lines(3u) [debian man page]

lines(3U)						    InterViews Reference Manual 						 lines(3U)

NAME

       Point, Line, MultiLine, S_MultiLine, SF_MultiLine - structured graphics classes for points, lines, and open polygons

SYNOPSIS

       #include <Unidraw/Graphic/lines.h>

DESCRIPTION

       Point  and  Line  are subclasses of Graphic that draw a point and a line, respectively.	MultiLine is a Vertices subclass that serves as an
       abstract base class for open polygons: S_MultiLine is a MultiLine subclass for stroked open polygons,  while  SF_MultiLine  is  a  stroked-
       filled open polygon.  Point, Line, and S_MultiLine store a PSBrush, while SF_MultiLine also stores a PSPattern.

POINT PUBLIC OPERATIONS

       Point(Coord x, Cord y, Graphic* = nil)
	      Construct a Point object, optionally supplying a graphic from which to obtain an initial set of graphics state.

       void GetOriginal(Coord&, Coord&)
	      Return the coordinates supplied in the constructor.

LINE PUBLIC OPERATIONS

       Line(Coord x0, Cord y0, Coord x1, Coord y1, Graphic* = nil)
	      Construct a Line object, optionally supplying a graphic from which to obtain an initial set of graphics state.

       void GetOriginal(Coord& x0, Coord& y0, Coord& x1, Coord& y1)
	      Return the line's endpoints as supplied in the constructor.

MULTILINE PROTECTED OPERATIONS

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

S_MULTILINE PUBLIC OPERATIONS
       S_MultiLine(Coord* x, Coord* y, int count, Graphic* = nil)
	      Construct an S_MultiLine object, optionally supplying a graphic from which to obtain an initial set of graphics state.

SF_MULTILINE PUBLIC OPERATIONS
       SF_MultiLine(Coord* x, Coord* y, int count, Graphic* = nil)
	      Construct an SF_MultiLine object, optionally supplying a graphic from which to obtain an initial set of graphics state.

SEE ALSO

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

Unidraw 							  2 February 1991							 lines(3U)

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)