#include <ossimLlxyProjection.h>

Inheritance diagram for ossimLlxyProjection:

Public Member Functions
	ossimLlxyProjection ()

	ossimLlxyProjection (const ossimLlxyProjection &rhs)

	ossimLlxyProjection (const ossimEllipsoid &ellipsoid, const ossimGpt &origin)

	ossimLlxyProjection (const ossimGpt &origin, double latSpacing, double lonSpacing)

virtual	~ossimLlxyProjection ()

virtual ossimObject *	dup () const

virtual bool	isGeographic () const

virtual ossimDpt	forward (const ossimGpt &worldPoint) const
	All map projections will convert the world coordinate to an easting northing (Meters). More...

virtual ossimGpt	inverse (const ossimDpt &projectedPoint) const
	Will take a point in meters and convert it to ground. More...

virtual double	getLatSpacing () const

virtual double	getLonSpacing () const

virtual void	setLatSpacing (double spacing)

virtual void	setLonSpacing (double spacing)

virtual void	worldToLineSample (const ossimGpt &worldPoint, ossimDpt &lineSampPt) const

virtual void	lineSampleToWorld (const ossimDpt &lineSampPt, ossimGpt &worldPt) const

virtual bool	saveState (ossimKeywordlist &kwl, const char *prefix=0) const

virtual bool	loadState (const ossimKeywordlist &kwl, const char *prefix=0)

virtual std::ostream &	print (std::ostream &out) const
	Prints data members to stream. More...

virtual bool	operator== (const ossimProjection &projection) const
	Compares this to arg projection and returns TRUE if the same. More...

virtual void	setMetersPerPixel (const ossimDpt &pt)

virtual void	computeDegreesPerPixel (const ossimGpt &ground, const ossimDpt &metersPerPixel, double &deltaLat, double &deltaLon)

virtual void	computeMetersPerPixel (const ossimGpt &center, double deltaDegreesPerPixelLat, double deltaDegreesPerPixelLon, ossimDpt &metersPerPixel)

Public Member Functions inherited from ossimMapProjection
	ossimMapProjection (const ossimEllipsoid &ellipsoid=ossimEllipsoid(), const ossimGpt &origin=ossimGpt())

	ossimMapProjection (const ossimMapProjection &src)

virtual ossimGpt	origin () const

virtual ossimDpt	worldToLineSample (const ossimGpt &worldPoint) const

virtual ossimGpt	lineSampleToWorld (const ossimDpt &projectedPoint) const

virtual void	lineSampleHeightToWorld (const ossimDpt &lineSampPt, const double &heightAboveEllipsoid, ossimGpt &worldPt) const
	This is the pure virtual that projects the image point to the given elevation above ellipsoid, thereby bypassing reference to a DEM. More...

virtual void	lineSampleToEastingNorthing (const ossimDpt &liineSample, ossimDpt &eastingNorthing) const

virtual void	eastingNorthingToLineSample (const ossimDpt &eastingNorthing, ossimDpt &lineSample) const

virtual void	eastingNorthingToWorld (const ossimDpt &eastingNorthing, ossimGpt &worldPt) const

virtual double	getFalseEasting () const

virtual double	getFalseNorthing () const

virtual double	getStandardParallel1 () const
	Derived classes should implement as needed. More...

virtual double	getStandardParallel2 () const
	Derived classes should implement as needed. More...

virtual void	update ()

virtual void	setPcsCode (ossim_uint32 pcsCode)

virtual ossim_uint32	getPcsCode () const
	Returns the EPSG PCS code or 32767 if the projection is a custom (non-EPSG) projection. More...

virtual ossimString	getProjectionName () const
	Returns the projection name. More...

virtual double	getA () const
	ACCESS METHODS: More...

virtual double	getB () const

virtual double	getF () const

virtual ossimDpt	getMetersPerPixel () const

virtual const ossimDpt &	getDecimalDegreesPerPixel () const
	Returns decimal degrees per pixel as an ossimDpt with "x" representing longitude and "y" representing latitude. More...

