Objects that compute geometry-based error during cell tessellation. More...

#include <vtkGeometricErrorMetric.h>

Inheritance diagram for vtkGeometricErrorMetric:

Collaboration diagram for vtkGeometricErrorMetric:

Public Member Functions
void	SetAbsoluteGeometricTolerance (double value)
	Set the geometric accuracy with a squared absolute value. More...

void	SetRelativeGeometricTolerance (double value, vtkGenericDataSet *ds)
	Set the geometric accuracy with a value relative to the length of the bounding box of the dataset. More...

int	RequiresEdgeSubdivision (double leftPoint, double midPoint, double *rightPoint, double alpha) override
	Does the edge need to be subdivided according to the distance between the line passing through its endpoints and the mid point? The edge is defined by its `leftPoint' and its `rightPoint'. More...

double	GetError (double leftPoint, double midPoint, double *rightPoint, double alpha) override
	Return the error at the mid-point. More...

int	GetRelative ()
	Return the type of output of GetError() More...


virtual double	GetAbsoluteGeometricTolerance ()
	Return the squared absolute geometric accuracy. More...

Public Member Functions inherited from vtkGenericSubdivisionErrorMetric
void	SetGenericCell (vtkGenericAdaptorCell *cell)
	The cell that the edge belongs to. More...

virtual vtkGenericAdaptorCell *	GetGenericCell ()
	The cell that the edge belongs to. More...

void	SetDataSet (vtkGenericDataSet *ds)
	Set/Get the dataset to be tessellated. More...

virtual vtkGenericDataSet *	GetDataSet ()
	Set/Get the dataset to be tessellated. More...

vtkGenericSubdivisionErrorMetric *	NewInstance () const
	Standard VTK type and error macros. 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 ()

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 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...

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 vtkGeometricErrorMetric *	New ()
	Construct the error metric with a default squared absolute geometric accuracy equal to 1. More...

Static Public Member Functions inherited from vtkGenericSubdivisionErrorMetric
static vtkTypeBool	IsTypeOf (const char *type)
	Standard VTK type and error macros. More...

static vtkGenericSubdivisionErrorMetric *	SafeDownCast (vtkObjectBase *o)
	Standard VTK type and error macros. 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
	vtkGeometricErrorMetric ()

	~vtkGeometricErrorMetric () override

double	Distance2LinePoint (double x[3], double y[3], double z[3])
	Square distance between a straight line (defined by points x and y) and a point z. More...

Protected Member Functions inherited from vtkGenericSubdivisionErrorMetric
	vtkGenericSubdivisionErrorMetric ()

	~vtkGenericSubdivisionErrorMetric () 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	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
double	AbsoluteGeometricTolerance

double	SmallestSize

int	Relative

Protected Attributes inherited from vtkGenericSubdivisionErrorMetric
vtkGenericAdaptorCell *	GenericCell

vtkGenericDataSet *	DataSet

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

typedef vtkGenericSubdivisionErrorMetric	Superclass
	Standard VTK type and error macros. More...

static vtkTypeBool	IsTypeOf (const char *type)
	Standard VTK type and error macros. More...

static vtkGeometricErrorMetric *	SafeDownCast (vtkObjectBase *o)
	Standard VTK type and error macros. More...

virtual vtkTypeBool	IsA (const char *type)
	Standard VTK type and error macros. More...

vtkGeometricErrorMetric *	NewInstance () const
	Standard VTK type and error macros. More...

void	PrintSelf (ostream &os, vtkIndent indent) override
	Standard VTK type and error macros. More...

virtual vtkObjectBase *	NewInstanceInternal () const
	Standard VTK type and error macros. More...

Additional Inherited Members
Public Types inherited from vtkGenericSubdivisionErrorMetric
typedef vtkObject	Superclass
	Standard VTK type and error macros. More...

Detailed Description

Objects that compute geometry-based error during cell tessellation.

It is a concrete error metric, based on a geometric criterium: the variation of the edge from a straight line.

See also: vtkGenericCellTessellator vtkGenericSubdivisionErrorMetric

Tests:: vtkGeometricErrorMetric (Tests)

Definition at line 39 of file vtkGeometricErrorMetric.h.

Member Typedef Documentation

typedef vtkGenericSubdivisionErrorMetric vtkGeometricErrorMetric::Superclass

Standard VTK type and error macros.

Definition at line 52 of file vtkGeometricErrorMetric.h.

