vtkHull Class Reference

produce an n-sided convex hull More...

#include <vtkHull.h>

Inheritance diagram for vtkHull:

Collaboration diagram for vtkHull:

Public Types
typedef vtkPolyDataAlgorithm	Superclass
Public Types inherited from vtkPolyDataAlgorithm
typedef vtkAlgorithm	Superclass
Public Types inherited from vtkAlgorithm
enum	DesiredOutputPrecision { SINGLE_PRECISION, DOUBLE_PRECISION, DEFAULT_PRECISION }
	Values used for setting the desired output precision for various algorithms. More...
typedef vtkObject	Superclass

Public Member Functions
virtual int	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...
vtkHull *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...
void	RemoveAllPlanes (void)
	Remove all planes from the current set of planes. More...
void	SetPlanes (vtkPlanes *planes)
	Set all the planes at once using a vtkPlanes implicit function. More...
void	AddCubeVertexPlanes ()
	Add the 8 planes that represent the vertices of a cube - the combination of the three face planes connecting to a vertex - (1,1,1), (1,1,-1), (1,-1,1), (1,-1,1), (-1,1,1), (-1,1,-1), (-1,-1,1), (-1,-1-1). More...
void	AddCubeEdgePlanes ()
	Add the 12 planes that represent the edges of a cube - halfway between the two connecting face planes - (1,1,0), (-1,-1,0), (-1,1,0), (1,-1,0), (0,1,1), (0,-1,-1), (0,1,-1), (0,-1,1), (1,0,1), (-1,0,-1), (1,0,-1), (-1,0,1) More...
void	AddCubeFacePlanes ()
	Add the six planes that make up the faces of a cube - (1,0,0), (-1, 0, 0), (0,1,0), (0,-1,0), (0,0,1), (0,0,-1) More...
void	AddRecursiveSpherePlanes (int level)
	Add the planes that represent the normals of the vertices of a polygonal sphere formed by recursively subdividing the triangles in an octahedron. More...
int	AddPlane (double A, double B, double C)
	Add a plane to the current set of planes. More...
int	AddPlane (double plane[3])
	Add a plane to the current set of planes. More...
void	SetPlane (int i, double A, double B, double C)
	Set the normal values for plane i. More...
void	SetPlane (int i, double plane[3])
	Set the normal values for plane i. More...
int	AddPlane (double A, double B, double C, double D)
	Variations of AddPlane()/SetPlane() that allow D to be set. More...
int	AddPlane (double plane[3], double D)
	Variations of AddPlane()/SetPlane() that allow D to be set. More...
void	SetPlane (int i, double A, double B, double C, double D)
	Variations of AddPlane()/SetPlane() that allow D to be set. More...
void	SetPlane (int i, double plane[3], double D)
	Variations of AddPlane()/SetPlane() that allow D to be set. More...
virtual int	GetNumberOfPlanes ()
	Get the number of planes in the current set of planes. More...
void	GenerateHull (vtkPolyData *pd, double *bounds)
	A special method that is used to generate a polyhedron directly from a set of n planes. More...
void	GenerateHull (vtkPolyData *pd, double xmin, double xmax, double ymin, double ymax, double zmin, double zmax)
	A special method that is used to generate a polyhedron directly from a set of n planes. More...
Public Member Functions inherited from vtkPolyDataAlgorithm
vtkPolyDataAlgorithm *	NewInstance () const
int	ProcessRequest (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	see vtkAlgorithm for details More...
vtkDataObject *	GetInput ()
vtkDataObject *	GetInput (int port)
vtkPolyData *	GetPolyDataInput (int port)
vtkPolyData *	GetOutput ()
	Get the output data object for a port on this algorithm. More...
vtkPolyData *	GetOutput (int)
	Get the output data object for a port on this algorithm. More...
virtual void	SetOutput (vtkDataObject *d)
	Get the output data object for a port on this algorithm. More...
void	SetInputData (vtkDataObject *)
	Assign a data object as input. More...
void	SetInputData (int, vtkDataObject *)
	Assign a data object as input. More...
void	AddInputData (vtkDataObject *)
	Assign a data object as input. More...
void	AddInputData (int, vtkDataObject *)
	Assign a data object as input. More...
Public Member Functions inherited from vtkAlgorithm
vtkAlgorithm *	NewInstance () const
int	HasExecutive ()
	Check whether this algorithm has an assigned executive. More...
