vtkTriangleStrip Class Reference

a cell that represents a triangle strip More...

#include <vtkTriangleStrip.h>

Inheritance diagram for vtkTriangleStrip:

Collaboration diagram for vtkTriangleStrip:

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...
vtkTriangleStrip *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. 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...
int	GetCellType () override
	See the vtkCell API for descriptions of these methods. More...
int	GetCellDimension () override
	See the vtkCell API for descriptions of these methods. More...
int	GetNumberOfEdges () override
	See the vtkCell API for descriptions of these methods. More...
int	GetNumberOfFaces () override
	See the vtkCell API for descriptions of these methods. More...
vtkCell *	GetEdge (int edgeId) override
	See the vtkCell API for descriptions of these methods. More...
vtkCell *	GetFace (int vtkNotUsed(faceId)) override
	See the vtkCell API for descriptions of these methods. More...
int	CellBoundary (int subId, const double pcoords[3], vtkIdList *pts) override
	See the vtkCell API for descriptions of these methods. 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
	See the vtkCell API for descriptions of these methods. More...
void	Clip (double value, vtkDataArray *cellScalars, vtkIncrementalPointLocator *locator, vtkCellArray *polys, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd, int insideOut) override
	See the vtkCell API for descriptions of these methods. More...
Public Member Functions inherited from vtkCell
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...
vtkCell *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...
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	GetCellType ()=0
	Return the type of cell. More...
virtual int	GetCellDimension ()=0
	Return the topological dimensional of the cell (0,1,2, or 3). 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 () const
	Return the number of points in the cell. More...
virtual int	GetNumberOfEdges ()=0
	Return the number of edges in the cell. More...
virtual int	GetNumberOfFaces ()=0
	Return the number of faces 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...
virtual int	CellBoundary (int subId, const double pcoords[3], vtkIdList *pts)=0
	Given parametric coordinates of a point, return the closest cell boundary, and whether the point is inside or outside of the cell. More...
virtual int	EvaluatePosition (const double x[3], double closestPoint[3], int &subId, double pcoords[3], double &dist2, double weights[])=0
	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...
virtual void	EvaluateLocation (int &subId, const double pcoords[3], double x[3], double *weights)=0
	Determine global coordinate (x[3]) from subId and parametric coordinates. More...
virtual void	Contour (double value, vtkDataArray *cellScalars, vtkIncrementalPointLocator *locator, vtkCellArray *verts, vtkCellArray *lines, vtkCellArray *polys, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd)=0
	Generate contouring primitives. More...
virtual void	Clip (double value, vtkDataArray *cellScalars, vtkIncrementalPointLocator *locator, vtkCellArray *connectivity, vtkPointData *inPd, vtkPointData *outPd, vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd, int insideOut)=0
	Cut (or clip) the cell based on the input cellScalars and the specified value. More...
virtual int	Inflate (double dist)
	Inflates the cell. More...
virtual double	ComputeBoundingSphere (double center[3]) const
	Computes the bounding sphere of the cell. More...
virtual int	IntersectWithLine (const double p1[3], const double p2[3], double tol, double &t, double x[3], double pcoords[3], int &subId)=0
	Intersect with a ray. More...
virtual int	Triangulate (int index, vtkIdList *ptIds, vtkPoints *pts)=0
	Generate simplices of proper dimension. More...
virtual void	Derivatives (int subId, const double pcoords[3], const double *values, int dim, double *derivs)=0
	Compute derivatives given cell subId and parametric coordinates. 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 int	GetParametricCenter (double pcoords[3])
	Return center of the cell in parametric coordinates. More...
virtual double	GetParametricDistance (const double pcoords[3])
	Return the distance of the parametric coordinate provided to the cell. More...
virtual int	IsPrimaryCell ()
	Return whether this cell type has a fixed topology or whether the topology varies depending on the data (e.g., vtkConvexPointSet). 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))
virtual int	IntersectWithCell (vtkCell *other, double tol=0.0)
	Intersects with an other cell. More...
virtual int	IntersectWithCell (vtkCell *other, const vtkBoundingBox &boudingBox, const vtkBoundingBox &otherBoundingBox, double tol=0.0)
	Intersects with an other cell. More...
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...
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...
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)
int	InvokeEvent (unsigned long event)
int	InvokeEvent (const char *event)
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)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
void	RemoveObservers (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
vtkTypeBool	HasObserver (const char *event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
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)
	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, 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)
	This method invokes an event and return whether the event was aborted or not. More...
Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...
virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...
virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given 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	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...
bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space. More...
virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...
virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

