class SG_EXPORT osg::Object

Base class/standard interface for objects which require IO support, cloning and reference counting.

Inheritance:

Public Methods

Object()

Construct an object.

virtual Object* clone() const = 0

return a shallow copy of a node, with Object* return type.

virtual bool isSameKindAs(const Object*) const

virtual const char* className() const = 0

return the name of the object's class type.

Protected Methods

virtual ~Object()

Object destructor.

Inherited from Referenced:

Public Methods

inline Referenced& operator = (Referenced&)

inline void ref() const

inline void unref() const

inline const int referenceCount() const

Protected Fields

mutable int _refCount

Documentation

Base class/standard interface for objects which require IO support, cloning and reference counting. Based on GOF Composite, Prototype and Template Method patterns.

Object()

Construct an object. Note Object is a pure virtual base class and therefore cannot be constructed on its own, only derived classes which overide the clone and className methods are concrete classes and can be constructed.

virtual Object* clone() const = 0

return a shallow copy of a node, with Object* return type. Must be defined by derived classes.

virtual bool isSameKindAs(const Object*) const

virtual const char* className() const = 0

return the name of the object's class type. Must be defined by derived classes.

virtual ~Object()

Object destructor. Note, is protected so that Objects cannot be deleted other than by being derefernced and the reference count being zero (see osg::Referenced), preventing the deletion of nodes which are still in use. This also means that Node's cannot be created on stack i.e Node node will not compile, forcing all nodes to be created on the heap i.e Node* node = new Node().

Direct child classes:

StateSet
StateAttribute
Node
Matrix
Image
Drawable

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