mirror of
https://github.com/tumic0/GPXSee.git
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91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
#include <QFile>
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#include <QDebug>
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#include "common/wgs84.h"
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#include "ellipsoid.h"
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QMap<int, Ellipsoid> Ellipsoid::_ellipsoids = defaults();
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const Ellipsoid &Ellipsoid::WGS84()
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{
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static Ellipsoid e(WGS84_RADIUS, WGS84_FLATTENING);
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return e;
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}
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QMap<int, Ellipsoid> Ellipsoid::defaults()
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{
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QMap<int, Ellipsoid> map;
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map.insert(7030, WGS84());
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return map;
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}
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const Ellipsoid *Ellipsoid::ellipsoid(int id)
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{
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QMap<int, Ellipsoid>::const_iterator it(_ellipsoids.find(id));
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if (it == _ellipsoids.constEnd())
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return 0;
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else
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return &(it.value());
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}
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void Ellipsoid::loadList(const QString &path)
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{
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QFile file(path);
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bool res;
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int ln = 0;
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if (!file.open(QFile::ReadOnly)) {
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qWarning("Error opening ellipsoids file: %s: %s", qPrintable(path),
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qPrintable(file.errorString()));
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return;
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}
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while (!file.atEnd()) {
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ln++;
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QByteArray line = file.readLine();
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QList<QByteArray> list = line.split(',');
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if (list.size() != 4) {
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qWarning("%s: %d: Format error", qPrintable(path), ln);
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continue;
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}
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int id = list[1].trimmed().toInt(&res);
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if (!res) {
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qWarning("%s: %d: Invalid ellipsoid code", qPrintable(path), ln);
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continue;
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}
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double radius = list[2].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s: %d: Invalid radius", qPrintable(path), ln);
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continue;
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}
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double flattening = list[3].trimmed().toDouble(&res);
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if (!res) {
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qWarning("%s: %d: Invalid flattening", qPrintable(path), ln);
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continue;
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}
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Ellipsoid e(radius, 1.0/flattening);
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_ellipsoids.insert(id, e);
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}
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}
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Ellipsoid::Ellipsoid(double radius, double flattening)
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: _radius(radius), _flattening(flattening)
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{
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_es = 2.0 * flattening - flattening * flattening;
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_e2s = (1.0 / (1.0 - _es)) - 1.0;
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_b = radius * (1.0 - flattening);
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}
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#ifndef QT_NO_DEBUG
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QDebug operator<<(QDebug dbg, const Ellipsoid &ellipsoid)
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{
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dbg.nospace() << "Ellipsoid(" << ellipsoid.radius() << ", "
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<< 1.0 / ellipsoid.flattening() << ")";
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return dbg.space();
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}
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#endif // QT_NO_DEBUG
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