Incidentally I've made a lot of progress in the last couple of days -- I've got a working prototype of the simple "gain" shader where the parameter is "soft"-defined in a descriptor file rather than hardcoded in the Lua script. It will support single values, pairs, triplets, and RGBA colors in 4 variants (float and integer, times with alpha vs alpha assumed to be 1).

Need to clean it up but I think it will be pretty cool.

hjh

Hi to all, i'm new in the forum and still a newbie in pure data, i do outing, i come from max msp.
I wanted to thank @cuinjune for creating Ofelia and also @60hz for creating these abstractions. I am currently trying to experiment by creating a GUI with sliders etc. As I am absolutely not familiar with LUA I wanted to ask if it is possible to create multiple OF windows. Because any object I insert (both abstractions and other) is rendered in the same window. Maybe the $ dollar doesn't seem to work? my aim would be to create a clickable button that creates a pop up with another Ofelia render window.
thanks

@cipp0 Hi, that is not possible with Ofelia because you can create only one global OF window per Pd instance. Ofelia is not designed to be used for creating multiple windows applications.

hi @cuinjune, thanks for the reply! I imagined it, launching two instances of PD and making them talk in OSC I managed to do what I meant thanks also to the abstractions of 60hz.
On the one hand the GUI and on the other the manipulation of the visuals. With ofxOfelia would it be possible to create a single standalone with two windows instead? sorry for the ignorance but I have no experience of OpenFrameworks

I was imagining a diy software for audiovisual
2instance slider.mov

@cipp0 You can do multiple windows if you really need it using pd~ object with ofelia, I tried it without problem. Then you can share data between two pd instance using network or share_mem (shmem in deken) external.

@cipp0 It should be technically possible to create multiple windows in a standalone OF app with ofxOfelia addon by using OF's multi-window trick: https://blog.openframeworks.cc/post/133404337264/openframeworks-090-multi-window-and-ofmainloop But I imagine it won't be an easy task. I think implementing the GUIs in OF and C++ (without Ofelia) for the second window would be easier.

If you really want to do this, you can also consider drawing the GUIs using Tcl/TK, or using an external that allows you draw images on a Pd canvas to mimic the knob.

An iterative spiral, with an image, shader and texture mapping, without touching Lua code directly:

21-0210-iteration-recoded.mp4

hjh

Very nice @ddw_music

without touching Lua code directly:

I am curious about the progression, do you think it could be added to the list of abstractions soon?
I am curious about the needed changes required if it is the case?

Cheers!

I have updated many abstractions, and changed a bit the way some works...
It was ok for my last workshop, but still thinking about a way to make it better.

I'm definitely very late to this discussion but want to see if Gem is still considered a good enough tool for visual programming? I have tried to install it on Linux over the past few weeks and in a lot of cases it just doesn't work. But even when it does, it is not able to playback video well, which means I have to now get inside the video backend stuff and maybe compile the library myself....
So now I am seriously wondering if going through this trouble is even worth it if the library is not being maintained or people are moving away from it.

There are still fantastic things being created with Gem. See Artiom Constantinov on youtube.