VTK
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concrete dataset represents vertices, lines, polygons, and triangle strips More...
#include <vtkPolyData.h>
Inherits vtkPointSet.
Public Types | |
typedef vtkPointSet | Superclass |
Public Member Functions | |
virtual int | IsA (const char *type) |
vtkPolyData * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) |
int | GetDataObjectType () |
void | CopyStructure (vtkDataSet *ds) |
void | GetCellPoints (vtkIdType cellId, vtkIdList *ptIds) |
void | GetPointCells (vtkIdType ptId, vtkIdList *cellIds) |
void | ComputeBounds () |
void | Squeeze () |
int | GetMaxCellSize () |
void | SetVerts (vtkCellArray *v) |
vtkCellArray * | GetVerts () |
void | SetLines (vtkCellArray *l) |
vtkCellArray * | GetLines () |
void | SetPolys (vtkCellArray *p) |
vtkCellArray * | GetPolys () |
void | SetStrips (vtkCellArray *s) |
vtkCellArray * | GetStrips () |
void | Allocate (vtkIdType numCells=1000, int extSize=1000) |
int | InsertNextCell (int type, int npts, vtkIdType *pts) |
int | InsertNextCell (int type, vtkIdList *pts) |
void | Reset () |
void | BuildCells () |
void | BuildLinks (int initialSize=0) |
void | DeleteCells () |
void | DeleteLinks () |
void | GetCellPoints (vtkIdType cellId, vtkIdType &npts, vtkIdType *&pts) |
int | IsTriangle (int v1, int v2, int v3) |
int | IsEdge (vtkIdType p1, vtkIdType p2) |
int | IsPointUsedByCell (vtkIdType ptId, vtkIdType cellId) |
void | ReplaceCell (vtkIdType cellId, int npts, vtkIdType *pts) |
void | ReverseCell (vtkIdType cellId) |
void | RemoveDeletedCells () |
int | InsertNextLinkedCell (int type, int npts, vtkIdType *pts) |
void | ReplaceLinkedCell (vtkIdType cellId, int npts, vtkIdType *pts) |
void | RemoveCellReference (vtkIdType cellId) |
void | AddCellReference (vtkIdType cellId) |
void | RemoveReferenceToCell (vtkIdType ptId, vtkIdType cellId) |
void | AddReferenceToCell (vtkIdType ptId, vtkIdType cellId) |
void | ResizeCellList (vtkIdType ptId, int size) |
virtual void | Initialize () |
virtual int | GetGhostLevel () |
unsigned long | GetActualMemorySize () |
void | RemoveGhostCells (int level) |
vtkIdType | GetNumberOfCells () |
vtkCell * | GetCell (vtkIdType cellId) |
void | GetCell (vtkIdType cellId, vtkGenericCell *cell) |
int | GetCellType (vtkIdType cellId) |
void | GetCellBounds (vtkIdType cellId, double bounds[6]) |
void | GetCellNeighbors (vtkIdType cellId, vtkIdList *ptIds, vtkIdList *cellIds) |
void | CopyCells (vtkPolyData *pd, vtkIdList *idList, vtkPointLocator *locator=NULL) |
vtkIdType | GetNumberOfVerts () |
vtkIdType | GetNumberOfLines () |
vtkIdType | GetNumberOfPolys () |
vtkIdType | GetNumberOfStrips () |
void | Allocate (vtkPolyData *inPolyData, vtkIdType numCells=1000, int extSize=1000) |
void | GetPointCells (vtkIdType ptId, unsigned short &ncells, vtkIdType *&cells) |
void | GetCellEdgeNeighbors (vtkIdType cellId, vtkIdType p1, vtkIdType p2, vtkIdList *cellIds) |
void | ReplaceCellPoint (vtkIdType cellId, vtkIdType oldPtId, vtkIdType newPtId) |
void | DeletePoint (vtkIdType ptId) |
void | DeleteCell (vtkIdType cellId) |
int | InsertNextLinkedPoint (int numLinks) |
int | InsertNextLinkedPoint (double x[3], int numLinks) |
virtual int | GetPiece () |
virtual int | GetNumberOfPieces () |
