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Check one potential source of the prime-meridian crash.

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jmt 2009-11-02 23:33:07 +00:00 committed by Tim Moore
parent 6593d6c065
commit ecfe4eb21b
1 changed files with 5 additions and 0 deletions
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5
src/Navaids/positioned.cxx
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@ -35,6 +35,7 @@
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/timing/timestamp.hxx>
#include <simgear/debug/logstream.hxx>
#include <simgear/structure/exception.hxx>
#include "positioned.hxx"
@ -240,6 +241,10 @@ public:
bool operator()(const FGPositionedRef& a, const FGPositionedRef& b) const
{
if (!a || !b) {
throw sg_exception("empty reference passed to DistanceOrdering");
}
double dA = distSqr(a->cart(), mPos),
dB = distSqr(b->cart(), mPos);
return dA < dB;