Re: [zzdev] Rasters!

[Tuomas Lukka <lukka@xxxxxxxxxx>]

On Sun, Mar 11, 2001 at 01:00:45PM +0100, B. Fallenstein wrote:
> 
> Tuomas Lukka wrote:
> > Finally I'm coming to understand the mathemathical nature
> > of rasters and why they would be useful when using constraints
> > to describe the final view. Please take a look at the just committed
> > version (1.2 or greater) of Documentation/Manuscripts/Rasters/raster.tex.
> > The VanishingView could be described in about 10 lines of code...
> 
> I think you get the tree view wrong. The "middle children" approach
> seems not to convey the real meaning to me-- which is: The center of the
> childrens' rank == the center of the parent cell + a gap constant.
> 
> But the issues get more complex... like in this structure:
> 
>   / A1
> A - A2
>   \ A3
>   / B1
>   / B2
> B - B3
>   \ B4
>   \ B5
> 
> Here, the A node went up so as to be in the middle of the A1-A3 rank.
> Anyway, specifying this is much easier when you can address the center
> of a rank directly, instead of worrying about "middle children."

True. I wasn't satisfied with it when I wrote it. Will revise.

We should be treating the child rank as a whole somehow...

	Tuomas