diff --git a/BloubWorld/.gitignore b/BloubWorld/.gitignore
index bd50a48..724e152 100644
--- a/BloubWorld/.gitignore
+++ b/BloubWorld/.gitignore
@@ -13,6 +13,7 @@ exportbloubs
 genbloubs
 movebloubs
 mergebloubs
+listbloubs
 essai
 
 core
diff --git a/BloubWorld/Makefile b/BloubWorld/Makefile
index bfc8204..03a4d92 100644
--- a/BloubWorld/Makefile
+++ b/BloubWorld/Makefile
@@ -1,6 +1,7 @@
 
 
 all:	genbloubs movebloubs exportbloubs mergebloubs	\
+	listbloubs					\
 	essai
 
 # ------------------------------------------------------------
@@ -10,8 +11,8 @@ OBJS  = bloubspace.o povstuff.o mathstuff.o
 
 # ------------------------------------------------------------
 
-essai:		essai.f90 Makefile mathstuff.o
-	gfortran $(GFOPT) $< mathstuff.o  -o $@
+essai:		essai.f90 Makefile $(OBJS)
+	gfortran $(GFOPT) $< $(OBJS)  -o $@
 
 # ------------------------------------------------------------
 
@@ -46,6 +47,9 @@ genbloubs:	genbloubs.f90 Makefile $(OBJS)
 movebloubs:	movebloubs.f90 Makefile $(OBJS)
 	gfortran $(GFOPT) $< $(OBJS)  -o $@
 
+listbloubs:	listbloubs.f90 Makefile $(OBJS)
+	gfortran $(GFOPT) $< $(OBJS)  -o $@
+
 exportbloubs:	exportbloubs.f90 Makefile $(OBJS)
 	gfortran $(GFOPT) $< $(OBJS)  -o $@
 
diff --git a/BloubWorld/README.md b/BloubWorld/README.md
index 1f0b406..d840abe 100644
--- a/BloubWorld/README.md
+++ b/BloubWorld/README.md
@@ -6,15 +6,17 @@ Le BloubWorld (que l'on appelle aussi BloubSpace) est un espace borné
 dans lequel se déplacent des **bloubs**, lesquels sont
 des sortes de particule
 munie de certaines propriétés (age, grosseur, vitesses, etc...).
-Lesquelles évoluent en fonction du temps.
+Lesquelles valeurs peuvent évoluer en fonction du temps.
 
 ## Description d'un bloub
 
+Attention cette description n'est qu'un exemple !
+
 ```
   type t_bloubs
     character(8)         :: nick
     logical              :: alive
-    integer              :: num
+    integer              :: state
     real                 :: px, py, pz
     real                 :: vx, vy, vz
     real                 :: radius
@@ -67,14 +69,18 @@ Sortie sur `stdout` de certaines propriétes des bloubs, qui seront
 reprise par un (ou des) scripts écrits en `awk`, afin de générer
 ce qu'il faut pour les différents moteurs de rendu.
 
-Bon, pour le moment, il n'y a que POVray :)
+Bon, pour le moment, il n'y a que POVray, mais Gnuplot arrivera en second.
 
 ### mergebloubs
 
-Alors, celui-ci, il n'est pas vraiment au point.
+Alors, celui-ci, il n'est pas vraiment au point. Il faut tout ré-écrire
+et faire gaffe à l'explosion quadratique.
 
 ## TODO
 
 - Concevoir un système de _bouding box_ facile à utiliser
 - Réfléchir à une politique de vieillissement des bloubs
+- le `merge` de deux bloubs est-il un acte politique ?