vtkExecutive *	GetExecutive ()
	Get this algorithm's executive. More...
virtual void	SetExecutive (vtkExecutive *executive)
	Set this algorithm's executive. More...
int	ProcessRequest (vtkInformation *request, vtkCollection *inInfo, vtkInformationVector *outInfo)
	Version of ProcessRequest() that is wrapped. More...
virtual int	ComputePipelineMTime (vtkInformation *request, vtkInformationVector **inInfoVec, vtkInformationVector *outInfoVec, int requestFromOutputPort, vtkMTimeType *mtime)
	A special version of ProcessRequest meant specifically for the pipeline modified time request. More...
virtual int	ModifyRequest (vtkInformation *request, int when)
	This method gives the algorithm a chance to modify the contents of a request before or after (specified in the when argument) it is forwarded. More...
vtkInformation *	GetInputPortInformation (int port)
	Get the information object associated with an input port. More...
vtkInformation *	GetOutputPortInformation (int port)
	Get the information object associated with an output port. More...
int	GetNumberOfInputPorts ()
	Get the number of input ports used by the algorithm. More...
int	GetNumberOfOutputPorts ()
	Get the number of output ports provided by the algorithm. More...
void	UpdateProgress (double amount)
	Update the progress of the process object. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, const char *fieldAssociation, const char *attributeTypeorName)
	String based versions of SetInputArrayToProcess(). More...
vtkInformation *	GetInputArrayInformation (int idx)
	Get the info object for the specified input array to this algorithm. More...
void	RemoveAllInputs ()
	Remove all the input data. More...
vtkDataObject *	GetOutputDataObject (int port)
	Get the data object that will contain the algorithm output for the given port. More...
vtkDataObject *	GetInputDataObject (int port, int connection)
	Get the data object that will contain the algorithm input for the given port and given connection. More...
virtual void	RemoveInputConnection (int port, vtkAlgorithmOutput *input)
	Remove a connection from the given input port index. More...
virtual void	RemoveInputConnection (int port, int idx)
	Remove a connection given by index idx. More...
virtual void	RemoveAllInputConnections (int port)
	Removes all input connections. More...
virtual void	SetInputDataObject (int port, vtkDataObject *data)
	Sets the data-object as an input on the given port index. More...
virtual void	SetInputDataObject (vtkDataObject *data)
virtual void	AddInputDataObject (int port, vtkDataObject *data)
	Add the data-object as an input to this given port. More...
virtual void	AddInputDataObject (vtkDataObject *data)
vtkAlgorithmOutput *	GetOutputPort (int index)
	Get a proxy object corresponding to the given output port of this algorithm. More...
vtkAlgorithmOutput *	GetOutputPort ()
int	GetNumberOfInputConnections (int port)
	Get the number of inputs currently connected to a port. More...
int	GetTotalNumberOfInputConnections ()
	Get the total number of inputs for this algorithm. More...
vtkAlgorithmOutput *	GetInputConnection (int port, int index)
	Get the algorithm output port connected to an input port. More...
vtkAlgorithm *	GetInputAlgorithm (int port, int index, int &algPort)
	Returns the algorithm and the output port index of that algorithm connected to a port-index pair. More...
vtkAlgorithm *	GetInputAlgorithm (int port, int index)
	Returns the algorithm connected to a port-index pair. More...
vtkAlgorithm *	GetInputAlgorithm ()
	Equivalent to GetInputAlgorithm(0, 0). More...
vtkExecutive *	GetInputExecutive (int port, int index)
	Returns the executive associated with a particular input connection. More...
vtkExecutive *	GetInputExecutive ()
	Equivalent to GetInputExecutive(0, 0) More...
vtkInformation *	GetInputInformation (int port, int index)
	Return the information object that is associated with a particular input connection. More...
vtkInformation *	GetInputInformation ()
	Equivalent to GetInputInformation(0, 0) More...
vtkInformation *	GetOutputInformation (int port)
	Return the information object that is associated with a particular output port. More...