virtual const ossimDpt &	getUlEastingNorthing () const

virtual const ossimGpt &	getUlGpt () const

virtual const ossimDatum *	getDatum () const

const ossimEllipsoid &	getEllipsoid () const

const ossimGpt &	getOrigin () const

virtual void	applyScale (const ossimDpt &scale, bool recenterTiePoint)
	Applies scale to theDeltaLonPerPixel, theDeltaLatPerPixel and theMetersPerPixel data members (eg: theDeltaLonPerPixel *= scale.x). More...

virtual void	setEllipsoid (const ossimEllipsoid &ellipsoid)
	SET METHODS: More...

virtual void	setAB (double a, double b)

virtual void	setDatum (const ossimDatum *datum)
	Sets theDatum to datum. More...

virtual void	setOrigin (const ossimGpt &origin)
	Sets theOrigin to origin. More...

virtual void	setDecimalDegreesPerPixel (const ossimDpt &gsd)

virtual void	setUlTiePoints (const ossimGpt &gpt)

virtual void	setUlTiePoints (const ossimDpt &eastingNorthing)

virtual void	setUlEastingNorthing (const ossimDpt &ulEastingNorthing)

virtual void	setUlGpt (const ossimGpt &ulGpt)

virtual void	assign (const ossimProjection &aProjection)

virtual void	computeDegreesPerPixel ()
	Computes the approximate resolution in degrees/pixel. More...

virtual void	computeMetersPerPixel ()
	This will go from the ground point and give you an approximate meters per pixel. More...

void	setMatrix (double rotation, const ossimDpt &scale, const ossimDpt &translation)

void	setMatrixScale (const ossimDpt &scale)

void	setMatrixRotation (double rotation)

void	setMatrixTranslation (const ossimDpt &translation)

void	snapTiePointTo (ossim_float64 multiple, ossimUnitType unitType)
	Utility method to snap the tie point to some multiple. More...

void	snapTiePointToOrigin ()

void	setElevationLookupFlag (bool flag)

bool	getElevationLookupFlag () const

ossimUnitType	getModelTransformUnitType () const

void	setModelTransformUnitType (ossimUnitType unit)

bool	hasModelTransform () const

virtual bool	isAffectedByElevation () const
	Implementation of pure virtual ossimProjection::isAffectedByElevation method. More...

void	setProjectionUnits (ossimUnitType units)

ossimUnitType	getProjectionUnits () const
	OSSIM considers all map projection coordinates (including false eastings and northings) to be in meters. More...

virtual bool	isEqualTo (const ossimObject &obj, ossimCompareType compareType=OSSIM_COMPARE_FULL) const

Public Member Functions inherited from ossimProjection
	ossimProjection ()

virtual	~ossimProjection ()

virtual void	getRoundTripError (const ossimDpt &imagePoint, ossimDpt &errorResult) const

virtual void	getRoundTripError (const ossimGpt &groundPoint, ossimDpt &errorResult) const

virtual void	getGroundClipPoints (ossimGeoPolygon &gpts) const

virtual bool	operator!= (const ossimProjection &projection) const

Public Member Functions inherited from ossimObject
	ossimObject ()

virtual	~ossimObject ()

virtual ossimString	getShortName () const

virtual ossimString	getLongName () const

virtual ossimString	getDescription () const

virtual ossimString	getClassName () const

virtual RTTItypeid	getType () const

virtual bool	canCastTo (ossimObject *obj) const

virtual bool	canCastTo (const RTTItypeid &id) const

virtual bool	canCastTo (const ossimString &parentClassName) const

virtual void	accept (ossimVisitor &visitor)

Public Member Functions inherited from ossimReferenced
	ossimReferenced ()

	ossimReferenced (const ossimReferenced &)

ossimReferenced &	operator= (const ossimReferenced &)

void	ref () const
	increment the reference count by one, indicating that this object has another pointer which is referencing it. More...

void	unref () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

void	unref_nodelete () const
	decrement the reference count by one, indicating that a pointer to this object is referencing it. More...

