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vtkLinearExtrusionFilter Class Reference

#include <vtkLinearExtrusionFilter.h>

Inheritance diagram for vtkLinearExtrusionFilter:

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Collaboration diagram for vtkLinearExtrusionFilter:

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List of all members.

Detailed Description

sweep polygonal data creating a "skirt" from free edges and lines, and lines from vertices

vtkLinearExtrusionFilter is a modeling filter. It takes polygonal data as input and generates polygonal data on output. The input dataset is swept according to some extrusion function and creates new polygonal primitives. These primitives form a "skirt" or swept surface. For example, sweeping a line results in a quadrilateral, and sweeping a triangle creates a "wedge".

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" ivar. Also, you can extrude in the direction of a user specified vector, towards a point, or in the direction of vertex normals (normals must be provided - use vtkPolyDataNormals if necessary). The amount of extrusion is controlled by the "ScaleFactor" 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 create 3D fonts, 3D irregular bar charts, or to model 2 1/2D objects like punched plates. It also can be used to create solid objects from 2D polygonal meshes.

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.
See also:
vtkRotationalExtrusionFilter
Examples:
vtkLinearExtrusionFilter (Examples)
Tests:
vtkLinearExtrusionFilter (Tests)

Definition at line 67 of file vtkLinearExtrusionFilter.h.
virtual void SetExtrusionType (int)
virtual int GetExtrusionType ()
void SetExtrusionTypeToVectorExtrusion ()
void SetExtrusionTypeToNormalExtrusion ()
void SetExtrusionTypeToPointExtrusion ()
static vtkLinearExtrusionFilterNew ()

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 SetCapping (int)
virtual int GetCapping ()
virtual void CappingOn ()
virtual void CappingOff ()
virtual void SetScaleFactor (double)
virtual double GetScaleFactor ()
virtual void SetVector (double, double, double)
virtual void SetVector (double[3])
virtual double * GetVector ()
virtual void GetVector (double data[3])
virtual void SetExtrusionPoint (double, double, double)
virtual void SetExtrusionPoint (double[3])
virtual double * GetExtrusionPoint ()
virtual void GetExtrusionPoint (double data[3])

Static Public Member Functions

static int IsTypeOf (const char *type)
static vtkLinearExtrusionFilterSafeDownCast (vtkObject *o)

Protected Member Functions

 vtkLinearExtrusionFilter ()
 ~vtkLinearExtrusionFilter ()
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
double * ViaNormal (double x[3], vtkIdType id, vtkDataArray *normals)
double * ViaVector (double x[3], vtkIdType id, vtkDataArray *normals=0)
double * ViaPoint (double x[3], vtkIdType id, vtkDataArray *normals=0)

Protected Attributes

int ExtrusionType
int Capping
double ScaleFactor
double Vector [3]
double ExtrusionPoint [3]
double *(vtkLinearExtrusionFilter::* ExtrudePoint )(double x[3], vtkIdType id, vtkDataArray *normals)


Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkLinearExtrusionFilter::Superclass
 

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

Definition at line 70 of file vtkLinearExtrusionFilter.h.


Constructor & Destructor Documentation

vtkLinearExtrusionFilter::vtkLinearExtrusionFilter  )  [protected]
 

vtkLinearExtrusionFilter::~vtkLinearExtrusionFilter  )  [inline, protected]
 

Definition at line 118 of file vtkLinearExtrusionFilter.h.


Member Function Documentation

virtual const char* vtkLinearExtrusionFilter::GetClassName  )  [virtual]
 

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

static int vtkLinearExtrusionFilter::IsTypeOf const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

virtual int vtkLinearExtrusionFilter::IsA const char *  type  )  [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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

static vtkLinearExtrusionFilter* vtkLinearExtrusionFilter::SafeDownCast vtkObject o  )  [static]
 

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

void vtkLinearExtrusionFilter::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.

Reimplemented in vtkPLinearExtrusionFilter.

static vtkLinearExtrusionFilter* vtkLinearExtrusionFilter::New  )  [static]
 

Create object with normal extrusion type, capping on, scale factor=1.0, vector (0,0,1), and extrusion point (0,0,0).

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

virtual void vtkLinearExtrusionFilter::SetExtrusionType int   )  [virtual]
 

Set/Get the type of extrusion.

virtual int vtkLinearExtrusionFilter::GetExtrusionType  )  [virtual]
 

Set/Get the type of extrusion.

void vtkLinearExtrusionFilter::SetExtrusionTypeToVectorExtrusion  )  [inline]
 

Set/Get the type of extrusion.

Definition at line 81 of file vtkLinearExtrusionFilter.h.

