Boxes

code:

set seed 14
set maxdepth 200
set background #333
{ h 30 sat 0.2 h -67 b 0.8 } spiral
rule spiral w 100 {
box2
{ y 0.4 rx 90 hue 1 s 0.995 b 0.999 } spiral
}
rule spiral w 100 {
box2
{ y 0.4 rx 90 hue -1 rz -90 s 0.995 b 0.999 } spiral
}
rule spiral w 100 {
box2
{ y 0.4 rx 90 hue 0 rz 90 s 0.995 b 0.995 } spiral
}
rule spiral w 3 {
{ rz 5 s 1 1 1 } spiral
{ ry 4 h 3 s 1 1 1 } spiral
}
rule box2 {
{ s 1 5 1 } box
}
rule box2 {
{ s 5 1 1 } box
}
rule box2 {
}