基于ObjectARX的天津90坐标系图幅号算法及实现

A Algorithm and Achievement of Map Sheet in Tianjin90 Coordinate System Base on ObjectARX

天津90图幅号算法入手,建立了一个基于Object Arx2004的二次开发程序。通过加载ARX文件到AutoCAD环境,能够实时、准确地计算出给定范围的图幅号。为此,对实际作业中的点、线、面和图幅号对象进行抽象,设计了新的基于面的图幅号算法,实现了Auto CAD环境下方便获取天津90图幅号。

A program, base on AutoCAD ObjectArx2004, is designed in this article from a algorithm of map sheet in Tianjin 90 coordi-nate system.By loading this ARX file to the AutoCAD environment , we can calculate map sheet real -time and accurately for the giv-en range.For this, the objects of point , line, polygon and map sheet in actual operation are abstracted , and new algorithm base on given range to calculate map sheet are designed , to calculate map sheet in Tianjin 90 coordinate system in AutoCAD expediently .