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vtkUnstructuredGridPartialPreIntegration Class Reference

performs piecewise linear ray integration. More...

#include <vtkUnstructuredGridPartialPreIntegration.h>

Inheritance diagram for vtkUnstructuredGridPartialPreIntegration:
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Collaboration diagram for vtkUnstructuredGridPartialPreIntegration:
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Public Types

typedef vtkUnstructuredGridVolumeRayIntegrator Superclass
 
- Public Types inherited from vtkUnstructuredGridVolumeRayIntegrator
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...
 
vtkUnstructuredGridPartialPreIntegrationNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Methods invoked by print to print information about the object including superclasses. More...
 
void Initialize (vtkVolume *volume, vtkDataArray *scalars) override
 Set up the integrator with the given properties and scalars. More...
 
void Integrate (vtkDoubleArray *intersectionLengths, vtkDataArray *nearIntersections, vtkDataArray *farIntersections, float color[4]) override
 Given a set of intersections (defined by the three arrays), compute the piecewise integration of the array in front to back order. More...
 
- Public Member Functions inherited from vtkUnstructuredGridVolumeRayIntegrator
vtkUnstructuredGridVolumeRayIntegratorNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent) override
 Methods invoked by print to print information about the object including superclasses. 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...
 
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)
 
vtkCommandGetCommand (unsigned long tag)
 
void RemoveObserver (vtkCommand *)
 
void RemoveObservers (unsigned long event, vtkCommand *)
 
void RemoveObservers (const char *event, vtkCommand *)
 
vtkTypeBool HasObserver (unsigned long event, vtkCommand *)
 
vtkTypeBool HasObserver (const char *event, vtkCommand *)
 
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)
 
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)
 
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)
 
int InvokeEvent (unsigned long event)
 
int InvokeEvent (const char *event)
 
- 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 PrintHeader (ostream &os, vtkIndent indent)
 
virtual void PrintTrailer (ostream &os, vtkIndent indent)
 
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...
 

Static Public Member Functions

static vtkTypeBool IsTypeOf (const char *type)
 
static vtkUnstructuredGridPartialPreIntegrationSafeDownCast (vtkObjectBase *o)
 
static vtkUnstructuredGridPartialPreIntegrationNew ()
 
static void IntegrateRay (double length, double intensity_front, double attenuation_front, double intensity_back, double attenuation_back, float color[4])
 Integrates a single ray segment. More...
 
static void IntegrateRay (double length, const double color_front[3], double attenuation_front, const double color_back[3], double attenuation_back, float color[4])
 
static float Psi (float taufD, float taubD)
 Looks up Psi (as defined by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data") in a table. More...
 
static float * GetPsiTable (int &size)
 
static void BuildPsiTable ()
 
- Static Public Member Functions inherited from vtkUnstructuredGridVolumeRayIntegrator
static vtkTypeBool IsTypeOf (const char *type)
 
static vtkUnstructuredGridVolumeRayIntegratorSafeDownCast (vtkObjectBase *o)
 
- Static Public Member Functions inherited from vtkObject
static vtkObjectNew ()
 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 ()
 
static void GlobalWarningDisplayOff ()
 
static int GetGlobalWarningDisplay ()
 
- 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 vtkObjectBaseNew ()
 Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...
 

Protected Types

enum  { PSI_TABLE_SIZE = 512 }
 

Protected Member Functions

virtual vtkObjectBaseNewInstanceInternal () const
 
 vtkUnstructuredGridPartialPreIntegration ()
 
 ~vtkUnstructuredGridPartialPreIntegration () override
 
- Protected Member Functions inherited from vtkUnstructuredGridVolumeRayIntegrator
 vtkUnstructuredGridVolumeRayIntegrator ()
 
 ~vtkUnstructuredGridVolumeRayIntegrator () 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 ()
 
- 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

vtkVolumePropertyProperty
 
vtkPartialPreIntegrationTransferFunction * TransferFunctions
 
vtkTimeStamp TransferFunctionsModified
 
int NumIndependentComponents
 
- Protected Attributes inherited from vtkObject
bool Debug
 
vtkTimeStamp MTime
 
vtkSubjectHelper * SubjectHelper
 
- Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t > ReferenceCount
 
vtkWeakPointerBase ** WeakPointers
 

Static Protected Attributes

static float PsiTable [PSI_TABLE_SIZE *PSI_TABLE_SIZE]
 
static int PsiTableBuilt
 

Detailed Description

performs piecewise linear ray integration.

vtkUnstructuredGridPartialPreIntegration performs piecewise linear ray integration. This will give the same results as vtkUnstructuredGridLinearRayIntegration (with potentially a error due to table lookup quantization), but should be notably faster. The algorithm used is given by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data."

This class is thread safe only after the first instance is created.

Definition at line 52 of file vtkUnstructuredGridPartialPreIntegration.h.