virtual int	Update (int port, vtkInformationVector *requests)
	This method enables the passing of data requests to the algorithm to be used during execution (in addition to bringing a particular port up-to-date). More...
virtual int	Update (vtkInformation *requests)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdatePiece (int piece, int numPieces, int ghostLevels, const int extents[6]=0)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdateExtent (const int extents[6])
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual int	UpdateTimeStep (double time, int piece=-1, int numPieces=1, int ghostLevels=0, const int extents[6]=0)
	Convenience method to update an algorithm after passing requests to its first output port. More...
virtual void	UpdateInformation ()
	Bring the algorithm's information up-to-date. More...
virtual void	UpdateDataObject ()
	Create output object(s). More...
virtual void	PropagateUpdateExtent ()
	Propagate meta-data upstream. More...
virtual void	UpdateWholeExtent ()
	Bring this algorithm's outputs up-to-date. More...
void	ConvertTotalInputToPortConnection (int ind, int &port, int &conn)
	Convenience routine to convert from a linear ordering of input connections to a port/connection pair. More...
int	SetUpdateExtentToWholeExtent (int port)
	If the whole output extent is required, this method can be called to set the output update extent to the whole extent. More...
int	SetUpdateExtentToWholeExtent ()
	Convenience function equivalent to SetUpdateExtentToWholeExtent(0) This method assumes that the whole extent is known (that UpdateInformation has been called). More...
void	SetUpdateExtent (int port, int piece, int numPieces, int ghostLevel)
	Set the output update extent in terms of piece and ghost levels. More...
void	SetUpdateExtent (int piece, int numPieces, int ghostLevel)
	Convenience function equivalent to SetUpdateExtent(0, piece, numPieces, ghostLevel) More...
void	SetUpdateExtent (int port, int extent[6])
	Set the output update extent for data objects that use 3D extents. More...
void	SetUpdateExtent (int extent[6])
	Convenience function equivalent to SetUpdateExtent(0, extent) More...
virtual vtkInformation *	GetInformation ()
	Set/Get the information object associated with this algorithm. More...
virtual void	SetInformation (vtkInformation *)
	Set/Get the information object associated with this algorithm. More...
void	Register (vtkObjectBase *o) override
	Participate in garbage collection. More...
void	UnRegister (vtkObjectBase *o) override
	Participate in garbage collection. More...
virtual void	SetAbortExecute (int)
	Set/Get the AbortExecute flag for the process object. More...
virtual int	GetAbortExecute ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	AbortExecuteOn ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	AbortExecuteOff ()
	Set/Get the AbortExecute flag for the process object. More...
virtual void	SetProgress (double)
	Set/Get the execution progress of a process object. More...
virtual double	GetProgress ()
	Set/Get the execution progress of a process object. More...
void	SetProgressText (const char *ptext)
	Set the current text message associated with the progress state. More...
virtual char *	GetProgressText ()
	Set the current text message associated with the progress state. More...
virtual unsigned long	GetErrorCode ()
	The error code contains a possible error that occurred while reading or writing the file. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, const char *name)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputArrayToProcess (int idx, int port, int connection, int fieldAssociation, int fieldAttributeType)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputArrayToProcess (int idx, vtkInformation *info)
	Set the input data arrays that this algorithm will process. More...
virtual void	SetInputConnection (int port, vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...
virtual void	SetInputConnection (vtkAlgorithmOutput *input)
	Set the connection for the given input port index. More...
virtual void	AddInputConnection (int port, vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...