int	referenceCount () const

Public Member Functions inherited from ossimErrorStatusInterface
	ossimErrorStatusInterface ()

virtual	~ossimErrorStatusInterface ()

virtual ossimErrorCode	getErrorStatus () const

virtual ossimString	getErrorStatusString () const

virtual void	setErrorStatus (ossimErrorCode error_status) const

virtual void	setErrorStatus () const

virtual void	clearErrorStatus () const

bool	hasError () const

Additional Inherited Members
Protected Member Functions inherited from ossimMapProjection
virtual	~ossimMapProjection ()

void	updateFromTransform ()

Protected Member Functions inherited from ossimReferenced
virtual	~ossimReferenced ()

Protected Attributes inherited from ossimMapProjection
ossimEllipsoid	theEllipsoid
	This method verifies that the projection parameters match the current pcs code. More...

ossimGpt	theOrigin

const ossimDatum *	theDatum
	This is only set if we want to have built in datum shifting. More...

ossimDpt	theMetersPerPixel
	Holds the number of meters per pixel. More...

ossimDpt	theDegreesPerPixel
	Hold the decimal degrees per pixel. More...

ossimGpt	theUlGpt
	Hold tie point in decimal degrees. More...

ossimDpt	theUlEastingNorthing
	Hold tie point as easting northing. More...

ossimDpt	theFalseEastingNorthing
	Hold the false easting northing. More...

ossim_uint32	thePcsCode
	Projection Coordinate System(PCS) code. More...

bool	theElevationLookupFlag

ossimMatrix4x4	theModelTransform

ossimMatrix4x4	theInverseModelTransform

ossimUnitType	theModelTransformUnitType

ossimUnitType	theProjectionUnits
	Linear units of the projection as indicated in the projection's specification: More...

Protected Attributes inherited from ossimErrorStatusInterface
ossimErrorCode	theErrorStatus

Detailed Description

Definition at line 21 of file ossimLlxyProjection.h.

Constructor & Destructor Documentation

◆ ossimLlxyProjection() [1/4]

ossimLlxyProjection::ossimLlxyProjection ( )

Definition at line 28 of file ossimLlxyProjection.cpp.

References ossimMapProjection::theDegreesPerPixel, and ossimDpt::y.

Referenced by dup().

 {
   // set to about 1 meter per pixel
    theDegreesPerPixel.y = DEFAULT_DEGREES_PER_PIXEL;
    theDegreesPerPixel.x = DEFAULT_DEGREES_PER_PIXEL;
    theUlEastingNorthing.y = ossim::nan();
    theUlEastingNorthing.x = ossim::nan();
    computeMetersPerPixel(theOrigin, 
              theDegreesPerPixel.y,
              theDegreesPerPixel.x,
              theMetersPerPixel);
 }

◆ ossimLlxyProjection() [2/4]

ossimLlxyProjection::ossimLlxyProjection ( const ossimLlxyProjection & rhs )

Definition at line 41 of file ossimLlxyProjection.cpp.

References ossimMapProjection::computeMetersPerPixel(), ossimGpt::datum(), ossimDatum::ellipsoid(), ossim::nan(), ossimMapProjection::theDatum, ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theEllipsoid, ossimMapProjection::theMetersPerPixel, ossimMapProjection::theOrigin, ossimMapProjection::theUlEastingNorthing, ossimMapProjection::theUlGpt, ossimDpt::x, and ossimDpt::y.

    :
       ossimMapProjection(rhs)
 {
    theOrigin              = rhs.theOrigin;
    theUlGpt               = rhs.theUlGpt;
    theUlEastingNorthing.y = ossim::nan();
    theUlEastingNorthing.x = ossim::nan();
    theDatum               = theOrigin.datum();
    theEllipsoid           = *(theDatum->ellipsoid());
    theDegreesPerPixel.y    = rhs.theDegreesPerPixel.y;
    theDegreesPerPixel.x    = rhs.theDegreesPerPixel.x;
    computeMetersPerPixel(theOrigin, 
              theDegreesPerPixel.y,
              theDegreesPerPixel.x,
              theMetersPerPixel);
 }

◆ ossimLlxyProjection() [3/4]

ossimLlxyProjection::ossimLlxyProjection	(	const ossimEllipsoid &	ellipsoid,
		const ossimGpt &	origin
	)

Definition at line 79 of file ossimLlxyProjection.cpp.

