vtkPolyVertex Class Reference

cell represents a set of 0D vertices More...

`#include <vtkPolyVertex.h>`

Inheritance diagram for vtkPolyVertex:
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Collaboration diagram for vtkPolyVertex:
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## Public Types

typedef vtkCell | Superclass
Public Types inherited from vtkCell
typedef vtkObject | Superclass

## Public Member Functions

virtual vtkTypeBool | IsA (const char *type)
| Return 1 if this class is the same type of (or a subclass of) the named class. More...
vtkPolyVertex * | NewInstance () const
void | PrintSelf (ostream &os, vtkIndent indent) override
| Methods invoked by print to print information about the object including superclasses. More...
int | GetCellType () override
| See the vtkCell API for descriptions of these methods. More...
int | GetCellDimension () override
| Return the topological dimensional of the cell (0,1,2, or 3). More...
int | GetNumberOfEdges () override
| Return the number of edges in the cell. More...
int | GetNumberOfFaces () override
| Return the number of faces in the cell. More...
vtkCell * | GetEdge (int vtkNotUsed(edgeId)) override
vtkCell * | GetFace (int vtkNotUsed(faceId)) override
int | CellBoundary (int subId, const double pcoords[3], vtkIdList *pts) override
| Given parametric coordinates of a point, return the closest cell boundary, and whether the point is inside or outside of the cell. More...
void | Contour (double value, vtkDataArray *cellScalars, vtkIncrementalPointLocator *locator, vtkCellArray *verts, vtkCellArray *lines, vtkCellArray *polys, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd) override
| Generate contouring primitives. More...
void | Clip (double value, vtkDataArray *cellScalars, vtkIncrementalPointLocator *locator, vtkCellArray *verts, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd, int insideOut) override
| Cut (or clip) the cell based on the input cellScalars and the specified value. More...
int | EvaluatePosition (const double x[3], double closestPoint[3], int &subId, double pcoords[3], double &dist2, double weights[]) override

Given a point x[3] return inside(=1), outside(=0) cell, or (-1) computational problem encountered; evaluate parametric coordinates, sub-cell id (!=0 only if cell is composite), distance squared of point x[3] to cell (in particular, the sub-cell indicated), closest point on cell to x[3] (unless closestPoint is null, in which case, the closest point and dist2 are not found), and interpolation weights in cell. More...