void | ShallowCopy (vtkDataObject *src) |
void | DeepCopy (vtkDataObject *src) |
Static Public Member Functions | |
static vtkPolyData * | New () |
static int | IsTypeOf (const char *type) |
static vtkPolyData * | SafeDownCast (vtkObjectBase *o) |
static vtkPolyData * | GetData (vtkInformation *info) |
static vtkPolyData * | GetData (vtkInformationVector *v, int i=0) |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkPolyData () | |
~vtkPolyData () | |
Protected Attributes | |
vtkVertex * | Vertex |
vtkPolyVertex * | PolyVertex |
vtkLine * | Line |
vtkPolyLine * | PolyLine |
vtkTriangle * | Triangle |
vtkQuad * | Quad |
vtkPolygon * | Polygon |
vtkTriangleStrip * | TriangleStrip |
vtkEmptyCell * | EmptyCell |
vtkCellArray * | Verts |
vtkCellArray * | Lines |
vtkCellArray * | Polys |
vtkCellArray * | Strips |
vtkCellTypes * | Cells |
vtkCellLinks * | Links |
Static Protected Attributes | |
static vtkCellArray * | Dummy |
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) |
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.
Definition at line 82 of file vtkPolyData.h.
typedef vtkPointSet vtkPolyData::Superclass |
Definition at line 87 of file vtkPolyData.h.
anonymous enum |
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
Enumerator | |
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ERR_NO_SUCH_FIELD | |
ERR_INCORRECT_FIELD | |
ERR_NON_MANIFOLD_STAR | |
REGULAR_POINT | |
MINIMUM | |
SADDLE | |
MAXIMUM |
Definition at line 403 of file vtkPolyData.h.
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vtkPolyData* vtkPolyData::NewInstance | ( | ) | const |
void vtkPolyData::PrintSelf | ( | ostream & | os, |
vtkIndent | indent | ||
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Return what type of dataset this is.
Definition at line 91 of file vtkPolyData.h.
void vtkPolyData::CopyStructure | ( | vtkDataSet * | ds | ) |
Copy the geometric and topological structure of an input poly data object.
vtkIdType vtkPolyData::GetNumberOfCells | ( | ) |
Standard vtkDataSet interface.
vtkCell* vtkPolyData::GetCell | ( | vtkIdType | cellId | ) |
Standard vtkDataSet interface.
void vtkPolyData::GetCell | ( | vtkIdType | cellId, |
vtkGenericCell * | cell | ||
) |
Standard vtkDataSet interface.
int vtkPolyData::GetCellType | ( | vtkIdType | cellId | ) |
Standard vtkDataSet interface.
void vtkPolyData::GetCellBounds | ( | vtkIdType | cellId, |
double | bounds[6] | ||
) |
Standard vtkDataSet interface.
void vtkPolyData::GetCellNeighbors | ( | vtkIdType | cellId, |
vtkIdList * | ptIds, | ||
vtkIdList * | cellIds | ||
) |
Standard vtkDataSet interface.
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.
void vtkPolyData::GetCellPoints | ( | vtkIdType | cellId, |
vtkIdList * | ptIds | ||
) |
Copy a cells point ids into list provided. (Less efficient.)
void vtkPolyData::GetPointCells | ( | vtkIdType | ptId, |
vtkIdList * | cellIds | ||
) |
Efficient method to obtain cells using a particular point. Make sure that routine BuildLinks() has been called.
void vtkPolyData::ComputeBounds | ( | ) |
Compute the (X, Y, Z) bounds of the data.
void vtkPolyData::Squeeze | ( | ) |
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.
int vtkPolyData::GetMaxCellSize | ( | ) |
Return the maximum cell size in this poly data.