References ossimMapProjection::computeMetersPerPixel(), ossim::nan(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theMetersPerPixel, ossimMapProjection::theOrigin, ossimMapProjection::theUlEastingNorthing, ossimDpt::x, and ossimDpt::y.

   :ossimMapProjection(ellipsoid, origin)
 {
    theDegreesPerPixel.y = 1.0;
    theDegreesPerPixel.x = 1.0;
    theUlEastingNorthing.y = ossim::nan();
    theUlEastingNorthing.x = ossim::nan();
    computeMetersPerPixel(theOrigin, 
              theDegreesPerPixel.y,
              theDegreesPerPixel.x,
              theMetersPerPixel);
 }

◆ ossimLlxyProjection() [4/4]

ossimLlxyProjection::ossimLlxyProjection	(	const ossimGpt &	origin,
		double	latSpacing,
		double	lonSpacing
	)

Definition at line 59 of file ossimLlxyProjection.cpp.

References ossimMapProjection::computeMetersPerPixel(), ossimGpt::datum(), ossimDatum::ellipsoid(), ossimMapProjection::origin(), ossimMapProjection::theDatum, ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theEllipsoid, ossimMapProjection::theMetersPerPixel, ossimMapProjection::theOrigin, ossimMapProjection::theUlEastingNorthing, ossimMapProjection::theUlGpt, ossimDpt::x, and ossimDpt::y.

    :
       ossimMapProjection()
 {
    theOrigin              = origin;
    theUlGpt               = origin;
    theUlEastingNorthing.y = 0.0;
    theUlEastingNorthing.x = 0.0;
    theDatum               = theOrigin.datum();
    theEllipsoid           = *(theDatum->ellipsoid());
    theDegreesPerPixel.y    = latSpacing;
    theDegreesPerPixel.x    = lonSpacing;
    computeMetersPerPixel(theOrigin, 
              theDegreesPerPixel.y,
              theDegreesPerPixel.x,
              theMetersPerPixel);
 }

◆ ~ossimLlxyProjection()

ossimLlxyProjection::~ossimLlxyProjection ( )

virtual

Definition at line 93 of file ossimLlxyProjection.cpp.

94 {

95 }

Member Function Documentation

◆ computeDegreesPerPixel()

void ossimLlxyProjection::computeDegreesPerPixel	(	const ossimGpt &	ground,
		const ossimDpt &	metersPerPixel,
		double &	deltaLat,
		double &	deltaLon
	)

virtual

This will go from the ground point and give you an approximate lat and lon per pixel. the Delta Lat and delta lon will be in degrees.

Definition at line 106 of file ossimLlxyProjection.cpp.

References ossimGpt::metersPerDegree(), ossimDpt::x, and ossimDpt::y.

 {
    ossimDpt mpd = ground.metersPerDegree();
    ossimDpt dpm(1.0/mpd.x,
                 1.0/mpd.y);
    deltaLat = metersPerPixel.y*dpm.y;
    deltaLon = metersPerPixel.x*dpm.x;
 }

◆ computeMetersPerPixel()

void ossimLlxyProjection::computeMetersPerPixel	(	const ossimGpt &	center,
		double	deltaDegreesPerPixelLat,
		double	deltaDegreesPerPixelLon,
		ossimDpt &	metersPerPixel
	)

virtual

This will go from the ground point and give you an approximate meters per pixel. the Delta Lat and delta lon will be in degrees.

Definition at line 122 of file ossimLlxyProjection.cpp.

References ossimGpt::metersPerDegree(), ossimDpt::x, and ossimDpt::y.

 {
   metersPerPixel = center.metersPerDegree();
   metersPerPixel.x *= deltaDegreesPerPixelLon;
   metersPerPixel.y *= deltaDegreesPerPixelLat;
 }

◆ dup()

ossimObject * ossimLlxyProjection::dup ( ) const

virtual

Implements ossimProjection.

