VTK
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
vtkPolygonalSurfaceContourLineInterpolator Class Reference

Contour interpolator for to place points on polygonal surfaces. More...

#include <vtkPolygonalSurfaceContourLineInterpolator.h>

Inheritance diagram for vtkPolygonalSurfaceContourLineInterpolator:
[legend]
Collaboration diagram for vtkPolygonalSurfaceContourLineInterpolator:
[legend]

Public Member Functions

void GetContourPointIds (vtkContourRepresentation *rep, vtkIdList *idList)
 
virtual int InterpolateLine (vtkRenderer *ren, vtkContourRepresentation *rep, int idx1, int idx2)
 
virtual int UpdateNode (vtkRenderer *, vtkContourRepresentation *, double *vtkNotUsed(node), int vtkNotUsed(idx))
 
virtual void SetDistanceOffset (double)
 
virtual double GetDistanceOffset ()
 
- Public Member Functions inherited from vtkPolyDataContourLineInterpolator
virtual vtkPolyDataCollectionGetPolys ()
 
vtkPolyDataContourLineInterpolatorNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
- Public Member Functions inherited from vtkContourLineInterpolator
virtual void GetSpan (int nodeIndex, vtkIntArray *nodeIndices, vtkContourRepresentation *rep)
 
vtkContourLineInterpolatorNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 

Static Public Member Functions

static
vtkPolygonalSurfaceContourLineInterpolator
New ()
 
- Static Public Member Functions inherited from vtkPolyDataContourLineInterpolator
static int IsTypeOf (const char *type)
 
static
vtkPolyDataContourLineInterpolator
SafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkContourLineInterpolator
static int IsTypeOf (const char *type)
 
static vtkContourLineInterpolatorSafeDownCast (vtkObjectBase *o)
 

Protected Member Functions

 vtkPolygonalSurfaceContourLineInterpolator ()
 
 ~vtkPolygonalSurfaceContourLineInterpolator ()
 
- Protected Member Functions inherited from vtkPolyDataContourLineInterpolator
 vtkPolyDataContourLineInterpolator ()
 
 ~vtkPolyDataContourLineInterpolator ()
 
- Protected Member Functions inherited from vtkContourLineInterpolator
 vtkContourLineInterpolator ()
 
 ~vtkContourLineInterpolator ()
 

Protected Attributes

double DistanceOffset
 
- Protected Attributes inherited from vtkPolyDataContourLineInterpolator
vtkPolyDataCollectionPolys
 
typedef
vtkPolyDataContourLineInterpolator 
Superclass
 
static int IsTypeOf (const char *type)
 
static
vtkPolygonalSurfaceContourLineInterpolator
SafeDownCast (vtkObjectBase *o)
 
virtual int IsA (const char *type)
 
vtkPolygonalSurfaceContourLineInterpolatorNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
virtual vtkObjectBase * NewInstanceInternal () const
 

Detailed Description

Contour interpolator for to place points on polygonal surfaces.

vtkPolygonalSurfaceContourLineInterpolator interpolates and places contour points on polygonal surfaces. The class interpolates nodes by computing a graph geodesic laying on the polygonal data. By graph Geodesic, we mean that the line interpolating the two end points traverses along on the mesh edges so as to form the shortest path. A Dijkstra algorithm is used to compute the path. See vtkDijkstraGraphGeodesicPath.

The class is mean to be used in conjunction with vtkPolygonalSurfacePointPlacer. The reason for this weak coupling is a performance issue, both classes need to perform a cell pick, and coupling avoids multiple cell picks (cell picks are slow).

Warning
You should have computed cell normals for the input polydata.
See Also
vtkDijkstraGraphGeodesicPath, vtkPolyDataNormals
Tests:
vtkPolygonalSurfaceContourLineInterpolator (Tests)

Definition at line 51 of file vtkPolygonalSurfaceContourLineInterpolator.h.

Member Typedef Documentation

Standard methods for instances of this class.

Definition at line 56 of file vtkPolygonalSurfaceContourLineInterpolator.h.

Constructor & Destructor Documentation

vtkPolygonalSurfaceContourLineInterpolator::vtkPolygonalSurfaceContourLineInterpolator ( )
protected
vtkPolygonalSurfaceContourLineInterpolator::~vtkPolygonalSurfaceContourLineInterpolator ( )
protected

Member Function Documentation

static int vtkPolygonalSurfaceContourLineInterpolator::IsTypeOf ( const char *  type)
static

Standard methods for instances of this class.

virtual int vtkPolygonalSurfaceContourLineInterpolator::IsA ( const char *  type)
virtual

Standard methods for instances of this class.

Reimplemented from vtkPolyDataContourLineInterpolator.

static vtkPolygonalSurfaceContourLineInterpolator* vtkPolygonalSurfaceContourLineInterpolator::SafeDownCast ( vtkObjectBase *  o)
static

Standard methods for instances of this class.

virtual vtkObjectBase* vtkPolygonalSurfaceContourLineInterpolator::NewInstanceInternal ( ) const
protectedvirtual

Standard methods for instances of this class.

Reimplemented from vtkPolyDataContourLineInterpolator.

vtkPolygonalSurfaceContourLineInterpolator* vtkPolygonalSurfaceContourLineInterpolator::NewInstance ( ) const

Standard methods for instances of this class.

void vtkPolygonalSurfaceContourLineInterpolator::PrintSelf ( ostream &  os,
vtkIndent  indent 
)

Standard methods for instances of this class.

static vtkPolygonalSurfaceContourLineInterpolator* vtkPolygonalSurfaceContourLineInterpolator::New ( )
static
virtual int vtkPolygonalSurfaceContourLineInterpolator::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 vtkPolyDataContourLineInterpolator.

virtual int vtkPolygonalSurfaceContourLineInterpolator::UpdateNode ( vtkRenderer *  ,
vtkContourRepresentation ,
double *  vtkNotUsednode,
int   vtkNotUsedidx 
)
virtual

The interpolator is given a chance to update the node. vtkImageContourLineInterpolator updates the idx'th node in the contour, so it automatically sticks to edges in the vicinity as the user constructs the contour. Returns 0 if the node (world position) is unchanged.

Implements vtkPolyDataContourLineInterpolator.

virtual void vtkPolygonalSurfaceContourLineInterpolator::SetDistanceOffset ( double  )
virtual

Height offset at which points may be placed on the polygonal surface. If you specify a non-zero value here, be sure to have computed vertex normals on your input polygonal data. (easily done with vtkPolyDataNormals).

virtual double vtkPolygonalSurfaceContourLineInterpolator::GetDistanceOffset ( )
virtual

Height offset at which points may be placed on the polygonal surface. If you specify a non-zero value here, be sure to have computed vertex normals on your input polygonal data. (easily done with vtkPolyDataNormals).

void vtkPolygonalSurfaceContourLineInterpolator::GetContourPointIds ( vtkContourRepresentation rep,
vtkIdList *  idList 
)

Get the contour point ids. These point ids correspond to those on the polygonal surface

Member Data Documentation

double vtkPolygonalSurfaceContourLineInterpolator::DistanceOffset
protected

Draw the polyline at a certain height (in the direction of the vertex normal) above the polydata.

Definition at line 102 of file vtkPolygonalSurfaceContourLineInterpolator.h.


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