| | |
- object
-
- Node
-
- NullNode
- PrototypedNode
- _MFNode
-
- MFNode(_MFNode, Field)
- MFNodeEvt(_MFNode, Event)
- _SFNode
-
- SFNode(_SFNode, Field)
- SFNodeEvt(_SFNode, Event)
- WeakSFNode(_SFNode, WeakField, Field)
-
- RootScenegraphNode
class MFNode(_MFNode, Field) |
| |
MFNode Field class
|
| |
- Method resolution order:
- MFNode
- _MFNode
- Field
- property
- object
Methods inherited from _MFNode:
- coerce(self, value)
- Coerce value to an MFNode list-of-objects
- copyValue(self, value, copier=None)
- Copy a value for copier
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The MFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _MFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- baseSFNode
- exposedField SFNode GeneralSFNode <bound method SFNode
Data and other attributes inherited from _MFNode:
- baseObjectType = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- defaultDefault = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- nodes = 1
Methods inherited from Field:
- __init__(self, name, exposure=1, default=[])
- Initialise the field object
name -- string name
exposure -- boolean (0/1) indicating whether this is an exposed field
default -- default value for the field
- __str__(self)
- Get a human-friendly representation of the field
- check(self, value)
- Raise ValueError if isn't correct type
- copy(self, client=None, copier=None)
- Copy this property's value/definition for client node/proto
if client is a prototype, copy this field definition
for use in a new prototype.
if client is a node, and it has a set value for this
field, then returns copyValue( currentValue )
otherwise returns _NULL, a singleton object which
shouldn't turn up anywhere else.
- fdel(self, client, notify=1)
- Delete the client's value for this property
if notify is true send a notification event.
- fget = simpleGet(...)
- simpleGet( property, client )
C accellerator for vrml.field.fget
property -- vrml.field.Field object, must have
'name' attribute and getDefault method
client -- must have '__dict__'
- fhas(self, client)
- Determine whether the client currently has a non-default value
- fieldVrmlstr(self, lineariser)
- Write the field's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this field available.
- getDefault(self, client=None)
- Get the default value of this field
if client, set client's attribute to default
without sending a notification event.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
Methods inherited from property:
- __delete__(...)
- descr.__delete__(obj)
- __get__(...)
- descr.__get__(obj[, type]) -> value
- __getattribute__(...)
- x.__getattribute__('name') <==> x.name
- __set__(...)
- descr.__set__(obj, value)
- deleter(...)
- Descriptor to change the deleter on a property.
- getter(...)
- Descriptor to change the getter on a property.
- setter(...)
- Descriptor to change the setter on a property.
Data and other attributes inherited from property:
- __new__ = <built-in method __new__ of type object at 0x865ba0>
- T.__new__(S, ...) -> a new object with type S, a subtype of T
|
class MFNodeEvt(_MFNode, Event) |
| |
MFNode Event class
|
| |
- Method resolution order:
- MFNodeEvt
- _MFNode
- Event
- object
Data and other attributes defined here:
- fieldType = 'MFNode'
Methods inherited from _MFNode:
- coerce(self, value)
- Coerce value to an MFNode list-of-objects
- copyValue(self, value, copier=None)
- Copy a value for copier
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The MFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _MFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- baseSFNode
- exposedField SFNode GeneralSFNode <bound method SFNode
Data and other attributes inherited from _MFNode:
- baseObjectType = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- defaultDefault = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- nodes = 1
Methods inherited from Event:
- __get__(self, client=None, cls=None)
- Get an event's last value
- __init__(self, name, direction=1)
- Initialise the field object
name -- string name
direction -- 0 == in, 1 == out
- __set__(self, client, value, notify=1)
- Set an event value
- __str__(self)
- Get a human-friendly representation of the event
- clone(self, name=None, direction=None)
- Clone this property
- eventVrmlstr(self, lineariser)
- Write the event's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this event available.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
|
class Node(object) |
| |
A generic scene graph node
Unlike earlier versions of the library,
this implementation of the Node class is
basically a regular python class. This is
possible because it uses the python 2.2.x
property/descriptor API extensively.
Technically this is a multiple-hierarchy DAG
node, as there can be any number of node
children attributes, and nodes may appear
multiple times in the hierarchy.
Attributes of note:
" DEF" field
a simple string field which stores the
DEF name of a node instance
" scenegraph" attribute
pointer to the node's implementation
scenegraph (at the moment, this is not
actually used for anything)
" PROTO" attribute
stores the PROTO name of the node
externalURL attribute
stores the MFString url for the node's
externproto definition if appropriate
toString method
convenience access to the lineariser
to give VRML97-formatted representation of
the node
|
| |
Methods defined here:
- __init__(self, **namedarguments)
- Initialise the node with appropriate named args
All properties/attributes must be specified with
named arguments, and the property/attribute must
exist within the Node's class/prototype.
