Render [BillboardedLockX] wrong

[zengfanfan]

See the comparison of screenshots.

Problem 1: the rotation sequence not work;
Problem 2: when not rotating, the face that face camera is not right (should be blue and arrow point to up);

The test files (mdl/blp)

Test.zip

The screenshots

BillboardedLockX-InGame	BillboardedLockX-ReteraModelStudio

[Retera]

I will most likely not fix this. I have a better renderer that probably renders this accurately here. If you would like to go into that repo, parse through the derived mathematics, and then apply them to this repo, I would be OK with merging the pull request that implements the solution. But having done it once already, I do not have time to bother to do it again, currently.

Do you think you will make a pull request of that?

The necessary code is here: https://github.com/Retera/WarsmashModEngine/blob/main/core/src/com/etheller/warsmash/viewer5/SkeletalNode.java#L134

There is already an open source program that I created capable of this. I'm not sure where I can obtain your cube test model, but if we test on UI\Feedback\RallyPoint\RallyPoint.mdx for example, that other software that I linked above appears to render accurately in that case, as shown here:

https://www.youtube.com/watch?v=3uZiYz1oT0k

So, I think the process for previewing that is known, but to be certain it would be helpful if you provided the model you were using to test, to save me time.

[Retera]

2025-11-01.23-14-27.mp4

As we can see here, the open source project in that other repo is able to render this accurately, or similar enough to your video of the game that I am not largely concerned. It doesn't make a lot of sense for me to maintain the Retera Model Studio version in parallel, and doing so is time consuming.

(Apologies, this second comment was made after I realized your test model was available online.)

But as mentioned previously, if you want to make a Pull Request that brings the render logic from the other repository that already solves this, and that pastes that code into this repo in a way that works, I would be happy to merge it.

[zengfanfan]

I'll try when I got time.