Definition at line 97 of file ossimLlxyProjection.cpp.

References ossimLlxyProjection().

 {
    return new ossimLlxyProjection(*this);
 }

◆ forward()

ossimDpt ossimLlxyProjection::forward ( const ossimGpt & worldPoint ) const

virtual

All map projections will convert the world coordinate to an easting northing (Meters).

Implements ossimMapProjection.

Definition at line 272 of file ossimLlxyProjection.cpp.

References worldToLineSample().

 {
    ossimDpt result;
 
    worldToLineSample(worldPoint, result);
 
    return result;
 }

◆ getLatSpacing()

double ossimLlxyProjection::getLatSpacing ( ) const

virtual

METHOD: getLatSpacing() Returns the latitude spacing as a double representing decimal degrees.

Definition at line 313 of file ossimLlxyProjection.cpp.

References ossimMapProjection::theDegreesPerPixel, and ossimDpt::y.

 {
    return theDegreesPerPixel.y;
 }

◆ getLonSpacing()

double ossimLlxyProjection::getLonSpacing ( ) const

virtual

METHOD: getLonSpacing() Returns the longitude spacing as a double representing decimal degrees.

Definition at line 318 of file ossimLlxyProjection.cpp.

References ossimMapProjection::theDegreesPerPixel, and ossimDpt::x.

 {
    return theDegreesPerPixel.x;
 }

◆ inverse()

ossimGpt ossimLlxyProjection::inverse ( const ossimDpt & projectedPoint ) const

virtual

Will take a point in meters and convert it to ground.

Implements ossimMapProjection.

Definition at line 281 of file ossimLlxyProjection.cpp.

References lineSampleToWorld().

 {
    ossimGpt result;
    
    lineSampleToWorld(projectedPoint, result);
    
    return result;
 }

◆ isGeographic()

bool ossimLlxyProjection::isGeographic ( ) const

virtual

Reimplemented from ossimMapProjection.

Definition at line 308 of file ossimLlxyProjection.cpp.

 {
    return true;
 }

◆ lineSampleToWorld()

void ossimLlxyProjection::lineSampleToWorld	(	const ossimDpt &	lineSampPt,
		ossimGpt &	worldPt
	)		const

virtual

METHOD: lineSampleToWorld() Performs the inverse projection from line, sample to ground (world):

Reimplemented from ossimMapProjection.

Definition at line 147 of file ossimLlxyProjection.cpp.

References ossimGpt::datum(), ossimElevManager::getHeightAboveEllipsoid(), ossimGpt::hgt, ossimElevManager::instance(), ossimGpt::latd(), ossimDpt::line, ossimGpt::lond(), ossimGpt::makeNan(), ossimDpt::samp, ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theElevationLookupFlag, ossimMapProjection::theOrigin, ossimMapProjection::theUlGpt, ossimDpt::x, and ossimDpt::y.

Referenced by inverse().

 {
    worldPt.makeNan();
    // Start with the origin.  This will keep the origin's datum.
    worldPt.datum(theOrigin.datum());
    
    double lat = theUlGpt.latd() - (lineSampPt.line * theDegreesPerPixel.y);
    double lon = theUlGpt.lond() + (lineSampPt.samp * theDegreesPerPixel.x);
 
    //---
    // Assuming the origin had a lon between -180 and 180 and lat between -90
    // and 90.
    //---
 //    if (lon > 180.0)
 //    {
 //       lon -= 360.0;
 //    }
 //    else if (lon < -180.0)
 //    {
 //       lon += 360.0;
 //    }
 //    if (lat > 90.0)
 //    {
 //       lat -= 90.0;
 //    }
 //    else if (lat < -90.0)
 //    {
 //       lat = -180.0 - lat;
 //    }
 
    worldPt.latd(lat);
    worldPt.lond(lon);
    if(theElevationLookupFlag)
    {
       worldPt.hgt = ossimElevManager::instance()->getHeightAboveEllipsoid(worldPt);
    }
 }

◆ loadState()

bool ossimLlxyProjection::loadState	(	const ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)

virtual

Method to the load (recreate) the state of an object from a keyword list. Return true if ok or false on error.