This will raise AttributeError/ValueError/TypeError
if the values or the property names are inappropriate.
Note that all Node objects have the attribute/property
exposedField SFString DEF ""
defined. You may therefore specify a DEF name by
passing it as a named argument.
- __repr__(self)
- Get a code-like representation of the Node
Basically every attribute except for sub-nodes values
are returned as a full representation.
- __str__(self)
- Get a friendly representation of the Node
- copy(self, copier=None)
- Copy this node for copier
- toString(self, **namedargs)
- Generate a VRML 97-syntax string representing this Prototype
**namedargs -- key:value
passed arguments for the linearisation object
see lineariser4.Lineariser
Data descriptors defined here:
- DEF
- exposedField SFString DEF
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- externalURL
- exposedField MFString externalURL <type 'list'>
- rootSceneGraph
- exposedField RootScenegraphNode root NULL
Data and other attributes defined here:
- PROTO = ''
|
class NullNode(Node) |
| |
NULL SFNode value
There should only be a single NULL instance for
any particular system. It should, for all intents and
purposes just sit there inertly
|
| |
- Method resolution order:
- NullNode
- Node
- object
Methods defined here:
- __eq__(self, other)
- Compare the NULL node to other objects
- __nonzero__(self)
- Make the NULL node evaluate to false
- __repr__ = __str__(self)
- __str__(self)
- Get a human-friendly representation of the NULL node
- clone(self)
- Replicate the null object (return another pointer to it)
Data and other attributes defined here:
- PROTO = 'NULL'
Methods inherited from Node:
- __init__(self, **namedarguments)
- Initialise the node with appropriate named args
All properties/attributes must be specified with
named arguments, and the property/attribute must
exist within the Node's class/prototype.
This will raise AttributeError/ValueError/TypeError
if the values or the property names are inappropriate.
Note that all Node objects have the attribute/property
exposedField SFString DEF ""
defined. You may therefore specify a DEF name by
passing it as a named argument.
- copy(self, copier=None)
- Copy this node for copier
- toString(self, **namedargs)
- Generate a VRML 97-syntax string representing this Prototype
**namedargs -- key:value
passed arguments for the linearisation object
see lineariser4.Lineariser
Data descriptors inherited from Node:
- DEF
- exposedField SFString DEF
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- externalURL
- exposedField MFString externalURL <type 'list'>
- rootSceneGraph
- exposedField RootScenegraphNode root NULL
|
class PrototypedNode(object) |
| |
Prototyped node mix-in
Note the presence of a " scenegraph" property
for the node created below (due to mutual dependencies).
This is filled by the instantiate method to provide the
actual implementation of the node.
|
| |
Methods defined here:
- __init__(self, *arguments, **namedarguments)
- Initialise the node with appropriate named args
Also attempts to instantiate the sub-node scenegraph
for the PrototypedNode
- instantiate(self)
- Make a copy of the class scenegraph-template for this node
Also needs to bind IS mappings/routes for the template,
and negotiate not-yet-loaded external prototypes and
the like.
- renderedChildren(self, types=None)
- Get the rendered children of the scenegraph
Data descriptors defined here:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- scenegraph
- exposedField SFNode scenegraph NULL
|
class RootScenegraphNode(WeakSFNode) |
| | |
- Method resolution order:
- RootScenegraphNode
- WeakSFNode
- _SFNode
- WeakField
- Field
- property
- object
Methods defined here:
- fset(self, client, value, notify=1)
- Set the root scenegraph node (recursively)
TODO: this will blow up on cyclic graphs!
Data and other attributes defined here:
- fieldType = 'RootScenegraphNode'
Methods inherited from _SFNode:
- coerce(self, value)
- Coerce value to an SFNode reference
- defaultDefault(self)
- Default SFNode value
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _SFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
Data and other attributes inherited from _SFNode:
- allowNULL = 1
- name = 'SFNode'
- nodes = 1
- requiredTypes = ()
Methods inherited from WeakField:
- fget(self, client)
- Get the client's value for this property
if notify is true send a notification event.
Methods inherited from Field:
- __init__(self, name, exposure=1, default=[])
- Initialise the field object
name -- string name
exposure -- boolean (0/1) indicating whether this is an exposed field
default -- default value for the field
- __str__(self)
- Get a human-friendly representation of the field
- check(self, value)
- Raise ValueError if isn't correct type
- copy(self, client=None, copier=None)
- Copy this property's value/definition for client node/proto
if client is a prototype, copy this field definition
for use in a new prototype.
if client is a node, and it has a set value for this
field, then returns copyValue( currentValue )
otherwise returns _NULL, a singleton object which
shouldn't turn up anywhere else.
- copyValue(self, value, copier=None)
- Copy a value for copier
- fdel(self, client, notify=1)
- Delete the client's value for this property
if notify is true send a notification event.
