My first experience with Processing was last December and I was very impressed with the examples that came with it, particularly the 3D stuff like Toroid.
I thought it would be nice if there was a set of GUI components that could be used to control the various toroid control variables at run time.
I decided to create my own library not realising at the time there were already 2 such libraries out there.
Anyway the library is written and provides the usual labels, textfields, sliders, checkboxes and option groups but also a collapsible movable panel object to group them visually.
I would like to thank JeffG (the first user of G4P) for his patience and faith in trying to get it working with Peasycam a 3D orbiting camera library.
Anyway you can see my efforts at http://gui4processing.lagers.org.uk and the source code is at http://gui4processing.googlecode.com/svn/trunk/

 Hello guys! I'm not sure will it be right to ask about this here, but something works wrong in my code.  
 I just wanted to draw circles and boxes, but when I use commands
"ellipseMode(CENTER);"  or  "rectMode(CENTER);"  anywhere in the sketch the guis have scattered on pieces.
 You may take any example sketch of G4P and put there that commands. How can I fix that ???

The following code should fix the problem - make sure all your gaphics code is between the pushStyle() and popStyle() commands and that the G4P.draw() is the last command.

Code:

  void draw(){
    background(160);

    pushStyle();

    rectMode(CENTER);
    stroke(0);
    fill(255);
    strokeWeight(2);
    rect(280,280,40,40);

    popStyle();
		
    G4P.draw(); // draw the GUI
}
 

I am currently working on the next version (1.3) of GUI for Processing which will include combo boxes and I will look at a more permanent fix to the problem.

Looks great!

I would suggest, perhaps, making the mouse cursor change on mouseover, if possible.

Might help with recognition of the controls.

Awesome