debian man page for polygons

polygons(3U)						    InterViews Reference Manual 					      polygons(3U)

NAME
       Rect, S_Rect, F_Rect, SF_Rect, Polygon, S_Polygon, F_Polygon, SF_Polygon - structured graphics classes for rectangles and polygons

SYNOPSIS
       #include <Unidraw/Graphic/polygons.h>

DESCRIPTION
       Rect and Polygon serve as abstract base classes for rectangle and polygon structured graphics.  They are derived from Graphic and Vertices,
       respectively.  Predefined subclasses include S_Rect, F_Rect, and SF_Rect,  which  draw  stroked,  filled,  and  stroked-filled  rectangles,
       respectively; and S_Polygon, F_Polygon, and SF_Polygon, which draw stroked, filled, and stroked-filled polygons, respectively.  The stroked
       subclasses store a PSBrush, the filled subclasses store a PSPattern, and the stroked-filled subclasses store one of each.

RECT PUBLIC OPERATIONS
       void GetOriginal(Coord& x0, Coord& y0, Coord& x1, Coord& y1)
	      Return the rectangle's geometry, as specified in the constructor.  (x0, y0) defines one corner of  the  rectangle,  while  (x1,  y1)
	      defines the opposing corner.

RECT PROTECTED OPERATIONS
       Rectangle(Coord x0, Coord y0, Coord x1, Coord y1, Graphic* = nil)
	      The constructor is protected to disallow instantiation of the abstract base class.  A rectangle's geometry is defined by two points,
	      corresponding to opposing corners of the rectangle.  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 rectangle defines.  s_getEx-
	      tent, s_contains, and s_intersects return information that accounts for the width of a brush, as would be necessary if the rectangle
	      is stroked, while f_getExtent, f_contains, and f_intersects assumes that the rectangle is filled.  Subclasses can use the operations
	      to help implement their getExtent, contains, and intersects operations.

RECT SUBCLASS PUBLIC OPERATIONS
       S_Rect(Coord x0, Coord y0, Coord x1, Coord y1, Graphic* = nil)
       F_Rect(Coord x0, Coord y0, Coord x1, Coord y1, Graphic* = nil)
       SF_Rect(Coord x0, Coord y0, Coord x1, Coord y1, Graphic* = nil)
	      Constructors for the various predefined Rect subclasses.

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

POLYGON SUBCLASS PUBLIC OPERATIONS
       S_Polygon(Coord* x, Coord* y, int count, Graphic* = nil)
       F_Polygon(Coord* x, Coord* y, int count, Graphic* = nil)
       SF_Polygon(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						      polygons(3U)