leee schrieb: > > If anyone can find some high-res pictures of _real_ HUD displays > (and not ones from flight sims, as they're obviously going to be > produced via a raster display) it should be possible to see the > LCD 'dots' (unless they LCD screen uses a ridiculously high > resolution, which doesn't really chime with the requirements for > size and ruggedisation). > > Anyway, a vector type font should be used on older first generation > HUDs for authenticity. > > LeeE
There are some low-res pictures of historical visual target displays from 1940 where you see how the numbers and lines appears. One of the problems I have with the creation of the font for the HUD is that in reality there are many different fonts now. A big change came when HUDs started to give more information than only numbers or lines. The old visual standards to display numbers can make problems when you add characters. The first target display numbers looked like what we have for the taxiway signs (FAA AC 150/5345-44*H*). This numbers were drawn by hand and the forms were following important requirements for human readability like significant differences between '2' and '5' or '5' and '6' etc. New HUDs changed the requirements because they contain now also characters. I do not know if the standards have been adapted to this new needs or if there are many different standards? If someone can point me to some recent documents I am very happy. The first generation enclosing characters I see used 'old' numbers and 'new' characters. Some HUDs did not follow any standard and it looks like they used a font as it was set by technology. When you use 'old' standard you will run into problems with readability and differences between 'l' and '1' or 'O' and '0' i.e. I am working on a font now which integrates old and new numbers. This font could be used for simulating 'visual targets displays' like they have been in past and also for modern HUDs. While the standards are not clear (for me) in the modern HUD (you see so many different letterings) I should probably draw a font which FAA will once integrate in a regulation ;-) Thanks - Yves ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Flightgear-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-devel
