[Bf-committers] Layer System code

[Ton Roosendaal]

Hi,

Yes I aim at removing G. Try to code things locally, like from scene or  
view3d context. That will make migration to 2.5 relatively painless.

However, recoding the layer system is going to affect a whole lot of C  
files though, so you might consider to first work on proof-of-concept?  
And later on help to migrate it to the new blender source; this mostly  
because for 2.5 nearly *every* function that's now in blender/src needs  
to be revamped.

I also want to emphasis that a redesign for the layer system is not an  
easy task... the proposal in wiki has good parts, but also flaws. (bone  
layers could better have been groups, the UI mockups are ehh... ). It  
would really help to get the design specs right first, not about  
implementation, but on abstract level: (quote from stivs)

> 1) Figure out what you need (Requirements)
> 2) Decide how to provide those features (Design)

I quickly went over the discussion about this, and there's several good  
analysis contributions. Who brings this together in a great design?

Like; what is a layer? What then is Group good for? And what if we  
really want photoshop/gimp style layers in Blender (like with blending  
operations)? And how does the Outliner relate to it? And so on... the  
2.5 recode definitely allows us to bring in Blender great new concepts,  
easier than trying it in current trunk...

-Ton-



On 2 Jan, 2008, at 11:51, David Bryant wrote:

> I'm pesently recoding the layer system to give Blender more layers.In
> process,I need to ask will the 2.5 Blender code cleanup process change  
> or
> get rid of  the G struct (since the G.scene struct might be affected)  
> and
> since Blender's codebase is getting an overhaul will the way layers are
> handled be affected?
>
> I'm almost finished but,I can wait for the 2.5 cleanup to be completed  
> if
> need be.But, this I need to know.
>
> Thanks in advance,
> Digikiller
>
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Ton Roosendaal  Blender Foundation ton at blender.org  
http://www.blender.org