Amazon VERSION 2.0V1 Guide de l'utilisateur télécharger pdf (Page 109)

15 Wrapping SGG Plug-Ins in a

Custom Node

Scene Graph Generator (SGG) plug-ins allow the arbitrary creation of scene graph locations and attributes. This

flexibility means they can be used for a variety of tasks in a Katana project. One common usage of the SGG is to

import proprietary geometry using the familiar node pattern shown below.

This is achieved by creating two nodes within the Node Graph:

1. ScenegraphGeneratorSetup – creates a location of type scenegraph generator and a number of attributes

at this location which describe the SGG and any configuration options that have been set in the Parameters

tab.

2. ScenegraphGeneratorResolve – scans the scene graph for locations of type scenegraph generator and

then launches the appropriate SGG passing it the arguments which are stored under scenegraphGenerator.args

This approach is beneficial in a number of situations where the location generated in point one is to be resolved at

some point further downstream. However, for input nodes - a node with no input ports and one or more output

ports - resolution usually occurs immediately following the SGG setup. In such cases it is beneficial to wrap the

process within a single node, possibly presenting a simplified UI via the Parameters tab.

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Amazon VERSION 2.0V1 Guide de l'utilisateur Page 109