/*
       *    5
       *   /|\
       * 1/ | \4
       * /  |  \
       *|\ / \ /|
       *| /   \ |
       *|/ \ / \|
       * \  |  /
       * 2\ | /3
       *   \|/
       *    6
  
       face 6 :
       glBegin(GL_QUADS);
       glVertex3f(0.0,  0.0,  side / 2.0);
       glVertex3f(0.0,  side,  side / 2.0);
       glVertex3f(side,  side,  side / 2.0);
       glVertex3f(side,  0.0,  side / 2.0);
       glEnd();

       face 5 :
       glBegin(GL_QUADS);
       glVertex3f(0.0,  0.0,  0.0);
       glVertex3f(0.0,  side, 0.0);
       glVertex3f(side, side, 0.0);
       glVertex3f(side, 0.0,  0.0);
       glEnd();


       face 3 :
       glBegin(GL_QUADS);
       glVertex3f(side, side, 0.0);
       glVertex3f(side, side, side / 2.0);
       glVertex3f(side, 0.0,  side / 2.0);
       glVertex3f(side, 0.0,  0.0);
       glEnd();

       face 2 :
       glBegin(GL_QUADS);
       glVertex3f(0.0,  side, 0.0);
       glVertex3f(0.0,  side, side / 2.0);
       glVertex3f(side, side, side / 2.0);
       glVertex3f(side, side, 0.0);
       glEnd();


      */
      if(i == 5)
	{ // column base
	  glBegin(GL_QUADS);

	  glVertex3f(0.0,  0.0, 0.0);
	  glVertex3f(0.0,  1.0, 0.0);
	  glVertex3f(1.0,  1.0, 0.0);
	  glVertex3f(1.0,  0.0, 0.0);
	
	  glVertex3f(0.65,  0.65, 0.0);
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65, 0.0);

	  glVertex3f(0.65,  0.65, 0.0);
	  glVertex3f(0.65,  0.35, 0.0);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.65,  0.65,  -0.5);
	
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.35,  0.35,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);

	  glEnd();
	}
      else if(i == 190)
	{ // column base bis
	  glBegin(GL_QUADS);

	  glVertex3f(0.0,  1.0, 0.0);
	  glVertex3f(1.0,  1.0, 0.0);
	  glVertex3f(0.65,  0.65,  -0.25);
	  glVertex3f(0.35,  0.65,  -0.25);
	
	  glVertex3f(1.0,  1.0, 0.0);
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.65,  0.35,  -0.25);
	  glVertex3f(0.65,  0.65,  -0.25);
	
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.0, 0.0, 0.0);
	  glVertex3f(0.35,  0.35,  -0.25);
	  glVertex3f(0.65,  0.35,  -0.25);
	
	  glVertex3f(0.0, 0.0, 0.0);
	  glVertex3f(0.0, 1.0, 0.0);
	  glVertex3f(0.35,  0.65,  -0.25);
	  glVertex3f(0.35,  0.35,  -0.25);
	

	  glVertex3f(0.65,  0.65,  -0.25);
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.25);

	  glVertex3f(0.65,  0.65,  -0.25);
	  glVertex3f(0.65,  0.35,  -0.25);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.65,  0.65,  -0.5);
	
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.35,  0.35,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);

	  glEnd();
	}
      else if(i == 191 || i == 192 || i == 193)
	{ // column
	  glBegin(GL_QUADS);

	  glVertex3f(0.65,  0.65, 0.0);
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);
	  glVertex3f(0.35,  0.65, 0.0);

	  glVertex3f(0.65,  0.65, 0.0);
	  glVertex3f(0.65,  0.35, 0.0);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.65,  0.65,  -0.5);
	
	  glVertex3f(0.65,  0.65,  -0.5);
	  glVertex3f(0.65,  0.35,  -0.5);
	  glVertex3f(0.35,  0.35,  -0.5);
	  glVertex3f(0.35,  0.65,  -0.5);

	  glEnd();
	}
      else if(i == 6 || i == 7 || i == 8 || 
	      i == 83 || 
	      i == 140)
	{ // slope west -> east
	  glBegin(GL_QUADS);

	  glVertex3f(0.0,  0.0, 0.0);
	  glVertex3f(0.0,  1.0, 0.0);
	  glVertex3f(1.0,  1.0,  -0.5);
	  glVertex3f(1.0,  0.0,  -0.5);

	  glVertex3f(1.0,  1.0, 0.0);
	  glVertex3f(1.0,  0.0, 0.0);
	  glVertex3f(1.0,  0.0,  -0.5);
	  glVertex3f(1.0,  1.0,  -0.5);

	  glEnd();
	
	  glBegin(GL_TRIANGLES);

	  glVertex3f(0.0,  1.0, 0.0);
	  glVertex3f(1.0,  1.0, 0.0);
	  glVertex3f(1.0,  1.0,  -0.5);

	  glEnd();
	}
      else if(i == 9 || i == 10 || i == 11 || 
	      i == 82 ||
	      i == 34)
	{ // slope north -> south
	  glBegin(GL_QUADS);

	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.0,  0.0, 0.0);
	  glVertex3f(0.0,  1.0, -0.5);
	  glVertex3f(1.0, 1.0, -0.5);
	
	  glVertex3f(1.0, 1.0,0.0);
	  glVertex3f(1.0, 1.0, -0.5);
	  glVertex3f(0.0,  1.0, -0.5);
	  glVertex3f(0.0,  1.0,0.0);
	
	  glEnd();

	  glBegin(GL_TRIANGLES);

	  glVertex3f(1.0,  0.0, 0.0);
	  glVertex3f(1.0, 1.0,  -0.5);
	  glVertex3f(1.0, 1.0, 0.0);

	  glEnd();
	}
      else if(i == 178 || i == 228 ||
	      i == 240 || i == 242 || 
	      i == 245 ||
	      i == 255)
	{ // slope south -> north
	  glBegin(GL_QUADS);

	  glVertex3f(0.0,  1.0, 0.0);
	  glVertex3f(1.0, 1.0, 0.0);
	  glVertex3f(1.0, 0.0, -0.5);
	  glVertex3f(0.0, 0.0, -0.5);
	
