import processing.opengl.*;

PImage a, b, c, d, e, f;

int s = 200;
int m = 800;
float rotationX = 0;
float rotationY = 0;
float velocityX = 0;
float velocityY = 0;
float pushBack = 400;


void setup()
{
  size(400, 400, OPENGL);
  a = loadImage("V01.jpg");
  b = loadImage("V02.jpg");
  c = loadImage("V03.jpg");
  d = loadImage("V04.jpg");
  e = loadImage("V05.jpg");
  f = loadImage("V06.jpg");
  textureMode(IMAGE);
  //smooth();    
  //initializeCube(m,s);
  //camera();
  
  camera(0.0, 0.0, 0.0, // eyeX, eyeY, eyeZ
  1.0, 1.0, 1.0, // centerX, centerY, centerZ
  1.0, 0.0, 1.0); // upX, upY, upZ
  
}

void draw()
{    
  background(0); 
  renderCube(); 
}

void renderCube() 
{
  pushMatrix();
  //translate(width/2.0, height/2.0, pushBack);
  pushMatrix();
  noFill();
  //stroke(255,10);
  //strokeWeight(0);
  noStroke();
  //smooth();
  popMatrix();
  //lights();    
  pushMatrix();
  rotateX( radians(-rotationX) );  
  rotateY( radians(270 - rotationY) );
  //rotateZ( radians(rotationX) );
  fill(200);
  //noStroke();
  textureMode(IMAGE);  
  texturedCube(m, s);
  popMatrix();  
  popMatrix();
  rotationX += velocityX;
  rotationY += velocityY;
  velocityX *= 0.95;
  velocityY *= 0.95;

  // Implements mouse control (interaction will be inverse when sphere is  upside down)
  if(mousePressed){
    velocityX += (mouseY-pmouseY) * 0.01;
    velocityY += (mouseX-pmouseX) * 0.01;
  }
}

// Generic routine to draw textured sphere
void texturedCube(float m, float s) 
{
  // +Z "front" face
  beginShape();
  texture(a);
  vertex(-s, -s,  s-1, 0, 0);
  vertex( s, -s,  s-1, m, 0);
  vertex( s,  s,  s-1, m, m);
  vertex(-s,  s,  s-1, 0, m);
  endShape();

  // -Z "back" face
  beginShape();
  texture(c);
  vertex( s, -s, -s+1, 0, 0);
  vertex(-s, -s, -s+1, m, 0);
  vertex(-s,  s, -s+1, m, m);
  vertex( s,  s, -s+1, 0, m);
  endShape();

  // +Y "bottom" face
  beginShape();
  texture(f);
  vertex(-s,  s-1,  s, 0, 0);
  vertex( s,  s-1,  s, m, 0);
  vertex( s,  s-1, -s, m, m);
  vertex(-s,  s-1, -s, 0, m);
  endShape();

  // -Y "top" face
  beginShape();
  texture(e);
  vertex(-s, -s+1, -s, 0, 0);
  vertex( s, -s+1, -s, m, 0);
  vertex( s, -s+1,  s, m, m);
  vertex(-s, -s+1,  s, 0, m);
  endShape();

  // +X "right" face
  beginShape();
  texture(b);
  vertex( s-1, -s,  s, 0, 0);
  vertex( s-1, -s, -s, m, 0);
  vertex( s-1,  s, -s, m, m);
  vertex( s-1,  s,  s, 0, m);
  endShape();

  // -X "left" face
  beginShape();
  texture(d);
  vertex(-s+1, -s, -s, 0, 0);
  vertex(-s+1, -s,  s, m, 0);
  vertex(-s+1,  s,  s, m, m);
  vertex(-s+1,  s, -s, 0, m);
  endShape();

}