[PD] [Gem] changed [ortho] behaviour

Roman Haefeli reduzent at gmail.com
Sun Sep 10 22:34:39 CEST 2017

On Sam, 2017-09-09 at 18:50 +0200, cyrille henry wrote:
> Le 09/09/2017 à 12:44, Roman Haefeli a écrit :
> > 
> > On Sam, 2017-09-09 at 12:37 +0200, cyrille henry wrote:
> > > 
> > > hello,
> > > yes, the ortho was buggy and fixed. But the old behaviours is
> > > still
> > > possible if you send a "compat" message.
> > > See help file.
> > I see, thanks. I should have checked the help file in the first
> > place.
> > 
> > But how can someone use the full window area with the new default
> > mode?
> changing the windows perspective!!!
> (using the perspec message to gemwin, see help file)

Sorry, I don't understand. Maybe I simply don't understand which
question this answers. 

> > Why is there a limit?
> what limit?

What I am experiencing when using [ortho] is that only the lower left
500x500 pixels of the gemwin can be used for rendering. Also, the
center seems to be in the middle of this 500x500px area. This is with
current master (cc0d464a) on Ubuntu 16.04 with a Intel graphics. Please
check this screen recording:


> "ortho" change the way object appear smaller far away.

This I understand. All parallel lines appear parallel in orthographic

>  It also use to change the perspective and was in conflict with the
> gemwin "perspec" message.

This I don't understand.

> the conflict have been removed.

I'm a bit confused whether I hit a bug or if there is some big
misunderstanding on my part. Can you check the above video and tell me
if you get the same?

BTW: the 'compat' method does not work for me. No matter whether I send
'compat 0' or 'compat 1', the rendered output looks exactly the same.

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