Reimplemented from ossimMapProjection.

Definition at line 216 of file ossimLlxyProjection.cpp.

References ossimMapProjection::computeDegreesPerPixel(), ossimMapProjection::computeMetersPerPixel(), ossimDpt::hasNans(), ossimGpt::hasNans(), ossimMapProjection::loadState(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theMetersPerPixel, ossimMapProjection::theOrigin, ossimDpt::x, and ossimDpt::y.

 {
    // Base class...
    ossimMapProjection::loadState(kwl, prefix);
 
    if (theOrigin.hasNans() == false)
    {
       if ( (theDegreesPerPixel.hasNans() == false) &&
            theMetersPerPixel.hasNans() )
       {
          // Compute meters per pixel from origin and decimal degrees.
          computeMetersPerPixel(theOrigin, 
                                theDegreesPerPixel.y,
                                theDegreesPerPixel.x,
                                theMetersPerPixel);
       }
       else if( (theMetersPerPixel.hasNans() == false) &&
                theDegreesPerPixel.hasNans() )
       {
          // Compute decimal degrees per pixel from origin and meters.
          computeDegreesPerPixel(theOrigin, 
                                 theMetersPerPixel,
                                 theDegreesPerPixel.y,
                                 theDegreesPerPixel.x);
       }
       else
       {
          // Assign some value.
          theDegreesPerPixel.y = DEFAULT_DEGREES_PER_PIXEL;
          theDegreesPerPixel.x = DEFAULT_DEGREES_PER_PIXEL;
          computeMetersPerPixel(theOrigin,
                                theDegreesPerPixel.y,
                                theDegreesPerPixel.x,
                                theMetersPerPixel);
       }
    }
     
    return true;
 }

◆ operator==()

bool ossimLlxyProjection::operator== ( const ossimProjection & projection ) const

virtual

Compares this to arg projection and returns TRUE if the same.

NOTE: As currently implemented in OSSIM, map projections also contain image geometry information like tiepoint and scale. This operator is only concerned with the map specification and ignores image geometry differences.

Reimplemented from ossimMapProjection.

Definition at line 257 of file ossimLlxyProjection.cpp.

References ossimMapProjection::theDegreesPerPixel, ossimDpt::x, and ossimDpt::y.

 {
    const ossimLlxyProjection* proj = dynamic_cast<const ossimLlxyProjection*>(&projection);
    
    if(!proj)
    {
       return false;
    }
 
    return ( // (theOrigin     == proj->theOrigin)     &&  // tmp... fix gpt!
             (theDegreesPerPixel.y == proj->theDegreesPerPixel.y) &&
             (theDegreesPerPixel.x == proj->theDegreesPerPixel.x) );
 }

◆ print()

std::ostream & ossimLlxyProjection::print ( std::ostream & out ) const

virtual

Prints data members to stream.

Returns stream&.

Reimplemented from ossimMapProjection.

Definition at line 186 of file ossimLlxyProjection.cpp.

References ossimMapProjection::print(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theOrigin, ossimDpt::x, and ossimDpt::y.

 {
    out << setiosflags(ios::fixed) << setprecision(15)
        << "ossimLlxyProjection dump:"
        << "\norigin:  " << theOrigin
        << "\nlatitude spacing in decimal degrees:   " << theDegreesPerPixel.y
        << "\nlongitude spacing in decimal degrees:  " << theDegreesPerPixel.x
        << "\n\nossimMapProjection dump:\n" << endl;
 
    return ossimMapProjection::print(out);
 }

◆ saveState()

bool ossimLlxyProjection::saveState	(	ossimKeywordlist &	kwl,
		const char *	prefix = `0`
	)		const

virtual

Method to save the state of an object to a keyword list. Return true if ok or false on error.

Reimplemented from ossimMapProjection.

Definition at line 207 of file ossimLlxyProjection.cpp.

References ossimMapProjection::saveState().

Referenced by ossimElevImageSource::getImageGeometry().

