CGlue - connector glue

SYNOPSIS

       #include <Unidraw/cglue.h>

DESCRIPTION

       CGlue  defines  a  natural  size,  elasticity (its rate of
       stretching and shrinking relative  to  other  CGlue),  and
       deformation  limits  (total  amount  it  can  stretch  and
       shrink) in both the horizontal  and  vertical  dimensions.
       CGlue  can  be interposed between two connected connectors
       to augment their connectivity semantics; it acts like  two
       non-linear  springs, one horizontal and one vertical, con-
       necting the connectors' centers.

PUBLIC OPERATIONS

       CGlue(

           float hnat = 0, float vnat = 0,
           float hshr = 0, float hstr = 0,
           float vshr = 0, float vstr = 0,
           float hshrlim = 0, float hstrlim = 0,
           float vshrlim = 0, float vstrlim = 0
       )

       CGlue(const Shape&)
              Instantiate CGlue, providing the requisite  parame-
              ters  explicitly  or  inferring  them  from a Shape
              object.  If a shape is  supplied,  then  the  CGlue
              adopts the shape's natural size, and it assigns the
              shape's stretchability and shrinkability values  to
              its   corresponding  CGlue  elasticity  members  to
              obtain a proportionately equivalent elasticity.  It
              also assigns the shape's stretchability and shrink-
              ability values to its  deformation  limit  members.
              The parameters are described below:

              hnat,  vnat: horizontal and vertical natural sizes,
              screen units

              hshr, vshr: horizontal and vertical shrinking rate,
              constant units

              hstr,  vstr:  horizontal  and  vertical  stretching
              rate, constant units

              hshrlim, vshrlim: horizontal  and  vertical  shrink
              limit, screen units

              hstrlim,  vstrlim:  horizontal and vertical stretch
              limit, screen units

              Create a copy of this CGlue instance.

       void Rigid()
              Set all elasticity and deformation limits equal  to
              zero.

       void Interpose(const CGlue* glue)
              Change  this  instance's  attributes to reflect the
              series combination of this and glue.

SEE ALSO

       Connector(3U), Shape(3I)