[Bf-gamedev] Perhaps consider OpenGEX instead of FBX/Collada?

[Eric Lengyel]

Hi Juan --

Thanks for the link to your DAE exporter. It will be a useful reference. And I’m glad to hear about your plans to support OpenGEX in Godot.

You’re likely aware that OpenGEX supports multiple animations in the same file. I’m planning to add support for those in the Maya / Max exporters soon, and I’ll take care of it in the Blender exporter as well. There simply wasn’t time in the first iteration.

I’ll see what can be done about relative paths. OpenGEX does support those, but they are relative to the OpenGEX file, which may be in a different location than the Blender file. This may be problematic, but I haven’t looked into it yet.

-- Eric



From: Juan Linietsky 
Sent: Wednesday, October 08, 2014 6:34 AM
To: bf-gamedev at blender.org 
Cc: Przemyslaw Golab 
Subject: Re: [Bf-gamedev] Perhaps consider OpenGEX instead of FBX/Collada?

Hi Eric, I'm glad you have decided to make the exporter yourself, I was afraid someone would attempt to do an exporter and would end up like the rest of the broken exporters in Blender. As soon as you publish it, I'll add support in Godot immediately. 

If it helps you as reference, here is my own Collada exporter (which is almost feature complete):
https://github.com/okamstudio/godot/tree/master/tools/export/blender25


Here's some requests though:

1) As said before, please add an option for exporting all clips (Actions) from the scene instead of the main animation. This is probably tricky because actions use relative paths, so they can be reused between objects. I have found that the most correct way to do this is the following:
    a) Go through all actions and all armatures (or objets).
    b) Only export animation tracks for objects that match the path for each curve 
   If in doubt you can check my python code (relevant portion is
here): https://github.com/okamstudio/godot/blob/master/tools/export/blender25/io_scene_dae/export_dae.py#L1162

2) Please respect blender's ability to use relative paths to images. This way ogex files can be pushed to version control and opened somewhere else, or shared in asset exchange sites.

Thanks for your work!

Juan
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