Static Public Member Functions
static vtkTriangleStrip *	New ()
static vtkTypeBool	IsTypeOf (const char *type)
static vtkTriangleStrip *	SafeDownCast (vtkObjectBase *o)
static void	DecomposeStrip (int npts, const vtkIdType *pts, vtkCellArray *tris)
	Given a triangle strip, decompose it into a list of (triangle) polygons. More...
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 ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...
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...
static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...
static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkTriangleStrip ()
	~vtkTriangleStrip () override
Protected Member Functions inherited from vtkCell
virtual vtkObjectBase *	NewInstanceInternal () const
	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 ()
	These methods allow a command to exclusively grab all events. More...
Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()
virtual	~vtkObjectBase ()
virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)
virtual void	ReportReferences (vtkGarbageCollector *)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
vtkLine *	Line
vtkTriangle *	Triangle
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
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()
static vtkReallocingFunction	GetCurrentReallocFunction ()
static vtkFreeingFunction	GetCurrentFreeFunction ()
static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

a cell that represents a triangle strip

vtkTriangleStrip is a concrete implementation of vtkCell to represent a 2D triangle strip. A triangle strip is a compact representation of triangles connected edge to edge in strip fashion. The connectivity of a triangle strip is three points defining an initial triangle, then for each additional triangle, a single point that, combined with the previous two points, defines the next triangle.

Online Examples:

LinearCellDemo

TriangleStrip

WriteLegacyLinearCells

WriteXMLLinearCells

Definition at line 86 of file vtkTriangleStrip.h.

Member Typedef Documentation

Superclass

typedef vtkCell vtkTriangleStrip::Superclass

Definition at line 90 of file vtkTriangleStrip.h.

Constructor & Destructor Documentation

vtkTriangleStrip()

vtkTriangleStrip::vtkTriangleStrip ( )

protected

~vtkTriangleStrip()

vtkTriangleStrip::~vtkTriangleStrip ( )

overrideprotected

Member Function Documentation

New()

static vtkTriangleStrip * vtkTriangleStrip::New ( )

static

IsTypeOf()

static vtkTypeBool vtkTriangleStrip::IsTypeOf ( const char *  type )

static

IsA()

virtual vtkTypeBool vtkTriangleStrip::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 vtkTriangleStrip * vtkTriangleStrip::SafeDownCast ( vtkObjectBase *  o )

static

NewInstanceInternal()

virtual vtkObjectBase * vtkTriangleStrip::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkCell.

NewInstance()

vtkTriangleStrip * vtkTriangleStrip::NewInstance

(

)

const

PrintSelf()

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

overridevirtual

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 vtkTriangleStrip::GetCellType ( )

inlineoverridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 97 of file vtkTriangleStrip.h.

GetCellDimension()

int vtkTriangleStrip::GetCellDimension ( )

inlineoverridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 98 of file vtkTriangleStrip.h.

GetNumberOfEdges()

int vtkTriangleStrip::GetNumberOfEdges ( )

inlineoverridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 99 of file vtkTriangleStrip.h.

GetNumberOfFaces()

int vtkTriangleStrip::GetNumberOfFaces ( )

inlineoverridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Definition at line 100 of file vtkTriangleStrip.h.

GetEdge()

vtkCell * vtkTriangleStrip::GetEdge ( int  edgeId )

overridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

GetFace()

vtkCell * vtkTriangleStrip::GetFace ( int   vtkNotUsedfaceId )

inlineoverride

See the vtkCell API for descriptions of these methods.

Definition at line 102 of file vtkTriangleStrip.h.

CellBoundary()

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

overridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Contour()

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

overridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

Clip()

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

overridevirtual

See the vtkCell API for descriptions of these methods.

Implements vtkCell.

EvaluatePosition()

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

overridevirtual

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

overridevirtual

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

overridevirtual

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

overridevirtual

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

overridevirtual

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 vtkTriangleStrip::IsPrimaryCell ( )

inlineoverridevirtual

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 120 of file vtkTriangleStrip.h.

GetParametricCenter()

int vtkTriangleStrip::GetParametricCenter ( double  pcoords[3] )

overridevirtual

Return the center of the point cloud in parametric coordinates.

Reimplemented from vtkCell.

DecomposeStrip()

static void vtkTriangleStrip::DecomposeStrip ( int  npts, const vtkIdType *  pts, vtkCellArray *  tris  )

static

Given a triangle strip, decompose it into a list of (triangle) polygons.

The polygons are appended to the end of the list of triangles.

Member Data Documentation

Line

vtkLine* vtkTriangleStrip::Line

protected

Definition at line 137 of file vtkTriangleStrip.h.

Triangle

vtkTriangle* vtkTriangleStrip::Triangle

protected

Definition at line 138 of file vtkTriangleStrip.h.

---

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

• Common/DataModel/vtkTriangleStrip.h