Hello Ppeople! Proceessing is the best for me today, and I
think forever.

 I would like to create ImageButons(http://processing.org/learning/examples/imagebutton.html) in P3D, please help.

1st: I tried ImageButon in 3d sketch - it flies around with
the other objects!

2nd was SpringGUI - there is no "ImageButton" in the lib! Or
I don't know howto?

3rd: aftter the topic "Multiple Windows"
(http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Syntax;action=display;num=1211220206)

I found that in   PFrame f; and secondApplet s;
(in my case in P3D only) - all classes (for me -ImageButton class) can be shown only in main window(P3D).
Second window I tried to use like Button panel but it
says: " w = b.width NullPointerExeption and other bad words.

PFrame f;
secondApplet s;

void setup() {
 size(320, 240);
 PFrame f = new PFrame();
}

void draw() {
  background(255,0,0);
   fill(255);
   rect(10,10,frameCount%100,10);
   s.background(0, 0, 255);
   s.fill(100);
   s.rect(10,20,frameCount%120,10);
   s.redraw();
}

public class PFrame extends Frame {
    public PFrame() {
   setBounds(100,100,400,300);
   s = new secondApplet();
   add(s);
   s.init();
   show();
    }
}
 
public class secondApplet extends PApplet {


   ImageButtons button;


    public void setup()
{
   size(400, 300);
   // Define and create image button
 PImage b = loadImage("base.gif");
 PImage r = loadImage("roll.gif");
 PImage d = loadImage("down.gif");
 int x = width/2 - b.width/2;
 int y = height/2 - b.height/2;
 int w = b.width;
 int h = b.height;
 button = new ImageButtons(x, y, w, h, b, r, d);
   noLoop();
    }

    public void draw() {
    button.update();
    button.display();
    }
}

class Button
{
 int x, y;
 int w, h;
 color basecolor, highlightcolor;
 color currentcolor;
 boolean over = false;
 boolean pressed = false;  
 
 void pressed() {
   if(over && mousePressed) {
     pressed = true;
   } else {
     pressed = false;
   }    
 }
 
 boolean overRect(int x, int y, int width, int height) {
 if (mouseX >= x && mouseX <= x+width &&
     mouseY >= y && mouseY <= y+height) {
   return true;
 } else {
   return false;
 }
}
}

class ImageButtons extends Button
{
 PImage base;
 PImage roll;
 PImage down;
 PImage currentimage;

 ImageButtons(int ix, int iy, int iw, int ih, PImage ibase, PImage iroll, PImage idown)
 {
   x = ix;
   y = iy;
   w = iw;
   h = ih;
   base = ibase;
   roll = iroll;
   down = idown;
   currentimage = base;
 }
 
 void update()
 {
   over();
   pressed();
   if(pressed) {
     currentimage = down;
   } else if (over){
     currentimage = roll;
   } else {
     currentimage = base;
   }
 }
 
 void over()
 {
   if( overRect(x, y, w, h) ) {
     over = true;
   } else {
     over = false;
   }
 }
 
 void display()
 {
   image(currentimage, x, y);
 }
}

Wich way i'm going?
Will be grateful to any assumptions.

 Thank you very much!
I'll try.

Do the pushMatrix() before your cameramove and all 3D stuff, then do popMatrix() then draw your buttons.

      antiplastic and JohnG thank you. Everything works.
I called matrix 3 times inside each other.