This video is a tutorial of making the Random Wavy Shade in Rhino Grasshopper. Grasshopper script contains 'Rectangle', 'Random', 'Construct Domain', 'Move', 'Surface From Points', 'Rebuild Surface', 'Divide Surface', 'Tree Statistics', 'Tree Branch', 'Cull Index', 'List Length', 'Circle', 'Project', 'Random Reduce', 'Divide Curve', 'Solid Difference', 'Extrude', 'Offset Surface', 'Pipe' components.