[3], double out[3]);
void InverseTransformDerivative(const float in[3], float out[3],
float derivative[3][3]);
void InverseTransformDerivative(const double in[3], double out[3],
double derivative[3][3]);
private:
vtkSphericalTransform(const vtkSphericalTransform&); // Not implemented.
void operator=(const vtkSphericalTransform&); // Not implemented.
};
#endif
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