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..
void vtkPolyData::Allocate | ( | vtkIdType | numCells = 1000 , |
int | extSize = 1000 |
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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.
int vtkPolyData::InsertNextCell | ( | int | type, |
int | npts, | ||
vtkIdType * | pts | ||
) |
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.
int vtkPolyData::InsertNextCell | ( | int | type, |
vtkIdList * | pts | ||
) |
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 466 of file vtkPolyData.h.
void vtkPolyData::GetCellEdgeNeighbors | ( | vtkIdType | cellId, |
vtkIdType | p1, | ||
vtkIdType | p2, | ||
vtkIdList * | cellIds | ||
) |
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.
void vtkPolyData::GetCellPoints | ( | vtkIdType | cellId, |
vtkIdType & | npts, | ||
vtkIdType *& | pts | ||
) |
Return a pointer to a list of point ids defining cell. (More efficient.) Assumes that cells have been built (with BuildCells()).
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Given three vertices, determine whether it's a triangle. Make sure BuildLinks() has been called first.
Definition at line 473 of file vtkPolyData.h.
int vtkPolyData::IsEdge | ( | vtkIdType | p1, |
vtkIdType | p2 | ||
) |
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.
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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 503 of file vtkPolyData.h.
void vtkPolyData::ReplaceCell | ( | vtkIdType | cellId, |
int | npts, | ||
vtkIdType * | pts | ||
) |
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 556 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 519 of file vtkPolyData.h.
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Mark a point/cell as deleted from this vtkPolyData.
Definition at line 524 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.
int vtkPolyData::InsertNextLinkedPoint | ( | int | numLinks | ) |
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.
int vtkPolyData::InsertNextLinkedPoint | ( | double | x[3], |
int | numLinks | ||
) |
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.
int vtkPolyData::InsertNextLinkedCell | ( | int | type, |
int | npts, | ||
vtkIdType * | pts | ||
) |
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.)
void vtkPolyData::ReplaceLinkedCell | ( | vtkIdType | cellId, |
int | npts, | ||
vtkIdType * | pts | ||
) |
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 529 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 540 of file vtkPolyData.h.
void vtkPolyData::RemoveReferenceToCell | ( | vtkIdType | ptId, |
vtkIdType | cellId | ||
) |
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.
void vtkPolyData::AddReferenceToCell | ( | vtkIdType | ptId, |
vtkIdType | cellId | ||
) |
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.
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Resize the list of cells using a particular point. (This operator assumes that BuildLinks() has been called.)
Definition at line 551 of file vtkPolyData.h.
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Restore object to initial state. Release memory back to system.
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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.
unsigned long vtkPolyData::GetActualMemorySize | ( | ) |
Return the actual size of the data in kilobytes. 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.
void vtkPolyData::ShallowCopy | ( | vtkDataObject * | src | ) |
Shallow and Deep copy.
void vtkPolyData::DeepCopy | ( | vtkDataObject * | src | ) |
Shallow and Deep copy.
void vtkPolyData::RemoveGhostCells | ( | int | level | ) |
This method will remove any cell that has a ghost level array value greater or equal to level. It does not remove unused points (yet).
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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 | ||
) |
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
int vtkPolyData::GetScalarFieldCriticalIndex | ( | vtkIdType | pointId, |
int | fieldId | ||
) |
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
int vtkPolyData::GetScalarFieldCriticalIndex | ( | vtkIdType | pointId, |
const char * | fieldName | ||
) |
Scalar field critical point classification (for manifold 2D meshes). Reference: J. Milnor "Morse Theory", Princeton University Press,
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Definition at line 425 of file vtkPolyData.h.
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Definition at line 426 of file vtkPolyData.h.
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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 437 of file vtkPolyData.h.
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Definition at line 438 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 443 of file vtkPolyData.h.
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Definition at line 447 of file vtkPolyData.h.
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Definition at line 448 of file vtkPolyData.h.