virtual void	AddInputConnection (vtkAlgorithmOutput *input)
	Add a connection to the given input port index. More...
virtual void	Update (int port)
	Bring this algorithm's outputs up-to-date. More...
virtual void	Update ()
	Bring this algorithm's outputs up-to-date. More...
virtual void	SetReleaseDataFlag (int)
	Turn release data flag on or off for all output ports. More...
virtual int	GetReleaseDataFlag ()
	Turn release data flag on or off for all output ports. More...
void	ReleaseDataFlagOn ()
	Turn release data flag on or off for all output ports. More...
void	ReleaseDataFlagOff ()
	Turn release data flag on or off for all output ports. More...
int	UpdateExtentIsEmpty (vtkInformation *pinfo, vtkDataObject *output)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...
int	UpdateExtentIsEmpty (vtkInformation *pinfo, int extentType)
	This detects when the UpdateExtent will generate no data This condition is satisfied when the UpdateExtent has zero volume (0,-1,...) or the UpdateNumberOfPieces is 0. More...
int *	GetUpdateExtent ()
	These functions return the update extent for output ports that use 3D extents. More...
int *	GetUpdateExtent (int port)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int port, int &x0, int &x1, int &y0, int &y1, int &z0, int &z1)
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...
void	GetUpdateExtent (int port, int extent[6])
	These functions return the update extent for output ports that use 3D extents. More...
int	GetUpdatePiece ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdatePiece (int port)
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateNumberOfPieces ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateNumberOfPieces (int port)
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateGhostLevel ()
	These functions return the update extent for output ports that use piece extents. More...
int	GetUpdateGhostLevel (int port)
	These functions return the update extent for output ports that use piece extents. More...
void	SetProgressObserver (vtkProgressObserver *)
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. More...
virtual vtkProgressObserver *	GetProgressObserver ()
	If an ProgressObserver is set, the algorithm will report progress through it rather than directly. 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	RemoveObserver (unsigned long tag)
void	RemoveObservers (unsigned long event)
void	RemoveObservers (const char *event)
void	RemoveAllObservers ()
int	HasObserver (unsigned long event)
int	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...
int	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...
int	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 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...
int	GetReferenceCount ()
	Return the current reference count of this object. More...
void	SetReferenceCount (int)
	Sets the reference count. More...
void	PrintRevisions (ostream &)
	Legacy. 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 vtkHull *	New ()
static int	IsTypeOf (const char *type)
static vtkHull *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkPolyDataAlgorithm
static vtkPolyDataAlgorithm *	New ()
static int	IsTypeOf (const char *type)
static vtkPolyDataAlgorithm *	SafeDownCast (vtkObjectBase *o)
Static Public Member Functions inherited from vtkAlgorithm
static vtkAlgorithm *	New ()
static int	IsTypeOf (const char *type)
static vtkAlgorithm *	SafeDownCast (vtkObjectBase *o)
static vtkInformationIntegerKey *	INPUT_IS_OPTIONAL ()
	Keys used to specify input port requirements. More...
static vtkInformationIntegerKey *	INPUT_IS_REPEATABLE ()
static vtkInformationInformationVectorKey *	INPUT_REQUIRED_FIELDS ()
static vtkInformationStringVectorKey *	INPUT_REQUIRED_DATA_TYPE ()
static vtkInformationInformationVectorKey *	INPUT_ARRAYS_TO_PROCESS ()
static vtkInformationIntegerKey *	INPUT_PORT ()
static vtkInformationIntegerKey *	INPUT_CONNECTION ()
static vtkInformationIntegerKey *	CAN_PRODUCE_SUB_EXTENT ()
	This key tells the executive that a particular output port is capable of producing an arbitrary subextent of the whole extent. More...
