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Missing include, fixing missing M_PI

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Using the little "PI = std::acos(-1);" trick to avoid include issues
This commit is contained in:
Klaus Basan
2018-04-04 19:48:58 +02:00
committed by Roland Winklmeier
parent da94b6c0df
commit 75c481228f
3 changed files with 18 additions and 16 deletions
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25
src/xswiftbus/navdatareference.cpp
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@@ -7,33 +7,34 @@
* contained in the LICENSE file.
*/
//! \cond PRIVATE
#include "navdatareference.h"
#include <cmath>
namespace XSwiftBus
{
//! Converts degree to radian
inline double degreeToRadian(double angle)
{
return M_PI * angle / 180.0;
static const double PI = acos(-1);
return PI * angle / 180.0;
}
//! Returns the great circle distance between to nav data references
double calculateGreatCircleDistance(const CNavDataReference &a, const CNavDataReference &b)
{
const static double c_earthRadiusKm = 6372.8;
double latRad1 = degreeToRadian(a.latitude());
double latRad2 = degreeToRadian(b.latitude());
double lonRad1 = degreeToRadian(a.longitude());
double lonRad2 = degreeToRadian(b.longitude());
const double latRad1 = degreeToRadian(a.latitude());
const double latRad2 = degreeToRadian(b.latitude());
const double lonRad1 = degreeToRadian(a.longitude());
const double lonRad2 = degreeToRadian(b.longitude());
double diffLa = latRad2 - latRad1;
double doffLo = lonRad2 - lonRad1;
const double diffLa = latRad2 - latRad1;
const double doffLo = lonRad2 - lonRad1;
double computation = asin(sqrt(sin(diffLa / 2) * sin(diffLa / 2) + cos(latRad1) * cos(latRad2) * sin(doffLo / 2) * sin(doffLo / 2)));
const double computation = asin(sqrt(sin(diffLa / 2) * sin(diffLa / 2) + cos(latRad1) * cos(latRad2) * sin(doffLo / 2) * sin(doffLo / 2)));
return 2 * c_earthRadiusKm * computation;
}
} // ns
}
//! \endcond