The goal of this project is to automatically analyze DXF cross-section files of aluminium extrusion profiles and extract key geometric parameters. The DXF files are clean and contain only the profile cross section geometry, without dimensions, text, or annotations. The tool must process multiple DXF files in batch and export the results in a structured table. Input One or more DXF files Each DXF contains only the profile cross section Geometry consists of closed contours (outer contour and optional inner contours) Units: millimeters (mm) Geometry definitions 1. Cross section area Definition: Net aluminium cross-sectional area Calculation: Area of the outer closed contour Minus the areas of all internal closed contours Unit: mm2 2. Circumscribed circle Definition: Smallest circle that fully contains the entire profile cross section Output: Circumscribed circle diameter Unit: mm 3. Chambers Definition: Number of internal closed contours (voids) Solid profiles have 0 chambers Output For each DXF file, the tool must generate one row with: File name Cross section area [mm2] Circumscribed circle diameter [mm] Number of chambers Status (OK / error) The output must be exported as: CSV or Excel file