+
+
 
diff --git a/BloubWorld/WS/boundinboxes.dat b/BloubWorld/WS/boundinboxes.dat
new file mode 100644
index 0000000..512b626
--- /dev/null
+++ b/BloubWorld/WS/boundinboxes.dat
@@ -0,0 +1 @@
+cube  -0.35 -0.5 -0.5 5.0 5.0 5.0
\ No newline at end of file
diff --git a/BloubWorld/bloubspace.f90 b/BloubWorld/bloubspace.f90
index 2132c89..135c1a6 100644
--- a/BloubWorld/bloubspace.f90
+++ b/BloubWorld/bloubspace.f90
@@ -11,35 +11,139 @@ module bloubspace
   type t_bloubs
     character(8)         :: nick
     logical              :: alive
+    integer              :: state
     integer              :: num               ! ???
     real                 :: px, py, pz
     real                 :: vx, vy, vz
     real                 :: radius
-    integer              :: age
+    integer              :: age, agemax
   end type t_bloubs
 
+  type t_boundingbox
+    character(8)         :: id
+    real                 :: xm, ym, zm
+    real                 :: xp, yp, zp
+  end type t_boundingbox
+
   contains               ! -----------------------------------------
 
+  ! ----------------------------------------------------------------
+
+  subroutine load_boundingbox(infile, where, name)
+    character(*), intent(in)            :: infile
+    type(t_boundingbox), intent (out)   :: where
+    character(8), intent(in)            :: name
+
+    integer                   :: fd, errcode
+    character(200)            :: message
+
+    print *, "try to load ", infile
+
+    ! put some default values
+    where%id = "default"
+    where%xm = -5.0 ; where%ym = -5.0 ; where%zm = -5.0
+    where%xp =  5.0 ; where%yp =  5.0 ; where%zp =  5.0
+
+    ! and now, try to read the file
+    open (newunit=fd, file=trim(infile),               &
+          status='old', action='read',                 &
+          iostat=errcode, iomsg=message)
+    if (errcode .NE. 0) then
+      stop 'OPEN ERROR ' // message
+    endif
+
+    do
+      read(unit=fd, iostat=errcode, iomsg=message,     &
+           fmt='(A,6F8.3)') where
+      if (errcode .NE. 0) then
+         ! print *, "errcode ", errcode
+         print *, "message: ", message
+         exit
+      endif
+    enddo
+
+    close(fd)
+
+  end subroutine load_boundingbox
+
+  ! ----------------------------------------------------------------
+
   subroutine random_pv (blb)
-    type(t_bloubs), intent (inout)  :: blb
+    type(t_bloubs), intent (out)     :: blb
 
-    blb%px = 1.35 * (rand() - 0.50)
-    blb%py = 0.50 + (rand() * 0.50)
-    blb%pz = 1.90 * (rand() - 0.50)
+    blb%px = 4.33 * (rand() - 0.50)
+    blb%py = 3.33 * (rand() - 0.50)
+    blb%pz = 4.51 * (rand() - 0.50)
 
-    blb%vx = (rand() - 0.5) / 2.500
-    blb%vy = (rand() - 0.1) / 4.000
-    blb%vz = (rand() - 0.5) / 2.500
+    blb%vx = (rand()) / 2.000
+    blb%vy = (rand()) / 2.900
+    blb%vz = (rand()) / 2.000
 
-    blb%alive = .TRUE.
+    blb%state  = 0
+    blb%alive  = .TRUE.
+    blb%age    = 0
+    blb%agemax = 500
 
   end subroutine
   ! ----------------------------------------------------------------
   !        Load a blbs file into an array of bloubs
+  subroutine spit_bloubs_to_file (fname, blbarray, towrite)
 
+    character(*), intent(in)       :: fname
+    type(t_bloubs), dimension(:)   :: blbarray
+    integer, intent(in)            :: towrite
+
+    write (0, '(" spiting", (I6), "bloubs to", (A), "file")')     &
+                        towrite, trim(fname)
+
+    STOP ' : NOT IMPLEMENTED'
+
+  end subroutine
   ! ----------------------------------------------------------------
   !        Dump an array of bloubs to a blbs file.
+  ! 
