void ossimSensorModelFactory::findCoarseGrid(ossimFilename& result,
const ossimFilename& geomFile)const
{
result = geomFile;
result.setFile(result.fileNoExtension()+"_ocg");
result.setExtension("dat");
if(!result.exists())
{
result = geomFile;
result.setExtension("dat");
}
// let's find a .dat file in the current directory
//
if(!result.exists())
{
result = "";
ossimDirectory directoryList(geomFile.path());
ossimFilename file;
if(directoryList.getFirst(file,
ossimDirectory::OSSIM_DIR_FILES))
{
ossimString testString = "OSSIM_DBL_GRID";
char tempBuf[14];
do
{
if(file.ext().downcase() == "dat")
{
std::ifstream in(file.c_str());
if(in)
{
in.read((char*)tempBuf, 14);
in.close();
if(ossimString(tempBuf, tempBuf+14) == testString)
{
result = file;
}
}
}
}while((directoryList.getNext(file))&&(result == ""));
}
// try to find it
}
}
void ossimSrtmElevationDatabase::createRelativePath(ossimFilename& file, const ossimGpt& gpt)const
{
int ilat = static_cast<int>(floor(gpt.latd()));
if (ilat < 0)
{
file = "S";
}
else
{
file = "N";
}
ilat = abs(ilat);
std::ostringstream os1;
os1 << std::setfill('0') << std::setw(2) <<ilat;
file += os1.str().c_str();
int ilon = static_cast<int>(floor(gpt.lond()));
if (ilon < 0)
{
file += "W";
}
else
{
file += "E";
}
ilon = abs(ilon);
std::ostringstream os2;
os2 << std::setfill('0') << std::setw(3) << ilon;
file += os2.str().c_str();
file.setExtension("hgt");
}