NAME

       bdy - boundary curve finder

SYNOPSIS

       bdy [precision]

DESCRIPTION

       Bdy  is  a  filter used to find boundary curves in Geomview objects.  The program reads a geomview object
       from standard input and prints the resultant vector object to standard output.  Bdy finds the segments of
       the vector by first converting the given object into a polylist (See anytooff(1)).  Then,  it  finds  all
       edges  used  once  and  only  once  in  the  polylist and combines these edges into a vector object.  The
       optional precision arguement specifies the maximum distance between vertices that are  to  be  considered
       identical.  By default, it is set to 0.0, indicating that the vertices must be numerically identical.  It
       may sometimes be necessary to set it to a higher value to compensate for floating-point 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.

SEE ALSO

       geomview(1), anytooff(1), anytopl(3), bdy(3), offconsol(1), plconsol(3)

AUTHOR

       Celeste Fowler
       The Geometry Center

Geometry Center                                   June 12 1992                                          bdy(1gv)