static vtkInformationIntegerKey *	CAN_HANDLE_PIECE_REQUEST ()
	Key that tells the pipeline that a particular algorithm can or cannot handle piece request. More...
static void	SetDefaultExecutivePrototype (vtkExecutive *proto)
	If the DefaultExecutivePrototype is set, a copy of it is created in CreateDefaultExecutive() using NewInstance(). More...
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 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
	vtkHull ()
	~vtkHull () override
void	ComputePlaneDistances (vtkPolyData *input)
void	ClipPolygonsFromPlanes (vtkPoints *points, vtkCellArray *polys, double *bounds)
void	CreateInitialPolygon (double *, int, double *)
int	RequestData (vtkInformation *, vtkInformationVector **, vtkInformationVector *) override
	This is called by the superclass. More...
Protected Member Functions inherited from vtkPolyDataAlgorithm
	vtkPolyDataAlgorithm ()
	~vtkPolyDataAlgorithm () override
virtual int	RequestInformation (vtkInformation *request, vtkInformationVector **inputVector, vtkInformationVector *outputVector)
virtual int	RequestUpdateExtent (vtkInformation *, vtkInformationVector **, vtkInformationVector *)
	This is called by the superclass. More...
int	FillOutputPortInformation (int port, vtkInformation *info) override
	Fill the output port information objects for this algorithm. More...
int	FillInputPortInformation (int port, vtkInformation *info) override
	Fill the input port information objects for this algorithm. More...
Protected Member Functions inherited from vtkAlgorithm
	vtkAlgorithm ()
	~vtkAlgorithm () override
virtual void	SetNumberOfInputPorts (int n)
	Set the number of input ports used by the algorithm. More...
virtual void	SetNumberOfOutputPorts (int n)
	Set the number of output ports provided by the algorithm. More...
int	InputPortIndexInRange (int index, const char *action)
int	OutputPortIndexInRange (int index, const char *action)
int	GetInputArrayAssociation (int idx, vtkInformationVector **inputVector)
	Get the assocition of the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkInformation *	GetInputArrayFieldInformation (int idx, vtkInformationVector **inputVector)
	This method takes in an index (as specified in SetInputArrayToProcess) and a pipeline information vector. More...
virtual vtkExecutive *	CreateDefaultExecutive ()
	Create a default executive. More...
void	ReportReferences (vtkGarbageCollector *) override
virtual void	SetNthInputConnection (int port, int index, vtkAlgorithmOutput *input)
	Replace the Nth connection on the given input port. More...
virtual void	SetNumberOfInputConnections (int port, int n)
	Set the number of input connections on the given input port. More...
void	SetInputDataInternal (int port, vtkDataObject *input)
	These methods are used by subclasses to implement methods to set data objects directly as input. More...
void	AddInputDataInternal (int port, vtkDataObject *input)
int	GetInputArrayAssociation (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
int	GetInputArrayAssociation (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkDataArray *	GetInputArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkInformationVector **inputVector, int &association)
	Get the actual data array for the input array specified by idx, this is only reasonable during the REQUEST_DATA pass. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, int connection, vtkInformationVector **inputVector, int &association)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input)
	Filters that have multiple connections on one port can use this signature. More...
vtkAbstractArray *	GetInputAbstractArrayToProcess (int idx, vtkDataObject *input, int &association)
	Filters that have multiple connections on one port can use this signature. More...
virtual void	SetErrorCode (unsigned long)
	The error code contains a possible error that occurred while reading or writing the file. More...
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=NULL)
	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	CollectRevisions (ostream &)
	vtkObjectBase (const vtkObjectBase &)
void	operator= (const vtkObjectBase &)

