书本模型生成器，一键生成书本模型，批量快速摆满整个书架。可以随机控制书本大小，厚薄，倾斜度，成册摆放等。

规则矩阵 - 规则阵列工具，这个工具用来生成规则的阵列效果，可以设置横向纵向的数量和间距。比如用来摆放汽车，摆放砖块，屋顶瓦片等。this script fills a closed curve or poly object with clones which are placed on the grid. additionally you can orient clones to be parallel to the ground and looking upwards (the main goal for this featute was - making tiles on roofs)

PolyFill 选面就是通过两个对角面选择中间被覆盖的面。 PB也有这功能，速度目测没有PB的快。 代码提取于RappaTools工具。