void | EvaluateLocation (int &subId, const double pcoords[3], double x[3], double *weights) override
| Determine global coordinate (x[3]) from subId and parametric coordinates. More...
int | IntersectWithLine (const double p1[3], const double p2[3], double tol, double &t, double x[3], double pcoords[3], int &subId) override
| Intersect with a ray. More...
int | Triangulate (int index, vtkIdList *ptIds, vtkPoints *pts) override
| Generate simplices of proper dimension. More...
void | Derivatives (int subId, const double pcoords[3], const double *values, int dim, double *derivs) override
| Compute derivatives given cell subId and parametric coordinates. More...
int | IsPrimaryCell () override
| Return whether this cell type has a fixed topology or whether the topology varies depending on the data (e.g., vtkConvexPointSet). More...
int | GetParametricCenter (double pcoords[3]) override
| Return the center of the point cloud in parametric coordinates. More...
Public Member Functions inherited from vtkCell
vtkCell * | NewInstance () const
void | Initialize (int npts, const vtkIdType *pts, vtkPoints *p)
| Initialize cell from outside with point ids and point coordinates specified. More...
void | Initialize (int npts, vtkPoints *p)
| Initialize the cell with point coordinates specified. More...
virtual void | ShallowCopy (vtkCell *c)
| Copy this cell by reference counting the internal data structures. More...
virtual void | DeepCopy (vtkCell *c)
| Copy this cell by completely copying internal data structures. More...
virtual int | IsLinear ()
| Non-linear cells require special treatment beyond the usual cell type and connectivity list information. More...
virtual int | RequiresInitialization ()
| Some cells require initialization prior to access. More...
virtual void | Initialize ()
virtual int | IsExplicitCell ()
| Explicit cells require additional representational information beyond the usual cell type and connectivity list information. More...
virtual int | RequiresExplicitFaceRepresentation ()
| Determine whether the cell requires explicit face representation, and methods for setting and getting the faces (see vtkPolyhedron for example usage of these methods). More...
virtual void | SetFaces (vtkIdType *vtkNotUsed(faces))
virtual vtkIdType * | GetFaces ()
vtkPoints * | GetPoints ()
| Get the point coordinates for the cell. More...
vtkIdType | GetNumberOfPoints ()
| Return the number of points in the cell. More...
vtkIdList * | GetPointIds ()
| Return the list of point ids defining the cell. More...
vtkIdType | GetPointId (int ptId)
| For cell point i, return the actual point id. More...
virtual vtkCell * | GetEdge (int edgeId)=0
| Return the edge cell from the edgeId of the cell. More...
virtual vtkCell * | GetFace (int faceId)=0
| Return the face cell from the faceId of the cell. More...
void | GetBounds (double bounds[6])
| Compute cell bounding box (xmin,xmax,ymin,ymax,zmin,zmax). More...
double * | GetBounds ()
| Compute cell bounding box (xmin,xmax,ymin,ymax,zmin,zmax). More...
double | GetLength2 ()
| Compute Length squared of cell (i.e., bounding box diagonal squared). More...
virtual double | GetParametricDistance (const double pcoords[3])
| Return the distance of the parametric coordinate provided to the cell. More...
virtual double * | GetParametricCoords ())
| Return a contiguous array of parametric coordinates of the points defining this cell. More...
virtual void | InterpolateFunctions (const double vtkNotUsed(pcoords)[3], double *vtkNotUsed(weight))
| Compute the interpolation functions/derivatives (aka shape functions/derivatives) No-ops at this level. More...
virtual void | InterpolateDerivs (const double vtkNotUsed(pcoords)[3], double *vtkNotUsed(derivs))
Public Member Functions inherited from vtkObject
| vtkBaseTypeMacro (vtkObject, vtkObjectBase)
virtual void | DebugOn ()
| Turn debugging output on. More...
virtual void | DebugOff ()
| Turn debugging output off. More...
bool | GetDebug ()
| Get the value of the debug flag. More...
void | SetDebug (bool debugFlag)
| Set the value of the debug flag. More...
virtual void | Modified ()
| Update the modification time for this object. More...
virtual vtkMTimeType | GetMTime ()
| Return this object's modified time. More...
unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
| Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f)
vtkCommand * | GetCommand (unsigned long tag)
void | RemoveObserver (vtkCommand *)
void | RemoveObservers (unsigned long event, vtkCommand *)
void | RemoveObservers (const char *event, vtkCommand *)
vtkTypeBool | HasObserver (unsigned long event, vtkCommand *)
vtkTypeBool | HasObserver (const char *event, vtkCommand *)
void | RemoveObserver (unsigned long tag)
void | RemoveObservers (unsigned long event)
void | RemoveObservers (const char *event)
void | RemoveAllObservers ()
vtkTypeBool | HasObserver (unsigned long event)
vtkTypeBool | HasObserver (const char *event)
template<class U , class T >
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
| Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...
template<class U , class T >
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
template<class U , class T >
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f)
| Allow user to set the AbortFlagOn() with the return value of the callback method. More...
int | InvokeEvent (unsigned long event, void *callData)
| This method invokes an event and return whether the event was aborted or not. More...
int | InvokeEvent (const char *event, void *callData)
int | InvokeEvent (unsigned long event)
int | InvokeEvent (const char *event)
Public Member Functions inherited from vtkObjectBase
const char * | GetClassName () const
| Return the class name as a string. More...
virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name)
| Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...
virtual void | Delete ()
| Delete a VTK object. More...
virtual void | FastDelete ()
| Delete a reference to this object. More...
void | InitializeObjectBase ()
void | Print (ostream &os)
| Print an object to an ostream. More...
virtual void | PrintHeader (ostream &os, vtkIndent indent)
virtual void | PrintTrailer (ostream &os, vtkIndent indent)
virtual void | Register (vtkObjectBase *o)
| Increase the reference count (mark as used by another object). More...
virtual void | UnRegister (vtkObjectBase *o)
| Decrease the reference count (release by another object). More...
int | GetReferenceCount ()
| Return the current reference count of this object. More...
void | SetReferenceCount (int)
| Sets the reference count. More...
void | PrintRevisions (ostream &)
| Legacy. More...

