Twisted Polygon Tunnel

This video is a tutorial of making Twisted Polygon Tunnel in Rhino Grasshopper. The number of polygon segments can be adjusted. Grasshopper script contains ‘Construct Point’, ‘Polygon’, ‘Interpolate’, ‘Rotate’, ‘Loft’, ‘Graph mapper’, ‘Remap Numbers’, ‘Rectangle’, ‘Perp Frames’, ‘Brep / Plane’, ‘Solid Difference’ components.