 {
    // Base class...
    ossimMapProjection::saveState(kwl, prefix);
 
    return true;
 }

◆ setLatSpacing()

void ossimLlxyProjection::setLatSpacing ( double spacing )

virtual

METHOD: setLatSpacing(double spacing) Set the latitude spacing as a double representing decimal degrees.

Definition at line 290 of file ossimLlxyProjection.cpp.

References ossimGpt::metersPerDegree(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theMetersPerPixel, and ossimDpt::y.

 {
    theDegreesPerPixel.y = spacing;
 
    // Update the meters per pixel.
    ossimDpt pt = ossimGpt(0.0, 0.0).metersPerDegree();
    theMetersPerPixel.y = pt.y * theDegreesPerPixel.y;
 }

◆ setLonSpacing()

void ossimLlxyProjection::setLonSpacing ( double spacing )

virtual

METHOD: setLonSpacing(double spacing) Set the latitude spacing as a double representing decimal degrees.

Definition at line 299 of file ossimLlxyProjection.cpp.

References ossimGpt::metersPerDegree(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theMetersPerPixel, and ossimDpt::x.

 {
    theDegreesPerPixel.x = spacing;
 
    // Update the meters per pixel.
    ossimDpt pt = ossimGpt(0.0, 0.0).metersPerDegree();
    theMetersPerPixel.x = pt.x * theDegreesPerPixel.x;
 }

◆ setMetersPerPixel()

void ossimLlxyProjection::setMetersPerPixel ( const ossimDpt & pt )

virtual

Reimplemented from ossimMapProjection.

Definition at line 198 of file ossimLlxyProjection.cpp.

References ossimMapProjection::computeDegreesPerPixel(), ossimMapProjection::setMetersPerPixel(), ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theMetersPerPixel, ossimMapProjection::theOrigin, ossimDpt::x, and ossimDpt::y.

 {
   ossimMapProjection::setMetersPerPixel(pt);
   computeDegreesPerPixel(theOrigin,
              theMetersPerPixel,
              theDegreesPerPixel.y,
              theDegreesPerPixel.x);
 }

◆ worldToLineSample()

void ossimLlxyProjection::worldToLineSample	(	const ossimGpt &	worldPoint,
		ossimDpt &	lineSampPt
	)		const

virtual

METHOD: worldToLineSample() Performs the forward projection from ground point to line, sample.

Reimplemented from ossimMapProjection.

Definition at line 132 of file ossimLlxyProjection.cpp.

References ossimGpt::changeDatum(), ossimGpt::datum(), ossimGpt::latd(), ossimDpt::line, ossimGpt::lond(), ossimDpt::samp, ossimMapProjection::theDegreesPerPixel, ossimMapProjection::theOrigin, ossimMapProjection::theUlGpt, ossimDpt::x, and ossimDpt::y.

Referenced by forward().

 {
    ossimGpt gpt = worldPoint;
    
    if (*theOrigin.datum() != *gpt.datum())
    {
       // Apply datum shift if it's not the same.
       gpt.changeDatum(theOrigin.datum());
    }
 
    lineSampPt.line = (theUlGpt.latd() - gpt.latd()) / theDegreesPerPixel.y;
    lineSampPt.samp = (gpt.lond() - theUlGpt.lond()) / theDegreesPerPixel.x;
 }

The documentation for this class was generated from the following files:

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ossimLlxyProjection() [1/4]

◆ ossimLlxyProjection() [2/4]

◆ ossimLlxyProjection() [3/4]

◆ ossimLlxyProjection() [4/4]

◆ ~ossimLlxyProjection()

Member Function Documentation

◆ computeDegreesPerPixel()

◆ computeMetersPerPixel()

◆ dup()

◆ forward()

◆ getLatSpacing()

◆ getLonSpacing()

◆ inverse()

◆ isGeographic()

◆ lineSampleToWorld()

◆ loadState()

◆ operator==()

◆ print()

◆ saveState()

◆ setLatSpacing()

◆ setLonSpacing()

◆ setMetersPerPixel()

◆ worldToLineSample()