bdy(3gv)																  bdy(3gv)

NAME

       bdy - boundary curve finder

SYNOPSIS

       #include "bdy.h"

       Geom *Bdy(Geom *, float prec);

DESCRIPTION

       Bdy()  is  a  function which takes a geom as its argument.  The geom is then converted to a polylist, which is compressed (See plconsol(3).
       Bdy() then counts the number of edges in the polylist used once and only once, and returns a vector object  containing  these  edges.   The
       precision,  prec,  is used to determine the maximum distance between vertices which may be considered identical.  If the vertices must have
       identical coordinates, this value should be set to 0.0.	It is generally desirable to set the value somewhat higher to allow for  round-off
       error.

       The vector object is always black.

BUGS

       The  vector object is not a particularly compact representation of itself, since it contains many 2-vertex segments which could be combined
       into a longer polyline.

LINKING

       Bdy() is part of the geomutil library; see geomutil(3) for information on how to link your program with this library.

SEE ALSO

       bdy(1), geomview(1), anytopl(3), geomutil(3)

AUTHOR

       Celeste Fowler
       The Geometry Center

Geometry Center 						   June 15, 1992							  bdy(3gv)