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vtkLoopSubdivisionFilter Class Reference

generate a subdivision surface using the Loop Scheme More...

#include <vtkLoopSubdivisionFilter.h>

Inheritance diagram for vtkLoopSubdivisionFilter:
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Collaboration diagram for vtkLoopSubdivisionFilter:
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Protected Member Functions

 vtkLoopSubdivisionFilter ()
 
 ~vtkLoopSubdivisionFilter ()
 
virtual int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
void GenerateSubdivisionPoints (vtkPolyData *inputDS, vtkIntArray *edgeData, vtkPoints *outputPts, vtkPointData *outputPD)
 
void GenerateEvenStencil (vtkIdType p1, vtkPolyData *polys, vtkIdList *stencilIds, double *weights)
 
void GenerateOddStencil (vtkIdType p1, vtkIdType p2, vtkPolyData *polys, vtkIdList *stencilIds, double *weights)
 
virtual int RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
- Protected Member Functions inherited from vtkApproximatingSubdivisionFilter
 vtkApproximatingSubdivisionFilter ()
 
 ~vtkApproximatingSubdivisionFilter ()
 
int RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
 
void GenerateSubdivisionCells (vtkPolyData *inputDS, vtkIntArray *edgeData, vtkCellArray *outputPolys, vtkCellData *outputCD)
 
int FindEdge (vtkPolyData *mesh, vtkIdType cellId, vtkIdType p1, vtkIdType p2, vtkIntArray *edgeData, vtkIdList *cellIds)
 
vtkIdType InterpolatePosition (vtkPoints *inputPts, vtkPoints *outputPts, vtkIdList *stencil, double *weights)
 
typedef
vtkApproximatingSubdivisionFilter 
Superclass
 
static vtkLoopSubdivisionFilterNew ()
 
static int IsTypeOf (const char *type)
 
static vtkLoopSubdivisionFilterSafeDownCast (vtkObjectBase *o)
 
virtual int IsA (const char *type)
 
vtkLoopSubdivisionFilterNewInstance () const
 
virtual vtkObjectBase * NewInstanceInternal () const
 

Additional Inherited Members

- Public Types inherited from vtkApproximatingSubdivisionFilter
typedef vtkPolyDataAlgorithm Superclass
 
- Public Member Functions inherited from vtkApproximatingSubdivisionFilter
vtkApproximatingSubdivisionFilterNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
virtual void SetNumberOfSubdivisions (int)
 
virtual int GetNumberOfSubdivisions ()
 
- Static Public Member Functions inherited from vtkApproximatingSubdivisionFilter
static int IsTypeOf (const char *type)
 
static
vtkApproximatingSubdivisionFilter
SafeDownCast (vtkObjectBase *o)
 
- Protected Attributes inherited from vtkApproximatingSubdivisionFilter
int NumberOfSubdivisions
 

Detailed Description

generate a subdivision surface using the Loop Scheme

vtkLoopSubdivisionFilter is an approximating subdivision scheme that creates four new triangles for each triangle in the mesh. The user can specify the NumberOfSubdivisions. Loop's subdivision scheme is described in: Loop, C., "Smooth Subdivision surfaces based on triangles,", Masters Thesis, University of Utah, August 1987. For a nice summary of the technique see, Hoppe, H., et. al, "Piecewise Smooth Surface Reconstruction,:, Proceedings of Siggraph 94 (Orlando, Florida, July 24-29, 1994). In COmputer Graphics Proceedings, Annual COnference Series, 1994, ACM SIGGRAPH, pp. 295-302.

The filter only operates on triangles. Users should use the vtkTriangleFilter to triangulate meshes that contain polygons or triangle strips.

The filter approximates point data using the same scheme. New triangles create at a subdivision step will have the cell data of their parent cell.

Thanks:
This work was supported by PHS Research Grant No. 1 P41 RR13218-01 from the National Center for Research Resources.
See Also
vtkApproximatingSubdivisionFilter
Tests:
vtkLoopSubdivisionFilter (Tests)

Definition at line 59 of file vtkLoopSubdivisionFilter.h.

Member Typedef Documentation

Construct object with NumberOfSubdivisions set to 1.

Definition at line 65 of file vtkLoopSubdivisionFilter.h.

Constructor & Destructor Documentation

vtkLoopSubdivisionFilter::vtkLoopSubdivisionFilter ( )
inlineprotected

Definition at line 69 of file vtkLoopSubdivisionFilter.h.

vtkLoopSubdivisionFilter::~vtkLoopSubdivisionFilter ( )
inlineprotected

Definition at line 70 of file vtkLoopSubdivisionFilter.h.

Member Function Documentation

static vtkLoopSubdivisionFilter* vtkLoopSubdivisionFilter::New ( )
static

Construct object with NumberOfSubdivisions set to 1.

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

Construct object with NumberOfSubdivisions set to 1.

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

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

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

Construct object with NumberOfSubdivisions set to 1.

virtual vtkObjectBase* vtkLoopSubdivisionFilter::NewInstanceInternal ( ) const
protectedvirtual

Construct object with NumberOfSubdivisions set to 1.

Reimplemented from vtkApproximatingSubdivisionFilter.

vtkLoopSubdivisionFilter* vtkLoopSubdivisionFilter::NewInstance ( ) const

Construct object with NumberOfSubdivisions set to 1.

virtual int vtkLoopSubdivisionFilter::RequestData ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual
void vtkLoopSubdivisionFilter::GenerateSubdivisionPoints ( vtkPolyData *  inputDS,
vtkIntArray *  edgeData,
vtkPoints *  outputPts,
vtkPointData *  outputPD 
)
protectedvirtual
void vtkLoopSubdivisionFilter::GenerateEvenStencil ( vtkIdType  p1,
vtkPolyData *  polys,
vtkIdList *  stencilIds,
double *  weights 
)
protected
void vtkLoopSubdivisionFilter::GenerateOddStencil ( vtkIdType  p1,
vtkIdType  p2,
vtkPolyData *  polys,
vtkIdList *  stencilIds,
double *  weights 
)
protected
virtual int vtkLoopSubdivisionFilter::RequestUpdateExtent ( vtkInformation *  ,
vtkInformationVector **  ,
vtkInformationVector *   
)
protectedvirtual

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