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This class defines the Lambert projection used in France. More...
#include <ilviews/maps/projection/frlamber.h>
Public Member Functions | |
| IlvFrenchLambertProjection (IlvFrenchLambertMode mode=IlvFrenchLambert_II_extended) | |
Initializes an instance of IlvFrenchLambertPojection and sets it to the specified mode. More... | |
| virtual IlvProjection * | copy () const |
| Returns a copy of the projection. It must be overridden in each subclass. More... | |
| virtual IlvProjectionClassInfo * | getClassInfo () const |
| Returns the class information for the projection. More... | |
| IlvFrenchLambertMode | getMode () const |
| Returns the mode of the projection. More... | |
| virtual void | setLLCenter (double, double) |
| Specifies the central meridian and the central parallel (in radian) associated with the projection. More... | |
| void | setMode (IlvFrenchLambertMode mode) |
| Sets the mode of the projection. More... | |
| virtual IlvMapsError | setSecantLatitudes (const IlvCoordinate &secant) |
| Sets the latitudes at which the cone of the projection intersects with the earth. More... | |
| virtual void | write (IlvOutputFile &) const |
| Saves the parameters of a projection to the specified output file. More... | |
 Public Member Functions inherited from IlvLambertConformalConicProjection | |
| IlvLambertConformalConicProjection (IlDouble l1=IlvMaps::DegreeToRadian(33.), IlDouble l2=IlvMaps::DegreeToRadian(45.)) | |
Initializes an instance of the class IlvLambertConformalConicProjection and sets its secant latitudes to the specified values. | |
| IlDouble | getScaleFactor () const |
| Returns the scale factor applied to the projected data. More... | |
| virtual IlvMapsError | setEllipsoid (const IlvEllipsoid &ellipsoid) |
| Sets the ellipsoid used for the projection. More... | |
| void | setScaleFactor (IlDouble k0) |
| Sets the scale factor applied to the projected data. More... | |
| Public Member Functions inherited from IlvConicProjection | |
| IlDouble | getSecantLatitude1 (void) const |
| Gets the first secant latitude. More... | |
| IlDouble | getSecantLatitude2 (void) const |
| Gets the second secant latitude. More... | |
| const IlvCoordinate & | getSecantLatitudes () const |
Returns the secant latitudes of the projection in an IlvCoordinate. More... | |
| IlvMapsError | setSecantLatitude1 (IlDouble v) |
| Sets the first secant latitude. More... | |
| IlvMapsError | setSecantLatitude2 (IlDouble v) |
| Sets the second secant latitude. More... | |
| Public Member Functions inherited from IlvProjection | |
| IlvMapsError | forward (const IlvCoordinate &llIn, IlvCoordinate &xyOut) const |
| Converts a latitude and a longitude to Cartesian coordinates (x,y). More... | |
| IlvMapsError | forward (IlvCoordinate &x) const |
| This member function converts a latitude and a longitude to Cartesian coordinates. More... | |
| IlDouble | getCentralMeridian () const |
| Returns the central meridian of the projection. More... | |
| IlDouble | getCentralParallel () const |
| Returns the central parallel of the projection. More... | |
| const IlvHorizontalDatum * | getDatum (void) const |
| Returns the horizontal datum used for the projection. More... | |
| const IlvEllipsoid * | getEllipsoid (void) const |
| Returns the ellipsoid used for the projection. More... | |
| IlvMapsError | getError () const |
Returns the status of the projection. If the projection is valid, the function returns IlvMapsError::NoError(), otherwise, it returns an error code. See the IlvMaps class to know how to interpret the error codes. More... | |
| IlDouble | getFalseEasting () const |
| Returns the false easting of the projection. More... | |
| IlDouble | getFalseNorthing () const |
| Returns the false northing of the projection. More... | |
| IlvProjectionInterface * | getInterface () |
| Returns the interface of the projection. More... | |
| IlvCoordinate | getLLCenter (void) const |
| Returns the central meridian and the central parallel associated with the projection (0-0 by default). More... | |
| IlvProjectionGeometricProperty | getProperty () const |
| Returns the geometric property of the projection. More... | |
| const IlvUnitConverter * | getUnitConverter () const |
| Returns the unit converter. More... | |
| IlvCoordinate | getXYOffset (void) const |
| Returns the false easting and the false northing of the projection. More... | |
| IlvMapsError | inverse (const IlvCoordinate &xyIn, IlvCoordinate &llOut) const |
| Converts the specified coordinate to a latitude and a longitude. More... | |
| IlvMapsError | inverse (IlvCoordinate &x) const |
Converts the IlvCoordinate representing Cartesian coordinates to a latitude and a longitude. More... | |
| IlBoolean | isBad () const |
| Checks for an inconsistent state of the projection. More... | |
| IlBoolean | isEllipsoidEnabled () const |
Returns IlTrue if non spherical ellipsoids can be used for the projection. More... | |
| IlBoolean | isGeocentric () const |
| Checks if the projection uses geocentric latitudes. More... | |
| IlBoolean | isInverseEnabled () const |
Returns IlTrue if the inverse function is supported by the projection. More... | |
| IlBoolean | isShared () const |
Returns IlTrue if the projection is shared. More... | |
| IlBoolean | isUsingLongitudeReduction () const |
Returns IlTrue if the projection uses range reduction for longitudes. More... | |
| void | lock () |
| Locks the projection. | |
| virtual IL_STDPREF ostream & | printPROJ4Descriptor (IL_STDPREF ostream &ostr, IlvMapsError *status=0) const |
| This virtual member function converts the projection to a string in the PROJ4 format. More... | |