Protected Attributes
double *	Planes
int	PlanesStorageSize
int	NumberOfPlanes
Protected Attributes inherited from vtkAlgorithm
vtkInformation *	Information
double	Progress
char *	ProgressText
vtkProgressObserver *	ProgressObserver
unsigned long	ErrorCode
	The error code contains a possible error that occurred while reading or writing the file. More...
Protected Attributes inherited from vtkObject
bool	Debug
vtkTimeStamp	MTime
vtkSubjectHelper *	SubjectHelper
Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount
vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Public Attributes inherited from vtkAlgorithm
int	AbortExecute
Static Protected Member Functions inherited from vtkAlgorithm
static vtkInformationIntegerKey *	PORT_REQUIREMENTS_FILLED ()
Static Protected Attributes inherited from vtkAlgorithm
static vtkExecutive *	DefaultExecutivePrototype

Detailed Description

produce an n-sided convex hull

vtkHull is a filter which will produce an n-sided convex hull given a set of n planes. (The convex hull bounds the input polygonal data.) The hull is generated by squeezing the planes towards the input vtkPolyData, until the planes just touch the vtkPolyData. Then, the resulting planes are used to generate a polyhedron (i.e., hull) that is represented by triangles.

The n planes can be defined in a number of ways including 1) manually specifying each plane; 2) choosing the six face planes of the input's bounding box; 3) choosing the eight vertex planes of the input's bounding box; 4) choosing the twelve edge planes of the input's bounding box; and/or 5) using a recursively subdivided octahedron. Note that when specifying planes, the plane normals should point outside of the convex region.

The output of this filter can be used in combination with vtkLODActor to represent a levels-of-detail in the LOD hierarchy. Another use of this class is to manually specify the planes, and then generate the polyhedron from the planes (without squeezing the planes towards the input). The method GenerateHull() is used to do this.

Tests:

vtkHull (Tests)

Definition at line 55 of file vtkHull.h.

Member Typedef Documentation

typedef vtkPolyDataAlgorithm vtkHull::Superclass

Definition at line 59 of file vtkHull.h.

Constructor & Destructor Documentation

vtkHull::vtkHull ( )

protected

vtkHull::~vtkHull ( )

overrideprotected

Member Function Documentation

static vtkHull* vtkHull::New ( )

static

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

static

virtual int vtkHull::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 vtkPolyDataAlgorithm.

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

static

virtual vtkObjectBase* vtkHull::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkPolyDataAlgorithm.

vtkHull* vtkHull::NewInstance

(

)

const

void vtkHull::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 vtkPolyDataAlgorithm.

void vtkHull::RemoveAllPlanes

(

void

)

Remove all planes from the current set of planes.

int vtkHull::AddPlane	(	double	A,
		double	B,
		double	C
	)

Add a plane to the current set of planes.

It will be added at the end of the list, and an index that can later be used to set this plane's normal will be returned. The values A, B, C are from the plane equation Ax + By + Cz + D = 0. This vector does not have to have unit length (but it must have a non-zero length!). If a value 0 > i >= -NumberOfPlanes is returned, then the plane is parallel with a previously inserted plane, and |-i-1| is the index of the plane that was previously inserted. If a value i < -NumberOfPlanes is returned, then the plane normal is zero length.

int vtkHull::AddPlane

(

double

plane[3]

)

Add a plane to the current set of planes.

It will be added at the end of the list, and an index that can later be used to set this plane's normal will be returned. The values A, B, C are from the plane equation Ax + By + Cz + D = 0. This vector does not have to have unit length (but it must have a non-zero length!). If a value 0 > i >= -NumberOfPlanes is returned, then the plane is parallel with a previously inserted plane, and |-i-1| is the index of the plane that was previously inserted. If a value i < -NumberOfPlanes is returned, then the plane normal is zero length.

void vtkHull::SetPlane	(	int	i,
		double	A,
		double	B,
		double	C
	)

Set the normal values for plane i.

This is a plane that was already added to the current set of planes with AddPlane(), and is now being modified. The values A, B, C are from the plane equation Ax + By + Cz + D = 0. This vector does not have to have unit length. Note that D is set to zero, except in the case of the method taking a vtkPlanes* argument, where it is set to the D value defined there.

void vtkHull::SetPlane	(	int	i,
		double	plane[3]
	)

Set the normal values for plane i.

This is a plane that was already added to the current set of planes with AddPlane(), and is now being modified. The values A, B, C are from the plane equation Ax + By + Cz + D = 0. This vector does not have to have unit length. Note that D is set to zero, except in the case of the method taking a vtkPlanes* argument, where it is set to the D value defined there.

int vtkHull::AddPlane	(	double	A,
		double	B,
		double	C,
		double	D
	)

Variations of AddPlane()/SetPlane() that allow D to be set.

These methods are used when GenerateHull() is used.

int vtkHull::AddPlane	(	double	plane[3],
		double	D
	)

Variations of AddPlane()/SetPlane() that allow D to be set.

These methods are used when GenerateHull() is used.

void vtkHull::SetPlane	(	int	i,
		double	A,
		double	B,
		double	C,
		double	D
	)

Variations of AddPlane()/SetPlane() that allow D to be set.