## Static Public Member Functions

static vtkPolyVertex * | New ()
static vtkTypeBool | IsTypeOf (const char *type)
static vtkPolyVertex * | SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkCell
static vtkTypeBool | IsTypeOf (const char *type)
static vtkCell * | SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkObject
static vtkObject * | New ()
| Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
static void | BreakOnError ()
| This method is called when vtkErrorMacro executes. More...
static void | SetGlobalWarningDisplay (int val)
| This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static void | GlobalWarningDisplayOn ()
static void | GlobalWarningDisplayOff ()
static int | GetGlobalWarningDisplay ()
Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool | IsTypeOf (const char *name)
| Return 1 if this class type is the same type of (or a subclass of) the named class. More...
static vtkIdType | GetNumberOfGenerationsFromBaseType (const char *name)
| Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...
static vtkObjectBase * | New ()
| Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

## Protected Member Functions

virtual vtkObjectBase * | NewInstanceInternal () const
| vtkPolyVertex ()
| ~vtkPolyVertex () override
Protected Member Functions inherited from vtkCell
| vtkCell ()
| ~vtkCell () override
Protected Member Functions inherited from vtkObject
| vtkObject ()
| ~vtkObject () override
void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override
void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr)
| These methods allow a command to exclusively grab all events. More...
void | InternalReleaseFocus ()
Protected Member Functions inherited from vtkObjectBase
| vtkObjectBase ()
virtual | ~vtkObjectBase ()
virtual void | CollectRevisions (ostream &)
virtual void | ReportReferences (vtkGarbageCollector *)
| vtkObjectBase (const vtkObjectBase &)
void | operator= (const vtkObjectBase &)

## Protected Attributes

vtkVertex * | Vertex
Protected Attributes inherited from vtkCell
double | Bounds [6]
Protected Attributes inherited from vtkObject
bool | Debug
vtkTimeStamp | MTime
vtkSubjectHelper * | SubjectHelper
Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t > | ReferenceCount
vtkWeakPointerBase ** | WeakPointers

## Additional Inherited Members

Public Attributes inherited from vtkCell
vtkPoints * | Points
vtkIdList * | PointIds

## Detailed Description

cell represents a set of 0D vertices

vtkPolyVertex is a concrete implementation of vtkCell to represent a set of 3D vertices.

Definition at line 32 of file vtkPolyVertex.h.

## Member Typedef Documentation

## Superclass

typedef vtkCell vtkPolyVertex::Superclass

Definition at line 36 of file vtkPolyVertex.h.

## Constructor & Destructor Documentation

## vtkPolyVertex()

vtkPolyVertex::vtkPolyVertex | ( |  | ) |

protected

## ~vtkPolyVertex()

vtkPolyVertex::~vtkPolyVertex | ( |  | ) |

override protected

## Member Function Documentation

## New()

static vtkPolyVertex* vtkPolyVertex::New | ( |  | ) |

static

## IsTypeOf()

static vtkTypeBool vtkPolyVertex::IsTypeOf | ( | const char * | type | ) |

static

## IsA()

virtual vtkTypeBool vtkPolyVertex::IsA | ( | const char * | name | ) |

virtual

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 vtkCell.

## SafeDownCast()

static vtkPolyVertex* vtkPolyVertex::SafeDownCast | ( | vtkObjectBase * | o | ) |

static

## NewInstanceInternal()

virtual vtkObjectBase* vtkPolyVertex::NewInstanceInternal | ( |  | ) | const

protected virtual

Reimplemented from vtkCell.

## NewInstance()

vtkPolyVertex* vtkPolyVertex::NewInstance | ( |  | ) | const

## PrintSelf()

void vtkPolyVertex::PrintSelf | ( | ostream & | os,
|  | vtkIndent | indent
| ) |  |

override virtual

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 vtkCell.

## GetCellType()

int vtkPolyVertex::GetCellType | ( |  | ) |

inline override virtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 43 of file vtkPolyVertex.h.

## GetCellDimension()

int vtkPolyVertex::GetCellDimension | ( |  | ) |

inline override virtual

Return the topological dimensional of the cell (0,1,2, or 3).

Implements vtkCell.

