[cello-devel] Cello and Celtk?

[Ken Tilton]

Not really. The Cello/Celtk merger, I mean. I got confused between 
wanting to leverage Tk and not wanting to give up on the GUI once purely 
implemented in OpenGL with (minimal) Freeglut window management.

The simple approach of using Tk as if it were a glorified Freeglut did 
not seem to leverage Tk enough.

Blending Cello with Tk looked nasty. The timing thing with Tk is a big 
problem. I wanted to try making a Cello-classic row with layout coming 
from Cello geometry instead of Tk "packing", but that then I cannot let 
Tk decide a button size, because the Cello layout wants to know how big 
are the things it is laying out JIT after calling make-instance on them, 
but we have to wait for the client queue to run, which is when Tk gets 
asked to create instances, only after which it will be happy to tell us 
widget dimensions.

It started to look like another week of "tool building", and it is not 
even clear that I should not just be letting Tk do all this, so...

This release is a punt. I will be using Celtk and esp. Togl on the 
commercial app I am building and let Cello evolve therefrom naturally. 
This will be a Tk (Celtk, that is) application with the Togl widget 
slowly picking up tricks from the Cello code. That lets me get to work 
on the commercial app functionality sooner, which I really need to do.

How bad a punt? Cello.asd is a joke. I made an effort to eliminate the 
several files that got cut from Cello, but I think I forgot completely 
to create an ASD for the new GUI-GEOMETRY package. That got carved out 
of Cello and installed as a subdirectory of Cells. As always, consult 
LPR file types to find out how I build software.

Cello.lpr now includes nehe-06.lisp. That includes test function 
(nehe-06::nehe-06). Over here, I open and build Cello.lpr in AllegroCL, 
and test with nehe-06. That demonstrates OpenGL, GraphicsMagick, FTGL, 
and OpenAL, as well as a little Lisp history.

Aside from Cello you will need Cells, Celtk, and CFFI. Also DLLs out the 
wazoo.

Write if you need help with this.

kzo


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