Member Typedef Documentation

◆ Superclass

Definition at line 56 of file vtkUnstructuredGridPartialPreIntegration.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum
protected
Enumerator
PSI_TABLE_SIZE 

Definition at line 98 of file vtkUnstructuredGridPartialPreIntegration.h.

Constructor & Destructor Documentation

◆ vtkUnstructuredGridPartialPreIntegration()

vtkUnstructuredGridPartialPreIntegration::vtkUnstructuredGridPartialPreIntegration ( )
protected

◆ ~vtkUnstructuredGridPartialPreIntegration()

vtkUnstructuredGridPartialPreIntegration::~vtkUnstructuredGridPartialPreIntegration ( )
overrideprotected

Member Function Documentation

◆ IsTypeOf()

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

◆ IsA()

virtual vtkTypeBool vtkUnstructuredGridPartialPreIntegration::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 vtkUnstructuredGridVolumeRayIntegrator.

◆ SafeDownCast()

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

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkUnstructuredGridPartialPreIntegration::NewInstanceInternal ( ) const
protectedvirtual

◆ NewInstance()

vtkUnstructuredGridPartialPreIntegration* vtkUnstructuredGridPartialPreIntegration::NewInstance ( ) const

◆ New()

static vtkUnstructuredGridPartialPreIntegration* vtkUnstructuredGridPartialPreIntegration::New ( )
static

◆ PrintSelf()

void vtkUnstructuredGridPartialPreIntegration::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 vtkObject.

◆ Initialize()

void vtkUnstructuredGridPartialPreIntegration::Initialize ( vtkVolume volume,
vtkDataArray scalars 
)
overridevirtual

Set up the integrator with the given properties and scalars.

Implements vtkUnstructuredGridVolumeRayIntegrator.

◆ Integrate()

void vtkUnstructuredGridPartialPreIntegration::Integrate ( vtkDoubleArray intersectionLengths,
vtkDataArray nearIntersections,
vtkDataArray farIntersections,
float  color[4] 
)
overridevirtual

Given a set of intersections (defined by the three arrays), compute the piecewise integration of the array in front to back order.

/c intersectionLengths holds the lengths of each piecewise segment. /c nearIntersections and /c farIntersections hold the scalar values at the front and back of each segment. /c color should contain the RGBA value of the volume in front of the segments passed in, and the result will be placed back into /c color.

Implements vtkUnstructuredGridVolumeRayIntegrator.

◆ IntegrateRay() [1/2]

void vtkUnstructuredGridPartialPreIntegration::IntegrateRay ( double  length,
double  intensity_front,
double  attenuation_front,
double  intensity_back,
double  attenuation_back,
float  color[4] 
)
inlinestatic

Integrates a single ray segment.

color is blended with the result (with color in front). The result is written back into color.

Definition at line 127 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ IntegrateRay() [2/2]

void vtkUnstructuredGridPartialPreIntegration::IntegrateRay ( double  length,
const double  color_front[3],
double  attenuation_front,
const double  color_back[3],
double  attenuation_back,
float  color[4] 
)
inlinestatic

Definition at line 146 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ Psi()

float vtkUnstructuredGridPartialPreIntegration::Psi ( float  taufD,
float  taubD 
)
inlinestatic

Looks up Psi (as defined by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data") in a table.

The table must be created first, which happens on the first instantiation of this class or when BuildPsiTable is first called.

Definition at line 112 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ GetPsiTable()

float * vtkUnstructuredGridPartialPreIntegration::GetPsiTable ( int &  size)
inlinestatic

Definition at line 121 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ BuildPsiTable()

static void vtkUnstructuredGridPartialPreIntegration::BuildPsiTable ( )
static

Member Data Documentation

◆ Property

vtkVolumeProperty* vtkUnstructuredGridPartialPreIntegration::Property
protected

Definition at line 92 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ TransferFunctions

vtkPartialPreIntegrationTransferFunction* vtkUnstructuredGridPartialPreIntegration::TransferFunctions
protected

Definition at line 94 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ TransferFunctionsModified

vtkTimeStamp vtkUnstructuredGridPartialPreIntegration::TransferFunctionsModified
protected

Definition at line 95 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ NumIndependentComponents

int vtkUnstructuredGridPartialPreIntegration::NumIndependentComponents
protected

Definition at line 96 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ PsiTable

float vtkUnstructuredGridPartialPreIntegration::PsiTable[PSI_TABLE_SIZE *PSI_TABLE_SIZE]
staticprotected

Definition at line 103 of file vtkUnstructuredGridPartialPreIntegration.h.

◆ PsiTableBuilt

int vtkUnstructuredGridPartialPreIntegration::PsiTableBuilt
staticprotected

Definition at line 104 of file vtkUnstructuredGridPartialPreIntegration.h.


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