Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
#include "GeoUtilities.h"
#include <QtMath>
QGeoCoordinate GeoUtilites::toGeo(const QVector3D &point, const QGeoCoordinate &origin)
{
double x = point.x();
double y = point.y();
double z = point.z();
double lat = origin.latitude()/180*M_PI;
double lon = origin.longitude()/180*M_PI;
double h = origin.altitude();
if (!qFuzzyCompare(lat, M_PI_2)) // this could (unlikely) be a problem, replace with different coordinate transformation
return QGeoCoordinate(/* lat */ qAtan(x/cos(lat)/earthRadius) + lon,
/* lon */ qAtan(y/earthRadius) + lat,
/* alt */ h + z);
else
return QGeoCoordinate(); // singularity occurred (1/cos(pi/2) = inf)
}
QVector3D GeoUtilites::toCartesian(const QGeoCoordinate &point, const QGeoCoordinate &origin)
{
double lat = point.latitude()/180*M_PI;
double lon = point.longitude()/180*M_PI;
double h = point.altitude();
double latO = origin.latitude()/180*M_PI;
double lonO = origin.longitude()/180*M_PI;
double hO = origin.altitude();
double dlon = lon-lonO;
double dlat = lat-latO;
if (!qFuzzyCompare(dlon, M_PI_2) && !qFuzzyCompare(dlat, M_PI_2))
return QVector3D(/* x */ qTan(dlon)*earthRadius*qCos(latO),
/* y */ qTan(dlat)*earthRadius,
/* z */ h - hO);
else
return QVector3D(); // singularity occurred (tan(pi/2) = inf)
}
GeoUtilites::QGeoList GeoUtilites::toGeo(const GeoUtilites::QVector3DFList &points, const QGeoCoordinate &origin)
{
GeoUtilites::QGeoList coordinates;
for (auto point : points)
coordinates.append(toGeo(point, origin));
return coordinates;
}
GeoUtilites::QVector3DFList GeoUtilites::toCartesian(const GeoUtilites::QGeoList &coordinates, const QGeoCoordinate &origin)
{
GeoUtilites::QVector3DFList points;
for (auto coordinate : coordinates )
points.append(toCartesian(coordinate, origin));
return points;
}