void ossimTiledElevationDatabase::getBoundingRect(
ossimRefPtr<ossimImageGeometry> geom, ossimGrect& boundingRect) const
{
if ( geom.valid() )
{
std::vector<ossimGpt> corner(4);
if ( geom->getCornerGpts(corner[0], corner[1], corner[2], corner[3]) )
{
ossimGpt ulGpt(corner[0]);
ossimGpt lrGpt(corner[0]);
for ( ossim_uint32 i = 1; i < 4; ++i )
{
if ( corner[i].lon < ulGpt.lon ) ulGpt.lon = corner[i].lon;
if ( corner[i].lat > ulGpt.lat ) ulGpt.lat = corner[i].lat;
if ( corner[i].lon > lrGpt.lon ) lrGpt.lon = corner[i].lon;
if ( corner[i].lat < lrGpt.lat ) lrGpt.lat = corner[i].lat;
}
boundingRect = ossimGrect(ulGpt, lrGpt);
}
else
{
boundingRect.makeNan();
}
}
}
void ossimImageElevationDatabase::getBoundingRect(ossimGrect& rect) const
{
// The bounding rect is the North up rectangle. So if the underlying image projection is not
// a geographic projection and there is a rotation this will include null coverage area.
rect.makeNan();
std::map<ossim_uint64, ossimImageElevationFileEntry>::const_iterator i = m_entryMap.begin();
ossimGrect subRect;
while ( i != m_entryMap.end() )
{
subRect = i->second.m_rect;
if (subRect.isLonLatNan())
{
// The DEM source was not yet initialized:
ossimRefPtr<ossimImageElevationHandler> h = new ossimImageElevationHandler();
if ( h->open( i->second.m_file ) )
subRect = h->getBoundingGndRect();
else
{
++i;
continue;
}
}
if (rect.isLonLatNan())
rect = subRect;
else
rect = rect.combine(subRect);
++i;
}
}