I'm trying to make a cube with a different photo on each side. I found a couple of sketches that are good starts.

This one is all fills:

[ugh, the site won't let me post links since I have under 5 posts, but this one is called RGBcube from the tutorials]

And this one is sooo close, but only shows one image:

[if you google search for "texturecube site:processing.org" you'll find this link, sorry about this]

I understand the principle of using an image for a texture(), and that texture() must be called before setting any of the vertices, but given that, how would I set a different picture for each side of the cube? Do I build 6 different rectangles and then map them to a cube?

Thanks for any hints.

So I'd be defining 6 different shapes, each with a different texture (picture), and then laying those different shapes onto this 3d cube?

I'm sure I'm just doing something dumb, but I still don't understand. I'm trying to define a new shape using beginshape inside my other shape, but having no luck.

Here's a code sample that I'm trying:

Code:

PImage tex;
PImage tex2;
float rotx = PI/4;
float roty = PI/4;

void setup() 
{
  size(1024, 768, P3D);
  tex = loadImage("pic4.jpg");
  tex2 = loadImage("pic2.jpg");
  textureMode(NORMALIZED);
  fill(255);
  stroke(color(44,48,32));
}

void draw() 
{
  background(0);
  noStroke();
  translate(width/2.0, height/2.0, -100);
  rotateX(rotx);
  rotateY(roty);
  scale(160);
  TexturedCube(tex);
  

}

void TexturedCube(PImage tex) {



  // attempting to draw a new shape that will become one of the sides of the cube
  beginShape();
  texture(tex2);
  vertex(30, 20);
  vertex(285, 20);
  vertex(285, 375);
  vertex(30, 375);
  endShape(CLOSE);


  // the main 3d cube
  beginShape(QUADS);

  texture(tex);

  // Given one texture and six faces, we can easily set up the uv coordinates
  // such that four of the faces tile "perfectly" along either u or v, but the other
  // two faces cannot be so aligned.  This code tiles "along" u, "around" the X/Z faces
  // and fudges the Y faces - the Y faces are arbitrarily aligned such that a
  // rotation along the X axis will put the "top" of either texture at the "top"
  // of the screen, but is not otherwised aligned with the X/Z faces. (This
  // just affects what type of symmetry is required if you need seamless
  // tiling all the way around the cube)

  
  
  // +Z "front" face
  vertex(-1, -1,  1, 0, 0);
  vertex( 1, -1,  1, 1, 0);
  vertex( 1,  1,  1, 1, 1);
  vertex(-1,  1,  1, 0, 1);

  // -Z "back" face
  vertex( 1, -1, -1, 0, 0);
  vertex(-1, -1, -1, 1, 0);
  vertex(-1,  1, -1, 1, 1);
  vertex( 1,  1, -1, 0, 1);

  // +Y "bottom" face
  vertex(-1,  1,  1, 0, 0);
  vertex( 1,  1,  1, 1, 0);
  vertex( 1,  1, -1, 1, 1);
  vertex(-1,  1, -1, 0, 1);

  // -Y "top" face
  vertex(-1, -1, -1, 0, 0);
  vertex( 1, -1, -1, 1, 0);
  vertex( 1, -1,  1, 1, 1);
  vertex(-1, -1,  1, 0, 1);

  // +X "right" face
  vertex( 1, -1,  1, 0, 0);
  vertex( 1, -1, -1, 1, 0);
  vertex( 1,  1, -1, 1, 1);
  vertex( 1,  1,  1, 0, 1);

  // -X "left" face
  vertex(-1, -1, -1, 0, 0);
  vertex(-1, -1,  1, 1, 0);
  vertex(-1,  1,  1, 1, 1);
  vertex(-1,  1, -1, 0, 1);

  endShape();

}

void mouseDragged() {
  float rate = 0.01;
  rotx += (pmouseY-mouseY) * rate;
  roty += (mouseX-pmouseX) * rate;
}