vtkGeoSource Class Reference

#include <vtkGeoSource.h>

Inheritance diagram for vtkGeoSource:

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Collaboration diagram for vtkGeoSource:

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List of all members.

Detailed Description

A multi-resolution geographic data source.

vtkGeoSource is an abstract superclass for all multi-resolution data sources shown in a geographic view like vtkGeoView or vtkGeoView2D. vtkGeoSource subclasses need to implement the FetchRoot() method, which fills a vtkGeoTreeNode with the low-res data at the root, and FetchChild(), which produces a refinement of a parent node. Other geovis classes such as vtkGeoTerrain, vtkGeoTerrain2D, and vtkGeoAlignedImageSource use a vtkGeoSource subclass to build their geometry or image caches which are stored in trees. The source itself does not maintain the tree, but simply provides a mechanism for generating refined tree nodes.

Sources are multi-threaded. Each source may have one or more worker threads associated with it, which this superclass manages. It is essential that the FetchChild() method is thread-safe, since it may be called from multiple workers simultaneously.

Tests:: vtkGeoSource (Tests)

Definition at line 55 of file vtkGeoSource.h.


Public Types
typedef vtkObject	Superclass
Public Member Functions
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
	vtkGeoSource ()
	~vtkGeoSource ()
void	Initialize (int numThreads=1)
void	ShutDown ()
void	WorkerThread ()
virtual vtkAbstractTransform *	GetTransform ()

virtual bool	FetchRoot (vtkGeoTreeNode *root)=0
virtual bool	FetchChild (vtkGeoTreeNode node, int index, vtkGeoTreeNode child)=0

virtual void	RequestChildren (vtkGeoTreeNode *node)
virtual vtkCollection *	GetRequestedNodes (vtkGeoTreeNode *node)
Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkGeoSource *	SafeDownCast (vtkObject *o)
Protected Attributes
vtkCollection *	InputSet
vtkCollection *	ProcessingSet
vtkMutexLock *	Lock
vtkConditionVariable *	Condition
vtkMultiThreader *	Threader
bool	StopThread
bool	Initialized
implementation *	Implementation

vtkMutexLock *	InputSetLock
vtkMutexLock *	ProcessingSetLock
vtkMutexLock *	OutputSetLock

Member Typedef Documentation

typedef vtkObject vtkGeoSource::Superclass

Reimplemented from vtkObject.

Reimplemented in vtkGeoAlignedImageSource, vtkGeoFileImageSource, vtkGeoFileTerrainSource, vtkGeoGlobeSource, and vtkGeoProjectionSource.

Definition at line 58 of file vtkGeoSource.h.

Constructor & Destructor Documentation

vtkGeoSource::vtkGeoSource ( )

vtkGeoSource::~vtkGeoSource ( )

Member Function Documentation

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

Reimplemented from vtkObject.

Reimplemented in vtkGeoAlignedImageSource, vtkGeoFileImageSource, vtkGeoFileTerrainSource, vtkGeoGlobeSource, and vtkGeoProjectionSource.

static int vtkGeoSource::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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkGeoAlignedImageSource, vtkGeoFileImageSource, vtkGeoFileTerrainSource, vtkGeoGlobeSource, and vtkGeoProjectionSource.

virtual int vtkGeoSource::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 vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkGeoAlignedImageSource, vtkGeoFileImageSource, vtkGeoFileTerrainSource, vtkGeoGlobeSource, and vtkGeoProjectionSource.

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