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diff --git a/help/rest/aa.txt b/help/rest/aa.txt new file mode 100644 index 0000000..803476c --- /dev/null +++ b/help/rest/aa.txt @@ -0,0 +1,68 @@ +.. index:: + pair: driver; AA-lib + pair: platform; Unix + +.. _aa: + +AA-lib driver +============= + +The AA driver is currently the most advanced and portable driver for XaoS. It +is based on AAlib--a high quality ASCII-art library developed by the +`AA-project`_. + +.. _`AA-project`: + http://aa-project.sourceforge.net/ + +It is a fully featured XaoS driver for text mode displays. It supports 256 +colors and the mouse where possible. + +It also has some extended features available from the UI menu: + +Attributes + + AA-lib may use character attributes to improve image quality. By default it + uses normal, dim and bold characters where possible, but you can also + enable different attributes like reversed or bold font characters. You may + also enable usage of non ansii/reversed characters if your device supports + it. + +Font + + AA-lib uses a bitmap image of the font to prepare the approximation table + used for ASCII art rendering. This bitmap is expected to be same as the one + used by your device. AAlib performs detection where possible however some + devices (like UNIX text terminals or MDA) do not support this. AAlib has + few font images compiled in, so in this case you should try to use one of + them to achieve best results. + +Inversion + + Some devices use inverse video: use this to get correct results on such + devices. + +Dithering mode + + Dithering is an way to get more exact color in approximations, by combining + more characters; but this method can produce ugly looking noise on certain + images. Use this menu to disable or tune it. + +Palette options + + By default AA driver uses the XaoS palette to render images, but it quite + often looks ugly on text displays. Here you can choose a special text + palette instead. Note that with filters enabled, the results may be rather + ugly. This function is available from the **palette menu**. + +Save text screen + + The normal save function will generate a PNG image instead of nice + ASCII-art. To save ASCII art use this function instead. It supports many + text file formats like HTML, ANSI, more, etc... It will also ask you for + font and attributes(see above). It is available from the **file menu**. + +The AA-lib driver also provides the full set of standard AA-lib's command line +options. You may use them to tune parameters like gamma correction, and so on. +See xaos -help or the AA-lib documentation for details. + +The AA driver was written by Jan Hubicka, 1997. |