- fhas(self, client)
- Determine whether the client currently has a non-default value
- fieldVrmlstr(self, lineariser)
- Write the field's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this field available.
- getDefault(self, client=None)
- Get the default value of this field
if client, set client's attribute to default
without sending a notification event.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
Methods inherited from property:
- __delete__(...)
- descr.__delete__(obj)
- __get__(...)
- descr.__get__(obj[, type]) -> value
- __getattribute__(...)
- x.__getattribute__('name') <==> x.name
- __set__(...)
- descr.__set__(obj, value)
- deleter(...)
- Descriptor to change the deleter on a property.
- getter(...)
- Descriptor to change the getter on a property.
- setter(...)
- Descriptor to change the setter on a property.
Data and other attributes inherited from property:
- __new__ = <built-in method __new__ of type object at 0x865ba0>
- T.__new__(S, ...) -> a new object with type S, a subtype of T
|
class SFNode(_SFNode, Field) |
| |
(Restricted) SFNode type
This is the publically available SFNode type,
a sub-class of _SFNode and field.Field
|
| |
- Method resolution order:
- SFNode
- _SFNode
- Field
- property
- object
Data and other attributes defined here:
- requiredTypes = (<class 'vrml.node.Node'>,)
Methods inherited from _SFNode:
- coerce(self, value)
- Coerce value to an SFNode reference
- defaultDefault(self)
- Default SFNode value
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The SFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _SFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
Data and other attributes inherited from _SFNode:
- allowNULL = 1
- name = 'SFNode'
- nodes = 1
Methods inherited from Field:
- __init__(self, name, exposure=1, default=[])
- Initialise the field object
name -- string name
exposure -- boolean (0/1) indicating whether this is an exposed field
default -- default value for the field
- __str__(self)
- Get a human-friendly representation of the field
- check(self, value)
- Raise ValueError if isn't correct type
- copy(self, client=None, copier=None)
- Copy this property's value/definition for client node/proto
if client is a prototype, copy this field definition
for use in a new prototype.
if client is a node, and it has a set value for this
field, then returns copyValue( currentValue )
otherwise returns _NULL, a singleton object which
shouldn't turn up anywhere else.
- copyValue(self, value, copier=None)
- Copy a value for copier
- fdel(self, client, notify=1)
- Delete the client's value for this property
if notify is true send a notification event.
- fget = simpleGet(...)
- simpleGet( property, client )
C accellerator for vrml.field.fget
property -- vrml.field.Field object, must have
'name' attribute and getDefault method
client -- must have '__dict__'
- fhas(self, client)
- Determine whether the client currently has a non-default value
- fieldVrmlstr(self, lineariser)
- Write the field's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this field available.
- getDefault(self, client=None)
- Get the default value of this field
if client, set client's attribute to default
without sending a notification event.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
Methods inherited from property:
- __delete__(...)
- descr.__delete__(obj)
- __get__(...)
- descr.__get__(obj[, type]) -> value
- __getattribute__(...)
- x.__getattribute__('name') <==> x.name
- __set__(...)
- descr.__set__(obj, value)
- deleter(...)
- Descriptor to change the deleter on a property.
- getter(...)
- Descriptor to change the getter on a property.
- setter(...)
- Descriptor to change the setter on a property.
Data and other attributes inherited from property:
- __new__ = <built-in method __new__ of type object at 0x865ba0>
- T.__new__(S, ...) -> a new object with type S, a subtype of T
|
class SFNodeEvt(_SFNode, Event) |
| | |
- Method resolution order:
- SFNodeEvt
- _SFNode
- Event
- object
Data and other attributes defined here:
- fieldType = 'SFNode'
Methods inherited from _SFNode:
- coerce(self, value)
- Coerce value to an SFNode reference
- defaultDefault(self)
- Default SFNode value
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The SFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _SFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
Data and other attributes inherited from _SFNode:
- allowNULL = 1
- name = 'SFNode'
- nodes = 1
- requiredTypes = ()
Methods inherited from Event:
- __get__(self, client=None, cls=None)
- Get an event's last value
- __init__(self, name, direction=1)
- Initialise the field object
name -- string name
direction -- 0 == in, 1 == out
- __set__(self, client, value, notify=1)
- Set an event value
- __str__(self)
- Get a human-friendly representation of the event
- clone(self, name=None, direction=None)
- Clone this property
- eventVrmlstr(self, lineariser)
- Write the event's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this event available.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
|
class WeakSFNode(_SFNode, WeakField, Field) |
| |
Weak-referenced SFNode field-type
|
| |
- Method resolution order:
- WeakSFNode
- _SFNode
- WeakField
- Field
- property
- object
Data and other attributes defined here:
- fieldType = 'WeakSFNode'
Methods inherited from _SFNode:
- coerce(self, value)
- Coerce value to an SFNode reference
- defaultDefault(self)
- Default SFNode value
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The SFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors inherited from _SFNode:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
Data and other attributes inherited from _SFNode:
- allowNULL = 1
- name = 'SFNode'
- nodes = 1
- requiredTypes = ()
Methods inherited from WeakField:
- fget(self, client)
- Get the client's value for this property
if notify is true send a notification event.