+  subroutine slurp_bloubs_file_in_array (infile, blbarray, nbread)
+    character(*), intent(in)                   :: infile
+    type(t_bloubs), dimension(:), intent(out)  :: blbarray
+    integer, intent(out)                       :: nbread
 
+    character(200)      :: chaine
+    integer             :: input, errcode, idx
+    type(t_bloubs)      :: bloub
+
+    write(0, '(" slurping from file [", (A), "]")') trim(infile)
+
+    open(      newunit=input,                             &
+               file=trim(infile), form='unformatted',     &
+               iostat=errcode, iomsg=chaine,              &
+               action='read', status='old')
+    if (0 .ne. errcode) then
+      write(0, '(" errcode ", I8, 2X, A)') errcode, chaine
+      STOP " : CAN'T OPEN FILE " // trim(infile)
+    endif
+    ! write(0, '((A, I3))') " slurping from unit ", input
+
+    nbread = 0
+    idx = 1;
+    do
+      read (unit=input, iostat=errcode, iomsg=chaine) bloub
+      if (0 .ne. errcode) then
+        ! may be we got an EOF ?
+        ! write(0, '(" got errcode on read ", (I8,1X,A))') errcode, chaine
+        exit
+      endif
+      nbread = nbread + 1
+      ! print *, bloub%nick, bloub%radius
+      if (bloub%alive) then
+        blbarray(idx) = bloub
+        idx = idx + 1
+      endif
+    enddo
+
+    close(input)        ! no error checking ?
+
+   write(0, '(" read ", (I8), " bloubs")') nbread
+  end subroutine
   ! ----------------------------------------------------------------
   !        Display a bloub content to stderr
 
@@ -52,7 +156,7 @@ module bloubspace
     if (blb%alive) then
       life = "alive"
     else
-      life = "dead"
+      life = "dead "
     endif
     write (0, '(4X, A)') '+--------------- ' // message // " -------"
     write (0, '(4X,A3,A8,2X,I6,4X,A5,4X,I5)') '|  ',       &
@@ -76,37 +180,42 @@ module bloubspace
 
   end subroutine
   ! ----------------------------------------------------------------
+  ! 
+  !     detection des collisions avec les parois de la boite
+  !     laquelle boite gagnerais beaucoup a etre parametrable.
+  ! 
   subroutine bound_a_blob (blb)
     type(t_bloubs), intent (inout)  :: blb
 
-    if (5.0 .lt. blb%px) then
+    if ( 5.0 .lt. (blb%px + blb%radius)) then
       blb%vx = -1.0 * blb%vx
       blb%px = 5.0
       blb%age = blb%age + 1
     endif
-    if (-5.0 .gt. blb%px) then
+    if (-5.0 .gt. (blb%px + blb%radius)) then
       blb%vx = -1.0 * blb%vx
       blb%px = -5.0
       blb%age = blb%age + 1
     endif
 
-    if (0.0 .gt. blb%py) then
+    ! vertical axe
+    if (-4.99 .gt. (blb%py + blb%radius)) then
       blb%vy = -1.0 * blb%vy
-      blb%py = 0.0
+      blb%py = blb%radius
       blb%age = blb%age + 1
     endif
-    if (4.99 .lt. blb%py) then              !!
+    if ( 4.99 .lt. (blb%py + blb%radius)) then       ! overshoot ?
       blb%vy = -1.0 * blb%vy
       blb%age = blb%age + 1
-      blb%py = 4.99                         !!
+      blb%py = 5.0 - blb%radius                            !!
     endif
 
-    if (5.0 .lt. blb%pz) then
+    if ( 5.0 .lt. (blb%pz + blb%radius)) then
       blb%vz = -1.0 * blb%vz
       blb%age = blb%age + 1
       blb%pz = 5.0
     endif
-    if (-5.0 .gt. blb%pz) then
+    if (-5.0 .gt. (blb%pz + blb%radius)) then
       blb%vz = -1.0 * blb%vz
       blb%age = blb%age + 1
       blb%pz = -5.0
@@ -134,7 +243,14 @@ module bloubspace
 
   subroutine green_soylent (blb)
     type(t_bloubs), intent (inout)  :: blb
-    if (blb%age .gt. 8) then
+
+    if (blb%age .gt. 18) then
+      blb%alive = .FALSE.