	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0,0.0);
	  glVertex3f(0.0, 0.0,0.0);

	  glEnd();

	  glBegin(GL_TRIANGLES);

	  glVertex3f(1.0, 1.0, 0.0);
	  glVertex3f(1.0,  0.0, 0.0);
	  glVertex3f(1.0, 0.0,  -0.5);

	  glEnd();
	}
      else if(i == 127 ||
	      i == 179 ||
	      i == 241 || i == 243 ||
	      i == 244 ||
	      i == 253 || i == 254)
	{ // slope east -> west
	  glBegin(GL_QUADS);

	  glVertex3f(1.0, 1.0, 0.0);
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(0.0, 1.0, -0.5);
	
	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(0.0, 0.0,0.0);
	  glVertex3f(0.0, 1.0,0.0);
	  glVertex3f(0.0, 1.0, -0.5);

	  glEnd();

	  glBegin(GL_TRIANGLES);

	  glVertex3f(1.0, 1.0, 0.0);
	  glVertex3f(0.0, 1.0,  -0.5);
	  glVertex3f(0.0, 1.0,0.0);

	  glEnd();
	}
      else if(i == 130 || i == 142 || i == 143 || i == 150 || i == 151)
	{ // the west barrier
	  glBegin(GL_QUADS);

	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(0.0, 0.0,0.0);
	  glVertex3f(0.0, 1.0,0.0);
	  glVertex3f(0.0, 1.0, -0.5);
	
	  glEnd();
	}
      else if(i == 131 || i == 146 || i == 147 || i == 154 || i == 155)
	{ // the north barrier
	  glBegin(GL_QUADS);

	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.0, 0.0,0.0);
	
	  glEnd();
	}
      else if(i == 132 || i == 144 || i == 152)
	{ // the south barrier
	  glBegin(GL_QUADS);

	  glVertex3f(0.0, 1.0, -0.5);
	  glVertex3f(0.0, 1.0,0.0);
	  glVertex3f(1.0, 1.0, 0.0);
	  glVertex3f(1.0, 1.0, -0.5);
	
	  glEnd();
	}
      else if(i == 133 || i == 141 || i == 148)
	{ // the east barrier
	  glBegin(GL_QUADS);

	  glVertex3f(1.0, 0.0, -0.5);
	  glVertex3f(1.0, 1.0, -0.5);
	  glVertex3f(1.0, 1.0,0.0);
	  glVertex3f(1.0, 0.0,0.0);
	
	  glEnd();
	}
      else if(i == 134)
	{ // the west and north barrier
	  glBegin(GL_QUADS);

	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(0.0, 0.0,0.0);
	  glVertex3f(0.0, 1.0,0.0);
	  glVertex3f(0.0, 1.0, -0.5);

	  glVertex3f(0.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0, -0.5);
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(0.0, 0.0,0.0);
	
	  glEnd();
	}
     else if(i == 15 || i == 16)
	{ // the big box
	  glBegin(GL_QUADS);
	  
	  glVertex3f(0.0,  0.0,  -0.0);
	  glVertex3f(0.0,  1.0, -0.0);
	  glVertex3f(1.0, 1.0, -0.0);
	  glVertex3f(1.0, 0.0,  -0.0);

	  glVertex3f(0.0,  1.0, -0.0);
	  glVertex3f(0.0,  1.0,0.0);
	  glVertex3f(1.0, 1.0,0.0);
	  glVertex3f(1.0, 1.0, -0.0);

	  glVertex3f(1.0, 1.0, -0.0);
	  glVertex3f(1.0, 1.0,0.0);
	  glVertex3f(1.0, 0.0, 0.0);
	  glVertex3f(1.0, 0.0,  -0.0);

	  glEnd();
	} 
      else
	{ // default box
	  glBegin(GL_QUADS);
	  /* glTexCoord2f(0.5,     -0.5); */ glVertex3f(0.0,  0.0,  -0.5);
	  /* glTexCoord2f(0.0, 1.0/4.0); */ glVertex3f(0.0,  1.0, -0.5);
	  /* glTexCoord2f(0.5, 2.0/4.0); */ glVertex3f(1.0, 1.0, -0.5);
	  /* glTexCoord2f(1.0, 1.0/4.0); */ glVertex3f(1.0, 0.0,  -0.5);
 
	  /* glTexCoord2f(0.0, 1.0/4.0); */ glVertex3f(0.0,  1.0, -0.5);
	  /* glTexCoord2f(0.0, 2.0/4.0); */ glVertex3f(0.0,  1.0,0.0);
	  /* glTexCoord2f(0.5, 3.0/4.0); */ glVertex3f(1.0, 1.0,0.0);
	  /* glTexCoord2f(0.5, 2.0/4.0); */ glVertex3f(1.0, 1.0, -0.5);

	  /* glTexCoord2f(0.5, 2.0/4.0); */ glVertex3f(1.0, 1.0, -0.5);
	  /* glTexCoord2f(0.5, 3.0/4.0); */ glVertex3f(1.0, 1.0,0.0);
	  /* glTexCoord2f(1.0, 2.0/4.0); */ glVertex3f(1.0, 0.0, 0.0);
	  /* glTexCoord2f(1.0, 1.0/4.0); */ glVertex3f(1.0, 0.0,  -0.5);
	  glEnd();
	}