Methods inherited from Field:
- __init__(self, name, exposure=1, default=[])
- Initialise the field object
name -- string name
exposure -- boolean (0/1) indicating whether this is an exposed field
default -- default value for the field
- __str__(self)
- Get a human-friendly representation of the field
- check(self, value)
- Raise ValueError if isn't correct type
- copy(self, client=None, copier=None)
- Copy this property's value/definition for client node/proto
if client is a prototype, copy this field definition
for use in a new prototype.
if client is a node, and it has a set value for this
field, then returns copyValue( currentValue )
otherwise returns _NULL, a singleton object which
shouldn't turn up anywhere else.
- copyValue(self, value, copier=None)
- Copy a value for copier
- fdel(self, client, notify=1)
- Delete the client's value for this property
if notify is true send a notification event.
- fhas(self, client)
- Determine whether the client currently has a non-default value
- fieldVrmlstr(self, lineariser)
- Write the field's definition to the lineariser
Basically this gives you a VRML97 fragment
which can be used for creating a PROTO which
will have the equivalent of this field available.
- getDefault(self, client=None)
- Get the default value of this field
if client, set client's attribute to default
without sending a notification event.
- typeName(self)
- Get the typeName of this field
- watch(self, node, receiver, signal=_Any)
- Make receiver receive all update events for this field+node
receiver( signal, sender, value=None )
signal -- ('del',self), ('set',self) etc...
sender -- node
value -- new value set (for set values)
Methods inherited from property:
- __delete__(...)
- descr.__delete__(obj)
- __get__(...)
- descr.__get__(obj[, type]) -> value
- __getattribute__(...)
- x.__getattribute__('name') <==> x.name
- __set__(...)
- descr.__set__(obj, value)
- deleter(...)
- Descriptor to change the deleter on a property.
- getter(...)
- Descriptor to change the getter on a property.
- setter(...)
- Descriptor to change the setter on a property.
Data and other attributes inherited from property:
- __new__ = <built-in method __new__ of type object at 0x865ba0>
- T.__new__(S, ...) -> a new object with type S, a subtype of T
|
class _MFNode(object) |
| |
(Restricted) MFNode field-type-definition
|
| |
Methods defined here:
- coerce(self, value)
- Coerce value to an MFNode list-of-objects
- copyValue(self, value, copier=None)
- Copy a value for copier
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The MFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors defined here:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
- baseSFNode
- exposedField SFNode GeneralSFNode <bound method SFNode
Data and other attributes defined here:
- baseObjectType = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- defaultDefault = <class 'vrml.olist.OList'>
- List sub-class which generates pydispatch events on changes
Generates 4 types of events:
* NEW_CHILD_EVT, from self, with value=child, for each added child
* NEW_PARENT_EVT, from child, with parent=self, for each added child
* DEL_CHILD_EVT, from self, with value=child, for each removed child
* DEL_PARENT_EVT, from child, with parent=self, for each removed child
Note that the OList semantics are a little loose currently, as
it sometimes acts as though adding a new duplicate child is not
an event and sometimes acts as though it is. This doesn't cause
problems for the OpenGLContext scenegraph.
The OList is intended for situations where slow-write-fast-read
is the primary requirement, it allows you to hook writing events
in order to recalculate/cache values.
- nodes = 1
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class _SFNode(object) |
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Base-class for SFNode-type fields
The optionally restricted SFNode field type
allows a node to hold a reference to another node
within the directed acyclic graph.
There are two primary attributes:
requiredTypes -- a type or tuple of types that
are acceptable as values for the field
allowNULL -- whether to allow the NULL node as
a value for the field
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Methods defined here:
- coerce(self, value)
- Coerce value to an SFNode reference
- defaultDefault(self)
- Default SFNode value
- fset(self, client, value, notify=1)
- Set the client's value for this property
notify -- if true send a notification event
The SFNode tries to update the value's root
attribute to point to the root of the client
*iff* the value doesn't currently point at
a valid root. (That is, it only updates root
if there is no current root). This is done
without sending notify events.
- vrmlstr(self, value, lineariser)
- Convert the given value to a VRML97 representation
Data descriptors defined here:
- __dict__
- dictionary for instance variables (if defined)
- __weakref__
- list of weak references to the object (if defined)
Data and other attributes defined here:
- allowNULL = 1
- name = 'SFNode'
- nodes = 1
- requiredTypes = ()
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