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June 2018 Update

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Ingy döt Net 2018-06-22 20:57:24 +00:00
parent ba8067c3b7
commit 22f33d4004
5278 changed files with 84726 additions and 14379 deletions
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58
Task/Bitmap/REXX/bitmap-1.rexx
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@ -2,36 +2,36 @@
red = '00000000 00000000 11111111'b /*define a red value. */
blue = '11111111 00000000 00000000'b /* " " blue " */
blue = 'ff 00 00'x /*another way to define a blue value.*/
image.= /*"allocate" an "array" to nulls. */
call RGBfill red /*set the entire image to red. */
call RGBset 10, 40, blue /*set a pixel to blue. */
x=10; y=40; pix=RGBget(x, y) /*get the color of a pixel. */
hexv = c2x(pix) /*get hex value of pix's color. */
binv = x2b(hexv) /* " binary " " " " */
say 'pixel' x","y '=' binv /*show the binary value of 20,50 */
bin3v = left(binv, 8) substr(binv, 9, 8) right(binv, 8)
say 'pixel' x","y '=' bin3v /*show again, but with spaces. */
@. = /*define entire @. array to nulls. */
x=10; y=40 /*set pixel's coördinates. */
call RGBfill red /*set the entire image to red. */
call RGBset x, y, blue /*set a pixel (at 10,40) to blue. */
color = RGBget(x, y) /*get the color of a pixel. */
hexV = c2x(color) /*get hex value of pixel's color. */
binV = x2b(hexV) /* " binary " " " " */
bin3V = left(binV, 8) substr(binV, 9, 8) right(binV, 8)
hex3V = left(hexV, 2) substr(hexV, 3, 2) right(hexV, 2)
xy= '(' || x","y')' /*create a handy─dandy literal for SAY.*/
say xy ' pixel in binary: ' binV /*show the binary value of 20,50 */
say xy ' pixel in binary: ' bin3V /*show again, but with spaces. */
say /*show a blank between binary and hex. */
say 'pixel' x","y '=' hexv /*show again, but in hexadecimal. */
hex3v = left(hexv, 2) substr(hexv, 3, 2) right(hexv, 2)
say 'pixel' x","y '=' hex3v /*show again, but with spaces. */
say xy ' pixel in hex: ' hexV /*show again, but in hexadecimal. */
say xy ' pixel in hex: ' hex3V /*show again, but with spaces. */
call PPMwrite 'image', 500, 500 /*create a PPM (output) file of image. */ /* ◄■■■■■■■■ not part of this task.*/
say /*show a blank. */
say 'The file image.PPM was created.' /*inform user that a file was created. */
exit /*stick a fork in it, we're all done. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
RGBfill: procedure expose image.; image.=arg(1); return
RGBfill: @.=arg(1); return /*fill image with a color.*/
RGBget: parse arg px,py; return @.px.py /*get a pixel's color. */
RGBset: parse arg px,py,p$; @.px.py=p$; return /*set " " " */
/*──────────────────────────────────────────────────────────────────────────────────────*/
RGBget: procedure expose image.; parse arg Xpixel,Ypixel
return image.Xpixel.Ypixel /*obtain and return the pixel's color. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
RGBraster: procedure expose image.; parse arg Xsize,Ysize,color; RGB=
do x=1 to Xsize; _= /*build raster one line at a time. */
do y=1 to Ysize /* " a line " pixel " " " */
_=_ || image.x.y /*append single pixel to the line. */
end /*y*/ /* [↑] all done building a line. */
RGB=RGB || _ /*append a single line to raster. */
end /*x*/ /* [↑] all done building raster. */
r return RGB /*return RGB raster to the invoker. */
/*──────────────────────────────────────────────────────────────────────────────────────*/
RGBset: procedure expose image.; parse arg Xpixel,Ypixel,color
image.Xpixel.Ypixel=color; return /*define pixel, return to the invoker. */
PPMwrite: parse arg oFN, width, height /*obtain output filename, width, height*/
oFID= oFN'.PPM'; $='9'x; #=255 /*fileID; separator; max color value.*/
call charout oFID, , 1 /*set the position of the file's output*/
call charout oFID,'P6'width || $ || height || $ || # || $ /*write hdr info.*/
do j=1 for width
do k=1 for height; call charout oFID, @.j.k
end /*k*/ /* ↑ write the PPM file, ··· */
end /*j*/ /* └───────── ··· one pixel at a time.*/
call charout oFID; return /*close the output file just to be safe*/