http://www.degrunt.org/articles/2008/06/07/xpm-xpixmap-and-pblua-nxt en-us 40 lego, mindstorms, technics, pneumatic <p>Well, while I was at it tonight, I found that the text-based interface of pbLua isn&#8217;t very user friendly in comparison to the default <span class="caps">LEGO NXT</span> interface with it&#8217;s nice icons. Not that we need icons of course, but they&#8217;re cool. ;)</p> <p>So I wrote a Lua class which can open <a href="http://en.wikipedia.org/wiki/X_PixMap"><span class="caps">XPM</span></a> images, which are stored on the FileSystem and show them anywhere on the <span class="caps">NXT</span>-screen.</p> <span class="caps">XPM</span> images are also textbased, very ideal for our purpose, albeit they don&#8217;t have a very small footprint (the below image is 160 bytes, so it&#8217;s also not <span class="caps">TOO</span> big): <pre> ! XPM2 16 7 2 1 * c #ffffff . c #000000 **..*........... *.*.*........... **..*..**.**..** *.*.*.*.*.*..*.* **..*..**.*...** ...............* .............**. </pre> <p>Luckily MacVim understands this format and allows you to see it: <img src="http://degrunt.org/files/Picture_1.png" alt="" /></p> <p>Right now this image is on my <span class="caps">NXT</span> display &#8211; inverse though, next is making the parsing a bit more flexible.</p> <p>A good thing is that <a href="http://www.pixelmator.com/">PixelMator</a> can convert to <span class="caps">XPM</span>, so no manual editing of <span class="caps">XPM</span> files ;)</p> <p>Now to see whether we can get the below image to show on the <span class="caps">NXT</span> screen (nope no colors):</p> <p><img src="http://degrunt.org/files/pblua.png" alt="" /></p> Sat, 07 Jun 2008 01:05:00 +0200 urn:uuid:0941514d-74aa-4e5d-a5e7-3bd9ebe0a820 Tom http://www.degrunt.org/articles/2008/06/07/xpm-xpixmap-and-pblua-nxt mindstorms nxt programming 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