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Home: FBX SDK Help

 

Setting up the scene

Tutorial 2: Traversing the Scene Graph

Getting references to each of the child nodes

 

Getting a reference to the root node of a scene

Here is a diagram showing an extremely simple scene containing a camera, a light, a ball, a hoop, and a stick figure of a basketball player. A tree must have a root node, which is an anchor point for the scene. It never represents anything “real” in the scene:

In FBX, a scene has exactly one root node. KFbxScene has a function called GetRootNode() which returns a reference to the root node of the scene::

// to get the root node

const KFbxNode* GetRootNode()

{

    return gScene->GetRootNode();

}

Here is a diagram showing the scene object, the root node, and the other nodes. We’ve simplified the diagram by eliminating the player nodes:

Scene objects are instances of Class KFbxScene. Node objects are instances of Class KFbxNode.

The root node referenced by a KFBXScene object is not saved in an exported file.

So if you want, for example, to apply a global translation to all objects in the scene: create a node (named, for example, RootNodeGlobals) below RootNode and above the BallNode, HoopNode, etc.; apply the globaltranslation to RootNodeGlobals.

RootNodeGlobals will be saved with the global translation properties.