procedural

This node acts as a proxy for geometry that could be defined at a later time than the node’s definition, using a procedural supported by NSIEvaluate. Since the procedural is evaluated in complete isolation from the rest of the scene, it can be done either lazily (depending on its boundingbox attribute) or in parallel with other procedural nodes.

The procedural node supports, as its attributes, all the parameters of the NSIEvaluate API call, meaning that procedural types accepted by that API call (NSI archives, dynamic libraries, LUA scripts) are also supported by this node. Those attributes are used to call a procedural that is expected to define a sub-scene, which has to be independent from the other nodes in the scene. The procedural node will act as the sub-scene’s local root and, as such, also supports all the attributes of a regular transform node. In order to connect the nodes it creates to the sub-scene’s root, the procedural simply has to connect them to the regular root node .root.

In the context of an interactive render, the procedural will be executed again after the node’s attributes have been edited. All nodes previously connected by the procedural to the sub-scene’s root will be deleted automatically before the procedural’s re-execution.

Additionally, this node has the following optional attribute:

Specifies a bounding box for the geometry where boundingbox[0] and boundingbox[1] correspond, respectively, to the “minimum” and the “maximum” corners of the box.