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

#include <vtkAttributesErrorMetric.h>

Inheritance diagram for vtkAttributesErrorMetric:

Collaboration diagram for vtkAttributesErrorMetric:

Public Member Functions
void	SetAbsoluteAttributeTolerance (double value)

void	SetAttributeTolerance (double value)


virtual double	GetAbsoluteAttributeTolerance ()


virtual double	GetAttributeTolerance ()


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


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

Public Member Functions inherited from vtkGenericSubdivisionErrorMetric
void	SetGenericCell (vtkGenericAdaptorCell *cell)

virtual vtkGenericAdaptorCell *	GetGenericCell ()

void	SetDataSet (vtkGenericDataSet *ds)

virtual vtkGenericDataSet *	GetDataSet ()

vtkGenericSubdivisionErrorMetric *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const

virtual void	DebugOn ()

virtual void	DebugOff ()

bool	GetDebug ()

void	SetDebug (bool debugFlag)

virtual void	Modified ()

virtual unsigned long	GetMTime ()

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)

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 )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

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)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)

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)

int	InvokeEvent (unsigned long event, void *callData)

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

virtual void	Delete ()

virtual void	FastDelete ()

void	Print (ostream &os)

virtual void	Register (vtkObjectBase *o)

virtual void	UnRegister (vtkObjectBase *o)

void	SetReferenceCount (int)

void	PrintRevisions (ostream &)

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

int	GetReferenceCount ()

Static Public Member Functions
static vtkAttributesErrorMetric *	New ()

Static Public Member Functions inherited from vtkGenericSubdivisionErrorMetric
static int	IsTypeOf (const char *type)

static vtkGenericSubdivisionErrorMetric *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)

static vtkObject *	SafeDownCast (vtkObjectBase *o)

static vtkObject *	New ()

static void	BreakOnError ()

static void	SetGlobalWarningDisplay (int val)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)

static vtkObjectBase *	New ()

Protected Member Functions
	vtkAttributesErrorMetric ()

virtual	~vtkAttributesErrorMetric ()

void	ComputeSquareAbsoluteAttributeTolerance ()

Protected Member Functions inherited from vtkGenericSubdivisionErrorMetric
	vtkGenericSubdivisionErrorMetric ()

	~vtkGenericSubdivisionErrorMetric ()

Protected Member Functions inherited from vtkObject
	vtkObject ()

virtual	~vtkObject ()

virtual void	RegisterInternal (vtkObjectBase *, int check)

virtual void	UnRegisterInternal (vtkObjectBase *, int check)

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)

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
double	AttributeTolerance

double	SquareAbsoluteAttributeTolerance

double	AbsoluteAttributeTolerance

int	DefinedByAbsolute

vtkTimeStamp	SquareAbsoluteAttributeToleranceComputeTime

double	Range

vtkGenericAttributeCollection *	AttributeCollection

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

static int	IsTypeOf (const char *type)

static vtkAttributesErrorMetric *	SafeDownCast (vtkObjectBase *o)

virtual int	IsA (const char *type)

vtkAttributesErrorMetric *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

virtual vtkObjectBase *	NewInstanceInternal () const

Additional Inherited Members
Public Types inherited from vtkGenericSubdivisionErrorMetric
typedef vtkObject	Superclass

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Detailed Description

Objects that compute attribute-based error during cell tessellation.

It is a concrete error metric, based on an attribute criterium: the variation of the active attribute/component value from a linear ramp

See also: vtkGenericCellTessellator vtkGenericSubdivisionErrorMetric

Tests:: vtkAttributesErrorMetric (Tests)

Definition at line 39 of file vtkAttributesErrorMetric.h.

Member Typedef Documentation

typedef vtkGenericSubdivisionErrorMetric vtkAttributesErrorMetric::Superclass

Standard VTK type and error macros.

Definition at line 48 of file vtkAttributesErrorMetric.h.

Constructor & Destructor Documentation

vtkAttributesErrorMetric::vtkAttributesErrorMetric ( )

protected

virtual vtkAttributesErrorMetric::~vtkAttributesErrorMetric ( )

protectedvirtual

Member Function Documentation

static vtkAttributesErrorMetric* vtkAttributesErrorMetric::New ( )

static

Construct the error metric with a default relative attribute accuracy equal to 0.1.

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

static

Standard VTK type and error macros.

virtual int vtkAttributesErrorMetric::IsA ( const char * type )

virtual

Standard VTK type and error macros.

Reimplemented from vtkGenericSubdivisionErrorMetric.

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

static

Standard VTK type and error macros.

virtual vtkObjectBase* vtkAttributesErrorMetric::NewInstanceInternal ( ) const

protectedvirtual

Standard VTK type and error macros.

Reimplemented from vtkGenericSubdivisionErrorMetric.

vtkAttributesErrorMetric* vtkAttributesErrorMetric::NewInstance ( ) const

Standard VTK type and error macros.

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

virtual

Standard VTK type and error macros.

Reimplemented from vtkObject.

virtual double vtkAttributesErrorMetric::GetAbsoluteAttributeTolerance ( )

virtual

Absolute tolerance of the active scalar (attribute+component). Subdivision is required if the square distance between the real attribute at the mid point on the edge and the interpolated attribute is greater than AbsoluteAttributeTolerance. This is the attribute accuracy. 0.01 will give better result than 0.1.

void vtkAttributesErrorMetric::SetAbsoluteAttributeTolerance ( double value )

Set the absolute attribute accuracy to `value'. See GetAbsoluteAttributeTolerance() for details. It is particularly useful when some concrete implementation of vtkGenericAttribute does not support GetRange() request, called internally in SetAttributeTolerance(). It may happen when the implementation support higher order attributes but cannot compute the range.

Precondition: valid_range_value: value>0

virtual double vtkAttributesErrorMetric::GetAttributeTolerance ( )

virtual

Relative tolerance of the active scalar (attribute+component). Subdivision is required if the square distance between the real attribute at the mid point on the edge and the interpolated attribute is greater than AttributeTolerance. This is the attribute accuracy. 0.01 will give better result than 0.1.

void vtkAttributesErrorMetric::SetAttributeTolerance ( double value )

Set the relative attribute accuracy to `value'. See GetAttributeTolerance() for details.

Precondition: valid_range_value: value>0 && value<1

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

virtual

Does the edge need to be subdivided according to the distance between the value of the active attribute/component at the midpoint and the mean value between the endpoints? 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 vtkAttributesErrorMetric::GetError	(	double *	leftPoint,
		double *	midPoint,
		double *	rightPoint,
		double	alpha
	)

virtual

Return the error at the mid-point. The type of error depends on the state of the concrete error metric. For instance, it can return an absolute or relative error metric. 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