1-First, using rhino script to create the original lines of pattern.
Using the practice file of midpoints and connect them to create pattern lines.
2-Using explode button to get separate the lines.
3-Split these lines into two groups, one is outside rectangle;the other is inside rectangle.
4-Scale them separately and generate planar plan from these lines.
5-Using Matrix to create another layer of pattern and orientate them into the center of the outside pattern.
Finally, we got the pattern that can be used into the former project and with some parameters to change.
