/usr/include/ossim/elevation/ossimElevSource.h is in libossim-dev 1.7.21-4.
This file is owned by root:root, with mode 0o644.
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// FILE: ossimElevSource.h
//
// License: See top level LICENSE.txt file.
//
// AUTHOR: Oscar Kramer
//
// DESCRIPTION:
// Contains declaration of class ossimElevSource. This is the base class for
// all objects providing height information given horizontal ground position.
//
//*****************************************************************************
// $Id: ossimElevSource.h 14297 2009-04-14 17:25:31Z gpotts $
#ifndef ossimElevSource_HEADER
#define ossimElevSource_HEADER
#include <ossim/base/ossimConstants.h>
#include <ossim/base/ossimSource.h>
#include <ossim/base/ossimGrect.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/base/ossimGeoid.h>
class ossimEcefRay;
class ossimKeywordlist;
/******************************************************************************
* CLASS: ossimElevSource
*
*****************************************************************************/
class OSSIM_DLL ossimElevSource : public ossimSource
{
public:
virtual ~ossimElevSource();
virtual const ossimElevSource& operator = (const ossimElevSource& src);
/**
* Height access methods:
*/
virtual double getHeightAboveMSL(const ossimGpt&) = 0;
virtual double getHeightAboveEllipsoid(const ossimGpt&);
/**
* METHOD: intersectRay()
*
* Service method for intersecting a ray with the elevation surface to
* arrive at a ground point. The ray is expected to originate ABOVE the
* surface and pointing down.
*
* NOTE: the gpt argument is expected to be initialized with the desired
* datum, including ellipsoid, for the proper intersection point to be
* computed.
*
* LIMITATION: This release supports only single valued solutions, i.e., it
* is possible a ray passing through one side of a mountain and out the
* other will return an intersection with the far side. Eventually,
* a more robust algorithm will be employed.
*
* Returns true if good intersection found.
*/
bool intersectRay(const ossimEcefRay& ray, ossimGpt& gpt);
/**
* Access methods for the bounding elevations:
*/
virtual double getMinHeightAboveMSL() const;
virtual double getMaxHeightAboveMSL() const;
/**
* Special numeric quantities as defined by this source:
*/
double getNullHeightValue() const;
double getSeaLevelValue() const;
/**
* METHOD: pointHasCoverage(gpt)
* Returns TRUE if coverage exists over gpt:
*/
virtual bool pointHasCoverage(const ossimGpt&) const = 0;
/**
* METHOD: meanSpacingMeters()
* This method returns the post spacing in the region of gpt:
*/
virtual double getMeanSpacingMeters() const = 0;
/**
* METHODS: accuracyLE90(), accuracyCE90()
* Returns the vertical and horizontal accuracy (90% confidence) in the
* region of gpt:
*/
virtual double getAccuracyLE90(const ossimGpt& gpt) const = 0;
virtual double getAccuracyCE90(const ossimGpt& gpt) const = 0;
/**
* METHOD: getBoundingGndRect
*
* @return The bounding geograpic rectangle in decimal degrees.
*/
virtual const ossimGrect& getBoundingGndRect() const;
virtual bool canConnectMyInputTo(ossim_int32 inputIndex,
const ossimConnectableObject* object)const;
/**
* Implement ossimSource base-class pure virtuals:
*/
virtual void initialize();
virtual ossimFilename getFilename() const;
/**
* Opens a stream to an elevation cell.
*
* @return Returns true on success, false on error.
*
* @note This implementation always returns true. This should be
* overridden in derived classes that have streams to files.
*/
virtual bool open();
/**
* Closes the stream to the file.
*
* @note This implementation does nothing. This should be
* overridden in derived classes that have streams to files.
*/
virtual void close();
/**
* @return Returns the flag which controls whether or not statistics will
* be computed upon opening a cell and not finding a corresponding
* statistics file.
*/
virtual bool getComputeStatisticsFlag() const;
/**
* Sets the flag which controls whether or not statistics will
* be computed upon opening a cell and not finding a corresponding
* statistics file.
*
* @param flag true to enable, false to disable.
*
* @note This flag can also be controlled by user via the ossim preferences
* keyword = "elevation.compute_statistics.enabled".
*/
virtual void setComputeStatisticsFlag(bool flag);
protected:
/**
* Constructors/Destructors:
*/
ossimElevSource();
ossimElevSource(const ossimElevSource& src);
/**
* Data members:
*/
double theMinHeightAboveMSL;
double theMaxHeightAboveMSL;
double theNullHeightValue;
double theSeaLevelValue;
ossimGrect theGroundRect;
//> Controls statistics gathering. Defaulted to true.
bool theComputeStatsFlag;
private:
TYPE_DATA
};
#endif
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