/usr/include/ossim/elevation/ossimSrtmElevationDatabase.h is in libossim-dev 2.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//
// License: MIT
//
//---
// $Id$
#ifndef ossimSrtmElevationDatabase_HEADER
#define ossimSrtmElevationDatabase_HEADER 1
#include <ossim/elevation/ossimElevationCellDatabase.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/elevation/ossimSrtmHandler.h>
#include <mutex>
class OSSIM_DLL ossimSrtmElevationDatabase : public ossimElevationCellDatabase
{
public:
typedef std::vector<ossimRefPtr<CellInfo> > DirectMap; // 360x180 cell grid
ossimSrtmElevationDatabase();
ossimSrtmElevationDatabase(const ossimSrtmElevationDatabase& rhs);
virtual ~ossimSrtmElevationDatabase();
virtual ossimObject* dup() const;
virtual bool open(const ossimString& connectionString);
bool getAccuracyInfo(ossimElevationAccuracyInfo& info, const ossimGpt& /*gpt*/) const;
virtual bool pointHasCoverage(const ossimGpt& gpt) const
{
ossimFilename filename;
createFullPath(filename, gpt);
return filename.exists();
}
virtual double getHeightAboveMSL(const ossimGpt&);
virtual double getHeightAboveEllipsoid(const ossimGpt& gpt);
virtual ossim_uint64 createId(const ossimGpt& pt)const
{
ossim_uint64 y = static_cast<ossim_uint64>(ossim::wrap(pt.latd(), -90.0, 90.0)+90.0);
ossim_uint64 x = static_cast<ossim_uint64>(ossim::wrap(pt.lond(),-180.0,180.0)+180.0);
// map the extreme edge to the same ID ax the 179 west cell and the same for the 89
// degree north cell.
//
x = x==360?359:x;
y = y==180?179:y;
// Srtm databases are 1x1 degree cells and we will use a world
// grid for id generation.
//
return (y*360+x);
}
virtual bool loadState(const ossimKeywordlist& kwl, const char* prefix = 0);
virtual bool saveState(ossimKeywordlist& kwl, const char* prefix = 0)const;
protected:
bool openSrtmDirectory(const ossimFilename& dir);
void createRelativePath(ossimFilename& file, const ossimGpt& gpt)const;
void createFullPath(ossimFilename& file, const ossimGpt& gpt)const
{
ossimFilename relativeFile;
createRelativePath(relativeFile, gpt);
file = ossimFilename(m_connectionString).dirCat(relativeFile);
}
ossimRefPtr<ossimElevCellHandler> createCell(const ossimGpt& gpt);
TYPE_DATA
};
#endif
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