Double Twist Columns ! How to model them with the parametric add-on Sverchok for Blender

Описание: The columns of the Sagrada Familia intersect a double extrusion of star shapes, whose balanced twists in two directions cancel out the visual effect of rotation and guarantee a solid appearance to the column. It's an impressive parametric tour de force that we unveil in this video thanks to Sverchok, a Blender add-on that enables parametric design through a system of nodes, like the famous Grasshopper for Rhino.
References :
For a quick guide to the geometry of these columns : https://blog.sagradafamilia.org/en/sp...
For a more comprehensive understanding, see Mark Burry's inspiring writings on the topic.
For the formula to find the column width in the video, see : https://math.stackexchange.com/questi...