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This commit is contained in:
Kartik K. Agaram 2021-05-07 12:11:59 -07:00
parent e42ae8219e
commit dd192dd52c
1 changed files with 19 additions and 19 deletions
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38
shell/data.limg
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@ -6,23 +6,19 @@
`(if ,cond ,body ()))])
(let . [(mac let (var val . body)
`((fn (,var) ,@body) ,val))])
(hline . [(def hline (fn (screen y color)
(hline1 screen y 0 (width screen) color)))])
(hline1 . [(def hline1 (fn (screen y x xmax color)
(while (< x xmax)
(pixel screen x y color)
(set x (+ x 1)))))])
(vline . [(def vline (fn (screen x color)
(vline1 screen x 0 (height screen) color)))])
(vline1 . [(def vline1 (fn (screen x y ymax color)
(while (< y ymax)
(pixel screen x y color)
(set y (+ y 1)))))])
(fill_rect . [(def fill_rect (fn (screen x1 y1 x2 y2 color)
(while (< y1 y2)
(hline1 screen y1 x1 x2 color)
(set y1 (+ y1 1)))))])
(brline . [(def brline (fn (screen x0 y0 x1 y1 color)
(hline . [(def hline (fn (screen y color)
(hline1 screen y 0 (width screen) color)))])
(vline . [(def vline (fn (screen x color)
(vline1 screen x 0 (height screen) color)))])
(brline . [(def brline (fn (screen x0 y0 x1 y1 color)
(let (x y) `(,x0 ,y0)
(let dx (abs (- x1 x0))
(let dy (- 0 (abs (- y1 y0)))
@ -45,14 +41,24 @@
(if (<= e2 dx)
dx
0))))))))))))))])
(read_line . [(def read_line (fn (keyboard)
(read_line . [(def read_line (fn (keyboard)
(let str (stream)
(let c (key keyboard)
(while (not (or (= c 0) (= c 10)))
(write str c)
(set c (key keyboard))))
str)))])
(chessboard . [(def chessboard (fn (screen px)
(fill_rect . [(def fill_rect (fn (screen x1 y1 x2 y2 color)
(while (< y1 y2)
(hline1 screen y1 x1 x2 color)
(set y1 (+ y1 1)))))])
(chessboard_row . [(def chessboard_row (fn (screen px y x xmax)
(while (< x xmax)
(fill_rect screen
x y
(+ x px) (+ y px) 15)
(set x (+ x (* px 2))))))])
(chessboard . [(def chessboard (fn (screen px)
(clear screen)
(let xmax (width screen)
(let ymax (height screen)
@ -62,13 +68,7 @@
(set y (+ y px))
(chessboard_row screen px y px xmax)
(set y (+ y px)))))])
(chessboard_row . [(def chessboard_row (fn (screen px y x xmax)
(while (< x xmax)
(fill_rect screen
x y
(+ x px) (+ y px) 15)
(set x (+ x (* px 2))))))])
(brcircle . [(def brcircle (fn (screen cx cy r clr)
(brcircle . [(def brcircle (fn (screen cx cy r clr)
(let x (- 0 r)
(let y 0
(let err (- 2 (* 2 r))
@ -88,7 +88,7 @@
(+ err
(+ 1 (* 2 (set x (+ x 1)))))))
(set continue (< x 0)))))))))])
(main . [(def main (fn (screen keyboard)
(main . [(def main (fn (screen keyboard)
(chessboard screen 16)))])
))
(sandbox . (brline screen 1 1 5 5 4))