+    endif
+
+    ! this is juste a molly-guard, don't worry
+    ! 
+    if (blb%radius .GT. 2.0) then
       blb%alive = .FALSE.
     endif
   end subroutine
diff --git a/BloubWorld/essai.f90 b/BloubWorld/essai.f90
index da7bd89..9eee578 100644
--- a/BloubWorld/essai.f90
+++ b/BloubWorld/essai.f90
@@ -1,19 +1,39 @@
 program essai
 
+  use bloubspace
   use mathstuff
   implicit none
 
-  integer                     :: foo
+  type(t_boundingbox)    :: bbox
+
+  call load_boundingbox("WS/boundinboxes.dat", bbox, "cube    ")
+
+  print *, bbox
+
+
+  ! call test_random(20)
+
+
+  STOP ': BECAUSE JOB IS DONE'
+
+! --------------------------------------------------------------
+         contains
+
+subroutine test_random(nbre)
+  integer, intent(in)         :: nbre
+  integer                     :: foo, bar
   real                        :: quux
   double precision            :: somme
 
-  call init_random_seed()
+  call init_random_seed()           ! in module 'mathstuff'
   somme = 0.0
-
-  do foo=1, 5
+  do foo=1, nbre
     quux = rand()
     somme = somme + quux
-    print *, foo, quux, somme/foo
+    bar = mod(irand(), 7)
+    print *, foo, quux, somme/foo, bar
   enddo
+end subroutine test_random
+! --------------------------------------------------------------
 
-end program
\ No newline at end of file
+end program
diff --git a/BloubWorld/genbloubs.f90 b/BloubWorld/genbloubs.f90
index 459fab4..335de8f 100644
--- a/BloubWorld/genbloubs.f90
+++ b/BloubWorld/genbloubs.f90
@@ -18,22 +18,20 @@ program genbloubs
   call getarg(2, str)
   read(str,*) nbbloubs
 
-  write (0, '(A,I6,A)') &
+  write (0, '(A,I8,A)') &
   "*** generating ", nbbloubs, " bloubs to "//trim(filename)
 
-  ! print *, "generating ", nbbloubs, "bloubs to ", filename
-
-  open(newunit=idu, file=trim(filename), form='unformatted',     &
+   open(newunit=idu, file=trim(filename),            &
+                 form='unformatted',                 &
+                 access="sequential",                &
                  action='write', status='replace')
 
   do i = 1, nbbloubs
 
     bloub%nick    = 'noname  '
     bloub%num     = i + 41
-    bloub%alive   = .TRUE.
     call random_pv(bloub)
-    bloub%radius  = 0.025
-    bloub%age     = 0
+    bloub%radius  = 0.035 + (0.03*rand())
 
     write(idu) bloub              ! no error control ?
 
diff --git a/BloubWorld/listbloubs.f90 b/BloubWorld/listbloubs.f90
new file mode 100644
index 0000000..ac6bf87
--- /dev/null
+++ b/BloubWorld/listbloubs.f90
@@ -0,0 +1,45 @@
+program movebloubs
+
+  use bloubspace
+  implicit none
+
+  integer, parameter       :: NB_MAX_BLOUBS = 200000
+
+! --------------------------------------------------------------
+  character(200)           :: infile
+  integer                  :: errcode, i
+  integer                  :: nbgot
+  type(t_bloubs), dimension(:), allocatable  :: bloubs
+
+  i = IARGC()
+  if (i .ne. 1) then
+    STOP ": BAD ARG ON COMMAND LINE"
+  endif
+  call getarg(1, infile)
+
+  write (0, '(A)') &
+  "*** listing bloubs from "//trim(infile)
+
+  allocate (bloubs(NB_MAX_BLOUBS), stat=errcode)
+  if (0 .NE. errcode) then
+    STOP " : NO ENOUGH MEMORY"
+  endif
+  do i = 1, NB_MAX_BLOUBS
+    bloubs(i)%alive = .FALSE.
