class MyObject{
  float dim = 30; //size of object
  float x,y,z; //location member
  float ax,ay,az; //rotational values
  float sx=1, sy=1,sz=1; //scaling factors
  boolean picked = false; //picked status
  color c_face = color(255,255,255); //color of face
  color c_edge = color(0); //color of edge
  //translation
  void move3(float xin, float yin, float zin){
    x = xin;
    y = yin;
    z = zin;
  }
  //three rotations
  void rotate3(float axin, float ayin, float azin){
    ax = axin;
    ay = ayin;
    az = azin;
  }
  //scaling
  void scale3(float sxin, float syin, float szin){
    sx = sxin;
    sy = syin;
    sz = szin;
  }
  //determine whether an object is selected
  void pick(float xp, float yp){
    if(dist(xp,yp,screenX(x,y,z),screenY(x,y,z))<10)
      picked = true;
    else
      picked = false;
  }
  //draw the object
  void draw3(){
    stroke(c_edge);
    if(picked==true) //if picked
      fill(255,0,0); // then red
    else
      fill(c_face); // else its own color
    pushMatrix();
    translate(x,y,z);
    rotateX(ax);
    rotateY(ay);
    rotateZ(az);
    scale(sx,sy,sz);
    box(dim);
    popMatrix();
  }
}