In order to do this sweep, make two curvy parallel lines.  One is horizontal to the ground; the other is vertical.  Then, connect the ends of these curvy lines together by using striaght lines.  Next, click the “Sweep  2″ button.  The command bar will direct you to click the two lines you want the sweep to form between (the curvy lines), and then it will tell you to click the two boundary lines (the straight lines.  Finally, press enter and the sweep will show up.

In order to put these geometries also into grasshopper, you just need to create two line elements and two curve elements.  Set these lines and curves as the corresponding lines and curves in rhino.  Then, type “Sweep 2″ and connect as shown.

When I made my curve, though, I had a glitch.  I could not tag the line elements in Rhino.  Thus, I had to go back and erase the lines elements in Rhino and re-create the line tabs in Grasshopper.  Then, when I pressed “Set As”, I had to create new connector lines in Rhino.   Finally, I needed to right click in Grasshopper and “Bake” these lines to make them exist as real elements in Rhino.


  1. 02 Michael Everett

    This looks like a very interesting button. I looks as if it is similar to lofting two curves, except there are many more possibilities, especially when it is combined with other buttons in grasshopper

  2. 04 Emily McGuire

    This looks to be a great way to make a screen. I think it would be very interesting to see this surface as a part of another form.