All About Natron OFX Plugins

[cgvirus]

This thread is dedicated to NATRON OFX ONLY discussions.
Please use the tag natron-ofx when asking ofx based questions.
It will help to sort and search Natron OFX questions for all the users.

[cgvirus]

Some past discussion:

I'm trying to study how to make OFX plugin

Hi, I’m a visual effect artist and a programmer. Usually I’m using After Effects, but now I’m interested in node based compositor like Natron or Fusion. And for a long time, I want to create a plugin. So I think OFX is a good start. But the problem is the documentation of OFX is minimal. So in this thread, maybe I’ll post my progress in my study, it’s more like a blog. Some insight what I get, my doubt, my question, etc. So if you are interested in this topic, please chime in :D. Or if you h…

Droste Effect Plugin

Hi All… I want to share my plugin from my study how to make plugins… So basically it’s a Droste Plugins, to make this effects: 50 Stunning Examples of the Droste Effect | Webdesigner Depot Webdesigner Depot » Blog Archive I’m using this article: http://roy.red/posts/droste/ Here is the plugin: droste.ofx.bundle.zip (301.7 KB) Tell me what do you think about this plugins :D…

Open seperate openGL Context with OpenFx

Hello, i want to create a seperate openGL Context out of my openfx plugin. after studying openfx-misc plugins i came to the conclusion that it is only possible to draw in the image view of natron. is there any other way to initialize a seperate opengl context? what i tried: compile helloworld.exe and start via system ("helloworld.exe"); gluInit(argc,argv) in the createInstance() function of OFX when starting a exe out of ofx the communication between OFX and helloworld.exe is hard to d…

OpenFX Plugin Development/Debugging on Windows

Hello, i want to start develop my own OpenFX Plugin, but i am struggling with building my Development Enviroment and workflow. currently i use Visual Studio 2017 with the Visual Studio 2015 (v140) Toolchain for compiling Plugins are compiling correctly But for easier development and bug finding i would like to use the VS Debugger So i tried to attach natron-bin.exe and natron.exe to my debugger, but this didn’t work with resolve it worked this way so wich setup and workflow would you reco…

All about Natron Community Plugins

Hey thank you for the reply :D… I have searched that documentation, and if I’m not mistaken, it’s only the base SDK, and as far as I know, there’s no library to do sampling in the base SDK. And I have found this https://github.com/NatronGitHub/openfx-supportext I think there’s what I need, but it seems, this code doesn’t have any documentation… ._.

[rodlie (Ole-André)]

Hi,

I’m planning on adding a WYSIWYG text editor/generator and just wanted to know if this is something the community wants? (I will make it anyway, but with less features if it’s only for myself) It will have less advanced features than ‘Text’, but will be easier to use and more flexible on actual text editing. It will not replace ‘Text’, but be more of a companion node. The plan was to call it ‘RichText’.

Currently it has very few features (as they depend on Natron):

Btw, I also take feature requests for ‘Text’.

I welcome feedback in any way

[devernay (Frédéric Devernay)]

Do you mean supporting kOfxParamStringIsRichTextFormat in Natron, as in
Text: WYSIWYG (kOfxParamStringIsRichTextFormat) · Issue #2 · NatronGitHub/openfx-arena · GitHub ?
That should be fairly easy, since Qt4 already has most of the rich text editing capabilities. Rich Text Processing | Qt 4.8

[rodlie (Ole-André)]

Yes, should be easy (already done several modification on my branch). Just wanted some feedback (feature requests) before I started working more on it.

[cgvirus]

That would be great!
If you are using Qt Library, please consider exposing some animatable params for css stylsheet too. I did a plug for my production using pango+python. Which was very much hacky.

[rodlie (Ole-André)]

CSS might be tricky, I need to convert the HTML to Pango, but not ruled out.

My first goal is to just add some missing widgets to the rich text knob in Natron (align, background etc). Then I want to see the actual text in the editor widget, not code (I have already added font family). And finally I want to mark some part of the text in the editor and modify them independent of the rest. Basic “HTML” editor stuff.

The two last goals will need some work in Natron.

Then add other features needed, and (at some point) see if I can just merge this into ‘Text’ or continue as ‘RichText’.

I have no time frame on this project, will probably only have time on weekends to do actual work on it.

[cgvirus]

Yes after commenting I just went through the doc again. Seems CSS is actually limited on qt. No worries, the WYSIWYG is more than enough. Thanks for your effort.

[rodlie (Ole-André)]

We should keep it to HTML4 traditional and probably avoid CSS.

Supported options in Pango:
https://developer.gnome.org/pygtk/stable/pango-markup-language.html

[cgvirus]

Yes, also Natron text has an issue of scaling in viewport.

If you are interested to see some pango+python action here. May be give some new idea.

https://www.youtube.com/watch?v=qu4CR70sIg0

[rodlie (Ole-André)]

My HTML(+inline CSS) parser and converter (to Pango Markup) for ‘RichText’ now seems to work fairly good. I currently only support basic stuff like family, size and color, but will of course add more features (creating the parser was most of the hard work, the rest is easy). My hacks to Natron will also need to be fixed/re-written (avoid breaking single/multi line etc, I just hacked in rich text support without any regards to other stuff to start developing the plugin).

Screenshot of current state:

One step closer to wysiwyg

[rodlie (Ole-André)]

Release openfx-midi-1.0-beta1 · rodlie/openfx-midi

I needed MIDI input for a specific project and made a very simple MIDI plugin for use in Natron. The plugin is not end-user friendly, but more aimed at advanced users that want to use/expand the plugin for specific uses.

The plugin is very simple (you assign a MIDI input ID and get values back) and probably contains a bug or two. Only tested on Windows and Linux (ALSA, JACK is supported but not tested).

I can add more features or do modifications if someone want to extend the plugin with PyPlug(s).

[tmorley (Thomas Morley)]

I’m going to check out your MIDI plug-in. Is it only one way (out only) or can I use a MIDI instrument to input values into Natron?

[rodlie (Ole-André)]

It’s input only at the moment. See openfx-arena/Midi at master · NatronGitHub/openfx-arena · GitHub for build instructions.