I should have mentioned that the altimeter in my local source code is connected to the
reported air pressure, rather than just an artificial conversion of the FDM's known
altitude. This is what I have in steam.cxx to find the static pressure:
#ifdef FG_WEATHERCM
sgVec3 plane_pos = { cur_fdm_state->get_Latitude(),
cur_fdm_state->get_Longitude(),
cur_fdm_state->get_Altitude() * SG_FEET_TO_METER };
double static_inhg = WeatherDatabase->get(plane_pos).AirPressure *
(0.01 / INHG_TO_MB);
#else
double static_inhg =
globals->get_environment_mgr()->getEnvironment().get_pressure_inhg();
#endif
set_lowpass ( & the_STATIC_inhg, static_inhg, dt );
It was working OK with WEATHER_CM, but not now with the new Environment.
FGEnvironment::get_pressure_inhg() is returning a ridiculously tiny number.
By the way, I have just stepped through this and I noticed that
FGEnvironmentMgr::getEnvironment returns a _copy_ of the environment object, which
involves setting up new interpolation tables. Wouldn't it be more appropriate to
return a reference to it?
- Julian
Julian Foad wrote:
>
> The altimeter seems to be broken at the moment. /steam/altitude-ft shows a huge,
>unchanging, random value for me, and the instrument (on more than one aircraft) just
>stays at zero.
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