http://www.degrunt.org/articles/2008/06/07/nxt-pblua-dump-screen-to-xpm en-us 40 lego, mindstorms, technics, pneumatic <p>With very little effort one can change the function DumpDisplay from the tutorial to a DumpDisplayToXPM, which will create a human-readable as well as computer readable file.</p> <pre> /* XPM */ static char *xpm_[] = { "100 64 2 1", "* c #000000", ". c #ffffff", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "....................................................................................................", "......*.....*.......................****.........*..................*...*****.*.....................", "......*.....*.......................*...*........*.................**...*.....*.....................", "****..*.**..*.....*...*..***........*...*..***..***....***..........*...****..*.**..................", "*...*.**..*.*.....*...*.....*.......****..*...*..*........*.........*.......*.**..*.................", "****..*...*.*.....*...*..****.......*...*.*****..*.....****.........*.......*.*...*.................", "*.....*...*.*.....*..**.*...*.......*...*.*......*..*.*...*.........*...*...*.*...*.................", "*.....****..*****..**.*..****.......****...***....**...****........***...***..****..................", "....................................................................................................", }; </pre> <p>Using <a href="http://www.pixelmator.com/">PixelMator</a> this can easily be translated to <span class="caps">PNG</span>:</p> <p><img src="http://degrunt.org/files/nxtscreen.png" alt="" /></p> <p>Here&#8217;s the function:</p> <pre> function DumpDisplayToXPM() print("/* XPM */") print("static char *xpm_[] = {") print("\"100 64 2 1\",") print("\"* c #000000\",") print("\". c #ffffff\",") for y=0,63 do s = "" for x=0,99 do if 0 ~= nxt.DisplayGetPixel(x,y) then s = s .. "*" else s = s .. "." end end print( "\"" .. s .. "\"," ) end print("};") end </pre> <p>Currently this function outputs to the console, which is fine for our purpose, so we can copy and paste it over to our computer.</p> <p>As said earlier, I&#8217;m using <a href="http://code.google.com/p/macvim/">MacVim</a> which supports <span class="caps">XPM</span> natively.</p> Sat, 07 Jun 2008 12:11:53 +0200 urn:uuid:9e72e95c-af11-43f1-90e4-15c51b625bd3 Tom http://www.degrunt.org/articles/2008/06/07/nxt-pblua-dump-screen-to-xpm