References VTK_VECTOR_EXTRUSION.

void vtkLinearExtrusionFilter::SetExtrusionTypeToNormalExtrusion  )  [inline]
 

Set/Get the type of extrusion.

Definition at line 83 of file vtkLinearExtrusionFilter.h.

References VTK_NORMAL_EXTRUSION.

void vtkLinearExtrusionFilter::SetExtrusionTypeToPointExtrusion  )  [inline]
 

Set/Get the type of extrusion.

Definition at line 85 of file vtkLinearExtrusionFilter.h.

References VTK_POINT_EXTRUSION.

virtual void vtkLinearExtrusionFilter::SetCapping int   )  [virtual]
 

Turn on/off the capping of the skirt.

virtual int vtkLinearExtrusionFilter::GetCapping  )  [virtual]
 

Turn on/off the capping of the skirt.

virtual void vtkLinearExtrusionFilter::CappingOn  )  [virtual]
 

Turn on/off the capping of the skirt.

virtual void vtkLinearExtrusionFilter::CappingOff  )  [virtual]
 

Turn on/off the capping of the skirt.

virtual void vtkLinearExtrusionFilter::SetScaleFactor double   )  [virtual]
 

Set/Get extrusion scale factor,

virtual double vtkLinearExtrusionFilter::GetScaleFactor  )  [virtual]
 

Set/Get extrusion scale factor,

virtual void vtkLinearExtrusionFilter::SetVector double  ,
double  ,
double 
[virtual]
 

Set/Get extrusion vector. Only needs to be set if VectorExtrusion is turned on.

virtual void vtkLinearExtrusionFilter::SetVector double  [3]  )  [virtual]
 

Set/Get extrusion vector. Only needs to be set if VectorExtrusion is turned on.

virtual double* vtkLinearExtrusionFilter::GetVector  )  [virtual]
 

Set/Get extrusion vector. Only needs to be set if VectorExtrusion is turned on.

virtual void vtkLinearExtrusionFilter::GetVector double  data[3]  )  [virtual]
 

Set/Get extrusion vector. Only needs to be set if VectorExtrusion is turned on.

virtual void vtkLinearExtrusionFilter::SetExtrusionPoint double  ,
double  ,
double 
[virtual]
 

Set/Get extrusion point. Only needs to be set if PointExtrusion is turned on. This is the point towards which extrusion occurs.

virtual void vtkLinearExtrusionFilter::SetExtrusionPoint double  [3]  )  [virtual]
 

Set/Get extrusion point. Only needs to be set if PointExtrusion is turned on. This is the point towards which extrusion occurs.

virtual double* vtkLinearExtrusionFilter::GetExtrusionPoint  )  [virtual]
 

Set/Get extrusion point. Only needs to be set if PointExtrusion is turned on. This is the point towards which extrusion occurs.

virtual void vtkLinearExtrusionFilter::GetExtrusionPoint double  data[3]  )  [virtual]
 

Set/Get extrusion point. Only needs to be set if PointExtrusion is turned on. This is the point towards which extrusion occurs.

virtual int vtkLinearExtrusionFilter::RequestData vtkInformation ,
vtkInformationVector **  ,
vtkInformationVector
[protected, virtual]
 

This is called by the superclass. This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkPLinearExtrusionFilter.

double* vtkLinearExtrusionFilter::ViaNormal double  x[3],
vtkIdType  id,
vtkDataArray normals
[protected]
 

double* vtkLinearExtrusionFilter::ViaVector double  x[3],
vtkIdType  id,
vtkDataArray normals = 0
[protected]
 

double* vtkLinearExtrusionFilter::ViaPoint double  x[3],
vtkIdType  id,
vtkDataArray normals = 0
[protected]
 


Member Data Documentation

int vtkLinearExtrusionFilter::ExtrusionType [protected]
 

Definition at line 121 of file vtkLinearExtrusionFilter.h.

int vtkLinearExtrusionFilter::Capping [protected]
 

Definition at line 122 of file vtkLinearExtrusionFilter.h.

double vtkLinearExtrusionFilter::ScaleFactor [protected]
 

Definition at line 123 of file vtkLinearExtrusionFilter.h.

double vtkLinearExtrusionFilter::Vector[3] [protected]
 

Definition at line 124 of file vtkLinearExtrusionFilter.h.

double vtkLinearExtrusionFilter::ExtrusionPoint[3] [protected]
 

Definition at line 125 of file vtkLinearExtrusionFilter.h.

double*(vtkLinearExtrusionFilter::* vtkLinearExtrusionFilter::ExtrudePoint)(double x[3], vtkIdType id, vtkDataArray *normals) [protected]
 


The documentation for this class was generated from the following file:
Generated on Mon Jan 21 23:58:45 2008 for VTK by  doxygen 1.4.3-20050530