NAME

OpenBSpline, S_OpenBSpline, F_OpenBSpline, SF_OpenBSpline, SFH_OpenBSpline, ClosedBSpline, S_ClosedBSpline, F_ClosedBSpline, SF_ClosedBSpline, 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  —  Last change: 2 February 1991