vtkDijkstraGraphGeodesicPath Class Reference

#include <vtkDijkstraGraphGeodesicPath.h>

Inheritance diagram for vtkDijkstraGraphGeodesicPath:

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Collaboration diagram for vtkDijkstraGraphGeodesicPath:

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List of all members.

Detailed Description

Dijkstra algorithm to compute the graph geodesic.

Takes as input a polygonal mesh and performs a single source shortest path calculation. Dijkstra's algorithm is used. The implementation is similar to the one described in Introduction to Algorithms (Second Edition) by Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest, and Cliff Stein, published by MIT Press and McGraw-Hill. Some minor enhancement are added though. All vertices are not pushed on the heap at start, instead a front set is maintained. The heap is implemented as a binary heap. The output of the filter is a set of lines describing the shortest path from StartVertex to EndVertex.

Warning:: The input polydata must have only triangle cells.

Thanks:: The class was contributed by Rasmus Paulsen. www.imm.dtu.dk/~rrp/VTK . Also thanks to Alexandre Gouaillard and Shoaib Ghias for bug fixes and enhancements.

Definition at line 45 of file vtkDijkstraGraphGeodesicPath.h.


typedef vtkGraphGeodesicPath	Superclass
static int	IsTypeOf (const char *type)
static vtkDijkstraGraphGeodesicPath *	SafeDownCast (vtkObject *o)
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
Public Member Functions
virtual double	GetGeodesicLength ()
virtual void	GetCumulativeWeights (vtkDoubleArray *weights)

virtual vtkIdList *	GetIdList ()

virtual void	SetStopWhenEndReached (int)
virtual int	GetStopWhenEndReached ()
virtual void	StopWhenEndReachedOn ()
virtual void	StopWhenEndReachedOff ()

virtual void	SetUseScalarWeights (int)
virtual int	GetUseScalarWeights ()
virtual void	UseScalarWeightsOn ()
virtual void	UseScalarWeightsOff ()

virtual void	SetRepelPathFromVertices (int)
virtual int	GetRepelPathFromVertices ()
virtual void	RepelPathFromVerticesOn ()
virtual void	RepelPathFromVerticesOff ()

virtual void	SetRepelVertices (vtkPoints *)
virtual vtkPoints *	GetRepelVertices ()
Static Public Member Functions
static vtkDijkstraGraphGeodesicPath *	New ()
Protected Member Functions
	vtkDijkstraGraphGeodesicPath ()
	~vtkDijkstraGraphGeodesicPath ()
virtual int	RequestData (vtkInformation , vtkInformationVector , vtkInformationVector )
virtual void	BuildAdjacency (vtkDataSet *inData)
virtual double	CalculateStaticEdgeCost (vtkDataSet *inData, vtkIdType u, vtkIdType v)
virtual double	CalculateDynamicEdgeCost (vtkDataSet *, vtkIdType, vtkIdType)
void	Initialize (vtkDataSet *inData)
void	Reset ()
virtual void	ShortestPath (vtkDataSet *inData, int startv, int endv)
void	Relax (const int &u, const int &v, const double &w)
void	TraceShortestPath (vtkDataSet inData, vtkPolyData outPoly, vtkIdType startv, vtkIdType endv)
Protected Attributes
vtkTimeStamp	AdjacencyBuildTime
int	NumberOfVertices
vtkIdList *	IdList
vtkDijkstraGraphInternals *	Internals
int	StopWhenEndReached
int	UseScalarWeights
int	RepelPathFromVertices
vtkPoints *	RepelVertices

Member Typedef Documentation

typedef vtkGraphGeodesicPath vtkDijkstraGraphGeodesicPath::Superclass

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

Definition at line 55 of file vtkDijkstraGraphGeodesicPath.h.

Constructor & Destructor Documentation

vtkDijkstraGraphGeodesicPath::vtkDijkstraGraphGeodesicPath ( ) [protected]

vtkDijkstraGraphGeodesicPath::~vtkDijkstraGraphGeodesicPath ( ) [protected]

Member Function Documentation

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

Instantiate the class

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkDijkstraImageGeodesicPath.

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

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

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

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

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

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

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

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

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

Standard methids for printing and determining type information.

Reimplemented from vtkGraphGeodesicPath.

Reimplemented in vtkDijkstraImageGeodesicPath.

virtual vtkIdList* vtkDijkstraGraphGeodesicPath::GetIdList ( ) [virtual]

The vertex ids (of the input polydata) on the shortest path

virtual void vtkDijkstraGraphGeodesicPath::SetStopWhenEndReached ( int ) [virtual]

Stop when the end vertex is reached or calculate shortest path to all vertices

virtual int vtkDijkstraGraphGeodesicPath::GetStopWhenEndReached ( ) [virtual]

Stop when the end vertex is reached or calculate shortest path to all vertices

virtual void vtkDijkstraGraphGeodesicPath::StopWhenEndReachedOn ( ) [virtual]

Stop when the end vertex is reached or calculate shortest path to all vertices

virtual void vtkDijkstraGraphGeodesicPath::StopWhenEndReachedOff ( ) [virtual]

Stop when the end vertex is reached or calculate shortest path to all vertices

virtual void vtkDijkstraGraphGeodesicPath::SetUseScalarWeights ( int ) [virtual]

Use scalar values in the edge weight (experimental)

virtual int vtkDijkstraGraphGeodesicPath::GetUseScalarWeights ( ) [virtual]

Use scalar values in the edge weight (experimental)

virtual void vtkDijkstraGraphGeodesicPath::UseScalarWeightsOn ( ) [virtual]

Use scalar values in the edge weight (experimental)

virtual void vtkDijkstraGraphGeodesicPath::UseScalarWeightsOff ( ) [virtual]

Use scalar values in the edge weight (experimental)

virtual void vtkDijkstraGraphGeodesicPath::SetRepelPathFromVertices ( int ) [virtual]

Use the input point to repel the path by assigning high costs.

virtual int vtkDijkstraGraphGeodesicPath::GetRepelPathFromVertices ( ) [virtual]

Use the input point to repel the path by assigning high costs.

virtual void vtkDijkstraGraphGeodesicPath::RepelPathFromVerticesOn ( ) [virtual]

Use the input point to repel the path by assigning high costs.

virtual void vtkDijkstraGraphGeodesicPath::RepelPathFromVerticesOff ( ) [virtual]

Use the input point to repel the path by assigning high costs.

virtual void vtkDijkstraGraphGeodesicPath::SetRepelVertices ( vtkPoints * ) [virtual]

Specify vtkPoints to use to repel the path from.

virtual vtkPoints* vtkDijkstraGraphGeodesicPath::GetRepelVertices ( ) [virtual]

Specify vtkPoints to use to repel the path from.

virtual double vtkDijkstraGraphGeodesicPath::GetGeodesicLength ( ) [inline, virtual]

TODO: Get the total geodesic length.

Implements vtkGeodesicPath.

Definition at line 93 of file vtkDijkstraGraphGeodesicPath.h.

virtual void vtkDijkstraGraphGeodesicPath::GetCumulativeWeights ( vtkDoubleArray * weights ) [virtual]

Fill the array with the cumulative weights.

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

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

Reimplemented from vtkPolyDataAlgorithm.

Reimplemented in vtkDijkstraImageGeodesicPath.

virtual void vtkDijkstraGraphGeodesicPath::BuildAdjacency ( vtkDataSet * inData ) [protected, virtual]

Reimplemented in vtkDijkstraImageGeodesicPath.

virtual double vtkDijkstraGraphGeodesicPath::CalculateStaticEdgeCost	(	vtkDataSet *	inData,
		vtkIdType	u,
		vtkIdType	v
	)			`[protected, virtual]`

Reimplemented in vtkDijkstraImageGeodesicPath.

virtual double vtkDijkstraGraphGeodesicPath::CalculateDynamicEdgeCost	(	vtkDataSet *	,
		vtkIdType	,
		vtkIdType
	)			`[inline, protected, virtual]`

Reimplemented in vtkDijkstraImageGeodesicPath.

Definition at line 115 of file vtkDijkstraGraphGeodesicPath.h.

void vtkDijkstraGraphGeodesicPath::Initialize ( vtkDataSet * inData ) [protected]

void vtkDijkstraGraphGeodesicPath::Reset ( ) [protected]

virtual void vtkDijkstraGraphGeodesicPath::ShortestPath	(	vtkDataSet *	inData,
		int	startv,
		int	endv
	)			`[protected, virtual]`

void vtkDijkstraGraphGeodesicPath::Relax	(	const int &	u,
		const int &	v,
		const double &	w
	)			`[protected]`

void vtkDijkstraGraphGeodesicPath::TraceShortestPath	(	vtkDataSet *	inData,
		vtkPolyData *	outPoly,
		vtkIdType	startv,
		vtkIdType	endv
	)			`[protected]`

Member Data Documentation

vtkTimeStamp vtkDijkstraGraphGeodesicPath::AdjacencyBuildTime [protected]

Definition at line 108 of file vtkDijkstraGraphGeodesicPath.h.

int vtkDijkstraGraphGeodesicPath::NumberOfVertices [protected]

Definition at line 133 of file vtkDijkstraGraphGeodesicPath.h.

vtkIdList* vtkDijkstraGraphGeodesicPath::IdList [protected]

Definition at line 136 of file vtkDijkstraGraphGeodesicPath.h.

vtkDijkstraGraphInternals* vtkDijkstraGraphGeodesicPath::Internals [protected]

Definition at line 139 of file vtkDijkstraGraphGeodesicPath.h.

int vtkDijkstraGraphGeodesicPath::StopWhenEndReached [protected]

Definition at line 141 of file vtkDijkstraGraphGeodesicPath.h.

int vtkDijkstraGraphGeodesicPath::UseScalarWeights [protected]

Definition at line 142 of file vtkDijkstraGraphGeodesicPath.h.

int vtkDijkstraGraphGeodesicPath::RepelPathFromVertices [protected]

Definition at line 143 of file vtkDijkstraGraphGeodesicPath.h.

vtkPoints* vtkDijkstraGraphGeodesicPath::RepelVertices [protected]

Definition at line 145 of file vtkDijkstraGraphGeodesicPath.h.

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

dox/Graphics/vtkDijkstraGraphGeodesicPath.h

vtkDijkstraGraphGeodesicPath Class Reference

Detailed Description

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation