concrete dataset represents vertices, lines, polygons, and triangle strips More...
#include <vtkPolyData.h>
Public Types | |
| typedef vtkPointSet | Superclass |
 Public Types inherited from vtkPointSet | |
| typedef vtkDataSet | Superclass |
| Public Types inherited from vtkDataSet | |
| enum | FieldDataType { DATA_OBJECT_FIELD =0, POINT_DATA_FIELD =1, CELL_DATA_FIELD =2 } |
| typedef vtkDataObject | Superclass |
| Public Types inherited from vtkDataObject | |
| typedef vtkObject | Superclass |
| enum | FieldAssociations { FIELD_ASSOCIATION_POINTS, FIELD_ASSOCIATION_CELLS, FIELD_ASSOCIATION_NONE, FIELD_ASSOCIATION_POINTS_THEN_CELLS, FIELD_ASSOCIATION_VERTICES, FIELD_ASSOCIATION_EDGES, FIELD_ASSOCIATION_ROWS, NUMBER_OF_ASSOCIATIONS } |
| enum | AttributeTypes { POINT, CELL, FIELD, POINT_THEN_CELL, VERTEX, EDGE, ROW, NUMBER_OF_ATTRIBUTE_TYPES } |
| enum | FieldOperations { FIELD_OPERATION_PRESERVED, FIELD_OPERATION_REINTERPOLATED, FIELD_OPERATION_MODIFIED, FIELD_OPERATION_REMOVED } |
| Public Types inherited from vtkObject | |
| typedef vtkObjectBase | Superclass |
Protected Member Functions | |
| virtual vtkObjectBase * | NewInstanceInternal () const |
| vtkPolyData () | |
| ~vtkPolyData () | |
| Protected Member Functions inherited from vtkPointSet | |
| vtkPointSet () | |
| ~vtkPointSet () | |
| virtual void | ReportReferences (vtkGarbageCollector *) |
| Protected Member Functions inherited from vtkDataSet | |
| vtkDataSet () | |
| ~vtkDataSet () | |
| virtual void | ComputeScalarRange () |
| bool | IsAnyBitSet (vtkUnsignedCharArray *a, int bitFlag) |
| Protected Member Functions inherited from vtkDataObject | |
| vtkDataObject () | |
| ~vtkDataObject () | |
| Protected Member Functions inherited from vtkObject | |
| vtkObject () | |
| virtual | ~vtkObject () |
| virtual void | RegisterInternal (vtkObjectBase *, int check) |
| virtual void | UnRegisterInternal (vtkObjectBase *, int check) |
| void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=NULL) |
| void | InternalReleaseFocus () |
| Protected Member Functions inherited from vtkObjectBase | |
| vtkObjectBase () | |
| virtual | ~vtkObjectBase () |
| virtual void | CollectRevisions (ostream &) |
| vtkObjectBase (const vtkObjectBase &) | |
| void | operator= (const vtkObjectBase &) |
Static Protected Attributes | |
| static vtkPolyDataDummyContainter | DummyContainer |
| enum | { ERR_NO_SUCH_FIELD = -4, ERR_INCORRECT_FIELD = -3, ERR_NON_MANIFOLD_STAR = -2, REGULAR_POINT = -1, MINIMUM = 0, SADDLE = 1, MAXIMUM = 2 } |
| int | GetScalarFieldCriticalIndex (vtkIdType pointId, vtkDataArray *scalarField) |
| int | GetScalarFieldCriticalIndex (vtkIdType pointId, int fieldId) |
| int | GetScalarFieldCriticalIndex (vtkIdType pointId, const char *fieldName) |
Detailed Description
concrete dataset represents vertices, lines, polygons, and triangle strips
vtkPolyData is a data object that is a concrete implementation of vtkDataSet. vtkPolyData represents a geometric structure consisting of vertices, lines, polygons, and/or triangle strips. Point and cell attribute values (e.g., scalars, vectors, etc.) also are represented.
The actual cell types (vtkCellType.h) supported by vtkPolyData are: vtkVertex, vtkPolyVertex, vtkLine, vtkPolyLine, vtkTriangle, vtkQuad, vtkPolygon, and vtkTriangleStrip.
One important feature of vtkPolyData objects is that special traversal and data manipulation methods are available to process data. These methods are generally more efficient than vtkDataSet methods and should be used whenever possible. For example, traversing the cells in a dataset we would use GetCell(). To traverse cells with vtkPolyData we would retrieve the cell array object representing polygons (for example using GetPolys()) and then use vtkCellArray's InitTraversal() and GetNextCell() methods.
- Warning
- Because vtkPolyData is implemented with four separate instances of vtkCellArray to represent 0D vertices, 1D lines, 2D polygons, and 2D triangle strips, it is possible to create vtkPolyData instances that consist of a mixture of cell types. Because of the design of the class, there are certain limitations on how mixed cell types are inserted into the vtkPolyData, and in turn the order in which they are processed and rendered. To preserve the consistency of cell ids, and to insure that cells with cell data are rendered properly, users must insert mixed cells in the order of vertices (vtkVertex and vtkPolyVertex), lines (vtkLine and vtkPolyLine), polygons (vtkTriangle, vtkQuad, vtkPolygon), and triangle strips (vtkTriangleStrip).
- Some filters when processing vtkPolyData with mixed cell types may process the cells in differing ways. Some will convert one type into another (e.g., vtkTriangleStrip into vtkTriangles) or expect a certain type (vtkDecimatePro expects triangles or triangle strips; vtkTubeFilter expects lines). Read the documentation for each filter carefully to understand how each part of vtkPolyData is processed.
- Examples:
- vtkPolyData (Examples)
- Tests:
- vtkPolyData (Tests)
Definition at line 83 of file vtkPolyData.h.
Member Typedef Documentation
| typedef vtkPointSet vtkPolyData::Superclass |
Definition at line 88 of file vtkPolyData.h.
Member Enumeration Documentation
| anonymous enum |
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
- Given a pointId and an attribute representing a scalar field, this member returns the index of the critical point: vtkPolyData::MINIMUM (index 0): local minimum; vtkPolyData::SADDLE (index 1): local saddle; vtkPolyData::MAXIMUM (index 2): local maximum. Other returned values are: vtkPolyData::REGULAR_POINT: regular point (the gradient does not vanish); vtkPolyData::ERR_NON_MANIFOLD_STAR: the star of the considered vertex is not manifold (could not evaluate the index) vtkPolyData::ERR_INCORRECT_FIELD: the number of entries in the scalar field array is different form the number of vertices in the mesh. vtkPolyData::ERR_NO_SUCH_FIELD: the specified scalar field does not exist.
| Enumerator | |
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| ERR_NO_SUCH_FIELD | |
| ERR_INCORRECT_FIELD | |
| ERR_NON_MANIFOLD_STAR | |
| REGULAR_POINT | |
| MINIMUM | |
| SADDLE | |
| MAXIMUM | |
Definition at line 405 of file vtkPolyData.h.
Constructor & Destructor Documentation
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Member Function Documentation
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkPointSet.
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Reimplemented from vtkPointSet.
| vtkPolyData* vtkPolyData::NewInstance | ( | ) | const |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkPointSet.
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Return what type of dataset this is.
Reimplemented from vtkDataSet.
Definition at line 92 of file vtkPolyData.h.
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Copy the geometric and topological structure of an input poly data object.
Reimplemented from vtkPointSet.
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Standard vtkDataSet interface.
Implements vtkDataSet.
Standard vtkDataSet interface.
Implements vtkDataSet.
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Standard vtkDataSet interface.
Implements vtkDataSet.
Standard vtkDataSet interface.
Implements vtkDataSet.
Standard vtkDataSet interface.
Reimplemented from vtkDataSet.
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Standard vtkDataSet interface.
Reimplemented from vtkDataSet.
| void vtkPolyData::CopyCells | ( | vtkPolyData * | pd, |
| vtkIdList * | idList, | ||
| vtkPointLocator * | locator = NULL |
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Copy cells listed in idList from pd, including points, point data, and cell data. This method assumes that point and cell data have been allocated. If you pass in a point locator, then the points won't be duplicated in the output.
Copy a cells point ids into list provided. (Less efficient.)
Implements vtkDataSet.
Efficient method to obtain cells using a particular point. Make sure that routine BuildLinks() has been called.
Implements vtkDataSet.
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Compute the (X, Y, Z) bounds of the data.
Reimplemented from vtkPointSet.
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Recover extra allocated memory when creating data whose initial size is unknown. Examples include using the InsertNextCell() method, or when using the CellArray::EstimateSize() method to create vertices, lines, polygons, or triangle strips.
Reimplemented from vtkPointSet.
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Return the maximum cell size in this poly data.
Implements vtkDataSet.
| void vtkPolyData::SetVerts | ( | vtkCellArray * | v | ) |
Set the cell array defining vertices.
| vtkCellArray* vtkPolyData::GetVerts | ( | ) |
Get the cell array defining vertices. If there are no vertices, an empty array will be returned (convenience to simplify traversal).
| void vtkPolyData::SetLines | ( | vtkCellArray * | l | ) |
Set the cell array defining lines.
| vtkCellArray* vtkPolyData::GetLines | ( | ) |
Get the cell array defining lines. If there are no lines, an empty array will be returned (convenience to simplify traversal).
| void vtkPolyData::SetPolys | ( | vtkCellArray * | p | ) |
Set the cell array defining polygons.
| vtkCellArray* vtkPolyData::GetPolys | ( | ) |
Get the cell array defining polygons. If there are no polygons, an empty array will be returned (convenience to simplify traversal).
| void vtkPolyData::SetStrips | ( | vtkCellArray * | s | ) |
Set the cell array defining triangle strips.
| vtkCellArray* vtkPolyData::GetStrips | ( | ) |
Get the cell array defining triangle strips. If there are no triangle strips, an empty array will be returned (convenience to simplify traversal).
| vtkIdType vtkPolyData::GetNumberOfVerts | ( | ) |
Return the number of primitives of a particular type held..
| vtkIdType vtkPolyData::GetNumberOfLines | ( | ) |
Return the number of primitives of a particular type held..
| vtkIdType vtkPolyData::GetNumberOfPolys | ( | ) |
Return the number of primitives of a particular type held..
| vtkIdType vtkPolyData::GetNumberOfStrips | ( | ) |
Return the number of primitives of a particular type held..
Method allocates initial storage for vertex, line, polygon, and triangle strip arrays. Use this method before the method PolyData::InsertNextCell(). (Or, provide vertex, line, polygon, and triangle strip cell arrays.) The array capacity is doubled when the inserting a cell exceeds the current capacity. extSize is no longer used.
| void vtkPolyData::Allocate | ( | vtkPolyData * | inPolyData, |
| vtkIdType | numCells = 1000, |
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| int | extSize = 1000 |
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Similar to the method above, this method allocates initial storage for vertex, line, polygon, and triangle strip arrays. It does this more intelligently, examining the supplied inPolyData to determine whether to allocate the verts, lines, polys, and strips arrays. (These arrays are allocated only if there is data in the corresponding arrays in the inPolyData.) Caution: if the inPolyData has no verts, and after allocating with this method an PolyData::InsertNextCell() is invoked where a vertex is inserted, bad things will happen.
Insert a cell of type VTK_VERTEX, VTK_POLY_VERTEX, VTK_LINE, VTK_POLY_LINE, VTK_TRIANGLE, VTK_QUAD, VTK_POLYGON, or VTK_TRIANGLE_STRIP. Make sure that the PolyData::Allocate() function has been called first or that vertex, line, polygon, and triangle strip arrays have been supplied. Note: will also insert VTK_PIXEL, but converts it to VTK_QUAD.
Insert a cell of type VTK_VERTEX, VTK_POLY_VERTEX, VTK_LINE, VTK_POLY_LINE, VTK_TRIANGLE, VTK_QUAD, VTK_POLYGON, or VTK_TRIANGLE_STRIP. Make sure that the PolyData::Allocate() function has been called first or that vertex, line, polygon, and triangle strip arrays have been supplied. Note: will also insert VTK_PIXEL, but converts it to VTK_QUAD.
| void vtkPolyData::Reset | ( | ) |
Begin inserting data all over again. Memory is not freed but otherwise objects are returned to their initial state.
| void vtkPolyData::BuildCells | ( | ) |
Create data structure that allows random access of cells.
| void vtkPolyData::BuildLinks | ( | int | initialSize = 0 | ) |
Create upward links from points to cells that use each point. Enables topologically complex queries. Normally the links array is allocated based on the number of points in the vtkPolyData. The optional initialSize parameter can be used to allocate a larger size initially.
| void vtkPolyData::DeleteCells | ( | ) |
Release data structure that allows random access of the cells. This must be done before a 2nd call to BuildLinks(). DeleteCells implicitly deletes the links as well since they are no longer valid.
| void vtkPolyData::DeleteLinks | ( | ) |
Release the upward links from point to cells that use each point.
