GeoCoordinateSystem LISP-API

Since V24.2, BricsCAD LISP provides a dedicated interface for the Civil GeoCoordinateSystem functionality (requires "Professional" license).
This new API part is designed for simplicity, flexibility and following the usual AutoLISP logic in naming, arguments, behaviour and results.

As Civil GeoCoordinateSystem functionality requires the BricsCAD Professional ("PRO") license level, using a lower-level license (or when disabled i.e. by RunAsLevel=0), the API module is not active, and all Civil GeoCoordinateSystem LISP API functions will not be available.

As Civil GeoCoordinateSystem development constantly continues, the BRX and LISP APIs will also expand, provide more functionality and also incorporate the ideas and feedback from third party developers.

How to verify the License Level ?

There are 2 Lisp functions available : (bcad$LicenseLevels) and (vle-licenselevel), which both use identical implementation.
If Civil GeoCoordinateSystem functionality is available, the returned list will contain the string "Professional".
"RunAsLevel" setting is also respected in result list.

How to activate the Civil GeoCoordinateSystem LISP API ?

As the LISP function set of the Civil GeoCoordinateSystem API is implemented using the BRX core system, it is required to explicitly load / activate the Civil GeoCoordinateSystem LISP interface functions (somewhat similar to required (vl-load-com) under AutoCAD AutoLISP) using :

(vl-load-geo)

If all context conditions (Professional licenses) are met, it will load the extension and return T (or NIL if the Civil GeoCoordinateSystem API part is not available).

The Civil GeoCoordinateSystem API provides the following functions :