Nabla

code:

set seed 57

set maxdepth 10

1 * { x -10 y -10 } 5 * { x 4 } 5 * { y 4 } 5 * { z 4 } 3 * { ry -90 b 0.2 } R1

rule R1 {

dbox { z 0.6 rx 5 } R1

}

rule R1 {

dbox { z 0.5 rx -90 } R1

}

rule R1 {

dbox { z 0.6 rz 90 } R1

}

rule R1 {

dbox { z 0.6 rz -90 } R1

}

rule R1 weight 0.01 {

}

rule dbox {

{ color random s 2 2 0.5 } box

}

rule dbox weight 0.5 {

{ ry 90 s 0.5 1 1 } R1

}

rule dbox weight 0.5 {

{ rx 90 s 0.5 2 1 } R1

}