[Bf-modeling] Mirror Editing

[metalliandy]

Yea, I agree with Jonathan. It's not something I have ever used and I 
would also vote for removing it from extrude altogether if it can't be 
fixed.
Mirror editing is a very important feature, but I generally go straight 
for the mirror modifier rather than using anything else because it is so 
robust and reliable.

I'm not 100% sure that the mirror option is something that really needs 
developing currently as people have a solid way to do this already with 
the mirror modifier.

It might be an idea to gauge how long it will take to fix and just move 
onto something else if it is going to take ages...at least for the moment.

@Jonathan, It is my understanding that Topology mirror should detect 
symmetry in a mesh automatically along any given axis where the 
vertices/faces have the same topology but their positions in 3d space 
are modified. It doesn't work how I would expect either as the edits 
seem to be linked to the side being modified directly if the mirror 
modifier was being used, which isn't very useful really. I would expect 
the edits to be relative to their individual positions (1 vert. moved in 
Z by 1 unit would move the mirrored vert up in Z by 1 unit too and not 
to whatever the parent vert. currently is).

Cheers,

-Andy

On 15/06/2013 16:21, Jonathan Williamson wrote:
> I have actually never once tried to use Mirror Editing on Extrude 
> until today. I don't think I knew it was there... It's definitely very 
> broken and inconsistent at the moment so at the very least I vote to 
> remove it from extrude.
>
> However, regular Mirror Editing is incredibly handy for those times 
> that you need it. My preference would be to try and make it work as 
> all around as possible. If I could choose, I would first opt for full 
> settings support (seams, sharpness, creases), as this is what I most 
> commonly want out of it. Then after setting support the tool support 
> (extrude, subdivide, bridge, etc) would be great. I don't see any 
> reason to split it into Off, On, and On + Tools. I'd vote for just 
> Off/On. This keeps it simple for users.
>
> I think this is an important tool to fully support, rather than just 
> going for the Mirror modifier, particularly for those times that you 
> have a model that is 90% symmetrical. For example, perhaps I've 
> altered a characters head to make it more interesting and asymmetrical 
> but the rest of the model is symmetrical. I can't really use a mirror 
> modifier in this case, but the Mirror Editing would be ideal.
>
> As one last thought, I have no idea what Topology Mirror does. I can't 
> never seem to get it to work like I'd expect. How's it work?
>
> Jonathan Williamson
> http://cgcookie.com
>
>
> On Sat, Jun 15, 2013 at 3:04 AM, Campbell Barton <ideasman42 at gmail.com 
> <mailto:ideasman42 at gmail.com>> wrote:
>
>     Hi All,
>
>     To kick off discussion - one feature Id like to either improve or
>     remove is extrude `Mirror Editing` option.
>     Bug report (only if your interested in details)
>     http://projects.blender.org/tracker/index.php?func=detail&aid=33374&group_id=9&atid=498
>
>
>     Note that there are only a few tools that support mirror (besides
>     painting, weight paint)
>     - Transform
>     - Smooth
>     - Subdivide smooth did in 2.4x
>     - Extrude
>
>     Extrude aside, I'd also like to consider if we want to try to make
>     mirror editing generally more useful to the point that users can
>     expect most edits to one half of a mesh will happen to the other...
>
>     Since supporting mirror-extrude only is a bit arbitrary IMHO.
>
>
>     We could make it work on editing operations like
>     subdivide/bridge/inset/bevel, simply by mirroring the selection before
>     the operator runs, clearing the selection after.
>
>     Also setting properties (edge sharp, crease, assigning materials,
>     flipping normals) could be made to work...
>
>     Having options for each tool would get annoying, so we could have 3
>     states [Mirror: Off|Enabled|Enabled+Tools] --- names could be better,
>     Enabled would be for transform only, tools would make all editing
>     operations mirror.
>
>
>     OR ... we could just assume that if people really want to mirror a
>     model they will use the mirror-modifier or edit then symmetrize and
>     not loose our development time attempting to make every tool support
>     mirror operations.
>     - Just remove extrude mirror option and keep mirror limited to a few
>     tools as it is now.
>
>     Your thoughts?
>     --
>     - Campbell
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