+  enddo
+
+  call slurp_bloubs_file_in_array(trim(infile), bloubs, nbgot)
+  write(0, '(A,I6,1X,A)') "slurped ", nbgot, "bloubs"
+
+  do i=1,nbgot
+    write(6, '(A8, 1X, 1L, 1X, I2, 3X, F8.3, 3X, 3F8.3, 3X, 3F8.3)')  &
+          bloubs(i)%nick, bloubs(i)%alive,               &
+          bloubs(i)%state,                               &
+          bloubs(i)%radius,                              &
+          bloubs(i)%px, bloubs(i)%py, bloubs(i)%pz,      &
+          bloubs(i)%vx, bloubs(i)%vy, bloubs(i)%vz
+  enddo
+
+end program
+
+!                           \o_ 
\ No newline at end of file
diff --git a/BloubWorld/mathstuff.f90 b/BloubWorld/mathstuff.f90
index 67d49c6..a6edafd 100644
--- a/BloubWorld/mathstuff.f90
+++ b/BloubWorld/mathstuff.f90
@@ -5,21 +5,23 @@ module mathstuff
 
   ! ----------------------------------------------------------------
   !   really quick'n'dirty hack
-  !                  not working yet...
+  !                  not really tested yet...
 
   subroutine init_random_seed()
 
     integer, dimension(3) :: tarray
-    integer               :: t3
+    integer               :: t3, foo
     real                  :: dummy
     call itime(tarray)
     t3 = 3600*tarray(1) + 60*tarray(2) + tarray(3)
-    write(0, '(A,3I3,A,I6)') "sranding: ", tarray, " --> ", t3
+    ! write(0, '(A,3I3,A,I6)') "sranding: ", tarray, " --> ", t3
     call srand(t3)
 
     ! after initializing the random generator engine,
     ! you MUST use it for initializing the initializer
-    dummy = rand()
+    do foo=1, tarray(1)+5
+      dummy = rand()
+    enddo
 
   end subroutine 
 
diff --git a/BloubWorld/movebloubs.f90 b/BloubWorld/movebloubs.f90
index 4021b4a..adf2810 100644
--- a/BloubWorld/movebloubs.f90
+++ b/BloubWorld/movebloubs.f90
@@ -42,6 +42,8 @@ program movebloubs
     STOP " : CAN'T OPEN " // trim(outfile) // "FOR WRITE"
   endif
 
+  ! write(0, '("Units: ", 2I5)') inu, outu
+
   bx = 0.0;   by = 0.0;   bz = 0.0
   compteur = 0
   killed   = 0
@@ -53,18 +55,20 @@ program movebloubs
       exit
     endif
 
-    ! moving and boundingboxing
-    call move_bloub    (bloub, 0.14)
+    ! moving, morphing and boundingboxing
+    call move_bloub    (bloub, 0.185)
     call bound_a_blob  (bloub)
-    if (bloub%radius .GT. 0.052) then
-      bloub%radius = bloub%radius * 0.985
+    if (bloub%radius .GT. 0.0151) then
+      bloub%radius = bloub%radius * 0.9970
     endif
+
     call green_soylent (bloub)
     if (.NOT. bloub%alive) then
       ! write(0, '(A)') "   KILL!"
       killed = killed  + 1
-      cycle
+      ! cycle   ! ???
