vtkRotationalExtrusionFilter Class Reference

#include <vtkRotationalExtrusionFilter.h>

Inheritance diagram for vtkRotationalExtrusionFilter:

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Collaboration diagram for vtkRotationalExtrusionFilter:

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List of all members.

Detailed Description

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.
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.

See also:: vtkLinearExtrusionFilter

Examples:: vtkRotationalExtrusionFilter (Examples)

Tests:: vtkRotationalExtrusionFilter (Tests)

Definition at line 68 of file vtkRotationalExtrusionFilter.h.


Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	SetResolution (int)
virtual int	GetResolution ()

virtual void	SetCapping (int)
virtual int	GetCapping ()
virtual void	CappingOn ()
virtual void	CappingOff ()

virtual void	SetAngle (double)
virtual double	GetAngle ()

virtual void	SetTranslation (double)
virtual double	GetTranslation ()

virtual void	SetDeltaRadius (double)
virtual double	GetDeltaRadius ()
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkRotationalExtrusionFilter *	SafeDownCast (vtkObject *o)
static vtkRotationalExtrusionFilter *	New ()
Protected Member Functions
	vtkRotationalExtrusionFilter ()
	~vtkRotationalExtrusionFilter ()
int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
Protected Attributes
int	Resolution
int	Capping
double	Angle
double	Translation
double	DeltaRadius

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkRotationalExtrusionFilter::Superclass

Reimplemented from vtkPolyDataAlgorithm.

Definition at line 71 of file vtkRotationalExtrusionFilter.h.

Constructor & Destructor Documentation

vtkRotationalExtrusionFilter::vtkRotationalExtrusionFilter ( ) [protected]

vtkRotationalExtrusionFilter::~vtkRotationalExtrusionFilter ( ) [inline, protected]

Definition at line 112 of file vtkRotationalExtrusionFilter.h.

Member Function Documentation

virtual const char* vtkRotationalExtrusionFilter::GetClassName ( ) [virtual]

Reimplemented from vtkPolyDataAlgorithm.

static int vtkRotationalExtrusionFilter::IsTypeOf ( const char * name ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

virtual int vtkRotationalExtrusionFilter::IsA ( const char * name ) [virtual]

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

static vtkRotationalExtrusionFilter* vtkRotationalExtrusionFilter::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkPolyDataAlgorithm.

void vtkRotationalExtrusionFilter::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)			`[virtual]`

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkPolyDataAlgorithm.

static vtkRotationalExtrusionFilter* vtkRotationalExtrusionFilter::New ( ) [static]

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).

Reimplemented from vtkPolyDataAlgorithm.

virtual void vtkRotationalExtrusionFilter::SetResolution ( int ) [virtual]

Set/Get resolution of sweep operation. Resolution controls the number of intermediate node points.

virtual int vtkRotationalExtrusionFilter::GetResolution ( ) [virtual]

Set/Get resolution of sweep operation. Resolution controls the number of intermediate node points.

virtual void vtkRotationalExtrusionFilter::SetCapping ( int ) [virtual]

Turn on/off the capping of the skirt.

virtual int vtkRotationalExtrusionFilter::GetCapping ( ) [virtual]

Turn on/off the capping of the skirt.

virtual void vtkRotationalExtrusionFilter::CappingOn ( ) [virtual]

Turn on/off the capping of the skirt.

virtual void vtkRotationalExtrusionFilter::CappingOff ( ) [virtual]

Turn on/off the capping of the skirt.

virtual void vtkRotationalExtrusionFilter::SetAngle ( double ) [virtual]

Set/Get angle of rotation.

virtual double vtkRotationalExtrusionFilter::GetAngle ( ) [virtual]

Set/Get angle of rotation.

virtual void vtkRotationalExtrusionFilter::SetTranslation ( double ) [virtual]

Set/Get total amount of translation along the z-axis.

virtual double vtkRotationalExtrusionFilter::GetTranslation ( ) [virtual]

Set/Get total amount of translation along the z-axis.

virtual void vtkRotationalExtrusionFilter::SetDeltaRadius ( double ) [virtual]

Set/Get change in radius during sweep process.

virtual double vtkRotationalExtrusionFilter::GetDeltaRadius ( ) [virtual]

Set/Get change in radius during sweep process.

int vtkRotationalExtrusionFilter::RequestData	(	vtkInformation *	request,
		vtkInformationVector **	inputVector,
		vtkInformationVector *	outputVector
	)			`[protected, virtual]`