vrml.nodepath

Representation and manipulation of scenegraph paths

Classes

class NodePath( list ):

Path within a scenegraph from root to particular node

Has minimal operations, most high-level functionality is provided by sub-classes such as vrml.vrml97.nodepath and OpenGLContext.scenegraph.nodepath

__add__( self , other )

Return a new path with other as tail

__eq__( self , other )

Check whether we are equal to another path

__getslice__( self , start , stop )

Return a new path with our items from start to stop

__repr__( self )

Code-like representation of the node path

Note: this doesn't use super for determining the base representation, as that might wind up creating a name like: WeakNodePath( WeakTuple( Node, Node,...))

__str__( self )

Simple representation of a node-path for human consumption

common( self , other )

Return the common root sub-path between ourselves and other

If there is no common sub-root, returns an empty path

class WeakNodePath( NodePathWeakList ):

Node path that uses weak-references to nodes

You hold strong references to these paths, then wrap all uses of them with checks for weakref.ReferenceError to check for dead paths.