vertices(3u) [debian man page]

Vertices(3U)						    InterViews Reference Manual 					      Vertices(3U)

NAME

       Vertices - abstract base class for graphics defined by a set of coordinate pairs

SYNOPSIS

       #include <Unidraw/Graphic/verts.h>

DESCRIPTION

       Vertices is an abstract base class for graphics such as polygons and splines whose geometry is specified by a set of coordinate pairs.  The
       Vertices class supports vertex-related operations common to all such graphical objects and also supports extent caching.

PUBLIC OPERATIONS

       virtual ~Vertices()
	      The destructor deallocates the list of coordinate pairs stored in the graphic.

       virtual int GetOriginal(const Coord*& x, const Coord*& y)
	      Return pointers to the arrays of Coords stored internally that define the graphic's vertices.  GetOriginal's return  value  reflects
	      the size of the arrays.

       virtual boolean operator == (Vertices&)
       virtual boolean operator != (Vertices&)
	      Compare this to the given Vertices instance and return whether they (do not) store identical sets of vertices.

PROTECTED OPERATIONS

       Vertices(Graphic* = nil)
       Vertices(Coord* x, Coord* y, int count, Graphic* = nil)
	      The  constructors are protected to disallow instantiation of the abstract class.	Subclasses can pass a set of vertices to copy into
	      internal storage and an optional graphic from which to obtain an initial set of graphics state.  Vertices  itself  stores  no  addi-
	      tional graphics state over that in the Graphic base class.

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

       void f_getExtent(
	   float&, float&, float&, float&, float&, Graphic*
       )
	      Helper  functions  that return extent information based on the bounding box that the vertices define.  s_getExtent returns an extent
	      that accounts for the width of a brush, as would be necessary if the vertices defined a stroked path, while f_getExtent assumes that
	      the  vertices  define the graphic's extremities, as would be the case if the vertices defined a filled path.  These operations cache
	      the extent they compute initially.

SEE ALSO

       Graphic(3U)

Unidraw 							  2 February 1991						      Vertices(3U)

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)