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vtkLinearExtrusionFilter Class Reference

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

#include <vtkLinearExtrusionFilter.h>

Inheritance diagram for vtkLinearExtrusionFilter:

[legend]Collaboration diagram for vtkLinearExtrusionFilter:

[legend]List of all members.

Public Methods
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	SetExtrusionType (int)
virtual int	GetExtrusionType ()
void	SetExtrusionTypeToVectorExtrusion ()
void	SetExtrusionTypeToNormalExtrusion ()
void	SetExtrusionTypeToPointExtrusion ()
virtual void	SetCapping (int)
virtual int	GetCapping ()
virtual void	CappingOn ()
virtual void	CappingOff ()
virtual void	SetScaleFactor (float)
virtual float	GetScaleFactor ()
virtual void	SetVector (float, float, float)
virtual void	SetVector (float[3])
virtual float *	GetVector ()
virtual void	GetVector (float data[3])
virtual void	SetExtrusionPoint (float, float, float)
virtual void	SetExtrusionPoint (float[3])
virtual float *	GetExtrusionPoint ()
virtual void	GetExtrusionPoint (float data[3])
Static Public Methods
int	IsTypeOf (const char *type)
vtkLinearExtrusionFilter *	SafeDownCast (vtkObject *o)
vtkLinearExtrusionFilter *	New ()
Protected Methods
	vtkLinearExtrusionFilter ()
	~vtkLinearExtrusionFilter ()
void	Execute ()
float *	ViaNormal (float x[3], vtkIdType id, vtkDataArray *normals)
float *	ViaVector (float x[3], vtkIdType id, vtkDataArray *normals=0)
float *	ViaPoint (float x[3], vtkIdType id, vtkDataArray *normals=0)
Protected Attributes
int	ExtrusionType
int	Capping
float	ScaleFactor
float	Vector [3]
float	ExtrusionPoint [3]
float *(vtkLinearExtrusionFilter::*	ExtrudePoint )(float x[3], vtkIdType id, vtkDataArray *normals)

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Detailed Description

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

Date:

2001/11/13 14:13:49

Revision:

1.38

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

Tests:

vtkLinearExtrusionFilter (Tests)

Definition at line 90 of file vtkLinearExtrusionFilter.h.

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Constructor & Destructor Documentation

vtkLinearExtrusionFilter::vtkLinearExtrusionFilter (    )  [protected]

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

Definition at line 141 of file vtkLinearExtrusionFilter.h.

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Member Function Documentation

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

Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkPolyDataToPolyDataFilter. Reimplemented in vtkPLinearExtrusionFilter.

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 vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkPolyDataToPolyDataFilter. 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 vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkPolyDataToPolyDataFilter. Reimplemented in vtkPLinearExtrusionFilter.

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

Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Reimplemented from vtkPolyDataToPolyDataFilter. 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 vtkSource. Reimplemented in vtkPLinearExtrusionFilter.

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 vtkPolyDataSource. 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 104 of file vtkLinearExtrusionFilter.h.

void vtkLinearExtrusionFilter::SetExtrusionTypeToNormalExtrusion (    )  [inline]

Set/Get the type of extrusion. Definition at line 106 of file vtkLinearExtrusionFilter.h.

void vtkLinearExtrusionFilter::SetExtrusionTypeToPointExtrusion (    )  [inline]

Set/Get the type of extrusion. Definition at line 108 of file vtkLinearExtrusionFilter.h.

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 (  float    )  [virtual]

Set/Get extrusion scale factor,

virtual float vtkLinearExtrusionFilter::GetScaleFactor (    )  [virtual]

Set/Get extrusion scale factor,

virtual void vtkLinearExtrusionFilter::SetVector (  float   , float   , float    )  [virtual]

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

virtual void vtkLinearExtrusionFilter::SetVector (  float   [3] )  [virtual]

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

virtual float* vtkLinearExtrusionFilter::GetVector (    )  [virtual]

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

virtual void vtkLinearExtrusionFilter::GetVector (  float    data[3] )  [virtual]

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

virtual void vtkLinearExtrusionFilter::SetExtrusionPoint (  float   , float   , float    )  [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 (  float   [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 float* 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 (  float    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.

void vtkLinearExtrusionFilter::Execute (    )  [protected, virtual]

This method is the old style execute method Reimplemented from vtkSource. Reimplemented in vtkPLinearExtrusionFilter.

float* vtkLinearExtrusionFilter::ViaNormal (  float    x[3], vtkIdType    id, vtkDataArray *    normals )  [protected]

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

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

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Member Data Documentation

int vtkLinearExtrusionFilter::ExtrusionType [protected]

Definition at line 144 of file vtkLinearExtrusionFilter.h.

int vtkLinearExtrusionFilter::Capping [protected]

Definition at line 145 of file vtkLinearExtrusionFilter.h.

float vtkLinearExtrusionFilter::ScaleFactor [protected]

Definition at line 146 of file vtkLinearExtrusionFilter.h.

float vtkLinearExtrusionFilter::Vector[3] [protected]

Definition at line 147 of file vtkLinearExtrusionFilter.h.

float vtkLinearExtrusionFilter::ExtrusionPoint[3] [protected]

Definition at line 148 of file vtkLinearExtrusionFilter.h.

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

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The documentation for this class was generated from the following file:

• Graphics/vtkLinearExtrusionFilter.h

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