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Ingy döt Net 2026-04-30 12:34:36 -04:00
parent 4bb20c9b71
commit cbaf4c4b64
12390 changed files with 318560 additions and 27248 deletions
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Task/Bitmap-Write-a-PPM-file/Ada/bitmap-write-a-ppm-file.adb Normal file
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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;