| void | save (IlvOutputFile &outputFile) const |
Saves an instance of a subclass of IlvProjection to the specified output file. More... | |
| void | setCentralMeridian (IlDouble lon) |
| Sets the central meridian of the projection. More... | |
| void | setCentralParallel (IlDouble lat) |
| Sets the central parallel of the projection. More... | |
| virtual IlvMapsError | setDatum (const IlvHorizontalDatum *datum) |
| Sets the datum used for the projection. More... | |
| void | setFalseEasting (IlDouble falseEasting) |
| Sets the false easting of the projection. More... | |
| void | setFalseNorthing (IlDouble falseNorthing) |
| Sets the false northing of the projection. More... | |
| void | setGeocentric (IlBoolean geoc) |
| Specifies whether the projection uses geocentric or geodetic latitudes. More... | |
| void | setShared () |
| Specifies that the projection will be shared. More... | |
| void | setUnitConverter (const IlvUnitConverter &converter) |
| Sets the unit converter of the projection. The default unit is meters. More... | |
| void | setUsingLongitudeReduction (IlBoolean use) |
| Specifies whether the projection uses longitude reduction. More... | |
| void | setXYOffset (IlDouble x0, IlDouble y0) |
| Specifies the false easting and the false northing. More... | |
| void | unLock () |
| Unlocks the object. More... | |
Static Public Member Functions | |
| static const IlvEllipsoid * | GetNTFEllipsoid () |
| Returns the ellipsoid used for the NTF geodesic system. More... | |
| static IlDouble | GetParisMeridian () |
| Returns the longitude of the Paris meridian in radian. More... | |
| static const IlvEllipsoid * | GetRGF93Ellipsoid () |
| Returns the ellipsoid used for the Lambert 93 mode of the projection. More... | |
Additional Inherited Members | |
| Protected Member Functions inherited from IlvLambertConformalConicProjection | |
| virtual IlvMapsError | eForward (IlvCoordinate &ll) const |
| Must be redefined in subclasses to implement the projection for a non spherical ellipsoid. More... | |
| virtual IlvMapsError | eInverse (IlvCoordinate &xy) const |
| Implements the inverse projection for a non spherical ellipsoid. More... | |
| virtual IlvMapsError | sForward (IlvCoordinate &ll) const |
| Must be redefined in subclasses to implement the projection for a sphere. More... | |
| virtual IlvMapsError | sInverse (IlvCoordinate &xy) const |
| Must be redefined in subclasses to implement the inverse projection for a sphere. More... | |
This class defines the Lambert projection used in France.
It is a special form of the IlvLambertConformalConicProjection for which a set of parameters is defined for six different modes.
For small scale maps (1:25 000 and smaller), France has been divided into four zones. To each zone corresponds a mode of the projection:
For large scale maps, the Lambert II extended mode is generally used. Another mode is used for maps using the RGF93 geodesic system (RGF93 stands for "Réseau Géodesique Francais"). This mode is called Lambert 93.
The first five modes of the projection use an IGN version of the Clarke 1880 ellipsoid, while the Lambert 93 mode uses the GRS80 ellipsoid. The first five modes are centered on the Paris meridian that passes through the middle of the facade of the "Observatoire de Paris." The Lambert 93 is centered at 3 degrees east.
Library: ilvmaps
| IlvFrenchLambertProjection::IlvFrenchLambertProjection | ( | IlvFrenchLambertMode | mode = IlvFrenchLambert_II_extended | ) |
Initializes an instance of IlvFrenchLambertPojection and sets it to the specified mode.
| mode | IlvFrenchLambertMode. |
|
virtual |
Returns a copy of the projection. It must be overridden in each subclass.
Implements IlvProjection.
|
virtual |
Returns the class information for the projection.
Reimplemented from IlvConicProjection.
| IlvFrenchLambertMode IlvFrenchLambertProjection::getMode | ( | ) | const |
Returns the mode of the projection.
|
static |
Returns the ellipsoid used for the NTF geodesic system.
This geodesic system is used by the modes Lambert_I, Lambert_II, Lambert_III, Lambert_IV and Lambert_II_extended.
|
static |
Returns the longitude of the Paris meridian in radian.
|
static |
Returns the ellipsoid used for the Lambert 93 mode of the projection.
|
virtual |
Specifies the central meridian and the central parallel (in radian) associated with the projection.
By default, theses values are set to 0. This function is virtual because it can be overridden by subclasses of IlvProjection to update the internal parameters when the center is changed.
| lon | The central meridian in radian. |
| lat | The central parallel in radian. |
Reimplemented from IlvLambertConformalConicProjection.
| void IlvFrenchLambertProjection::setMode | ( | IlvFrenchLambertMode | mode | ) |
Sets the mode of the projection.
| mode | The mode of the projection. |
|
virtual |
Sets the latitudes at which the cone of the projection intersects with the earth.
| secant | A vector that contains two values: secant.x represents the first latitude at which the cone intersects with the earth. secant.y represents the second latitude at which the cone intersects with the earth. Both values are expressed in radian. |
secant.x = -secant.y or secant.x = secant.y = PI/2.Reimplemented from IlvLambertConformalConicProjection.
|
virtual |
Saves the parameters of a projection to the specified output file.
It must be overridden by subclasses of IlvProjection that need to save additional parameters. This function should not be directly called; use the save function instead.
| outputFile | The file to write the projection parameters to. |
Reimplemented from IlvLambertConformalConicProjection.
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