[Bf-committers] 3D Connexion ndof support in blender 2.5

[Ton Roosendaal]

Hi,

Good news!

1) That's Ok for now, but mark it with /* XXX hack */ to point at that  
this is potentially wip stuff. Making a struct would be nice too,  
probably each float has a real meaning, that makes the code readable.

2) If aligning fails, always add variables with a name like "pad". In  
your case a single "int pad;" is sufficient

General note: in 2.49 the code for ndof was spread all around, with  
exception handling for tools and view manipulations. We really don't  
want this back, but have the NDOF device deliver nice and well defined  
events instead. These then can become keymappable.

In order to have a NDOF device work *while* using tools (paint, rotate  
view), we need to add still a parallel queue handling in Blender.  
Multitouch devices need this too, and there's already been some work  
on it. I'd advice to not try this for now, I rather have this work  
done after we've put wm_eventsystem.c completely in sane design.  
There's too many loose ends there now. :)

-Ton-

------------------------------------------------------------------------
Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands

On 1 Jan, 2011, at 14:54, Rafael Ortis wrote:

> I am working on a patch to restore 3d Connexion ndof feature in  
> blender 2.5.
>
> My patch is based on the 2.49b version and right now i have been able
> to restore  only the original mode. The other limitation is that
> blender will only seek for the "3DxNdofBlender.plug" in the current
> installation folder and not in the user's ~./blender/plugins folder.
>
> Since I'm really new to blender code i have some questions:
>
> 1. In version 2.49b the last known ndof device state was on window  
> struct :
> ...
> float   ndof[7];
> ...
>
> I have placed this in wmWindow. Was this the right place?
>
> 2. This modification in wmWindow breaks the alignment of the struct so
> i have added a 4 bytes with:
>
> short ndofAlign[2];
>
> Is this OK?
>
>
> I'm using:
>
> Linux (Ubuntu 10.10)
> gcc version: (Ubuntu/Linaro 4.4.4-14ubuntu5) 4.4.5
> 3DConnexion device: Space Navigator
> 3DConnexion driver: 3DConnecion linux version
>
> Happy new year!!!
>
> att.
> Rafael Ortis
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