Re: [Gzz] Background

[Benja Fallenstein]

Tuomas Lukka wrote:

> > > The official way to set the background color now is that the *Shower*,
> > > in generate() puts a SolidBgVob (or later also ImageBgVob or others) with
> > > the desired color into the vobscene first, at a large depth. (It should
> > > be coordless, but that's difficult for AWT).
> > >
> > >      
> > Uh, why? If you place it into coordset 0, it gets sorted so that it is 
> > drawn as the very first thing, no matter what its depth coord is, IF you 
> > don't have any other vob in cs 0.
> >    
>
> Is that so? Coordset 0 is "beginning"? Doesn't get depth sorted?

It is the "beginning." It *does* get depth-sorted.

The depth sorter is per coordsys: first the coordsys is drawn, then all 
coordsys inside it in depth order, then the next coordsys inside the 
same parent.

> 1) do we want that?

I definitely think so. a) All stuff inside a cell should be drawn at the 
same time. b) Things inside a cell should be able to have different 
depths. This mandates the system outlined above.

> 2) if yes, we need to document it as part of the API.

Ok.

> > The difficult part seems to be bg fading? That is done in 
> > OrthoRenderInfo if it is passed the correct bg color when it is created, 
> > which needs to be done in OrthoCoorder (search for "new OrthoRenderInfo").
> >    
>
> Ah, true. Maybe should simply look through coordset 0 for BgVob.

Yes, probably.
-b.