These methods are used when GenerateHull() is used.

void vtkHull::SetPlane	(	int	i,
		double	plane[3],
		double	D
	)

Variations of AddPlane()/SetPlane() that allow D to be set.

These methods are used when GenerateHull() is used.

void vtkHull::SetPlanes

(

vtkPlanes *

planes

)

Set all the planes at once using a vtkPlanes implicit function.

This also sets the D value, so it can be used with GenerateHull().

virtual int vtkHull::GetNumberOfPlanes ( )

virtual

Get the number of planes in the current set of planes.

void vtkHull::AddCubeVertexPlanes

(

)

Add the 8 planes that represent the vertices of a cube - the combination of the three face planes connecting to a vertex - (1,1,1), (1,1,-1), (1,-1,1), (1,-1,1), (-1,1,1), (-1,1,-1), (-1,-1,1), (-1,-1-1).

void vtkHull::AddCubeEdgePlanes

(

)

Add the 12 planes that represent the edges of a cube - halfway between the two connecting face planes - (1,1,0), (-1,-1,0), (-1,1,0), (1,-1,0), (0,1,1), (0,-1,-1), (0,1,-1), (0,-1,1), (1,0,1), (-1,0,-1), (1,0,-1), (-1,0,1)

void vtkHull::AddCubeFacePlanes

(

)

Add the six planes that make up the faces of a cube - (1,0,0), (-1, 0, 0), (0,1,0), (0,-1,0), (0,0,1), (0,0,-1)

void vtkHull::AddRecursiveSpherePlanes

(

int

level

)

Add the planes that represent the normals of the vertices of a polygonal sphere formed by recursively subdividing the triangles in an octahedron.

Each triangle is subdivided by connecting the midpoints of the edges thus forming 4 smaller triangles. The level indicates how many subdivisions to do with a level of 0 used to add the 6 planes from the original octahedron, level 1 will add 18 planes, and so on.

void vtkHull::GenerateHull	(	vtkPolyData *	pd,
		double *	bounds
	)

A special method that is used to generate a polyhedron directly from a set of n planes.

The planes that are supplied by the user are not squeezed towards the input data (in fact the user need not specify an input). To use this method, you must provide an instance of vtkPolyData into which the points and cells defining the polyhedron are placed. You must also provide a bounding box where you expect the resulting polyhedron to lie. This can be a very generous fit, it's only used to create the initial polygons that are eventually clipped.

void vtkHull::GenerateHull	(	vtkPolyData *	pd,
		double	xmin,
		double	xmax,
		double	ymin,
		double	ymax,
		double	zmin,
		double	zmax
	)

A special method that is used to generate a polyhedron directly from a set of n planes.

The planes that are supplied by the user are not squeezed towards the input data (in fact the user need not specify an input). To use this method, you must provide an instance of vtkPolyData into which the points and cells defining the polyhedron are placed. You must also provide a bounding box where you expect the resulting polyhedron to lie. This can be a very generous fit, it's only used to create the initial polygons that are eventually clipped.

void vtkHull::ComputePlaneDistances ( vtkPolyData *  input )

protected

void vtkHull::ClipPolygonsFromPlanes ( vtkPoints *  points, vtkCellArray *  polys, double *  bounds  )

protected

void vtkHull::CreateInitialPolygon ( double *  , int  , double *    )

protected

int vtkHull::RequestData ( vtkInformation *  request, vtkInformationVector **  inputVector, vtkInformationVector *  outputVector  )

overrideprotectedvirtual

This is called by the superclass.

This is the method you should override.

Reimplemented from vtkPolyDataAlgorithm.

Member Data Documentation

double* vtkHull::Planes

protected

Definition at line 174 of file vtkHull.h.

int vtkHull::PlanesStorageSize

protected

Definition at line 179 of file vtkHull.h.

int vtkHull::NumberOfPlanes

protected

Definition at line 182 of file vtkHull.h.

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

• /home/demarle/Builds/VTK/release/Utilities/Doxygen/dox/Filters/Core/vtkHull.h