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Special (efficient) operations on poly data. Use carefully.
Definition at line 468 of file vtkPolyData.h.
| void vtkPolyData::GetCellEdgeNeighbors | ( | vtkIdType | cellId, |
| vtkIdType | p1, | ||
| vtkIdType | p2, | ||
| vtkIdList * | cellIds | ||
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Get the neighbors at an edge. More efficient than the general GetCellNeighbors(). Assumes links have been built (with BuildLinks()), and looks specifically for edge neighbors.
Return a pointer to a list of point ids defining cell. (More efficient.) Assumes that cells have been built (with BuildCells()).
Given three vertices, determine whether it's a triangle. Make sure BuildLinks() has been called first.
Definition at line 475 of file vtkPolyData.h.
Determine whether two points form an edge. If they do, return non-zero. By definition PolyVertex and PolyLine have no edges since 1-dimensional edges are only found on cells 2D and higher. Edges are defined as 1-D boundary entities to cells. Make sure BuildLinks() has been called first.
Determine whether a point is used by a particular cell. If it is, return non-zero. Make sure BuildCells() has been called first.
Definition at line 505 of file vtkPolyData.h.
Replace the points defining cell "cellId" with a new set of points. This operator is (typically) used when links from points to cells have not been built (i.e., BuildLinks() has not been executed). Use the operator ReplaceLinkedCell() to replace a cell when cell structure has been built.
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Replace a point in the cell connectivity list with a different point.
Definition at line 558 of file vtkPolyData.h.
| void vtkPolyData::ReverseCell | ( | vtkIdType | cellId | ) |
Reverse the order of point ids defining the cell.
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Mark a point/cell as deleted from this vtkPolyData.
Definition at line 521 of file vtkPolyData.h.
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Mark a point/cell as deleted from this vtkPolyData.
Definition at line 526 of file vtkPolyData.h.
| void vtkPolyData::RemoveDeletedCells | ( | ) |
The cells marked by calls to DeleteCell are stored in the Cell Array VTK_EMPTY_CELL, but they still exist in the cell arrays. Calling RemoveDeletedCells will traverse the cell arrays and remove/compact the cell arrays as well as any cell data thus truly removing the cells from the polydata object.
Add a point to the cell data structure (after cell pointers have been built). This method adds the point and then allocates memory for the links to the cells. (To use this method, make sure points are available and BuildLinks() has been invoked.) Of the two methods below, one inserts a point coordinate and the other just makes room for cell links.
Add a point to the cell data structure (after cell pointers have been built). This method adds the point and then allocates memory for the links to the cells. (To use this method, make sure points are available and BuildLinks() has been invoked.) Of the two methods below, one inserts a point coordinate and the other just makes room for cell links.
Add a new cell to the cell data structure (after cell pointers have been built). This method adds the cell and then updates the links from the points to the cells. (Memory is allocated as necessary.)
Replace one cell with another in cell structure. This operator updates the connectivity list and the point's link list. It does not delete references to the old cell in the point's link list. Use the operator RemoveCellReference() to delete all references from points to (old) cell. You may also want to consider using the operator ResizeCellList() if the link list is changing size.
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Remove all references to cell in cell structure. This means the links from the cell's points to the cell are deleted. Memory is not reclaimed. Use the method ResizeCellList() to resize the link list from a point to its using cells. (This operator assumes BuildLinks() has been called.)
Definition at line 531 of file vtkPolyData.h.
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Add references to cell in cell structure. This means the links from the cell's points to the cell are modified. Memory is not extended. Use the method ResizeCellList() to resize the link list from a point to its using cells. (This operator assumes BuildLinks() has been called.)
Definition at line 542 of file vtkPolyData.h.
Remove a reference to a cell in a particular point's link list. You may also consider using RemoveCellReference() to remove the references from all the cell's points to the cell. This operator does not reallocate memory; use the operator ResizeCellList() to do this if necessary.
Add a reference to a cell in a particular point's link list. (You may also consider using AddCellReference() to add the references from all the cell's points to the cell.) This operator does not realloc memory; use the operator ResizeCellList() to do this if necessary.
Resize the list of cells using a particular point. (This operator assumes that BuildLinks() has been called.)
Definition at line 553 of file vtkPolyData.h.
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Restore object to initial state. Release memory back to system.