     endif
+
     ! calcul du barycentre
     bx = bx + dble(bloub%px)
     by = by + dble(bloub%py)
@@ -83,11 +87,11 @@ program movebloubs
   ! ok, we have read all the bloubs in the input file
 
   ! insert some fancy conditional here
-  if (compteur .LT. 1600) then
+  if (compteur .LT. 3000) then
     rnd = rand()
-    write (0, '(A,1X,F5.3)') "try to add bloubs, rnd is", rnd
-    if (rnd .LT. 0.02) then
-      call add_more_bloubs(outu, 12, 0.210)
+    write (0, '(A,1X,F9.6)') "try to add bloubs, rnd is", rnd
+    if (rnd .LT. 0.0450) then
+      call add_more_bloubs(outu, 24, 0.0990)
     endif
   endif
 
@@ -105,22 +109,23 @@ program movebloubs
 ! --------------------------------------------------------------
 contains
 
-  subroutine add_more_bloubs(un, nbre, wtf)
+  subroutine add_more_bloubs(un, nbre, rayon)
   integer, intent(in)        :: un, nbre
-  real,    intent(in)        :: wtf
+  real,    intent(in)        :: rayon
   type(t_bloubs)             :: bloub
-  integer                    :: foo
+  integer                    :: foo, count
 
-  write(0, '(A,I4,1X,A)') "adding", nbre, "bloubs"
+  count = nbre+mod(irand(), 7)
+  write(0, '(A,I4,1X,A)') "adding", count, "bloubs"
 
-  do foo=1, nbre
+  do foo=1, count
 
     bloub%nick = 'newbie  '
     call random_pv(bloub)
-    bloub%radius = wtf
+    bloub%radius = rayon + (0.15*rand())
     bloub%age   = 1
     bloub%alive = .TRUE.
-    ! call display_bloub (bloub, "new bloub")
+    bloub%num   = mod(irand(), 42)
     write(un) bloub              ! no error control ?
 
   enddo
diff --git a/BloubWorld/runme.sh b/BloubWorld/runme.sh
index e3ec7ef..6250cca 100755
--- a/BloubWorld/runme.sh
+++ b/BloubWorld/runme.sh
@@ -7,15 +7,15 @@
 
 INCFILE="WS/bloubs.inc"
 TMPPNG="/dev/shm/bloubs7.png"
-POVOPT="+Q9 +a -v -d -W1024 -H768 -WT2"
-DDIR="frames"
+POVOPT="+Q9 +a -v -d -W1600 -H1200 -WT2"
+DDIR="frames/a"
 LOGERR="log.error"
 
 # --- put the work file in ramdisk
 BLBS_IN="/dev/shm/in.blbs"
 BLBS_OUT="/dev/shm/out.blbs"
 
-NBIMG=1800
+NBIMG=3000
 
 make all
 err=$?
@@ -30,9 +30,9 @@ printf "\n#declare NbImg = %d;\n" $NBIMG > WS/nbimg.inc
 #    first, we have to make a seminal buch of bloubs
 #    --> this function need to be parametrizable
 #
-./genbloubs ${BLBS_IN}  15
+./genbloubs ${BLBS_IN}   3000
 
-for idx in $(seq 0 $NBIMG)
+for idx in $(seq 0 $((NBIMG-1)) )
 do
 
 	echo "======== run passe $idx ========="
@@ -43,45 +43,41 @@ do
 	if [ 0 -ne $? ] ; then
 		tail -15 $LOGERR
 		sleep 30
-	else
-		grep "Trace Time" $LOGERR
 	fi
 
 	td=$(date +'%F %R:%S')
 	hi=$(printf "#%05d" $idx)
-	count=$(head -1 "WS/log.nb_bloubs")
+	count=$(tail -1 "WS/log.nb_bloubs")
 
 	PNG=$(printf "%s/%05d.png" ${DDIR} $idx)
 
 	convert		${TMPPNG}			\
 			-font Courier-Bold		\