Constructor & Destructor Documentation

vtkGeometricErrorMetric::vtkGeometricErrorMetric ( )

protected

vtkGeometricErrorMetric::~vtkGeometricErrorMetric ( )

overrideprotected

Member Function Documentation

static vtkGeometricErrorMetric* vtkGeometricErrorMetric::New ( )

static

Construct the error metric with a default squared absolute geometric accuracy equal to 1.

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

static

Standard VTK type and error macros.

virtual vtkTypeBool vtkGeometricErrorMetric::IsA ( const char * type )

virtual

Standard VTK type and error macros.

Reimplemented from vtkGenericSubdivisionErrorMetric.

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

static

Standard VTK type and error macros.

virtual vtkObjectBase* vtkGeometricErrorMetric::NewInstanceInternal ( ) const

protectedvirtual

Standard VTK type and error macros.

Reimplemented from vtkGenericSubdivisionErrorMetric.

vtkGeometricErrorMetric* vtkGeometricErrorMetric::NewInstance ( ) const

Standard VTK type and error macros.

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

overridevirtual

Standard VTK type and error macros.

Reimplemented from vtkGenericSubdivisionErrorMetric.

virtual double vtkGeometricErrorMetric::GetAbsoluteGeometricTolerance ( )

virtual

Return the squared absolute geometric accuracy.

See SetAbsoluteGeometricTolerance() for details.

Postcondition: positive_result: result>0

void vtkGeometricErrorMetric::SetAbsoluteGeometricTolerance ( double value )

Set the geometric accuracy with a squared absolute value.

This is the geometric object-based accuracy. Subdivision will be required if the square distance between the real point and the straight line passing through the vertices of the edge is greater than `value'. For instance 0.01 will give better result than 0.1.

Precondition: positive_value: value>0

void vtkGeometricErrorMetric::SetRelativeGeometricTolerance	(	double	value,
		vtkGenericDataSet *	ds
	)

Set the geometric accuracy with a value relative to the length of the bounding box of the dataset.

Internally compute the absolute tolerance. For instance 0.01 will give better result than 0.1.

Precondition: valid_range_value: value>0 && value<1; ds_exists: ds!=0

int vtkGeometricErrorMetric::RequiresEdgeSubdivision	(	double *	leftPoint,
		double *	midPoint,
		double *	rightPoint,
		double	alpha
	)

overridevirtual

Does the edge need to be subdivided according to the distance between the line passing through its endpoints and the mid point? The edge is defined by its `leftPoint' and its `rightPoint'.

`leftPoint', `midPoint' and `rightPoint' have to be initialized before calling RequiresEdgeSubdivision(). Their format is global coordinates, parametric coordinates and point centered attributes: xyx rst abc de... `alpha' is the normalized abscissa of the midpoint along the edge. (close to 0 means close to the left point, close to 1 means close to the right point)

Precondition: leftPoint_exists: leftPoint!=0; midPoint_exists: midPoint!=0; rightPoint_exists: rightPoint!=0; clamped_alpha: alpha>0 && alpha<1; valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6

Implements vtkGenericSubdivisionErrorMetric.

double vtkGeometricErrorMetric::GetError	(	double *	leftPoint,
		double *	midPoint,
		double *	rightPoint,
		double	alpha
	)

overridevirtual

Return the error at the mid-point.

It will return an error relative to the bounding box size if GetRelative() is true, a square absolute error otherwise. See RequiresEdgeSubdivision() for a description of the arguments.

Precondition: leftPoint_exists: leftPoint!=0; midPoint_exists: midPoint!=0; rightPoint_exists: rightPoint!=0; clamped_alpha: alpha>0 && alpha<1; valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6

Postcondition: positive_result: result>=0

Implements vtkGenericSubdivisionErrorMetric.

int vtkGeometricErrorMetric::GetRelative ( )

Return the type of output of GetError()

double vtkGeometricErrorMetric::Distance2LinePoint	(	double	x[3],
		double	y[3],
		double	z[3]
	)

protected

Square distance between a straight line (defined by points x and y) and a point z.

Property: if x and y are equal, the line is a point and the result is the square distance between points x and z.

Member Data Documentation

double vtkGeometricErrorMetric::AbsoluteGeometricTolerance

protected

Definition at line 140 of file vtkGeometricErrorMetric.h.

double vtkGeometricErrorMetric::SmallestSize

protected

Definition at line 141 of file vtkGeometricErrorMetric.h.

int vtkGeometricErrorMetric::Relative

protected

Definition at line 142 of file vtkGeometricErrorMetric.h.

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

/home/demarle/Source/VTK/release/8.2/build/Utilities/Doxygen/dox/Common/DataModel/vtkGeometricErrorMetric.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation