Сейчас ищут
Sketchup Extrude Curve. Смотреть видео: SKETCHUP EXTRUDE TOOLS TUTORIALS EP5 Extrude Edges By Vector Edges To Faces, Advanced Modeling WITH EXTRUDE TOOLS In SketchUp, PUSH PULLING Curved Faces In SketchUp, Sketchup Extrude Curve Face With Joint Push Pull.