Civil GIS LISP-API

Since V25.2, BricsCAD LISP provides a dedicated interface for the Civil GIS 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 GIS 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 GIS LISP API functions will not be available.

As Civil GIS 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 GIS is available, the returned list will contain the string "Professional".
"RunAsLevel" setting is also respected in result list.

How to activate the Civil GIS LISP API ?

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

(vl-load-gis)

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

The Civil GIS API covers the following functional areas :