I've been working on a little program and I've run into a problem. Whenever I try to map a texture to a quad it gives me this illogical error:
damm, can't insert images, well
Code:

void TexturedQuad() {
  textureMode(NORMALIZED);
  beginShape();
  texture(img);
  vertex(X2[0],Y2[0],Z2[0],0,0);
  vertex(X2[2],Y2[2],Z2[2],1,0);
  vertex(X2[3],Y2[3],Z2[3],1,1);
  vertex(X2[1],Y2[1],Z2[1],0,1);
  endShape(); 

Which gives me this error:

'You must first call texture() before using u and v coordinates with vertex()'


I'm not sure what I'm doing wrong here. I called the texture(), right? This problem probably has a very simple solution that I've overlooked. But I'm stuck on this for more then an hour already and I just can't seem to work it out.

Any help would greatly be appreciated.

Paperclip/Tim

Code:

import processing.opengl.*;

import controlP5.*;

ControlP5 controlP5;

PImage img;

void setup(){
  size(w, h, P3D);
  frameRate(25);
  noStroke();
  PImage img = loadImage("kid.jpg");


 //fs = new FullScreen(this);

  //fs.enter();

  controlP5 = new ControlP5(this);
  controlP5.addNumberbox("Y3",0,40,60,40,20);
  controlP5.addNumberbox("Y4",0,100,60,40,20);
  controlP5.addNumberbox("Y",0,40,100,40,20);
  controlP5.addNumberbox("Y2",0,100,100,40,20);
  controlP5.addSlider("bgknop",0, 200, achtergrond, 20, h-40, 100, 20);
  controlP5.addNumberbox("X",0,40,130,40,20);
  controlP5.addToggle("toggle",true,30,h-160,20,20);
  controlP5.addNumberbox("X2",0,100,130,40,20);
  controlP5.addNumberbox("Z",0,40,160,40,20);
  controlP5.addNumberbox("Z2",0,100,160,40,20);

}

void draw(){
  background(achtergrond);
  controlP5.draw();
  if(toggle==true){
    fill(255);
    stroke(30);
    noSmooth();
    rect(w/2+30, 30, w/2-60, h/2-60);
    rect(w/2+30, h/2+30, w/2-60, h/2-60);
    drawGrid();
    drawCubeGrid();
  }
  else if(toggle==false){
    redraw();
    for(int i = 0; i < 4 ; i++){
      X2[i] = X[i]+(w/2);
      Y2[i] = Z[i]+(h/2);
      Z2[i] = Y[i]+(w/2);
    }
    TexturedQuad();
  }
}



void TexturedQuad() {
  textureMode(NORMALIZED);
  beginShape();
  texture(img);
  vertex(X2[0],Y2[0],Z2[0],0,0);
  vertex(X2[2],Y2[2],Z2[2],1,0);
  vertex(X2[3],Y2[3],Z2[3],1,1);
  vertex(X2[1],Y2[1],Z2[1],0,1);
  endShape();
}
 

It works fine when I leave out the u,v coordinates. If I need to post the full code you let me know. Maybe the controlP5 library is conflicting. I really appreciate the fast response. btw maybe you already noticed from the code but I'm not really 'a programmer'.

Thanks, that did it.

* Paperclip does little happy dance

You have been really helpfull, thanks.