[Flightgear-devel] 3d Instrument lights helped by material emission discussion

[Dave P. <ski...@mi...>]

Thanks Roberto (and those who responded to his questions).  The examples 
and discussion was very timely for my efforts to add instrument lights 
to the pa24 panel.  I had included
setprop("/sim/model/material/instruments/factor", bus_volts*0.071428571);
tied to the nav-light switch in the pa24-electrical.nas file.  
0.071428571 = 1/14 which normalizes the factor by the max voltage to be 
between 0 and 1.  But was not sure how to use this to add instrument 
lights to the 3d instruments.  This evening, I added the appropriate 
emissive animations to each of the 3d instruments I use with the 
pa24-250.  Now the instruments all light if the master switch is on 
*and* the nav-light switch is on just like in the real Comanche.  They 
dim as the battery discharges. 

I shot several ILS approaches "at night" in the fgfs pa24-250 and am 
very pleased with the changes to the flight model and MP gage mentioned 
in my 2/22 posting as well as the instrument lights.  I loaded up the 
pa28-161 which uses some of these instruments and no functionality was 
lost in that ac by these emissive animation changes.  I will send these 
patches to David Megginson tomorrow evening so they can be put in cvs.