-			-pointsize 16			\
-			-fill Orange			\
-			-gravity south-east		\
-			-annotate +15+10 "$td"		\
-			-gravity south-west		\
-			-annotate +15+10 "$hi"		\
+			-pointsize 24			\
 			-fill Yellow			\
-			-pointsize 32			\
+			-gravity south-east		\
+			-annotate +25+5 "$td"		\
+			-gravity south-west		\
+			-annotate +25+5 "$hi"		\
+			-fill Yellow			\
+			-pointsize 48			\
 			-gravity north-east		\
-			-annotate +15+10 "$count"	\
+			-annotate +25+5 "$count"	\
+			-gravity north-west		\
+			-annotate +25+5 "BloubWorld"	\
 			$PNG
 
 	echo $PNG '[done]'
 
 	./movebloubs ${BLBS_IN} ${BLBS_OUT}
+	# ./mergebloubs ${BLBS_OUT} ${BLBS_IN}
 	mv ${BLBS_OUT} ${BLBS_IN}
 	echo
 
-	sleep 15
-
 done
 
 rm $LOGERR
 
-# XXX convert -delay 10 -resize 50% -colors 192	\
-# XXX			$DDIR/????[0]*.png foo.gif
-
 nice ./encode.sh
 
 
diff --git a/BloubWorld/scene.pov b/BloubWorld/scene.pov
index 47a4e91..fd5ecfa 100644
--- a/BloubWorld/scene.pov
+++ b/BloubWorld/scene.pov
@@ -11,6 +11,8 @@ global_settings {
 
 #include  "colors.inc"
 
+
+
 #include  "WS/nbimg.inc"
 
 #declare NormClock = clock / NbImg;
@@ -31,15 +33,15 @@ object	{
 
 object {
 	union {
-		plane	{ <1, 0, 0>, -23 	}
-		plane	{ <1, 0, 0>,  23	}
+		plane	{ <1, 0, 0>, -32 	}
+		plane	{ <1, 0, 0>,  32	}
 		plane	{ <0, 1, 0>, -23	}
 		plane	{ <0, 1, 0>,  23	}
 		plane	{ <0, 0, 1>,  50 	}
 
 		texture {
-			pigment { color srgb <0.195, 0.144, 0.111> } 
-			finish { phong 0.18 metallic 0.35 reflection 0.35 }
+			pigment { color srgb <0.125, 0.144, 0.111> } 
+			finish { phong 0.18 metallic 0.25 reflection 0.35 }
 			}
 		}
 	}
@@ -54,7 +56,7 @@ object {
 {
 merge	{
 	cylinder { <0, BV, 0>,   <0, -BV,   0>,   BR     }
-	cylinder { <0, 0.012, 0>, <0, -0.012, 0>,   BR*3   }
+	cylinder { <0, 0.012, 0>, <0, -0.012, 0>,   BR*4   }
 	}
 }
 
diff --git a/BloubWorld/toinc.awk b/BloubWorld/toinc.awk
index 6404fb5..e11f1b6 100644
--- a/BloubWorld/toinc.awk
+++ b/BloubWorld/toinc.awk
@@ -5,17 +5,22 @@
 
 BEGIN	{
 	count = 0
+	bx = by = bz = 0.0
 	print "// GENERATED FILE, DON'T TOUCH IT !"
 	print "#declare Bloubs = object\n{"
 	print "union\t{"
 	}
 
 	{
-	if ($5 > 6)	color = "Turquoise"
-	else		color = "Sienna"
-
+	age = $5
+	if (age < 2)		color = "Orange"
+	else if (age > 8)	color = "Gray70"
+	else			color = "Sienna"
+	bx += $1
+	by += $2
+	bz += $3
 	pigment = "pigment { color " color " }"
-	printf "\t\tsphere { <%f, %f, %f>, %f %s }\n",		\
+	printf "\tsphere { <%f, %f, %f>, %f %s }\n",	\
 			  $1, $2, $3,  $4, pigment
 	count++
 	}
@@ -23,4 +28,7 @@ BEGIN	{
 END	{
 	print "\t}  // end of union\n}\n"
 	print "#declare Nb_Bloubs = ", count, ";\n"
+	print "#declare Bary_X = ", bx/count, ";";
+	print "#declare Bary_Y = ", by/count, ";";
+	print "#declare Bary_Z = ", bz/count, ";";
 	}