# group_2
# written by John Dannenhoffer

# red box
BOX       0  0  0  1  1  1
SELECT    FACE
ATTRIBUTE _color $red

# green box
BOX       1  0  0  1  1  1
SELECT    FACE
ATTRIBUTE _color $green

# blue box
BOX       2  0  0  1  1  1
SELECT    FACE
ATTRIBUTE _color $blue

# put last two bodys (green in blue) into a group
GROUP     2

# store the group (but leave copy on stack)
STORE     myGroup  0  1

# make a transparent copy of the bodys in the group
RESTORE   myGroup
ATTRIBUTE _trn  $on

# translate the (new) group up
TRANSLATE 0  1  0

# make another copy of the (new) group
STORE     myGroup  1  1

# make an opaque copy of the bodys in the group
RESTORE   myGroup  1
ATTRIBUTE _trn  $off

# translate the (newer) group up
TRANSLATE 0  1  0

# ungroup the new moved-up boxes
GROUP     -1

# make a copy of the bodys in the last group (which is only one body)
RESTORE   .

# translate it up and make it transparent
TRANSLATE 0  1  0
SELECT    FACE
ATTRIBUTE _trn  $on

END