Stream: brlcad

Topic: fbzoom

starseeker (Mar 25 2020 at 23:49):

@Sean How does one use fbzoom? I tried it and it does seem to run, but as far as I can tell the controls don't work - at any rate, I can't use "q" to quit...

starseeker (Mar 26 2020 at 02:33):

Me wonders if it might be a good student project to implement a glfw+imgui interface to replace the last remaining termio based applications...

Sean (Mar 26 2020 at 02:40):

@starseeker typing a ? will display a menu

Sean (Mar 26 2020 at 02:41):

it's working for me (not a current build, doesn't have the termio changes)

Sean (Mar 26 2020 at 02:42):

q or enter should quit

Sean (Mar 26 2020 at 02:44):

you attach to an existing fbserv and can use +- to scale, hjkl to pan 1pixel, HJKL to pan a lot, c to center, etc

Sean (Mar 26 2020 at 02:47):

pretty sure we introduced bugs in some of the libfb zoom machinery at least in /dev/X, which I think is related to the buggy interlacing one sees when renderings smaller than 512x512, but the basic zooming logic does seem to work perfectly with /dev/ogl

Sean (Mar 26 2020 at 02:47):

Screen-Shot-2020-03-25-at-10.46.55-PM.png

Sean (Mar 26 2020 at 02:52):

oh, I think I see what you might have done.. just running "fbzoom /dev/X" is wrong usage

Sean (Mar 26 2020 at 02:54):

looks like if you run it that way, they key bindings work initially until you try to quit, then it gets stuck

Sean (Mar 26 2020 at 02:56):

but again, that's not the valid use case -- you have to attach to an fbserv:

fbserv -S1024 0 /dev/ogl
pix-fb -F0 share/pix/moss.pix
fbzoom -F0
...

starseeker (Mar 26 2020 at 11:41):

Ah! OK, looks like it's working after the libtermio changes (I couldn't get it working before them either, but I did get fbpoint to work)

Sean (Mar 26 2020 at 13:38):

@starseeker that's also a case that doesn't really need termio -- it could just print the menu and coordinates if it needed to. It's just using a few control codes to replace the current size and position values bing printed.

starseeker (Mar 26 2020 at 13:51):

Well, the main incentive to fiddle with it now would be to get it working on Windows - putting the termlib bits in libtermio eliminated most of my other pain points, as near as I can tell right now. (We'll see what Mac/BSD do.)

starseeker (Mar 26 2020 at 13:54):

I've burned a lot of time over the years on the FindTERMLIB logic (which often didn't work right even after I rammed my head into it for a while) and playing with the new build setup I noticed it wasn't reliably looking where it needed to at runtime for the termcap file. I don't know if it really needs that for what we're using it for, but if it does now I can use the bu_dir logic in libtermio to point it to the right place reliably. (Haven't bothered yet , but easily doable if there's a way to test it and a need to fiddle with it.)

Last updated: Jan 09 2025 at 00:46 UTC