vtkUnstructuredGridLinearRayIntegrator Class Reference

#include <vtkUnstructuredGridLinearRayIntegrator.h>

Inheritance diagram for vtkUnstructuredGridLinearRayIntegrator:

[legend]Collaboration diagram for vtkUnstructuredGridLinearRayIntegrator:

[legend]List of all members.

Detailed Description

performs piecewise linear ray integration.

vtkUnstructuredGridLinearRayIntegrator performs piecewise linear ray integration. Considering that transfer functions in VTK are piecewise linear, this class should give the "correct" integration under most circumstances. However, the computations performed are fairly hefty and should, for the most part, only be used as a benchmark for other, faster methods.

See also:: vtkUnstructuredGridPartialPreIntegration

Created by:

Moreland, Kenneth

CVS contributions (if > 5%):

Moreland, Kenneth (97%)

CVS logs (CVSweb):

.h (/Rendering/vtkUnstructuredGridLinearRayIntegrator.h)
.cxx (/Rendering/vtkUnstructuredGridLinearRayIntegrator.cxx)

Tests:: vtkUnstructuredGridLinearRayIntegrator (Tests)

Definition at line 62 of file vtkUnstructuredGridLinearRayIntegrator.h.

Public Types

typedef vtkUnstructuredGridVolumeRayIntegrator Superclass

Public Member Functions

virtual const char * GetClassName ()

virtual int IsA (const char *type)

virtual void PrintSelf (ostream &os, vtkIndent indent)

virtual void Initialize (vtkVolumeProperty *property, vtkDataArray *scalars)

virtual void Integrate (vtkDoubleArray *intersectionLengths, vtkDataArray *nearIntersections, vtkDataArray *farIntersections, float color[4])

Static Public Member Functions

int IsTypeOf (const char *type)

vtkUnstructuredGridLinearRayIntegrator * SafeDownCast (vtkObject *o)

vtkUnstructuredGridLinearRayIntegrator * New ()

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

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

float Psi (float length, float attenuation_front, float attenuation_back)

Protected Member Functions

vtkUnstructuredGridLinearRayIntegrator ()

~vtkUnstructuredGridLinearRayIntegrator ()

Protected Attributes

vtkVolumeProperty * Property

vtkLinearRayIntegratorTransferFunction * TransferFunctions

vtkTimeStamp TransferFunctionsModified

int NumIndependentComponents

Member Typedef Documentation

typedef vtkUnstructuredGridVolumeRayIntegrator vtkUnstructuredGridLinearRayIntegrator::Superclass

Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.
Definition at line 66 of file vtkUnstructuredGridLinearRayIntegrator.h.

Constructor & Destructor Documentation

vtkUnstructuredGridLinearRayIntegrator::vtkUnstructuredGridLinearRayIntegrator ( ) [protected]

vtkUnstructuredGridLinearRayIntegrator::~vtkUnstructuredGridLinearRayIntegrator ( ) [protected]

Member Function Documentation

virtual const char* vtkUnstructuredGridLinearRayIntegrator::GetClassName ( ) [virtual]

Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.

int vtkUnstructuredGridLinearRayIntegrator::IsTypeOf ( const char * type ) [static]

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.

virtual int vtkUnstructuredGridLinearRayIntegrator::IsA ( const char * type ) [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 vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.

vtkUnstructuredGridLinearRayIntegrator* vtkUnstructuredGridLinearRayIntegrator::SafeDownCast ( vtkObject * o ) [static]

Reimplemented from vtkUnstructuredGridVolumeRayIntegrator.

vtkUnstructuredGridLinearRayIntegrator* vtkUnstructuredGridLinearRayIntegrator::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkObject.

virtual void vtkUnstructuredGridLinearRayIntegrator::PrintSelf ( ostream & os,

vtkIndent indent

) [virtual]

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 vtkUnstructuredGridVolumeRayIntegrator.

virtual void vtkUnstructuredGridLinearRayIntegrator::Initialize ( vtkVolumeProperty * property,

vtkDataArray * scalars

) [virtual]

Set up the integrator with the given properties and scalars.
Implements vtkUnstructuredGridVolumeRayIntegrator.

virtual void vtkUnstructuredGridLinearRayIntegrator::Integrate ( vtkDoubleArray * intersectionLengths,

vtkDataArray * nearIntersections,

vtkDataArray * farIntersections,

float color[4]

) [virtual]

Given a set of intersections (defined by the three arrays), compute the peicewise integration of the array in front to back order. /c intersectionLengths holds the lengths of each peicewise 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.

void vtkUnstructuredGridLinearRayIntegrator::IntegrateRay ( double length,

double intensity_front,

double attenuation_front,

double intensity_back,

double attenuation_back,

float color[4]

) [static]

Integrates a single ray segment. color is blended with the result (with color in front). The result is written back into color.

void vtkUnstructuredGridLinearRayIntegrator::IntegrateRay ( double length,

const double color_front[3],

double attenuation_front,

const double color_back[3],

double attenuation_back,

float color[4]

) [static]

Integrates a single ray segment. color is blended with the result (with color in front). The result is written back into color.

float vtkUnstructuredGridLinearRayIntegrator::Psi ( float length,

float attenuation_front,

float attenuation_back

) [static]

Computes Psi (as defined by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data").

Member Data Documentation

vtkVolumeProperty* vtkUnstructuredGridLinearRayIntegrator::Property [protected]

Definition at line 103 of file vtkUnstructuredGridLinearRayIntegrator.h.

vtkLinearRayIntegratorTransferFunction* vtkUnstructuredGridLinearRayIntegrator::TransferFunctions [protected]

Definition at line 105 of file vtkUnstructuredGridLinearRayIntegrator.h.

vtkTimeStamp vtkUnstructuredGridLinearRayIntegrator::TransferFunctionsModified [protected]

Definition at line 106 of file vtkUnstructuredGridLinearRayIntegrator.h.

int vtkUnstructuredGridLinearRayIntegrator::NumIndependentComponents [protected]

Definition at line 107 of file vtkUnstructuredGridLinearRayIntegrator.h.

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

dox/Rendering/vtkUnstructuredGridLinearRayIntegrator.h


Public Types
typedef vtkUnstructuredGridVolumeRayIntegrator	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
virtual void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	Initialize (vtkVolumeProperty property, vtkDataArray scalars)
virtual void	Integrate (vtkDoubleArray intersectionLengths, vtkDataArray nearIntersections, vtkDataArray *farIntersections, float color[4])
Static Public Member Functions
int	IsTypeOf (const char *type)
vtkUnstructuredGridLinearRayIntegrator *	SafeDownCast (vtkObject *o)
vtkUnstructuredGridLinearRayIntegrator *	New ()

void	IntegrateRay (double length, double intensity_front, double attenuation_front, double intensity_back, double attenuation_back, float color[4])
void	IntegrateRay (double length, const double color_front[3], double attenuation_front, const double color_back[3], double attenuation_back, float color[4])

float	Psi (float length, float attenuation_front, float attenuation_back)
Protected Member Functions
	vtkUnstructuredGridLinearRayIntegrator ()
	~vtkUnstructuredGridLinearRayIntegrator ()
Protected Attributes
vtkVolumeProperty *	Property
vtkLinearRayIntegratorTransferFunction *	TransferFunctions
vtkTimeStamp	TransferFunctionsModified
int	NumIndependentComponents