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Use a PCS file format more compatible with the EPSG PCS database

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This commit is contained in:
Martin Tůma
2018-01-20 23:51:39 +01:00
parent 1739625896
commit 23e4e66c1b
8 changed files with 1800 additions and 3157 deletions
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141
src/map/pcs.cpp
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@ -1,4 +1,5 @@
#include <QFile>
#include "angularunits.h"
#include "pcs.h"
@ -17,15 +18,72 @@ private:
QList<PCS::Entry> PCS::_pcss;
static double parameter(const QString &str, bool *res)
static bool parameter(int key, double val, int units, Projection::Setup &setup)
{
QString field = str.trimmed();
if (field.isEmpty()) {
*res = true;
return NAN;
switch (key) {
case 8801:
case 8821:
{AngularUnits au(units);
if (au.isNull())
return false;
setup.setLongitudeOrigin(au.toDegrees(val));}
return true;
case 8802:
case 8822:
{AngularUnits au(units);
if (au.isNull())
return false;
setup.setLatitudeOrigin(au.toDegrees(val));}
return true;
case 8805:
setup.setScale(val);
return true;
case 8806:
case 8826:
{LinearUnits lu(units);
if (lu.isNull())
return false;
setup.setFalseEasting(lu.toMeters(val));}
return true;
case 8807:
case 8827:
{LinearUnits lu(units);
if (lu.isNull())
return false;
setup.setFalseNorthing(lu.toMeters(val));}
return true;
case 8823:
{AngularUnits au(units);
if (au.isNull())
return false;
setup.setStandardParallel1(au.toDegrees(val));}
return true;
case 8824:
{AngularUnits au(units);
if (au.isNull())
return false;
setup.setStandardParallel2(au.toDegrees(val));}
return true;
default:
return true;
}
}
static int projectionSetup(const QList<QByteArray> &list,
Projection::Setup &setup)
{
bool res;
for (int i = 6; i < 27; i += 3) {
int key = list[i].trimmed().toInt(&res);
double val = list[i+1].trimmed().toDouble(&res);
int un = list[i+2].trimmed().toInt(&res);
if (!parameter(key, val, un, setup))
return (i - 6)/3;
}
return field.toDouble(res);
return 0;
}
@ -51,7 +109,8 @@ void PCS::loadList(const QString &path)
{
QFile file(path);
bool res;
int ln = 0;
int ln = 0, pn;
const GCS *gcs;
if (!file.open(QFile::ReadOnly)) {
qWarning("Error opening PCS file: %s: %s", qPrintable(path),
@ -64,7 +123,7 @@ void PCS::loadList(const QString &path)
QByteArray line = file.readLine();
QList<QByteArray> list = line.split(',');
if (list.size() != 12) {
if (list.size() != 27) {
qWarning("%s: %d: Format error", qPrintable(path), ln);
continue;
}
@ -74,7 +133,7 @@ void PCS::loadList(const QString &path)
qWarning("%s: %d: Invalid PCS code", qPrintable(path), ln);
continue;
}
int gcs = list[2].trimmed().toInt(&res);
int gcsid = list[2].trimmed().toInt(&res);
if (!res) {
qWarning("%s: %d: Invalid GCS code", qPrintable(path), ln);
continue;
@ -84,58 +143,42 @@ void PCS::loadList(const QString &path)
qWarning("%s: %d: Invalid projection code", qPrintable(path), ln);
continue;
}
int transform = list[4].trimmed().toInt(&res);
int units = list[4].trimmed().toInt(&res);
if (!res) {
qWarning("%s: %d: Invalid linear units code", qPrintable(path), ln);
continue;
}
int transform = list[5].trimmed().toInt(&res);
if (!res) {
qWarning("%s: %d: Invalid coordinate transformation code",
qPrintable(path), ln);
continue;
}
double lat0 = parameter(list[5], &res);
if (!res) {
qWarning("%s: %d: Invalid latitude origin", qPrintable(path), ln);
continue;
}
double lon0 = parameter(list[6], &res);
if (!res) {
qWarning("%s: %d: Invalid longitude origin", qPrintable(path), ln);
continue;
}
double scale = parameter(list[7], &res);
if (!res) {
qWarning("%s: %d: Invalid scale", qPrintable(path), ln);
continue;
}
double fe = parameter(list[8], &res);
if (!res) {
qWarning("%s: %d: Invalid false easting", qPrintable(path), ln);
continue;
}
double fn = parameter(list[9], &res);
if (!res) {
qWarning("%s: %d: Invalid false northing", qPrintable(path), ln);
continue;
}
double sp1 = parameter(list[10], &res);
if (!res) {
qWarning("%s: %d: Invalid standard parallel #1", qPrintable(path),
ln);
continue;
}
double sp2 = parameter(list[11], &res);
if (!res) {
qWarning("%s: %d: Invalid standard parallel #2", qPrintable(path),
ln);
Projection::Setup setup;
if ((pn = projectionSetup(list, setup))) {
qWarning("%s: %d: Invalid projection parameter #%d",
qPrintable(path), ln, pn);
continue;
}
_pcss.append(Entry(id, proj, PCS(GCS::gcs(gcs), transform,
Projection::Setup(lat0, lon0, scale, fe, fn, sp1, sp2))));
if (!(gcs = GCS::gcs(gcsid))) {
qWarning("%s: %d: Unknown GCS code", qPrintable(path), ln);
continue;
}
PCS pcs(gcs, transform, setup, units);
if (!pcs.isValid())
qWarning("%s: %d: Unknown coordinate transformation/linear units code",
qPrintable(path), ln);
else
_pcss.append(Entry(id, proj, pcs));
}
}
QDebug operator<<(QDebug dbg, const PCS &pcs)
{
dbg.nospace() << "PCS(" << *pcs.gcs() << ", " << pcs.method()
<< ", " << pcs.setup() << ")";
dbg.nospace() << "PCS(" << *pcs.gcs() << ", " << pcs.method() << ", "
<< pcs.units() << ", " << pcs.setup() << ")";
return dbg.maybeSpace();
}