Context Free Art

id:KZRさんの記事に触発されて弄ってみた。お手軽。

Delta INC風のはずが、DRぽくなってしまった。

コード。ちと長いのが残念。

startshape main
background {b -.8}

rule main {
 50 * {x 1 z -1 h 120} delta {h 330}
}

rule delta {
   horizontal{}
   spread {}
}
rule delta {
   virtical{}
   spread {}
}

rule horizontal {
   CUBE {}
   horizontal {z -1 x 1 y .58}
}
rule horizontal {
   CUBE {}
   horizontal {z 1 x -1 y -.58}
}
rule horizontal .5 {}

rule virtical {
   CUBE {}
   virtical {z 1 y 1}
}
rule virtical {
   CUBE {}
   virtical {z -1 y -1}
}
rule virtical .8 {}

rule spread {
   delta {z -1 y -1}
}
rule spread {
   delta {z 1 y 1}
}
rule spread {
   delta {z -1 x 1 y .58}
   delta {z -1 x -1 y .58}
}
rule spread {
   delta {z 1 x 1 y -.58}
   delta {z 1 x -1 y -.58}
}
rule spread 3 {}

rule CUBE {
   2 * {s -1 1 b .3} SIDE {h 0 sat 1}
   TOP{}
}
rule SIDE {FACE {skew 0 30 b .7}}
rule TOP {FACE [s 1.413 .816 r 135 h 0 sat 0 b .7]}
rule FACE  {SQUARE {x .5 y -.5}}