rect
Factor handbook » UI framework » Building user interfaces » Gadget geometry » Rectangles

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rect-bounds ( rect -- loc dim )

Vocabulary
math.rectangles

Class description
A rectangle with the following slots:

loc	the top-left corner of the rectangle as an x/y pair
dim	the dimensions of the rectangle as a width/height pair

Rectangles are constructed by calling <rect> and <extent-rect>.

Definition

IN: math.rectangles

TUPLE: rect { loc initial: { 0 0 } } { dim initial: { 0 0 } } ;

Methods

USING: kernel math.rectangles ;

M: rect contains-point? [ point>rect ] dip contains-rect? ;


USING: kernel math.rectangles math.vectors ;

M: rect contains-rect? (rect-intersect) [v-] { 0 0 } = ;


USING: accessors kernel math.rectangles prettyprint.backend
prettyprint.custom ;

M: rect pprint*
    [
        \ RECT:
        [ [ loc>> ] [ dim>> ] bi [ pprint* ] bi@ ] pprint-prefix
    ] check-recursion ;


USING: kernel math.rectangles ui.gadgets.scrollers.private ;

M: rect update-scroller swap (scroll>rect) ;