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vtkVectorTopology Class Reference

mark points where the vector field vanishes (singularities exist). More...

#include <vtkVectorTopology.h>

Inheritance diagram for vtkVectorTopology:

[legend]Collaboration diagram for vtkVectorTopology:

[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	SetDistance (float)
virtual float	GetDistance ()
Static Public Methods
vtkVectorTopology *	New ()
int	IsTypeOf (const char *type)
vtkVectorTopology *	SafeDownCast (vtkObject *o)
Protected Methods
	vtkVectorTopology ()
	~vtkVectorTopology ()
	vtkVectorTopology (const vtkVectorTopology &)
void	operator= (const vtkVectorTopology &)
void	Execute ()
Protected Attributes
float	Distance

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Detailed Description

mark points where the vector field vanishes (singularities exist).

Date:

2000/12/10 20:08:27

Revision:

1.10

vtkVectorTopology is a filter that marks points where the vector field vanishes. At these points various important flow features are found, including regions of circulation, separation, etc. The region around these areas are good places to start streamlines. (The vector field vanishes in cells where the x-y-z vector components each pass through zero.)

The output of this filter is a set of vertices. These vertices mark the vector field singularities. You can use an object like vtkGlyph3D to place markers at these points, or use the vertices to initiate streamlines.

The Distance instance variable controls the accuracy of placement of the vertices. Smaller values result in greater execution times.

The input to this filter is any dataset type. The position of the vertices is found by sampling the cell in parametric space. Sampling is repeated until the Distance criterion is satisfied.

See also:

vtkGlyph3D vtkStreamLine

Definition at line 70 of file vtkVectorTopology.h.

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Constructor & Destructor Documentation

vtkVectorTopology::vtkVectorTopology (    )  [protected]

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

Definition at line 85 of file vtkVectorTopology.h.

vtkVectorTopology::vtkVectorTopology (  const vtkVectorTopology &    )  [inline, protected]

Definition at line 86 of file vtkVectorTopology.h.

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Member Function Documentation

vtkVectorTopology* vtkVectorTopology::New (    )  [static]

Construct object with distance 0.1. Reimplemented from vtkPolyDataSource.

virtual const char* vtkVectorTopology::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 vtkDataSetToPolyDataFilter.

int vtkVectorTopology::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 vtkDataSetToPolyDataFilter.

virtual int vtkVectorTopology::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 vtkDataSetToPolyDataFilter.

vtkVectorTopology* vtkVectorTopology::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 vtkDataSetToPolyDataFilter.

void vtkVectorTopology::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.

virtual void vtkVectorTopology::SetDistance (  float    )  [virtual]

Specify distance from singularity to generate point.

virtual float vtkVectorTopology::GetDistance (    )  [virtual]

void vtkVectorTopology::operator= (  const vtkVectorTopology &    )  [inline, protected]

Definition at line 87 of file vtkVectorTopology.h.

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

Reimplemented from vtkSource.

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Member Data Documentation

float vtkVectorTopology::Distance [protected]

Definition at line 90 of file vtkVectorTopology.h.

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

• contrib/vtkVectorTopology.h

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