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ellipses(3u) [debian man page]

ellipses(3U)						    InterViews Reference Manual 					      ellipses(3U)

NAME

       Ellipse,  S_Ellipse,  F_Ellipse,  SF_Ellipse,  S_Circle, F_Circle, SF_Circle - abstract base class and predefined subclasses for elliptical
       structured graphics

SYNOPSIS

       #include <Unidraw/Graphic/ellipses.h>

DESCRIPTION

       Ellipse is an abstract base class for elliptical structured graphics objects.  It stores geometric information that such  graphics  require
       and  provides  helper  functions  for  calculating  extents and for hit detection.  Predefined subclasses include S_Ellipse, F_Ellipse, and
       SF_Ellipse, which draw stroked, filled, and stroked-filled ellipses, respectively;  and	S_Circle,  F_Circle,  and  SF_Circle,  which  draw
       stroked,  filled,  and  stroked-filled circles, respectively.  The stroked subclasses store a PSBrush, the filled subclasses store a PSPat-
       tern, and the stroked-filled subclasses store one of each.

ELLIPSE PUBLIC OPERATIONS

       void GetOriginal(Coord& x, Coord& y, int& rx, int& ry)
	      Return the ellipse's geometry.  (x, y) defines the ellipse's center, while rx and ry  define  its  horizontal  and  vertical  radii,
	      respectively.

ELLIPSE PROTECTED OPERATIONS

       Ellipse(Coord x, Coord y, int rx, int ry, Graphic* = nil)
	      The constructor is protected to disallow instantiation of the abstract base class.  An ellipse's geometry is defined in terms of its
	      center and its horizontal and vertical radii.  The constructor also takes an optional graphic from which to obtain an initial set of
	      graphics state.

       void s_getExtent(
	   float&, float&, float&, float&, float&, Graphic*
       )

       void f_getExtent(
	   float&, float&, float&, float&, float&, Graphic*
       )

       boolean s_contains(PointObj&, Graphic*)
       boolean f_contains(PointObj&, Graphic*)
       boolean s_intersects(BoxObj&, Graphic*)
       boolean f_intersects(BoxObj&, Graphic*)
	      Helper  functions that return extent and hit detection information based on the bounding box that the ellipse defines.  s_getExtent,
	      s_contains, and s_intersects return information that accounts for the width of a brush, as would be  necessary  if  the  ellipse	is
	      stroked,	while  f_getExtent, f_contains, and f_intersects assumes that the ellipse is filled.  Subclasses can use the operations to
	      help implement their getExtent, contains, and intersects operations.

SUBCLASS PUBLIC OPERATIONS

       S_Ellipse(Coord x, Coord y, int rx, int ry, Graphic* = nil)
       F_Ellipse(Coord x, Coord y, int rx, int ry, Graphic* = nil)
       SF_Ellipse(Coord x, Coord y, int rx, int ry, Graphic* = nil)
       S_Circle(Coord x, Coord y, int radius, Graphic* = nil)
       F_Circle(Coord x, Coord y, int radius, Graphic* = nil)
       SF_Circle(Coord x, Coord y, int radius, Graphic* = nil)
	      Constructors for the various predefined Ellipse subclasses.

SEE ALSO

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

Unidraw 							  2 February 1991						      ellipses(3U)

Check Out this Related Man Page

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)
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