| Sea area boundary maps are the core basis for the declaration of sea area use rights. When drawn using AutoCAD, common problems include difficulty in generating map frames, failure of various lists to achieve dynamic adaptation, and cumbersome labeling of sea area boundary points, leading to inconsistent map completion formats, low efficiency of manual operations, and high error rates. Taking AutoCAD VBA as the secondary development tool, this study focuses on tackling four key technologies: determination of drawing base points, coordinate conversion of boundary points, dynamic adjustment of lists, and differentiated automatic plotting of sea area boundary points. It constructs a full-process automatic drawing scheme, develops a mature program with an interactive interface, and adds a 3D layered rights setting function for sea areas. While serving the author爷s own unit, the scheme has also been applied under guidance to the disposal of historical legacy sea area use projects in the Changjiang River Estuary area of Shanghai, significantly improving the drawing efficiency of sea area boundary maps and the standardization level of results, and effectively reducing the workload of technical personnel. Research shows that this technology can standardize drawing standards and improve drawing efficiency; however, it still lacks the functions of automatic description of boundary line and area calculation for scenarios with discontinuous boundary points, which requires subsequent iterations for improvement. |
