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Protected Member Functions | Protected Attributes | List of all members
vtkGenericSubdivisionErrorMetric Class Reference

Objects that compute error during cell tessellation. More...

#include <vtkGenericSubdivisionErrorMetric.h>

Inheritance diagram for vtkGenericSubdivisionErrorMetric:
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Collaboration diagram for vtkGenericSubdivisionErrorMetric:
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Public Member Functions

virtual int RequiresEdgeSubdivision (double *leftPoint, double *midPoint, double *rightPoint, double alpha)=0
virtual double GetError (double *leftPoint, double *midPoint, double *rightPoint, double alpha)=0
void SetGenericCell (vtkGenericAdaptorCell *cell)
virtual vtkGenericAdaptorCellGetGenericCell ()
void SetDataSet (vtkGenericDataSet *ds)
virtual vtkGenericDataSetGetDataSet ()
- Public Member Functions inherited from vtkObject
virtual void DebugOn ()
virtual void DebugOff ()
unsigned char GetDebug ()
void SetDebug (unsigned char 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)
vtkCommandGetCommand (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)
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 &os)
virtual void PrintHeader (ostream &os, vtkIndent indent)
virtual void PrintTrailer (ostream &os, vtkIndent indent)
int GetReferenceCount ()

Protected Member Functions

 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 &os)
virtual void ReportReferences (vtkGarbageCollector *)
 vtkObjectBase (const vtkObjectBase &)
void operator= (const vtkObjectBase &)

Protected Attributes

vtkGenericAdaptorCellGenericCell
vtkGenericDataSetDataSet
- Protected Attributes inherited from vtkObject
unsigned char Debug
vtkTimeStamp MTime
vtkSubjectHelper * SubjectHelper
- Protected Attributes inherited from vtkObjectBase
int ReferenceCount
vtkWeakPointerBase ** WeakPointers
typedef vtkObject Superclass
virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
static int IsTypeOf (const char *type)
static
vtkGenericSubdivisionErrorMetric
SafeDownCast (vtkObject *o)

Additional Inherited Members

- Public Types inherited from vtkObject
typedef vtkObjectBase Superclass
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
static void BreakOnError ()
static void SetGlobalWarningDisplay (int val)
static void GlobalWarningDisplayOn ()
static void GlobalWarningDisplayOff ()
static int GetGlobalWarningDisplay ()
- Friends inherited from vtkObject

Detailed Description

Objects that compute error during cell tessellation.

Objects of that class answer the following question during the cell subdivision: "does the edge need to be subdivided?" through RequiresEdgeSubdivision(). The answer depends on the criterium actually used in the subclass of this abstract class: a geometric-based error metric (variation of edge from a straight line), an attribute-based error metric (variation of the active attribute/component value from a linear ramp) , a view-depend error metric, ... Cell subdivision is performed in the context of the adaptor framework: higher-order, or complex cells, are automatically tessellated into simplices so that they can be processed with conventional visualization algorithms.

See Also
vtkGenericCellTessellator

Definition at line 46 of file vtkGenericSubdivisionErrorMetric.h.

Member Typedef Documentation

Standard VTK type and error macros.

Definition at line 51 of file vtkGenericSubdivisionErrorMetric.h.

Constructor & Destructor Documentation

vtkGenericSubdivisionErrorMetric::vtkGenericSubdivisionErrorMetric ( )
protected
vtkGenericSubdivisionErrorMetric::~vtkGenericSubdivisionErrorMetric ( )
protected

Member Function Documentation

virtual const char* vtkGenericSubdivisionErrorMetric::GetClassName ( )
virtual

Standard VTK type and error macros.

Reimplemented from vtkObject.

Reimplemented in vtkSmoothErrorMetric, vtkViewDependentErrorMetric, vtkAttributesErrorMetric, and vtkGeometricErrorMetric.

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

Standard VTK type and error macros.

Reimplemented from vtkObject.

Reimplemented in vtkSmoothErrorMetric, vtkViewDependentErrorMetric, vtkAttributesErrorMetric, and vtkGeometricErrorMetric.

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

Standard VTK type and error macros.

Reimplemented from vtkObject.

Reimplemented in vtkSmoothErrorMetric, vtkViewDependentErrorMetric, vtkAttributesErrorMetric, and vtkGeometricErrorMetric.

static vtkGenericSubdivisionErrorMetric* vtkGenericSubdivisionErrorMetric::SafeDownCast ( vtkObject o)
static

Standard VTK type and error macros.

Reimplemented from vtkObject.

Reimplemented in vtkSmoothErrorMetric, vtkViewDependentErrorMetric, vtkAttributesErrorMetric, and vtkGeometricErrorMetric.

void vtkGenericSubdivisionErrorMetric::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
virtual

Standard VTK type and error macros.

Reimplemented from vtkObject.

Reimplemented in vtkSmoothErrorMetric, vtkViewDependentErrorMetric, vtkAttributesErrorMetric, and vtkGeometricErrorMetric.

virtual int vtkGenericSubdivisionErrorMetric::RequiresEdgeSubdivision ( double *  leftPoint,
double *  midPoint,
double *  rightPoint,
double  alpha 
)
pure virtual

Does the edge need to be subdivided according to the implemented computation? 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

Implemented in vtkAttributesErrorMetric, vtkViewDependentErrorMetric, vtkGeometricErrorMetric, and vtkSmoothErrorMetric.

virtual double vtkGenericSubdivisionErrorMetric::GetError ( double *  leftPoint,
double *  midPoint,
double *  rightPoint,
double  alpha 
)
pure 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
Postcondition
positive_result: result>=0

Implemented in vtkAttributesErrorMetric, vtkViewDependentErrorMetric, vtkGeometricErrorMetric, and vtkSmoothErrorMetric.

void vtkGenericSubdivisionErrorMetric::SetGenericCell ( vtkGenericAdaptorCell cell)

The cell that the edge belongs to.

virtual vtkGenericAdaptorCell* vtkGenericSubdivisionErrorMetric::GetGenericCell ( )
virtual

The cell that the edge belongs to.

void vtkGenericSubdivisionErrorMetric::SetDataSet ( vtkGenericDataSet ds)

Set/Get the dataset to be tessellated.

virtual vtkGenericDataSet* vtkGenericSubdivisionErrorMetric::GetDataSet ( )
virtual

Set/Get the dataset to be tessellated.

Member Data Documentation

vtkGenericAdaptorCell* vtkGenericSubdivisionErrorMetric::GenericCell
protected

Definition at line 103 of file vtkGenericSubdivisionErrorMetric.h.

vtkGenericDataSet* vtkGenericSubdivisionErrorMetric::DataSet
protected

Definition at line 104 of file vtkGenericSubdivisionErrorMetric.h.


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