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 vtkIdListGetIdList ()
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 vtkPointsGetRepelVertices ()

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
vtkIdListIdList
vtkDijkstraGraphInternalsInternals
int StopWhenEndReached
int UseScalarWeights
int RepelPathFromVertices
vtkPointsRepelVertices

Member Typedef Documentation

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 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 112 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

Definition at line 105 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 130 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 133 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 136 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 138 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 139 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 140 of file vtkDijkstraGraphGeodesicPath.h.

Definition at line 142 of file vtkDijkstraGraphGeodesicPath.h.


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

Generated on Wed Jun 3 19:00:08 2009 for VTK by  doxygen 1.5.6