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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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29
Task/Bitmap-Write-a-PPM-file/Ada/bitmap-write-a-ppm-file.ada
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with Ada.Characters.Latin_1;
with Ada.Streams.Stream_IO; use Ada.Streams.Stream_IO;
with Bitmap_Store; use Bitmap_Store;
-- This package is defined in the Bitmap task.
procedure Put_PPM (File : File_Type; Picture : Image) is
use Ada.Characters.Latin_1;
Size : constant String := Integer'Image (Picture'Length (2)) & Integer'Image (Picture'Length (1));
Buffer : String (1..Picture'Length (2) * 3);
Color : Pixel;
Index : Positive;
begin
String'Write (Stream (File), "P6" & LF);
String'Write (Stream (File), Size (2..Size'Last) & LF);
String'Write (Stream (File), "255" & LF);
for I in Picture'Range (1) loop
Index := Buffer'First;
for J in Picture'Range (2) loop
Color := Picture (I, J);
Buffer (Index) := Character'Val (Color.R);
Buffer (Index + 1) := Character'Val (Color.G);
Buffer (Index + 2) := Character'Val (Color.B);
Index := Index + 3;
end loop;
String'Write (Stream (File), Buffer);
end loop;
Character'Write (Stream (File), LF);
end Put_PPM;

15
Task/Bitmap-Write-a-PPM-file/Euphoria/bitmap-write-a-ppm-file-1.ex
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constant dimx = 800, dimy = 800
constant fn = open("first.ppm","wb") -- b - binary mode
sequence color
printf(fn, "P6\n%d %d\n255\n", {dimx,dimy})
for j = 0 to dimy-1 do
for i = 0 to dimx-1 do
color = {
remainder(i,256), -- red
remainder(j,256), -- green
remainder(i*j,256) -- blue
}
puts(fn,color)
end for
end for
close(fn)

14
Task/Bitmap-Write-a-PPM-file/Euphoria/bitmap-write-a-ppm-file-2.ex
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procedure write_ppm(sequence filename, sequence image)
integer fn,dimx,dimy
dimy = length(image[1])
dimx = length(image)
fn = open(filename,"wb")
printf(fn, "P6\n%d %d\n255\n", {dimx,dimy})
for y = 1 to dimy do
for x = 1 to dimx do
puts(fn, and_bits(image[x][y], {#FF0000,#FF00,#FF}) /
{#010000,#0100,#01}) -- unpack color triple
end for
end for
close(fn)
end procedure