[Bf-committers] Particle system / Material choice / implementation of do_versions : problem with preview.blend

[Julien Duroure]

Hello,

I don't think it a good idea to display material, and to store only
integer. I think ( but I am not a regular blender dev ) it must be
consistent between what we see and what we store.
That's why In my current implementation, I replace Integer "Material Index"
by a material' pointer.

In do_versions, I only have to retrieve material corresponding to each
index, using give_current_material
But I have the problem I explain in my previous email...

Regards,

Julien

On Sat, Mar 30, 2013 at 2:46 PM, trouble daemon <troubledaemon at gmail.com>wrote:

> Hi!
>
> First of all, I love the idea of finally replacing silly numbers with
> actual names of materials! Surely this has been a feature request of
> everyone that uses blender since they were added :)
>
> But what I question is why you would need a do_versions? Would it not make
> more sense to leave the underlying value as a number, but just change the
> display to be a looked up value from some py dict or enum or something?
> This would allow it to "just work".
>
> Anyways, forgive my ignorance as I am not aware of what the typical
> approach to this would be in blender. And thanks again for working on this
> type of number -> string mapping! :)
>
>
> Dan
>
>
> On Sat, Mar 30, 2013 at 8:46 AM, Julien Duroure <julien.duroure at gmail.com
> >wrote:
>
> > Hi all,
> >
> > I implemented some code to replace, in particle render section, the
> > material index ( 1, 2 or 3 for example ), by a direct material choice (
> > Material, Material.001, etc...)
> >
> > Code is now OK, but I am currenly working on do_versions, to be able to
> > open old files with this new "feature".
> >
> > I try to implement this kind of code : http://pastebin.com/Czy3rfqZ
> > But I have a segfault when access on part->omat.
> > It seems to be linked to preview.blend objects.
> > GDB said that psys->part adresse can't be access.
> >
> > I don't know how preview exactly works : is there someome can explain me
> > why I have this problem and how to correct it ?
> >
> > Thanks & Regards,
> >
> > Julien
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