A simple implementation of vtkCellDepthSort. More...

#include <vtkCellCenterDepthSort.h>

Inheritance diagram for vtkCellCenterDepthSort:

Collaboration diagram for vtkCellCenterDepthSort:

Public Types
typedef vtkVisibilitySort	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkCellCenterDepthSort *	NewInstance () const
virtual void	PrintSelf (ostream &os, vtkIndent indent)
virtual void	InitTraversal ()
virtual vtkIdTypeArray *	GetNextCells ()
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkCellCenterDepthSort *	SafeDownCast (vtkObjectBase *o)
static vtkCellCenterDepthSort *	New ()
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
	vtkCellCenterDepthSort ()
virtual	~vtkCellCenterDepthSort ()
virtual float *	ComputeProjectionVector ()
virtual void	ComputeCellCenters ()
virtual void	ComputeDepths ()
Protected Attributes
vtkIdTypeArray *	SortedCells
vtkIdTypeArray *	SortedCellPartition
vtkFloatArray *	CellCenters
vtkFloatArray *	CellDepths
vtkFloatArray *	CellPartitionDepths

Detailed Description

A simple implementation of vtkCellDepthSort.

vtkCellCenterDepthSort is a simple and fast implementation of depth sort, but it only provides approximate results. The sorting algorithm finds the centroids of all the cells. It then performs the dot product of the centroids against a vector pointing in the direction of the camera transformed into object space. It then performs an ordinary sort on the result.

Definition at line 48 of file vtkCellCenterDepthSort.h.

Member Typedef Documentation

typedef vtkVisibilitySort vtkCellCenterDepthSort::Superclass

Reimplemented from vtkVisibilitySort.

Definition at line 51 of file vtkCellCenterDepthSort.h.

Constructor & Destructor Documentation

vtkCellCenterDepthSort::vtkCellCenterDepthSort ( ) [protected]

virtual vtkCellCenterDepthSort::~vtkCellCenterDepthSort ( ) [protected, virtual]

Member Function Documentation

static int vtkCellCenterDepthSort::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 vtkVisibilitySort.

virtual int vtkCellCenterDepthSort::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 vtkVisibilitySort.

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

Reimplemented from vtkVisibilitySort.

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

Reimplemented from vtkVisibilitySort.

vtkCellCenterDepthSort* vtkCellCenterDepthSort::NewInstance ( ) const

Reimplemented from vtkVisibilitySort.

virtual void vtkCellCenterDepthSort::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 vtkVisibilitySort.

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

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

Reimplemented from vtkObject.

virtual void vtkCellCenterDepthSort::InitTraversal ( ) [virtual]

To facilitate incremental sorting algorithms, the cells are retrieved in an iteration process. That is, call InitTraversal to start the iteration and call GetNextCells to get the cell IDs in order. However, for efficiencies sake, GetNextCells returns an ordered list of several id's in once call (but not necessarily all). GetNextCells will return NULL once the entire sorted list is output. The vtkIdTypeArray returned from GetNextCells is a cached array, so do not delete it. At the same note, do not expect the array to be valid after subsequent calls to GetNextCells.

Implements vtkVisibilitySort.

virtual vtkIdTypeArray* vtkCellCenterDepthSort::GetNextCells ( ) [virtual]

To facilitate incremental sorting algorithms, the cells are retrieved in an iteration process. That is, call InitTraversal to start the iteration and call GetNextCells to get the cell IDs in order. However, for efficiencies sake, GetNextCells returns an ordered list of several id's in once call (but not necessarily all). GetNextCells will return NULL once the entire sorted list is output. The vtkIdTypeArray returned from GetNextCells is a cached array, so do not delete it. At the same note, do not expect the array to be valid after subsequent calls to GetNextCells.

Implements vtkVisibilitySort.

virtual float* vtkCellCenterDepthSort::ComputeProjectionVector ( ) [protected, virtual]