create a clean orthographic front elevation line drawing of a classic bentwood wooden armchair based on the reference images projection true orthographic front view no perspective distortion chair centered and perfectly symmetrical drawing style architectural furniture shop drawing style black vector linework only no shading no color no textures line weights outer contour thick architectural line 0 6 0 8 mm internal structural lines medium line 0 35 mm minor internal details thin line 0 18 mm geometry to show curved wooden backrest panel vertical bentwood slats forming the back support two curved armrests extending horizontally from both sides circular bentwood loop supports under the armrests slightly rounded wooden seat curved bentwood structural ring under the seat four slender wooden legs legs slightly angled outward visible structural connections between seat frame and legs composition perfect symmetry along the vertical centerline balanced proportions accurate furniture geometry output requirements clean architectural line drawing transparent background png vector ready geometry high resolution 3000 4000 px object centered reference images must be used strictly to reproduce accurate proportions and structure of the chair style reference professional furniture catalog technical drawing millwork furniture shop drawings standard