Definition at line 44 of file vtkPolyVertex.h.

## GetNumberOfEdges()

int vtkPolyVertex::GetNumberOfEdges | ( |  | ) |

inline override virtual

Return the number of edges in the cell.

Implements vtkCell.

Definition at line 45 of file vtkPolyVertex.h.

## GetNumberOfFaces()

int vtkPolyVertex::GetNumberOfFaces | ( |  | ) |

inline override virtual

Return the number of faces in the cell.

Implements vtkCell.

Definition at line 46 of file vtkPolyVertex.h.

## GetEdge()

vtkCell* vtkPolyVertex::GetEdge | ( | int | vtkNotUsededgeId | ) |

inline override

Definition at line 47 of file vtkPolyVertex.h.

## GetFace()

vtkCell* vtkPolyVertex::GetFace | ( | int | vtkNotUsedfaceId | ) |

inline override

Definition at line 48 of file vtkPolyVertex.h.

## CellBoundary()

int vtkPolyVertex::CellBoundary | ( | int | subId,
|  | const double | pcoords[3],
|  | vtkIdList * | pts
| ) |  |

override virtual

Given parametric coordinates of a point, return the closest cell boundary, and whether the point is inside or outside of the cell.

The cell boundary is defined by a list of points (pts) that specify a face (3D cell), edge (2D cell), or vertex (1D cell). If the return value of the method is != 0, then the point is inside the cell.

Implements vtkCell.

## Contour()

void vtkPolyVertex::Contour | ( | double | value,
|  | vtkDataArray * | cellScalars,
|  | vtkIncrementalPointLocator * | locator,
|  | vtkCellArray * | verts,
|  | vtkCellArray * | lines,
|  | vtkCellArray * | polys,
|  | vtkPointData * | inPd,
|  | vtkPointData * | outPd,
|  | vtkCellData * | inCd,
|  | vtkIdType | cellId,
|  | vtkCellData * | outCd
| ) |  |

override virtual

Generate contouring primitives.

The scalar list cellScalars are scalar values at each cell point. The point locator is essentially a points list that merges points as they are inserted (i.e., prevents duplicates). Contouring primitives can be vertices, lines, or polygons. It is possible to interpolate point data along the edge by providing input and output point data - if outPd is nullptr, then no interpolation is performed. Also, if the output cell data is non-nullptr, the cell data from the contoured cell is passed to the generated contouring primitives. (Note: the CopyAllocate() method must be invoked on both the output cell and point data. The cellId refers to the cell from which the cell data is copied.)

Implements vtkCell.

## Clip()

void vtkPolyVertex::Clip | ( | double | value,
|  | vtkDataArray * | cellScalars,
|  | vtkIncrementalPointLocator * | locator,
|  | vtkCellArray * | connectivity,
|  | vtkPointData * | inPd,
|  | vtkPointData * | outPd,
|  | vtkCellData * | inCd,
|  | vtkIdType | cellId,
|  | vtkCellData * | outCd,
|  | int | insideOut
| ) |  |

override virtual

Cut (or clip) the cell based on the input cellScalars and the specified value.

The output of the clip operation will be one or more cells of the same topological dimension as the original cell. The flag insideOut controls what part of the cell is considered inside - normally cell points whose scalar value is greater than "value" are considered inside. If insideOut is on, this is reversed. Also, if the output cell data is non-nullptr, the cell data from the clipped cell is passed to the generated contouring primitives. (Note: the CopyAllocate() method must be invoked on both the output cell and point data. The cellId refers to the cell from which the cell data is copied.)

Implements vtkCell.

## EvaluatePosition()

int vtkPolyVertex::EvaluatePosition | ( | const double | x[3],
|  | double | closestPoint[3],
|  | int & | subId,
|  | double | pcoords[3],
|  | double & | dist2,
|  | double | weights[]
| ) |  |

override virtual

Given a point x[3] return inside(=1), outside(=0) cell, or (-1) computational problem encountered; evaluate parametric coordinates, sub-cell id (!=0 only if cell is composite), distance squared of point x[3] to cell (in particular, the sub-cell indicated), closest point on cell to x[3] (unless closestPoint is null, in which case, the closest point and dist2 are not found), and interpolation weights in cell.

(The number of weights is equal to the number of points defining the cell). Note: on rare occasions a -1 is returned from the method. This means that numerical error has occurred and all data returned from this method should be ignored. Also, inside/outside is determine parametrically. That is, a point is inside if it satisfies parametric limits. This can cause problems for cells of topological dimension 2 or less, since a point in 3D can project onto the cell within parametric limits but be "far" from the cell. Thus the value dist2 may be checked to determine true in/out.

Implements vtkCell.

## EvaluateLocation()

void vtkPolyVertex::EvaluateLocation | ( | int & | subId,
|  | const double | pcoords[3],
|  | double | x[3],
|  | double * | weights
| ) |  |

override virtual

Determine global coordinate (x[3]) from subId and parametric coordinates.

Also returns interpolation weights. (The number of weights is equal to the number of points in the cell.)

Implements vtkCell.

## IntersectWithLine()

int vtkPolyVertex::IntersectWithLine | ( | const double | p1[3],
|  | const double | p2[3],
|  | double | tol,
|  | double & | t,
|  | double | x[3],
|  | double | pcoords[3],
|  | int & | subId
| ) |  |

override virtual

Intersect with a ray.

Return parametric coordinates (both line and cell) and global intersection coordinates, given ray definition p1[3], p2[3] and tolerance tol. The method returns non-zero value if intersection occurs. A parametric distance t between 0 and 1 along the ray representing the intersection point, the point coordinates x[3] in data coordinates and also pcoords[3] in parametric coordinates. subId is the index within the cell if a composed cell like a triangle strip.

Implements vtkCell.

## Triangulate()

int vtkPolyVertex::Triangulate | ( | int | index,
|  | vtkIdList * | ptIds,
|  | vtkPoints * | pts
| ) |  |

override virtual

Generate simplices of proper dimension.

If cell is 3D, tetrahedron are generated; if 2D triangles; if 1D lines; if 0D points. The form of the output is a sequence of points, each n+1 points (where n is topological cell dimension) defining a simplex. The index is a parameter that controls which triangulation to use (if more than one is possible). If numerical degeneracy encountered, 0 is returned, otherwise 1 is returned. This method does not insert new points: all the points that define the simplices are the points that define the cell.

Implements vtkCell.

## Derivatives()

void vtkPolyVertex::Derivatives | ( | int | subId,
|  | const double | pcoords[3],
|  | const double * | values,
|  | int | dim,
|  | double * | derivs
| ) |  |

override virtual

Compute derivatives given cell subId and parametric coordinates.

The values array is a series of data value(s) at the cell points. There is a one-to-one correspondence between cell point and data value(s). Dim is the number of data values per cell point. Derivs are derivatives in the x-y-z coordinate directions for each data value. Thus, if computing derivatives for a scalar function in a hexahedron, dim=1, 8 values are supplied, and 3 deriv values are returned (i.e., derivatives in x-y-z directions). On the other hand, if computing derivatives of velocity (vx,vy,vz) dim=3, 24 values are supplied ((vx,vy,vz)1, (vx,vy,vz)2, ....()8), and 9 deriv values are returned ((d(vx)/dx),(d(vx)/dy),(d(vx)/dz), (d(vy)/dx),(d(vy)/dy), (d(vy)/dz), (d(vz)/dx),(d(vz)/dy),(d(vz)/dz)).

Implements vtkCell.

## IsPrimaryCell()

int vtkPolyVertex::IsPrimaryCell | ( |  | ) |

inline override virtual

Return whether this cell type has a fixed topology or whether the topology varies depending on the data (e.g., vtkConvexPointSet).

This compares to composite cells that are typically composed of primary cells (e.g., a triangle strip composite cell is made up of triangle primary cells).

Reimplemented from vtkCell.

Definition at line 64 of file vtkPolyVertex.h.

## GetParametricCenter()

int vtkPolyVertex::GetParametricCenter | ( | double | pcoords[3] | ) |

override virtual

Return the center of the point cloud in parametric coordinates.

Reimplemented from vtkCell.

## Member Data Documentation

## Vertex

vtkVertex* vtkPolyVertex::Vertex

protected

Definition at line 76 of file vtkPolyVertex.h.

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

- Common/DataModel/vtkPolyVertex.h