.TH CONVEX
 6 "IRIT Version 6.0" 
.SH NAME
CONVEX



 PolygonType CONVEX( PolygonType Object )

 or

 ListType CONVEX( ListType Object )

Converts non-convex polygons in Object, into convex ones. New vertices
are introduced into the polygonal data during this process. The Boolean
operations require the input to have convex polygons only (although it may
return non convex polygons...) and it automatically converts non-convex input
polygons to convex ones, using this same routine.

However, some external tools (like irit2ray and poly3d-h) require convex
polygons. This function must be used on the objects to guarantee that
only convex polygons are saved into data files for these external tools.

Example:

    CnvxObj = CONVEX( Obj );
    save( "data", CnvxObj );

converts non-convex polygons into convex ones, so that the data file can be
used by external tools requiring convex polygons.