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    <p>Traversal can easily be done by utilizing the <code>Find&lt;T&gt;()</code> function. It allows the definition of a predicate function which is called for every node in the scene, matching the given type parameter T. </p> <p>Let's take the following scene, showing a simple line plot (<a href="http://ilnumerics.net/ilcc.php?ilc=ia5d62c" rel="nofollow">http://ilnumerics.net/ilcc.php?ilc=ia5d62c</a>):</p> <pre><code>var scene = new ILScene { new ILPlotCube { new ILLinePlot(ILMath.array&lt;float&gt;( new float[] { 1, 3, 5, 2, 7}, 1, 5)) } }; //scene; scene.Find&lt;ILGroup&gt;(predicate: n =&gt; { // this predicate is called once for every node Console.Out.WriteLine(n.ToString()); return false; }); </code></pre> <p>This gives the following output: </p> <pre><code>ILGroup #20 '--' Childs:[4] Camera: #21 - Polar r:10 f:0° ?:0° - Pos X:0 Y:0 Z:10 - Lookat X:0 Y:0 Z:0 - Top X:0 Y:1 Z:0 ILGroup #22 'Screen' Childs:[1] ILGroup #23 'Light0Group' Childs:[1] ILPlotCube #26 'PlotCube' Childs:[2] ILPlotCubeScaleGroup #27 'PlotCubeScale' Childs:[3] ILPlotCubeDataGroup #28 'PlotsData' Childs:[1] ILLinePlot #57 'LinePlot' Childs:[2] ILMarker #59 'Marker' Childs:[2] ILAxisCollection #30 'AxisCollection' Childs:[3] ILAxis #31 'AxisGroup' Childs:[5] ILTickCollection #32 'TicksCollectionGroup' Childs:[1] ILAxis #39 'AxisGroup' Childs:[5] ILTickCollection #40 'TicksCollectionGroup' Childs:[1] ILAxis #47 'AxisGroup' Childs:[5] ILTickCollection #48 'TicksCollectionGroup' Childs:[1] ILSelectionRectangle #55 'SelectionRectangle' Childs:[1] </code></pre> <p>Note that the generic type T in <code>Find&lt;T&gt;</code> determines the type of nodes to consider for output. Here, only group nodes are considered. In order to recognize ALL nodes within the scene, one may use <code>Find&lt;ILNode&gt;()</code> instead.</p>
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    1. POWhat is the best way to hierarchically traverse a scene graph (aka ILScene)?
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    1. COYou're saying, that I should use scene.Find() to enumerate through all nodes (or nodes of a certain type) and then re-build the hierarchy by looking at the Parent property and comparing it with the previous item in the list!? All methods I found on ILScene just give a flat list of scene graph items. It would already help, if one could obtain the root node. But your comment made me look at the order of items returned from .Find or the enumerator. If I'm not mistaken the order of items in the list corresponds to a depth-first tree traversal. Correct?
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    2. COP.S. Using Find<ILNode>() is the same as using the enumerator on ILScene, isnt it? Just without the overhead of "filtering" the results.
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    3. COFrom your question it was not clear to me that you are trying to actually rebuild the tree hierarchy. My answer shows how to traverse the scene. Could you describe, what you are trying to achieve? A clone of the scene? And what is the final goal? There might be easier ways to achieve the same result?
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