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Update magvar model before using it to initialize compass error.

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david 2003-07-17 00:26:38 +00:00
parent 34e4ff4922
commit 2da219ef5e
1 changed files with 10 additions and 2 deletions
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12
src/Main/main.cxx
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@ -1778,8 +1778,16 @@ static bool fgMainInit( int argc, char **argv ) {
// kludge to initialize mag compass
// (should only be done for in-flight
// startup)
fgSetDouble("/instrumentation/heading-indicator/offset-deg",
globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES);
// update magvar model
globals->get_mag()->update( fgGetDouble("/position/longitude-deg")
* SGD_DEGREES_TO_RADIANS,
fgGetDouble("/position/latitude-deg")
* SGD_DEGREES_TO_RADIANS,
fgGetDouble("/position/altitude-ft")
* SG_FEET_TO_METER,
globals->get_time_params()->getJD() );
double var = globals->get_mag()->get_magvar() * SGD_RADIANS_TO_DEGREES;
fgSetDouble("/instrumentation/heading-indicator/offset-deg", -var);
// airport = new ssgBranch;
// airport->setName( "Airport Lighting" );