Bitmap/Write a PPM file: Difference between revisions

→‎Ada: Fixed tipo an better reference
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print(bitmap.writeppmp3())
 
File(‘tmp.ppm’, ‘w’WRITE).write_bytes(bitmap.writeppmp6())</syntaxhighlight>
 
{{out}}
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0 0 0 255 255 255 0 0 0 0 0 0
</pre>
 
=={{header|Action!}}==
{{libheader|Action! Bitmap tools}}
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<syntaxhighlight lang="ada">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
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end Put_PPM;</syntaxhighlight>
The solution writes the image into an opened file. The file format might fail to work on certain [[OS]]es, because output might mangle control characters like LF, CR, FF, HT, VT etc. The OS might also limit the line length of a text file. In general it is a bad idea to mix binary and text output in one file. This solution uses ''stream I/O'', which should be as portable as possible.
 
=={{header|Aime}}==
<syntaxhighlight lang="aime">integer i, h, j, w;
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=={{header|Wren}}==
{{libheader|DOME}}
{{libheader|Wren-str}}
This takes a while to run as DOME needs to build up the file contents in string form before saving them to a PPM file. It is not currently possible to write files a line at a time.
<syntaxhighlight lang="ecmascriptwren">import "graphics" for Canvas, ImageData, Color
import "dome" for Window, Process
import "io" for FileSystem
import "./str" for Strs
 
class Bitmap {
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init() {
// write bitmap to a PPM file
var ppm = ["P6\n%(_w) %(_h)\n255\n"]
for (y in 0..._h) {
for (x in 0..._w) {
var c = pget(x, y)
ppm = ppm + .add(String.fromByte(c.r))
ppm = ppm + .add(String.fromByte(c.g))
ppm = ppm + .add(String.fromByte(c.b))
}
}
FileSystem.save("output.ppm", Strs.concat(ppm))
Process.exit(0)
}
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var Game = Bitmap.new("Bitmap - write to PPM file", 320, 320)</syntaxhighlight>
 
=={{header|XPL0}}==
<syntaxhighlight lang="xpl0">include c:\cxpl\codes; \intrinsic 'code' declarations
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