yade-dev team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

I think we should stay with version 2 unless there are some big
advantages. (I looked at the differences and merged source for both, so
it compiles with 2 and 3, so we don't have to care actually. It is
always better to have one code (and separate parts that are different
using #if version>... macros than having 2 similar code; that avoids
fixing bugs twice)

v


> I added the Eigen development trunk directly. They move to Eigen3,
> what is planned to be for may. 
> 
> I think it is better for us now to adopt the wrapper to Development
> branch, it will be much more easier later to switch to "packaged
> eigen3".
> 
> What do you think?
> ______________________________
> 
> Anton Gladkyy
> 
> 
> 2010/2/11 Anton Gladky <gladky.anton@xxxxxxxxx>
>         I checked and cannot understand, why Wm3 sometimes "looses"
>         the angle. r40
>         ______________________________
>         
>         Anton Gladkyy
>         
>         
>         2010/2/11 Václav Šmilauer <eudoxos@xxxxxxxx>
>         
>         
>                 > Quaternion from 2 vectors (Align in Wm3) also gives
>                 different results
>                 > with Eigen library.
>                 
>                 
>                 Can you check what's wrong with Align? I used it in
>                 Dem3DofGeom classes
>                 and results are good in wm3. Its geometrical meaning
>                 is very clear, it
>                 computes quaterion rotation from one vector to
>                 another. What's the
>                 problem there? Try with normalized/non-nomrlaized
>                 vectors etc, on some
>                 examples you can compute yourself, like
>                 Align(Vector3r(1,0,0),Vector3r(0,1,0)) should be
>                 Quaternion(Vector3r(0,0,1),pi/2) (as axis,angle). And
>                 so on.
>                 
>                 Cheers, v
>                 
>                 
>                 
>                 
>                 
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