Group nodes are inner tree nodes in ILNumerics scene graphs. Group nodes are the only nodes that have children. Therefore, the root node for every subtree in the scene is a group node. Also, the parent of any node is a group node.
Group nodes provide flexible options for the access and the management of nodes in its subtree. They serve as convenient base class for most composite visual objects; custom objects should derive from ILGroup.
Several properties of ILGroup can be used to override corresponding settings for all objects within the subtree. Whole scene parts can be set transparent or invisible, the color can be changed and the whole subscene can be moved, translated, scaled or duplicated.
Group nodes support animations. But this feature lacks documentation and its API is not fixed in version 3.
This section contains the following topics: