3.3 DUIM-Extended-Geometry Module
<rectangle>
Abstract instantiable class
Summary
The protocol class that corresponds to a rectangle.
Superclasses
<area>
Init-keywords
min-x:- An instance of type
<real>. min-y:- An instance of type
<real>. max-x:- An instance of type
<real>. max-y:- An instance of type
<real>. points:- An instance of type
limited(<sequence>, of:<point>).
Library
duim-extended-geometry
Module
duim-extended-geometry
Description
The protocol class that corresponds to a rectangle. This is a subclass of <polygon>.
Rectangles whose edges are parallel to the coordinate axes are a special case of polygon that can be specified completely by four real numbers x1,y1,x2,y2). They are not closed under general affine transformations (although they are closed under rectilinear transformations).
Operations
The following operations are exported from the DUIM-Extended-Geometry module.
do-polygon-coordinates do-polygon-segments draw-design polygon-coordinates polygon-points rectangle? rectangle-edges rectangle-height rectangle-max-point rectangle-max-position rectangle-min-point rectangle-min-position rectangle-size rectangle-width
The following operations are exported from the DUIM-Geometry module.
See also
rectangle-max-position, page 108