NodeDelegate

class NodeDelegate

This interface gives a high level access to the document structure.

Using this class, not only the API nodes structure can be traversed but also the values.

The values can present a hierarchical structure which is managed by the value itself.

For exemple, a USD reader Rumba node exposes the USD file structure to the Rumba user interface with special USD values and a specialized NodeDelegate.

This class can be used to traverse the document in a user interface.

Deriving this class, one can also define a value internal hierarchy.

Those objects are invalid if the document structure changes. So they shall be keeped only during the traversal and not used if the current node has been destroyed.

If you need to keep references on a node, use a path on this node. The path is a string like “/nodeA/nodeB/nodeC.plugA/nodeD/nodeE”. Here “nodeA”, “nodeB” and “nodeC” are valid rumba:Node objects. “plugA” is the name of a plug of “nodeC”. “nodeD” and “nodeE” are nodes served by the value stored in “plugA”. “nodeD” and “nodeE” do not really exist in the document.

Methods

__eq__	Return self==value.
__getattr__
__ne__	Return self!=value.
attribute(name)	Return a node attribute using its name.
attribute_count()	Returns the number of attributes.
center_of_interest
child(name)	Return a node child using its name.
child_count()	Returns the number of children in the node.
create_transform_observer(func, in_interactive)	type in_interactive bool
far_clipping_plane
find(path)	Returns descendent node_delegate using a path starting at this node.
focal_length
has_transform()	Return true if this node is has a transformation matrix.
horizontal_aperture
is_camera()	Returns true if this node is a camera.
is_node()	Return true if this node delegate is a Rumba Node.
is_orthographic
joint_orient
matrix
mutable_flags()	Returns the mutable transformation component.
name()	The node's name.
near_clipping_plane
node()	Return the node behind this node delegate.
orthographic_width
parent()	Returns the parent node.
parent_world_matrix
path()	Returns the full path to the node.
rotate_order
rotate_pivot
rotation
scale
scale_pivot
set_center_of_interest(coi, mc)	Set the center of interest.
set_far_clipping_plane(far_clipping_plane, mc)	Set the far clipping plane.
set_focal_length(fl, mc)	Set the focal length, in mm.
set_horizontal_aperture(horizontal_aperture, mc)	Set the horizontal aperture, in cm.
set_near_clipping_plane(near_clipping_plane, mc)	Set the near clipping plane.
set_orthographic_width(width, mc)	Set the orthographic width.
set_rotation
set_scale
set_translation
set_vertical_aperture(vertical_aperture, mc)	Set the vertical aperture, in cm.
start_transform
translation
type_name
ui_description()	Return UI description for this node delegate, empty if not specified.
vertical_aperture
world_matrix