void
GeoConvHelper::init(const std::string& proj,
const Position& offset,
const Boundary& orig,
const Boundary& conv,
int shift) {
myProcessing = GeoConvHelper(proj, offset, orig, conv, shift);
myFinal = myProcessing;
}
void
GeoConvHelper::computeFinal(bool lefthand) {
if (myNumLoaded == 0) {
myFinal = myProcessing;
} else {
myFinal = GeoConvHelper(
// prefer options over loaded location
myProcessing.usingGeoProjection() ? myProcessing.getProjString() : myLoaded.getProjString(),
// let offset and boundary lead back to the original coords of the loaded data
myProcessing.getOffset() + myLoaded.getOffset(),
myLoaded.getOrigBoundary(),
// the new boundary (updated during loading)
myProcessing.getConvBoundary());
}
if (lefthand) {
myFinal.myOffset.mul(1, -1);
myFinal.myConvBoundary.flipY();
}
}
bool
GeoConvHelper::init(OptionsCont& oc) {
std::string proj = "!"; // the default
double scale = oc.getFloat("proj.scale");
double rot = oc.getFloat("proj.rotate");
Position offset = Position(oc.getFloat("offset.x"), oc.getFloat("offset.y"));
bool inverse = oc.exists("proj.inverse") && oc.getBool("proj.inverse");
bool flatten = oc.exists("flatten") && oc.getBool("flatten");
if (oc.getBool("simple-projection")) {
proj = "-";
}
#ifdef PROJ_API_FILE
if (oc.getBool("proj.inverse") && oc.getString("proj") == "!") {
WRITE_ERROR("Inverse projection works only with explicit proj parameters.");
return false;
}
unsigned numProjections = oc.getBool("simple-projection") + oc.getBool("proj.utm") + oc.getBool("proj.dhdn") + oc.getBool("proj.dhdnutm") + (oc.getString("proj").length() > 1);
if (numProjections > 1) {
WRITE_ERROR("The projection method needs to be uniquely defined.");
return false;
}
if (oc.getBool("proj.utm")) {
proj = "UTM";
} else if (oc.getBool("proj.dhdn")) {
proj = "DHDN";
} else if (oc.getBool("proj.dhdnutm")) {
proj = "DHDN_UTM";
} else if (!oc.isDefault("proj")) {
proj = oc.getString("proj");
}
#endif
myProcessing = GeoConvHelper(proj, offset, Boundary(), Boundary(), scale, rot, inverse, flatten);
myFinal = myProcessing;
return true;
}