ossimProjection*
ossimNitfProjectionFactory::createProjection(const ossimFilename& filename,
ossim_uint32 entryIdx)const
{
static const char MODULE[]="ossimNitfProjectionFactory::createProjection";
if (traceDebug())
{
ossimNotify(ossimNotifyLevel_DEBUG)
<< MODULE << " DEBUG:"
<< "\nfilename: " << filename
<< "\nentryIdx: " << entryIdx
<< std::endl;
}
// See if there is an external geomtry.
ossimProjection* result = createProjectionFromGeometryFile(filename,
entryIdx);
if (result)
{
return result;
}
if(!isNitf(filename))
{
return result; // result is NULL
}
ossimRefPtr<ossimNitfFile> nitf = new ossimNitfFile();
if (!nitf->parseFile(filename))
{
return result; // result is NULL
}
long imageIndex = static_cast<long>(entryIdx);
if ( imageIndex > (nitf->getHeader()->getNumberOfImages()-1) )
{
return result;
}
ossimRefPtr<ossimNitfImageHeader> imageHeader = nitf->getNewImageHeader(imageIndex);
{
if (!imageHeader)
{
return result;
}
}
result = createProjectionFromHeaders(nitf->getHeader(),
imageHeader.get());
if (traceDebug())
{
ossimString coordinateSystem = imageHeader->getCoordinateSystem();
ossimNotify(ossimNotifyLevel_DEBUG)
<< MODULE << " DEBUG:"
<< "\ncoordinateSysetm: " << coordinateSystem
<< std::endl;
}
return result;
}
ossimProjection* ossimNitfProjectionFactory::createProjection(ossimImageHandler* handler)const
{
ossimNitfTileSource* nitfTileSource = dynamic_cast<ossimNitfTileSource*> (handler);
ossimProjection* result = 0;
if(nitfTileSource)
{
if(!result)
{
ossimNitfImageHeader* imageHeader = nitfTileSource->getCurrentImageHeader();
if(imageHeader)
{
result = createProjectionFromHeaders(nitfTileSource->getFileHeader(),imageHeader);
}
}
}
else if(isNitf(handler->getFilename()))
{
result = createProjection(handler->getFilename(), handler->getCurrentEntry());
}
return result;
}
