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Fixes depth-first-traversal order in Node. #1012

merged 2 commits into from Feb 2, 2019


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commented Feb 1, 2019

Calling Node.depthFirstTraversal() with DFSMode.PRE_ORDER doesn't produce the expected order of traversal.

It doesn’t pass the DFSMode to the recursive calls. Thus, the PRE_ORDER mode is only applied in the first call and will default to POST_ORDER further down the scenegraph.

Test code:
The snipped also includes expected and actual results.

I've been told to also create an issue for this so others who encounter this problem will know about it, even if this expected behaviour.
But if this is expected behaviour, I think it should be mentioned in the Java Doc.

Fixes depth-first-traversal order in Node.
DFSMode needs to be passed to the recursive calls so the selected order is also applied further down the scenegraph.
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Thank you for opening this pull request. Please add tests to the jme3-core/src/test/com/jme3/scene package.

@stephengold stephengold merged commit 254a583 into jMonkeyEngine:master Feb 2, 2019

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@stephengold stephengold added this to the v3.2.3 milestone Feb 20, 2019

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