Viewport (Standard name: ViewportBase)
The Viewport node is a grouping node that specifies a set of rectangular clip boundaries against which the children nodes are clipped as they are rendered.
Inheritance
Code
XML encoding
<Viewport clipBoundary='0 100 0 100' bboxCenter='0 0 0' bboxSize='-1 -1 -1' render='TRUE' showBBox='FALSE' logFeature='' />
Classic encoding
Viewport {
	clipBoundary [0 100 0 100]
	bboxCenter 0 0 0
	bboxSize -1 -1 -1
	render TRUE
	showBBox FALSE
	logFeature [""]
}
    Interface
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    | id | Name | DataType | PartType | Default | ValueType | Description | 
|---|---|---|---|---|---|---|
|  | clipBoundary | MFFloat | inputOutput | 0 100 0 100 | The clipBoundary field is specified in fractions of the normal render surface in the sequence left/right/bottom/top. When the children are rendered, the output will only appear in the specified subset of the render surface. | |
|  | children | MFNode | inputOutput | Node | field that contains a list of children nodes | |
|  | addChildren | MFNode | inputOnly | The addChildren event appends nodes to the children field of a grouping node. Any nodes passed to the addChildren inputOnly field that are already in the children list of the grouping node are ignored | ||
|  | removeChildren | MFNode | inputOnly | The removeChildren event removes nodes from the children fieldof the grouping node . Any nodes in the removeChildren event that are not in the children list of the grouping node are ignored | ||
|  | bboxCenter | SFVec3f | initializeOnly | 0 0 0 | Bounding box center: position offset from origin of local coordinate system. | |
|  | bboxSize | SFVec3f | initializeOnly | -1 -1 -1 | Bounding box size: automatically calculated, can be specified as an optimization or constraint. | |
|  | render | SFBool | inputOutput | TRUE | Flag to control the visibility of the node or subtree | |
|  | showBBox | SFBool | inputOutput | FALSE | Show Bounding Box of Subtree. | |
|  | logFeature | MFString | inputOutput | state, child, parent, route, eventIn, eventOut | controls the logging of changes, state: log state changes (e.g. live), child: log child add/remove, parent: log parent add/remove, route: log route add/remove; eventIn: log receiving of events, eventOut: log sending of events: guiView, runtime system should create node-view, guiEdit: runtime system should create node-editeverything: log everything | |
|  | metadata | SFNode | inputOutput | MetadataObject | container for payload metadata inside MetadataSet element | 
