Getting references to each of the child nodes

FBX SDK Programmers Guide > Tutorial 2: Traversing the scene graph >

Each node in an FBX scene has exactly one parent node (with the exception of the root node, which has no parent).

Each node can have zero, one or many child nodes (0..n).

To display the scene graph as a tree, SceneTreeView displays the root node, and visits and displays each of its children. More precisely, it recursively visits and displays all the children, grandchildren, etc. of each of the root node’s children:

// used to add the rootNode name and start to add children nodes

void DisplayHierarchy(

 const HWND hTv

 HTREEITEM htvi = InsertTreeViewItem(hTv, GetRootNodeName(), TVI_ROOT);

 for(int i = 0; i < GetRootNode()->GetChildCount(); i++)

 DisplayHierarchy_Recurse(GetRootNode()->GetChild(i), hTv, htvi);

...

 for(int i = 0; i < pNode->GetChildCount(); i++)

 // recursively call this

 DisplayHierarchy_Recurse(pNode->GetChild(i), hTv, htvi);

NoteFBX SDK allows two or more nodes to have the same name. However, the file format you use to store your scene may not alllow duplicates. If so, your “extra” nodes will be renamed to nodename_ncl1

FBX File Format (.fbx) versions 1.0 to 6.1 do not allow duplicate node names.

All relationships are two-way

You can also get from a node a reference to its parent, as well as to the scene that contains it:

KFbxNode MyParentNode = pNode->GetParent();

KFbxScene MyScene = pNode->GetScene();

In general, all relationships in FBX are two-way. For example:

A child node “knows” its parent, and a parent node knows each of its children.
A node knows its scene, and a scene knows the root node of the tree that contains all nodes in the scene.
A node knows its constraints, and a constraint knows which nodes it constrains.