Nasal CDU Framework

This page is a rather technical description of the Nasal code for the framework used to implement a Boeing style CDU.

Work in progress This article or section will be worked on in the upcoming hours or days. Note: Hcc23 is working on this. Find him in the FG IRC channel to discuss this page. See history for the latest developments.

Note: Although this is meant as a documentation for the code, it obviously will (always) be (slightly) outdated. However, after reading through this page, the actual source code at https://gitorious.org/fg/fgdata/trees/master/Aircraft/Instruments-3d/cdu should not present any major surprises. Hcc23 10:07, 7 May 2011 (EDT)

Basic Classes

Line

The line class represents data to be shown on a row of the CDU's display matrix. This does not mean that a line has to span a complete row of the CDU's display matrix.

 var Line = {
   # "Static"
   hash 	byID,
   func 	registerInPropTree(path),
   func 	formatOutput(input_data),
   func 	getScreenTextVector(),
   func 	new(line_data,ptp),
   
   # "Public"
   scalar 	me.id,
   scalar 	me.ptp,
   vector 	me.used_properties,
   vector 	me.line_data,
   scalar 	me.line_string_length,
   scalar 	me.active,
   func 	me.enable(),
   func 	me.disable(),
 };