Reimplemented from vtkPointSet.
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Get the piece and the number of pieces. Similar to extent in 3D.
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Get the piece and the number of pieces. Similar to extent in 3D.
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Get the ghost level.
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Return the actual size of the data in kibibytes (1024 bytes). This number is valid only after the pipeline has updated. The memory size returned is guaranteed to be greater than or equal to the memory required to represent the data (e.g., extra space in arrays, etc. are not included in the return value). THIS METHOD IS THREAD SAFE.
Reimplemented from vtkPointSet.
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Shallow and Deep copy.
Reimplemented from vtkPointSet.
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Shallow and Deep copy.
Reimplemented from vtkPointSet.
| void vtkPolyData::RemoveGhostCells | ( | ) |
This method will remove any cell that is marked as ghost (has the vtkDataSetAttributes::DUPLICATECELL bit set). It does not remove unused points.
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Retrieve an instance of this class from an information object.
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Retrieve an instance of this class from an information object.
| int vtkPolyData::GetScalarFieldCriticalIndex | ( | vtkIdType | pointId, |
| vtkDataArray * | scalarField | ||
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Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
- Given a pointId and an attribute representing a scalar field, this member returns the index of the critical point: vtkPolyData::MINIMUM (index 0): local minimum; vtkPolyData::SADDLE (index 1): local saddle; vtkPolyData::MAXIMUM (index 2): local maximum. Other returned values are: vtkPolyData::REGULAR_POINT: regular point (the gradient does not vanish); vtkPolyData::ERR_NON_MANIFOLD_STAR: the star of the considered vertex is not manifold (could not evaluate the index) vtkPolyData::ERR_INCORRECT_FIELD: the number of entries in the scalar field array is different form the number of vertices in the mesh. vtkPolyData::ERR_NO_SUCH_FIELD: the specified scalar field does not exist.
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
- Given a pointId and an attribute representing a scalar field, this member returns the index of the critical point: vtkPolyData::MINIMUM (index 0): local minimum; vtkPolyData::SADDLE (index 1): local saddle; vtkPolyData::MAXIMUM (index 2): local maximum. Other returned values are: vtkPolyData::REGULAR_POINT: regular point (the gradient does not vanish); vtkPolyData::ERR_NON_MANIFOLD_STAR: the star of the considered vertex is not manifold (could not evaluate the index) vtkPolyData::ERR_INCORRECT_FIELD: the number of entries in the scalar field array is different form the number of vertices in the mesh. vtkPolyData::ERR_NO_SUCH_FIELD: the specified scalar field does not exist.
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
- Given a pointId and an attribute representing a scalar field, this member returns the index of the critical point: vtkPolyData::MINIMUM (index 0): local minimum; vtkPolyData::SADDLE (index 1): local saddle; vtkPolyData::MAXIMUM (index 2): local maximum. Other returned values are: vtkPolyData::REGULAR_POINT: regular point (the gradient does not vanish); vtkPolyData::ERR_NON_MANIFOLD_STAR: the star of the considered vertex is not manifold (could not evaluate the index) vtkPolyData::ERR_INCORRECT_FIELD: the number of entries in the scalar field array is different form the number of vertices in the mesh. vtkPolyData::ERR_NO_SUCH_FIELD: the specified scalar field does not exist.
Member Data Documentation
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Definition at line 427 of file vtkPolyData.h.
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Definition at line 428 of file vtkPolyData.h.
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Definition at line 429 of file vtkPolyData.h.
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Definition at line 430 of file vtkPolyData.h.
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Definition at line 431 of file vtkPolyData.h.
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Definition at line 432 of file vtkPolyData.h.
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Definition at line 433 of file vtkPolyData.h.
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Definition at line 434 of file vtkPolyData.h.
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Definition at line 435 of file vtkPolyData.h.
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Definition at line 439 of file vtkPolyData.h.
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Definition at line 440 of file vtkPolyData.h.
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Definition at line 441 of file vtkPolyData.h.
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Definition at line 442 of file vtkPolyData.h.
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Definition at line 445 of file vtkPolyData.h.
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Definition at line 449 of file vtkPolyData.h.
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Definition at line 450 of file vtkPolyData.h.
The documentation for this class was generated from the following file:
- /home/boeckb/code/depot/group-kitware/vtk/build-release/Utilities/Doxygen/dox/Common/DataModel/vtkPolyData.h
