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AP_Common: location: add get alt distance method

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Iampete1 2021-09-19 00:13:07 +01:00 committed by Andrew Tridgell
parent 0549e08c5c
commit 407b70b82e
2 changed files with 15 additions and 1 deletions
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12
libraries/AP_Common/Location.cpp
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@ -244,6 +244,16 @@ ftype Location::get_distance(const struct Location &loc2) const
return norm(dlat, dlng) * LOCATION_SCALING_FACTOR;
}
// return the altitude difference in meters taking into account alt frame.
bool Location::get_alt_distance(const struct Location &loc2, ftype &distance) const
{
int32_t alt1, alt2;
if (!get_alt_cm(AltFrame::ABSOLUTE, alt1) || !loc2.get_alt_cm(AltFrame::ABSOLUTE, alt2)) {
return false;
}
distance = (alt1 - alt2) * 0.01;
return true;
}
/*
return the distance in meters in North/East plane as a N/E vector
@ -255,7 +265,7 @@ Vector2f Location::get_distance_NE(const Location &loc2) const
diff_longitude(loc2.lng,lng) * LOCATION_SCALING_FACTOR * longitude_scale((loc2.lat+lat)/2));
}
// return the distance in meters in North/East/Down plane as a N/E/D vector to loc2
// return the distance in meters in North/East/Down plane as a N/E/D vector to loc2, NOT CONSIDERING ALT FRAME!
Vector3f Location::get_distance_NED(const Location &loc2) const
{
return Vector3f((loc2.lat - lat) * LOCATION_SCALING_FACTOR,

4
libraries/AP_Common/Location.h
View File

@ -59,7 +59,11 @@ public:
// return distance in meters between two locations
ftype get_distance(const struct Location &loc2) const;
// return the altitude difference in meters taking into account alt frame.
bool get_alt_distance(const struct Location &loc2, ftype &distance) const WARN_IF_UNUSED;
// return the distance in meters in North/East/Down plane as a N/E/D vector to loc2
// NOT CONSIDERING ALT FRAME!
Vector3f get_distance_NED(const Location &loc2) const;
Vector3d get_distance_NED_double(const Location &loc2) const;