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Training, Open Source Programming Languages |
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| This is now an archive web site. Some is still relevant as at May 2026 but some is purely of historic interest. Lisa and I (Graham) are now fully retired from IT training.We have made many friends over 30 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Apache, Linux and Solaris/SunOS too. Our training notes are out of date, but with upward compatability some examples remain operational and relevant. You are welcome to make use of them "as seen", at your own risk. We now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We remain active, enjoying the times that we are retired but still healthy enough in mind and body to do things! I am also active in many other area and still look after a lot of web sites - you can find an index ((here)) |
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OpenGL / C / C++ - an example to get you started (written 2011-01-26)  A Computer Graphics application in C / C++ - that's the coding that one of my delegates is going to be doing for her "real work" after this week's course, and I found myself looking back to old times - when I used (amongst other things) to subcontract to Silicon Graphics to present courses on their GL Library - the forerunner of OpenGL.It's surprising just how quickly things come back - this graphic was a quick example that I played with, setting up an image, drawing some vectors onto it, and swapping my buffers - the Silicon Graphics system was almost always double buffered, and (joy of joys) addressable with world rather than pixel co-ordinates. The pretty pattern shown here is quite a short program - a "hello graphics world" example that I wrote to show a very simple program, and all the libraries, etc, that were needed at load time for it to work on my system (Xcode on Mac OS X). Source is [here] and includes my load line so that you - if you have a similar environment to mine - won't end up having to play "hunt the include file" and "hunt the library". (written 2011-01-26) Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles Q913 - Object Orientation and General technical topics - Computer Graphics Principles[2245] Client side (Applet) and Server side (Servlet) Graphics in Java - (2009-06-17) [2633] Why do I teach niche skills rather than mainstream? - (2010-02-13) [2758] But what will you DO with all those pictures? - (2010-05-09) [2992] Matplotlib - graphing in Python - teaching examples - (2010-10-10) [3049] Computer Graphics is fun - even if Java Applets are Old Hat - (2010-11-13) [3211] Computer Graphics in PHP - World (incoming data) to Pixel (screen) conversion - (2011-03-24) [3261] Scalable Vector Graphics - easy, low bandwidth, high resolution, dynamic. - (2011-04-23) [3262] Some SVG Elements, pixel and percent positioning - (2011-04-24) C211 - C and C based languages - Standard Libraries and other headers [2575] Sharing variables between files of code in C - extern - (2010-01-14) [3234] Your program - you just provide the filling in the sandwich - (2011-04-08) [3244] C and C++ - preprocess, compile, load, run - what each step is for - (2011-04-12) [4465] Sockets, time handling and keyboard interrupt handling in C - (2015-03-27)
Some other Articles
Jargon bustingDisassembling Python and Java - previously compiled code Python dictionaries - mutable and immutable keys and values Looking back at www.wellho.net OpenGL / C / C++ - an example to get you started Hotel star ratings - towards a better system of review Strings in C Structures v Structure Pointers in C. How, which, why. Setting up arrays in C - fixed size at compile time, or dynamic On time |
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Link to page ... 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96 at 50 posts per pageThis is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. So much so, and it's so long ago that we are retired
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