Home	Download	Screen shots	Discussion	Documentation

openvrml::vrml97_node::abstract_base Class Reference

Abstract base class for VRML97 node implementations. More...

Inheritance diagram for openvrml::vrml97_node::abstract_base:

[legend]Collaboration diagram for openvrml::vrml97_node::abstract_base:

[legend]List of all members.

Public Member Functions
virtual	~abstract_base ()=0 throw ()
	Destroy.
Protected Member Functions
	abstract_base (const node_type &type, const scope_ptr &scope)
	Construct.
Private Member Functions
virtual void	do_field (const std::string &id, const field_value &value) throw (unsupported_interface, std::bad_cast, std::bad_alloc)
	Set a field value for a node.
virtual const field_value &	do_field (const std::string &id) const throw (unsupported_interface)
	Get a field value for a node.
virtual void	do_process_event (const std::string &id, const field_value &value, double timestamp) throw (unsupported_interface, std::bad_cast, std::bad_alloc)
	Process an event.
virtual const field_value &	do_eventout (const std::string &id) const throw (unsupported_interface)
	Get an eventOut value for a node.

---

Detailed Description

Abstract base class for VRML97 node implementations.

abstract_base encapsulates the mechanisms for field access and mutation, event dispatch, and eventOut access.

---

Constructor & Destructor Documentation

openvrml::vrml97_node::abstract_base::abstract_base (  const node_type &  type, const scope_ptr &  scope )  [protected]

Construct. Parameters: type  the node_type associated with this node. scope  the scope to which the node belongs.

---

Member Function Documentation

const field_value & openvrml::vrml97_node::abstract_base::do_eventout (  const std::string &  id  )  const throw (unsupported_interface) [private, virtual]

Get an eventOut value for a node. Parameters: id  an eventOut name. Exceptions: unsupported_interface  if the node has no eventOut id. Implements openvrml::node.

const field_value & openvrml::vrml97_node::abstract_base::do_field (  const std::string &  id  )  const throw (unsupported_interface) [private, virtual]

Get a field value for a node. Parameters: id  a field name. Exceptions: unsupported_interface  if the node has no field id. Implements openvrml::node.

void openvrml::vrml97_node::abstract_base::do_field (  const std::string &  id, const field_value &  value )  throw (unsupported_interface, std::bad_cast, std::bad_alloc) [private, virtual]

Set a field value for a node. Parameters: id  a field name. value  a field_value. Exceptions: unsupported_interface  if the node has no field id. std::bad_cast  if value is not the correct type. std::bad_alloc  if memory allocation fails. Precondition: value must be of the correct type. Implements openvrml::node.

void openvrml::vrml97_node::abstract_base::do_process_event (  const std::string &  id, const field_value &  value, double  timestamp )  throw (unsupported_interface, std::bad_cast, std::bad_alloc) [private, virtual]

Process an event. Parameters: id  an eventIn name. value  a field_value. timestamp  the current time. Exceptions: unsupported_interface  if the node has no eventIn id. std::bad_cast  if value is not the correct type. std::bad_alloc  if memory allocation fails. Precondition: value must be of the correct type. Implements openvrml::node.