# Create avatar animation.
avatar : -skip ${1=32}

  N=$1  # Number of animation frames.

  # Create cube faces.
  -rm

  -l[]
    $HOME/work/img/avatar2.jpg
    W={w} H={h}
    -animate[0] "rotate","20,2,1,"{$W/2}","{$H/2}",0.5","380,2,1,"{$W/2}","{$H/2}",0.5",{$N+1}
    -rm[-1]
    -frame 5,5,0
    -a z
    -blur_z 0.8
  -endl

  -l[]
    $HOME/work/img/avatar2.jpg
    W={w} H={h}
    -animate[0] "rotate","30,2,1,"{$W/2}","{$H/2}",0.2","370,2,1,"{$W/2}","{$H/2}",1.5",$N
    -frame 5,5,0
    -a z
    -blur_z 1
  -endl

  -r[0,1] 100%,100%,{max(@{0,d},@{1,d})},3
  -rotate[-1] 90 -i[-2] 1 1

  --mirror[0] xy
  1

  # Render animation
  -repeat $N

    angle={180*$>/$N}
    --l[0-5] -slices $> -image6cube3d[0-5] -endl
    -r3d[-1] 0,1,1,$angle -r3d[-1] 1,0.5,0,-20 -*3d[-1] 200
    -m3d 4 # -l3d -1000,100,-10000
    400,400,1,3,-1 -object3d[-1] [-2],50%,50%,0,1,0 -rm[-2] -to_rgba[-1]
    -replace_color[-1] 0,0,-1,-1,-1,255,0,0,0,0
    -drop_shadow[-1] 10,10,8,1
    100%,100%,1,3,255 -rv[-2,-1] -compose_alpha[-2,-1]
    -w[-1] -1,-1,0

  -done
  -k[-$N--1]
  -to_rgb -round -c 0,255
  -a z,0.5 -autocrop 0,0,0,0
  -s z -r 150,150,1,3,2