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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCylinder.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.
=========================================================================*/
/**
* @class vtkCylinder
* @brief implicit function for a cylinder
*
* vtkCylinder computes the implicit function and function gradient
* for a cylinder using F(r)=r^2-Radius^2. vtkCylinder is a concrete
* implementation of vtkImplicitFunction. By default the Cylinder is
* centered at the origin and the axis of rotation is along the
* y-axis. You can redefine the center and axis of rotation by setting
* the Center and Axis data members. (Note that it is also possible to
* use the superclass' vtkImplicitFunction transformation matrix if
* necessary to reposition by using FunctionValue() and
* FunctionGradient().)
*
* @warning
* The cylinder is infinite in extent. To truncate the cylinder in
* modeling operations use the vtkImplicitBoolean in combination with
* clipping planes.
*/
#ifndef vtkCylinder_h
#define vtkCylinder_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkImplicitFunction.h"
class VTKCOMMONDATAMODEL_EXPORT vtkCylinder : public vtkImplicitFunction
{
public:
vtkTypeMacro(vtkCylinder, vtkImplicitFunction);
void PrintSelf(ostream& os, vtkIndent indent) override;
/**
* Construct cylinder radius of 0.5; centered at origin with axis
* along y coordinate axis.
*/
static vtkCylinder* New();
//@{
/**
* Evaluate cylinder equation F(r) = r^2 - Radius^2.
*/
using vtkImplicitFunction::EvaluateFunction;
double EvaluateFunction(double x[3]) override;
//@}
/**
* Evaluate cylinder function gradient.
*/
void EvaluateGradient(double x[3], double g[3]) override;
//@{
/**
* Set/Get the cylinder radius.
*/
vtkSetMacro(Radius, double);
vtkGetMacro(Radius, double);
//@}
//@{
/**
* Set/Get the cylinder center.
*/
vtkSetVector3Macro(Center, double);
vtkGetVector3Macro(Center, double);
//@}
//@{
/**
* Set/Get the axis of the cylinder. If the axis is not specified as
* a unit vector, it will be normalized. If zero-length axis vector
* is used as input to this method, it will be ignored.
*/
void SetAxis(double ax, double ay, double az);
void SetAxis(double a[3]);
vtkGetVector3Macro(Axis, double);
//@}
protected:
vtkCylinder();
~vtkCylinder() override {}
double Radius;
double Center[3];
double Axis[3];
private:
vtkCylinder(const vtkCylinder&) = delete;
void operator=(const vtkCylinder&) = delete;
};
#endif
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