ardupilot/ArduCopter/navigation.cpp

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#include "Copter.h"
// run_nav_updates - top level call for the autopilot
// ensures calculations such as "distance to waypoint" are calculated before autopilot makes decisions
// To-Do - rename and move this function to make it's purpose more clear
void Copter::run_nav_updates(void)
{
update_super_simple_bearing(false);
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flightmode->update_navigation();
}
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// distance between vehicle and home in cm
uint32_t Copter::home_distance()
{
if (position_ok()) {
_home_distance = get_distance_cm(current_loc, ahrs.get_home());
}
return _home_distance;
}
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// The location of home in relation to the vehicle in centi-degrees
int32_t Copter::home_bearing()
{
if (position_ok()) {
_home_bearing = get_bearing_cd(current_loc, ahrs.get_home());
}
return _home_bearing;
}