3D animation from Blender

General Discussion Other

snowcrash..

in General Discussion • Other • 2 years ago

Hi,

I created an animation in blender and exported the file as an .obj file, I can display it in my processing windows, but the animation is not played.

Is it possible to have animation in processing from 3D files?

and if yes, can I control the frame of the animation displayed ?

Thanks

Replies(8)

PhiLho

I don't know well the OBJ file format, but I didn't know it supported animations. Perhaps it is specific to Blender? Or perhaps the OBJ importer doesn't support animations, it is a static importer (something supporting animation must plug in Processing and in the current sketch to integrate its part on each frame)/

sansumbre..

Re: 3D animation from Blender

2 years ago

Paul Bourke has a great overview of the OBJ format, which for better or worse does not support animation data.

I don't have experience playing back animations on 3d models in Processing, but there are a couple of routes you could take. One would be to use a file format that includes animation data like FBX (there may be some open alternative). Another is to import a series of models and vertex-blend between them. Vertex blending works well for animating a character between poses.

flecheria

Re: 3D animation from Blender

2 years ago

It really depends on what you want to do. You can try using OSC protocoll (there are some tutorial useful about this Google->Blender+OSC) but if you wish to control the frames, the simplest thing is using Blender Python API.

snowcrash..

Re: 3D animation from Blender

2 years ago

It is for an Android app running on a device.

When I export from blender, it allow me to use an "animation" option that create lot of .obj files with .mtl files.

It looks to be the different frame of the animation.

The fbx exporter doesn't have any animation option.

Is there any way to explain processing that it need to import all the different files of the animation?

flecheria

Re: 3D animation from Blender

2 years ago

I think Fbx exporter in Blender has some problems, but did you tried with other software?
look at this:
http://wiki.blender.org/index.php/Extensions:2.4/Py/Scripts/Export/FBX

Anyway, the old project of Radiohead's "House of Card" used Processing for treating mocap data, maybe
you can find some hints:

http://code.google.com/p/radiohead/downloads/list

I made a rapid test using collada, it seems to work, but you have to add some pieces of code to use
animation data, try this:
http://www.die-seite.ch/?colladaloader
or this
http://www.polymonkey.com/blogger-polymonkey/2008/03/collada-loader-003.html

I don't think that rewrite an obj file every frames it's a good solution, expecially if your goal
is working on mobile devices.
It's a quite interesting issue, but It needs a lot of work. Good luck and let us know if you find a good solution.
Paolo

snowcrash..

Re: 3D animation from Blender

2 years ago

colladaloader example doesn't work on my computer using Processing 0194...

"NoSuchMethodError: You may be using a library that's incompatible with this version of PRocessing"

I need to use this processing version because of the Android mode.

flecheria

Re: 3D animation from Blender

2 years ago

yesterday i made some quick search about this issue. I find this, it works with multiple obj format.
http://www.rozengain.com/blog/2010/05/18/loading-multiple-3d-objects-from-an-obj-file-min3d-for-android/
http://code.google.com/p/min3d/

also this is could be useful:
http://robotics.fau.edu/wp-content/uploads/2011/01/bchamba_chess_animation_dec.pdf

Will be a nice week end?
Paolo

snowcrash..

Re: 3D animation from Blender

2 years ago

Mint 3D looks cool !! Is there any way to use it directly in Processing as a library?

it is about Java as well so seems to be possible.

The second Collada loader from Polymonkey, give me an error as well...

however the example is running but with a black window.

Here what it says:

| Something in the dae file isn't supported by the loader. Here is the message

| Exception: java.lang.NullPointerException

| Make sure the dae file has been triangulated before export

This library was made in 2008, so may be not working anymore with processing.

Top Reply

Statistics

8 Replies
2724 Views
1 Followers

Actions

Permalink