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)
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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)