You could model a family with a true radius.
I must ask, does the client really want to pay for bent glass?
That is VERY expensive. Which is why most curved curtainwalls are segmented.
We have some Chinese clients with deep pockets who want curved glass and mullions, unfortunatly I can't figure it out in Revit. Seems like all the posts about curved glass give your response about cost and no solutions. If anyone can point me in the right direction it would be appreciated.
Actually, this is possible, especially if the curve is one direction only, like in a cylinder or similar. You need to create a curved panel, with a parameter that controls a point, which controls the curvature of the panel. You need to make some calculations to relate this parameter with the radius of the curtain wall.