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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRotationalExtrusionFilter.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 vtkRotationalExtrusionFilter
* @brief sweep polygonal data creating "skirt" from free edges and lines, and lines from vertices
*
* vtkRotationalExtrusionFilter is a modeling filter. It takes polygonal
* data as input and generates polygonal data on output. The input dataset
* is swept around the z-axis to create new polygonal primitives. These
* primitives form a "skirt" or swept surface. For example, sweeping a
* line results in a cylindrical shell, and sweeping a circle creates a
* torus.
*
* There are a number of control parameters for this filter. You can
* control whether the sweep of a 2D object (i.e., polygon or triangle
* strip) is capped with the generating geometry via the "Capping" instance
* variable. Also, you can control the angle of rotation, and whether
* translation along the z-axis is performed along with the rotation.
* (Translation is useful for creating "springs".) You also can adjust
* the radius of the generating geometry using the "DeltaRotation" instance
* variable.
*
* The skirt is generated by locating certain topological features. Free
* edges (edges of polygons or triangle strips only used by one polygon or
* triangle strips) generate surfaces. This is true also of lines or
* polylines. Vertices generate lines.
*
* This filter can be used to model axisymmetric objects like cylinders,
* bottles, and wine glasses; or translational/rotational symmetric objects
* like springs or corkscrews.
*
* @warning
* If the object sweeps 360 degrees, radius does not vary, and the object
* does not translate, capping is not performed. This is because the cap
* is unnecessary.
*
* @warning
* Some polygonal objects have no free edges (e.g., sphere). When swept,
* this will result in two separate surfaces if capping is on, or no surface
* if capping is off.
*
* @sa
* vtkLinearExtrusionFilter
*/
#ifndef vtkRotationalExtrusionFilter_h
#define vtkRotationalExtrusionFilter_h
#include "vtkFiltersModelingModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"
class VTKFILTERSMODELING_EXPORT vtkRotationalExtrusionFilter : public vtkPolyDataAlgorithm
{
public:
vtkTypeMacro(vtkRotationalExtrusionFilter,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
/**
* Create object with capping on, angle of 360 degrees, resolution = 12, and
* no translation along z-axis.
* vector (0,0,1), and point (0,0,0).
*/
static vtkRotationalExtrusionFilter *New();
//@{
/**
* Set/Get resolution of sweep operation. Resolution controls the number
* of intermediate node points.
*/
vtkSetClampMacro(Resolution,int,1,VTK_INT_MAX);
vtkGetMacro(Resolution,int);
//@}
//@{
/**
* Turn on/off the capping of the skirt.
*/
vtkSetMacro(Capping,int);
vtkGetMacro(Capping,int);
vtkBooleanMacro(Capping,int);
//@}
//@{
/**
* Set/Get angle of rotation.
*/
vtkSetMacro(Angle,double);
vtkGetMacro(Angle,double);
//@}
//@{
/**
* Set/Get total amount of translation along the z-axis.
*/
vtkSetMacro(Translation,double);
vtkGetMacro(Translation,double);
//@}
//@{
/**
* Set/Get change in radius during sweep process.
*/
vtkSetMacro(DeltaRadius,double);
vtkGetMacro(DeltaRadius,double);
//@}
protected:
vtkRotationalExtrusionFilter();
~vtkRotationalExtrusionFilter() {}
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int Resolution;
int Capping;
double Angle;
double Translation;
double DeltaRadius;
private:
vtkRotationalExtrusionFilter(const vtkRotationalExtrusionFilter&) VTK_DELETE_FUNCTION;
void operator=(const vtkRotationalExtrusionFilter&) VTK_DELETE_FUNCTION;
};
#endif
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