vtkDijkstraImageContourLineInterpolator Class Reference

#include <vtkDijkstraImageContourLineInterpolator.h>

Inheritance diagram for vtkDijkstraImageContourLineInterpolator:

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Collaboration diagram for vtkDijkstraImageContourLineInterpolator:

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List of all members.

Detailed Description

Contour interpolator for placing points on an image.

vtkDijkstraImageContourLineInterpolator interpolates and places contour points on images. The class interpolates nodes by computing a graph lying on the image data. By graph, we mean that the line interpolating the two end points traverses along pixels so as to form a shortest path. A Dijkstra algorithm is used to compute the path.

The class is meant to be used in conjunction with vtkImageActorPointPlacer. One reason for this coupling is a performance issue: both classes need to perform a cell pick, and coupling avoids multiple cell picks (cell picks are slow). Another issue is that the interpolator may need to set the image input to its vtkDijkstraImageGeodesicPath ivar.

See also:: vtkContourWidget vtkContourLineInterpolator vtkDijkstraImageGeodesicPath

Tests:: vtkDijkstraImageContourLineInterpolator (Tests)

Definition at line 48 of file vtkDijkstraImageContourLineInterpolator.h.


typedef vtkContourLineInterpolator	Superclass
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
static int	IsTypeOf (const char *type)
static vtkDijkstraImageContourLineInterpolator *	SafeDownCast (vtkObject *o)
Public Member Functions

virtual int	InterpolateLine (vtkRenderer ren, vtkContourRepresentation rep, int idx1, int idx2)

virtual void	SetCostImage (vtkImageData *)
virtual vtkImageData *	GetCostImage ()

virtual vtkDijkstraImageGeodesicPath *	GetDijkstraImageGeodesicPath ()
Static Public Member Functions
static vtkDijkstraImageContourLineInterpolator *	New ()
Protected Member Functions
	vtkDijkstraImageContourLineInterpolator ()
	~vtkDijkstraImageContourLineInterpolator ()
Protected Attributes
vtkImageData *	CostImage
vtkDijkstraImageGeodesicPath *	DijkstraImageGeodesicPath

Member Typedef Documentation

typedef vtkContourLineInterpolator vtkDijkstraImageContourLineInterpolator::Superclass

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

Definition at line 55 of file vtkDijkstraImageContourLineInterpolator.h.

Constructor & Destructor Documentation

vtkDijkstraImageContourLineInterpolator::vtkDijkstraImageContourLineInterpolator ( ) [protected]

vtkDijkstraImageContourLineInterpolator::~vtkDijkstraImageContourLineInterpolator ( ) [protected]

Member Function Documentation

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

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

static int vtkDijkstraImageContourLineInterpolator::IsTypeOf ( const char * type ) [static]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

virtual int vtkDijkstraImageContourLineInterpolator::IsA ( const char * type ) [virtual]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

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

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

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

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

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

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

virtual int vtkDijkstraImageContourLineInterpolator::InterpolateLine	(	vtkRenderer *	ren,
		vtkContourRepresentation *	rep,
		int	idx1,
		int	idx2
	)			`[virtual]`

Subclasses that wish to interpolate a line segment must implement this. For instance vtkBezierContourLineInterpolator adds nodes between idx1 and idx2, that allow the contour to adhere to a bezier curve.

Implements vtkContourLineInterpolator.

virtual void vtkDijkstraImageContourLineInterpolator::SetCostImage ( vtkImageData * ) [virtual]

Set the image data for the vtkDijkstraImageGeodesicPath. If not set, the interpolator uses the image data input to the image actor. The image actor is obtained from the expected vtkImageActorPointPlacer.

virtual vtkImageData* vtkDijkstraImageContourLineInterpolator::GetCostImage ( ) [virtual]

Set the image data for the vtkDijkstraImageGeodesicPath. If not set, the interpolator uses the image data input to the image actor. The image actor is obtained from the expected vtkImageActorPointPlacer.

virtual vtkDijkstraImageGeodesicPath* vtkDijkstraImageContourLineInterpolator::GetDijkstraImageGeodesicPath ( ) [virtual]

access to the internal dijkstra path