We continue to build our in-house software environment to advance our unique structural design. The components of the software environment are diverse, but one of them is the freely extensible geometry processing-numerical analysis environment, and we are extensively using Rhinoceros, a 3D CAD system, and its plug-in, Grasshopper, in an extended manner. In this article, I hope to write mainly about the important but rarely mentioned aspects of developing and using Grasshopper plug-ins. As someone who got hooked on Rhino+Grasshopper as a student and has been doing this kind of work ever since, I hope I can help a lot of people get started.

We continue to build our in-house software environment to advance our own structural design. The components of the software environment include a wide range of commercial software and in-house FEM solvers, etc. One of these is Rhinoceros, a 3D CAD system, and its plug-in Grasshopper, which we have extended and widely We are using Rhinoceros 3D CAD and its plug-in Grasshopper extensively. There are various excellent tutorials, videos, blogs, etc., including official ones, so please refer to them for the basics. I hope to write mainly about important but rarely mentioned aspects of Grasshopper in order to extend and use Grasshopper by yourself. Those who are interested in Rhinoceros+Grasshopper 2. those who want to deepen their understanding of the internal processing of Rhinoceros+Grasshopper 3. those who want to extend Rhinoceros+Grasshopper for their own work, research, hobby, etc. 4. those who want to design and play with metamaterials. Those who want to design and play with metamaterials.