Arguments

tinEname  (ename or vla-object)  the TinSurface entity to query

Return

(list of 3D point lists)  the list of boundary polygons of the TinSurface entity, or NIL

Example

(tin:getBorders tin)
(((40.0 70.0 10.0) (70.0 60.0 3.0) (75.0 45.0 5.0) (80.0 20.0 7.0) (10.0 10.0 2.0) (10.0 80.0 5.0) (40.0 70.0 10.0)))
=> this list contains 1 border polygon

Remarks

There can be more than only 1 polygon for a TinSurface - do not assume that only 1 polygon is always returned !