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#lang br
( require quad pict )
( provide ( all-defined-out ) )
( define ( quad->pict q )
( match-define ( list xmin ymin xmax ymax ) ( bounding-box q ) )
( define scaling-factor 3 )
( define stroke-width 0.5 )
( define margin 3 )
( unsafe-dc
( λ ( dc dx dy )
( send dc scale scaling-factor scaling-factor )
( send dc translate ( + ( - xmin ) stroke-width margin ) ( + ( - ymin ) stroke-width margin ) )
( let loop ( [ q q ] [ idx 0 ] )
;; outer edge
( send dc set-pen " slategray " stroke-width ' solid )
( send dc set-brush " white " ' solid )
( define args ( append ( quad-origin q ) ( quad-size q ) ) )
( send dc draw-rectangle . args )
;; join pt
( send dc set-pen " slategray " 0 ' solid )
( send dc set-brush ( if ( zero? idx ) " black " " red " ) ' solid )
( define pt-args ( append ( map sub1 ( to-point q ) ) ( list 2 2 ) ) )
( send dc draw-rectangle . pt-args )
( map ( λ ( qe ) ( loop qe ( add1 idx ) ) ) ( quad-elems q ) ) ) )
( * scaling-factor ( + ( - xmax xmin ) ( * stroke-width 2 ) ( * margin 2 ) ) )
( * scaling-factor ( + ( - ymax ymin ) ( * stroke-width 2 ) ( * margin 2 ) ) ) ) )
( module+ main
( define q1 ( make-quad #:size ' ( 25 25 ) ) )
( define q2 ( make-quad #:size ' ( 15 15 ) ) )
( quad->pict ( position ( attach-to q1 ' e q2 ' w ) ) ) )