cull props based on frustum coverage More...

#include <vtkFrustumCoverageCuller.h>

Inheritance diagram for vtkFrustumCoverageCuller:

Collaboration diagram for vtkFrustumCoverageCuller:

Public Types
typedef vtkCuller	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkFrustumCoverageCuller *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)

virtual void	SetMinimumCoverage (double)
virtual double	GetMinimumCoverage ()

virtual void	SetMaximumCoverage (double)
virtual double	GetMaximumCoverage ()

virtual void	SetSortingStyle (int)
virtual int	GetSortingStyle ()
void	SetSortingStyleToNone ()
void	SetSortingStyleToBackToFront ()
void	SetSortingStyleToFrontToBack ()
const char *	GetSortingStyleAsString (void)

double	Cull (vtkRenderer ren, vtkProp *propList, int &listLength, int &initialized)
Static Public Member Functions
static vtkFrustumCoverageCuller *	New ()
static int	IsTypeOf (const char *type)
static vtkFrustumCoverageCuller *	SafeDownCast (vtkObjectBase *o)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkFrustumCoverageCuller ()
	~vtkFrustumCoverageCuller ()
Protected Attributes
double	MinimumCoverage
double	MaximumCoverage
int	SortingStyle

Detailed Description

cull props based on frustum coverage

vtkFrustumCoverageCuller will cull props based on the coverage in the view frustum. The coverage is computed by enclosing the prop in a bounding sphere, projecting that to the viewing coordinate system, then taking a slice through the view frustum at the center of the sphere. This results in a circle on the plane slice through the view frustum. This circle is enclosed in a squared, and the fraction of the plane slice that this square covers is the coverage. This is a number between 0 and 1. If the number is less than the MinumumCoverage, the allocated render time for that prop is set to zero. If it is greater than the MaximumCoverage, the allocated render time is set to 1.0. In between, a linear ramp is used to convert coverage into allocated render time.

See also:: vtkCuller

Tests:: vtkFrustumCoverageCuller (Tests)

Definition at line 50 of file vtkFrustumCoverageCuller.h.

Member Typedef Documentation

typedef vtkCuller vtkFrustumCoverageCuller::Superclass

Reimplemented from vtkCuller.

Definition at line 54 of file vtkFrustumCoverageCuller.h.

Constructor & Destructor Documentation

vtkFrustumCoverageCuller::vtkFrustumCoverageCuller ( ) [protected]

vtkFrustumCoverageCuller::~vtkFrustumCoverageCuller ( ) [inline, protected]

Definition at line 99 of file vtkFrustumCoverageCuller.h.

Member Function Documentation

static vtkFrustumCoverageCuller* vtkFrustumCoverageCuller::New ( ) [static]

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

Reimplemented from vtkObject.

static int vtkFrustumCoverageCuller::IsTypeOf ( const char * name ) [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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkCuller.

virtual int vtkFrustumCoverageCuller::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 vtkCuller.

static vtkFrustumCoverageCuller* vtkFrustumCoverageCuller::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkCuller.

virtual vtkObjectBase* vtkFrustumCoverageCuller::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkCuller.

vtkFrustumCoverageCuller* vtkFrustumCoverageCuller::NewInstance ( ) const

Reimplemented from vtkCuller.

void vtkFrustumCoverageCuller::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 vtkCuller.

virtual void vtkFrustumCoverageCuller::SetMinimumCoverage ( double ) [virtual]

Set/Get the minimum coverage - props with less coverage than this are given no time to render (they are culled)

virtual double vtkFrustumCoverageCuller::GetMinimumCoverage ( ) [virtual]

Set/Get the minimum coverage - props with less coverage than this are given no time to render (they are culled)

virtual void vtkFrustumCoverageCuller::SetMaximumCoverage ( double ) [virtual]

Set/Get the maximum coverage - props with more coverage than this are given an allocated render time of 1.0 (the maximum)

virtual double vtkFrustumCoverageCuller::GetMaximumCoverage ( ) [virtual]

Set/Get the maximum coverage - props with more coverage than this are given an allocated render time of 1.0 (the maximum)

virtual void vtkFrustumCoverageCuller::SetSortingStyle ( int ) [virtual]