Hello everyone,

I'm the author of libtisch, a C++-OpenGL-based library for multitouch development. I'd like to integrate it into Processing as an external library. I have created some Java bindings which seem to work; however, I'm not sure if there's any chance of success when calling OpenGL code written in C++ from Java, even if it's only inside the context created by Processing.

Has anybody any experience with mixing OpenGL and native code?

Many thanks, Yours, Florian

Hi again,

I'm a bit surprised myself but it's working: libTISCH is now running in Processing! :-D At the moment, it's still a bit hackish and some parts are missing, but the graphics seem to work - for the network communication part, a bit of refactoring might be needed.

I have one question regarding OpenGL, though: when I do something like this:

void draw() {
 background(0);
 container.draw(); // this is a JNI wrapper class
}

I just get a black background. However, this works:

void draw() {
 background(0);
 PGraphicsOpenGL pgl = (PGraphicsOpenGL) g;
 GL gl = pgl.beginGL();
 container.draw(); // this is a JNI wrapper class
 pgl.endGL();
}

Does anybody have an idea why?

Many thanks, Yours, Florian