134 lines
3.7 KiB
Plaintext
134 lines
3.7 KiB
Plaintext
(
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(globals . (
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(mac . [(def mac (litmac litfn () (name params . body)
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`(def ,name (litmac litfn () ,params ,@body))))])
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(do . [(mac do body `((fn () ,@body)))])
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(let . [(mac let (var val . body)
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`((fn (,var) ,@body) ,val))])
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(when . [(mac when (cond body)
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`(if ,cond ,body ()))])
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(hline1 . [(def hline1 (fn (screen y x xmax color)
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(while (< x xmax)
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(pixel screen x y color)
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(set x (+ x 1)))))])
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(vline1 . [(def vline1 (fn (screen x y ymax color)
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(while (< y ymax)
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(pixel screen x y color)
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(set y (+ y 1)))))])
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(hline . [(def hline (fn (screen y color)
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(hline1 screen y 0 (width screen) color)))])
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(vline . [(def vline (fn (screen x color)
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(vline1 screen x 0 (height screen) color)))])
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(brline . [(def brline (fn (screen x0 y0 x1 y1 color)
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(let (x y) `(,x0 ,y0)
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(let dx (abs (- x1 x0))
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(let dy (- 0 (abs (- y1 y0)))
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(let sx (sgn (- x1 x0))
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(let sy (sgn (- y1 y0))
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(let err (+ dx dy)
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(while (not (and (= x x1)
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(= y y1)))
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(pixel screen x y color)
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(let e2 (* err 2)
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(when (>= e2 dy)
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(set x (+ x sx)))
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(when (<= e2 dx)
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(set y (+ y sy)))
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(set err
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(+ err
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(+ (if (>= e2 dy)
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dy
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0)
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(if (<= e2 dx)
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dx
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0))))))))))))))])
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(read_line . [(def read_line (fn (keyboard)
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(let str (stream)
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(let c (key keyboard)
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(while (not (or (= c 0) (= c 10)))
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(write str c)
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(set c (key keyboard))))
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str)))])
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(fill_rect . [(def fill_rect (fn (screen x1 y1 x2 y2 color)
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(while (< y1 y2)
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(hline1 screen y1 x1 x2 color)
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(set y1 (+ y1 1)))))])
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(chessboard_row . [(def chessboard_row (fn (screen px y x xmax)
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(while (< x xmax)
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(fill_rect screen
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x y
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(+ x px) (+ y px) 15)
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(set x (+ x (* px 2))))))])
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(chessboard . [(def chessboard (fn (screen px)
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(clear screen)
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(let xmax (width screen)
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(let ymax (height screen)
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(let y 0
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(while (< y ymax)
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(chessboard_row screen px y 0 xmax)
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(set y (+ y px))
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(chessboard_row screen px y px xmax)
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(set y (+ y px)))))])
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(brcircle . [(def brcircle (fn (screen cx cy r clr)
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(let x (- 0 r)
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(let y 0
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(let err (- 2 (* 2 r))
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(let continue 1
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(while continue
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(pixel screen (- cx x) (+ cy y) clr)
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(pixel screen (- cx y) (- cy x) clr)
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(pixel screen (+ cx x) (- cy y) clr)
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(pixel screen (+ cx y) (+ cy x) clr)
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(set r err)
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(when (<= r y)
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(set err
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(+ err
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(+ 1 (* 2 (set y (+ y 1))))))
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)
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(when (or (> r x) (> err y))
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(set err
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(+ err
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(+ 1 (* 2 (set x (+ x 1))))))
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)
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(set continue (< x 0)))))))))])
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(ring . [(def ring (fn(screen cx cy r w clr)
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(let rmax (+ r w)
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(while (< r rmax)
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(brcircle screen cx cy r clr)
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(set r (+ r 1))))))])
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(circle_rainbow . [(def circle_rainbow (fn(screen cx cy r w)
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(ring screen cx cy r w 37)
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(set r (+ r w))
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(ring screen cx cy r w 33)
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(set r (+ r w))
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(ring screen cx cy r w 55)
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(set r (+ r w))
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(ring screen cx cy r w 52)
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(set r (+ r w))
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(ring screen cx cy r w 47)
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(set r (+ r w))
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(ring screen cx cy r w 45)
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(set r (+ r w))
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(ring screen cx cy r w 44)
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(set r (+ r w))
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(ring screen cx cy r w 42)
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(set r (+ r w))
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(ring screen cx cy r w 41)
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(set r (+ r w))
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(ring screen cx cy r w 40)))])
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(bowboard . [(def bowboard (fn (screen side)
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(let xmax (width screen)
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(let ymax (height screen)
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(let y side
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(while (< y ymax)
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(let x side
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(while (< x xmax)
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(circle_rainbow screen x y (- side 100) 10)
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(set x (+ x (* 2 side)))))
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(set y (+ y (* 2 side)))))))))])
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(main . [(def main (fn (screen keyboard)
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(bowboard screen 128)))])
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))
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(sandbox . (circle_rainbow screen 8 1))
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)
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