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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Bitmap-Bresenhams-line-algorithm/J/bitmap-bresenhams-line-algorithm-2.j Normal file
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myimg=: 0 255 0 makeRGB 20 32 NB. 32 by 20 green image
myimg=: ((1 1 ,: 5 11) ; 255 0 0 ) drawLines myimg NB. draw red line from xy point 1 1 to 11 5
NB. Works for lists of 2 by 2 arrays each defining a line's start and end point.
Diamond=: _2]\ _2]\ 9 5 5 15 , 5 15 9 25 , 9 25 13 15 , 13 15 9 5
Square =: _2]\ _2]\ 5 5 5 25 , 5 25 13 25 , 13 25 13 5 , 13 5 5 5
viewRGB myimg=: (Diamond;255 0 0) drawLines myimg NB. draw 4 red lines to form a diamond
viewRGB myimg=: (Square;0 0 255) drawLines myimg NB. draw 4 blue lines to form a square
viewRGB (Diamond;255 0 0) drawLines (Square;0 0 255) drawLines myimg