XVl Viewer

Purpose & User Intent: The XVL Viewer provides in-browser loading and inspection of XVL 3D model files. Primary users are mechanical engineers, CAD technicians, BIM coordinators, procurement specialists, and project managers who need to verify geometry, extract attributes, and audit model content without editing. Use when reviewing vendor submissions, confirming part counts, validating tolerances, or preparing data for PLM integration. The tool emphasizes rapid, non destructive viewing, metadata access, and lightweight analysis that can be performed without CAD software.
Core Logic & Features: Domain capabilities include XVL parsing, hierarchical node extraction, unit handling, and metadata extraction. Required features: in browser XVL parser that reads model geometry, materials, and attributes; spatial computations such as bounding box, centroid, and dimensions; measurement engine for distance and angle; unit conversion; metadata extraction (file name, version, author, created date). Optional/advanced features: progressive loading for large files, partial model streaming, cross file comparison, export of structure or metadata as JSON or CSV, filtering by node types, and property search. The tool prioritizes accuracy, predictable results, and privacy by keeping data client side when possible.
Inputs & Outputs: Inputs include a required XVL file input or URL, units (metric or imperial, default metric), and optional export format (JSON or CSV). Outputs include bounding_box with min and max coordinates, dimensions (length, width, height) in chosen units, centroid, volume, and optional surface_area, plus metadata such as name, version, author, and created_date. Validation ensures the file is XVL and units are supported; missing optional fields default to safe values.
Algorithms & Calculations: Parsing follows XVL specification to build a model representation, then computes an axis aligned bounding box across visible geometry, followed by centroid calculation. Distances and angles are computed from point coordinates in the selected unit system. Unit normalization uses predefined conversion factors. Extractions of metadata rely on file internal properties or embedded attributes. No editing is performed.
Error & Edge Cases: Unsupported XVL versions or corrupted files yield parse errors or partial parsing. Missing geometry yields empty or default bounding data. Very large models may trigger chunked parsing or memory limits, prompting partial results or a recommended size reduction. External data unavailability or invalid export requests are handled without failing the core viewing capability.
Industry/Region & Localization: Units support metric and imperial systems; metadata formatting follows common CAD conventions; date formats adapt to metadata when present. The tool is suitable for global engineering, procurement, and facilities teams with cross jurisdiction collaboration.
Assumptions & Exclusions: Assumes XVL compatibility and readable geometry. Not a CAD editor; does not modify source files. No rendering beyond inspection is guaranteed; rendering may rely on client hardware. Offline usage is supported when the file is loaded locally; no server-side editing or publishing is performed.