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Code cleanup

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This commit is contained in:
Martin Tůma 2018-02-22 18:12:47 +01:00
parent 12319fd8fd
commit 10aa7d3945
1 changed files with 5 additions and 9 deletions
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14
src/map/lambertazimuthal.cpp
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@ -1,9 +1,5 @@
#include "lambertazimuthal.h" #include "lambertazimuthal.h"
#ifndef M_PI_2
#define M_PI_2 1.57079632679489661923
#endif // M_PI_2
#define sin2(x) (sin(x) * sin(x)) #define sin2(x) (sin(x) * sin(x))
#define sqr(x) ((x) * (x)) #define sqr(x) ((x) * (x))
@ -54,8 +50,8 @@ QPointF LambertAzimuthal::ll2xy(const Coordinates &c) const
Coordinates LambertAzimuthal::xy2ll(const QPointF &p) const Coordinates LambertAzimuthal::xy2ll(const QPointF &p) const
{ {
double e4 = _es2 * _es2; double es4 = _es2 * _es2;
double e6 = _es2 * e4; double es6 = _es2 * es4;
double rho = sqrt(sqr((p.x() - _falseEasting) / _D) + sqr(_D * (p.y() double rho = sqrt(sqr((p.x() - _falseEasting) / _D) + sqr(_D * (p.y()
- _falseNorthing))); - _falseNorthing)));
@ -66,9 +62,9 @@ Coordinates LambertAzimuthal::xy2ll(const QPointF &p) const
double lon = _lon0 + atan((p.x() - _falseEasting) * sin(C) / (_D * rho double lon = _lon0 + atan((p.x() - _falseEasting) * sin(C) / (_D * rho
* cos(_beta0) * cos(C) - sqr(_D) * (p.y() - _falseNorthing) * sin(_beta0) * cos(_beta0) * cos(C) - sqr(_D) * (p.y() - _falseNorthing) * sin(_beta0)
* sin(C))); * sin(C)));
double lat = betaS + ((_es2/3.0 + 31.0*e4/180.0 + 517.0*e6/5040.0) double lat = betaS + ((_es2/3.0 + 31.0*es4/180.0 + 517.0*es6/5040.0)
* sin(2.0*betaS)) + ((23.0*e4/360.0 + 251.0*e6/3780.0) * sin(4.0*betaS)) * sin(2.0*betaS)) + ((23.0*es4/360.0 + 251.0*es6/3780.0) * sin(4.0*betaS))
+ ((761.0*e6/45360.0)*sin(6.0*betaS)); + ((761.0*es6/45360.0)*sin(6.0*betaS));
return Coordinates(rad2deg(lon), rad2deg(lat)); return Coordinates(rad2deg(lon), rad2deg(lat));
} }