splines(3U)						    InterViews Reference Manual 					       splines(3U)

NAME

       OpenBSpline,  S_OpenBSpline,  F_OpenBSpline,  SF_OpenBSpline, SFH_OpenBSpline, ClosedBSpline, S_ClosedBSpline, F_ClosedBSpline, SF_ClosedB-
       Spline, SFH_ClosedBSpline - structured graphics classes for open and closed B-splines

SYNOPSIS

       #include <Unidraw/Graphic/splines.h>

DESCRIPTION

       OpenBSpline and ClosedBSpline are Vertices subclasses that serve as abstract base classes for open and closed B-spline structured graphics.
       Predefined  subclasses  include	S_OpenBSpline,	F_OpenBSpline,	and SF_OpenBSpline, which draw stroked, filled, and stroked-filled open B-
       splines, respectively; and S_ClosedBSpline, F_ClosedBSpline, and SF_ClosedBSpline, which draw stroked, filled, and stroked-filled closed B-
       splines,  respectively.	The SFH_OpenBSpline and SFH_ClosedBSpline subclasses are identical to their SF_-prefixed counterparts, except they
       can detect hits on their control points in addition to detecting hits on their visible parts.  The stroked subclasses store a PSBrush,  the
       filled subclasses store a PSPattern, and the stroked-filled subclasses store one of each.

OPENBSPLINE PROTECTED OPERATIONS

       OpenBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
	      OpenBSpline's  constructor  is protected to prevent instantiation of the abstract base class.  The parameters are passed directly to
	      the Vertices constructor.

OPENBSPLINE SUBCLASS PUBLIC OPERATIONS

       S_OpenBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       F_OpenBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       SF_OpenBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       SFH_OpenBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
	      Constructors for the various predefined Rect subclasses.

CLOSEDBSPLINE PROTECTED OPERATIONS

       ClosedBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
	      ClosedBSpline's constructor is protected to prevent instantiation of the abstract base class.  The parameters are passed directly to
	      the Vertices constructor.

CLOSEDBSPLINE SUBCLASS PUBLIC OPERATIONS

       S_ClosedBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       F_ClosedBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       SF_ClosedBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
       SFH_ClosedBSpline(Coord* x, Coord* y, int count, Graphic* = nil)
	      Constructors for the various predefined Rect subclasses.

SEE ALSO

       Graphic(3U), Vertices(3U), geomobjs(3U), pspaint(3U)

Unidraw 							  2 February 1991						       splines(3U)