kliment wrote:
It is not very difficult to model this item with the AC.

If you want to model the crumpled leather too, then you will have to ask some Russian programmers - I have seen them model every crazy curtain you could imagine!

Irrational fabric rumpling is easy, but requires a meticulous eye. This process requires NO GDL. Creating a rumpled surface requires manipulating a MESH, usually in 3D, to patiently add irregularities to a smooth, geometric mesh. Meshes have specific restrictions: they cannot overlap themselves, so to make a cushion requires mating two meshes with identical outlines but the upper mesh bulges upward and the lower mesh bulges down. Make the top mesh and bottom mesh have matching edge elevations by establishing the top mesh boundary nodes and then duplicating it. You'll also need to make ridges smooth in the mesh.

Once saved as an object, simple ROT commands applied to the 3D script provide a rotate and tilt capacity.

Most cushioned furniture is symmetrical, so you need only concern yourself with modeling one half of it.

Another trick from the ArchiGeezer's bag:

Unlike the leather surface of the lounge chair at issue, most upholstery is fabric and a little fuzzy. You emulate this by duplicating the top mesh of any cushion, elevate it by 2mm or so, and applying a partly transparent/finely perforated surface to the hovering mesh. This obscures mesh problems with a gossamer sheath. Sort of like an aging starlet's close-up.