fly/flightgear
1
0
Fork 0
Code Activity

Fix a problem where the windspeed could be negative in the property tree. Animations relying on this property could become stressed because of that.

Browse source
This commit is contained in:
ehofman 2004-03-21 10:57:44 +00:00
parent cf96deac29
commit deccb6c9a7
1 changed files with 10 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/Environment/environment.cxx
View file

@ -442,12 +442,22 @@ FGEnvironment::_recalc_hdgspd ()
wind_from_heading_deg = 90 - wind_from_heading_deg;
else
wind_from_heading_deg = 270 - wind_from_heading_deg;
#if 0
// FIXME: Windspeed can become negative with these formulas.
// which can cause problems for animations that rely
// on the windspeed property.
if (angle_rad == 0)
wind_speed_kt = fabs(wind_from_east_fps
* SG_METER_TO_NM * SG_FEET_TO_METER * 3600);
else
wind_speed_kt = (wind_from_north_fps / sin(angle_rad))
* SG_METER_TO_NM * SG_FEET_TO_METER * 3600;
#else
wind_speed_kt = sqrt(wind_from_north_fps * wind_from_north_fps +
wind_from_east_fps * wind_from_east_fps)
* SG_METER_TO_NM * SG_FEET_TO_METER * 3600;
#endif
}
void