SoGeoProjection Class Reference
[Properties]

Geospatial projection node More...

#include <Inventor/nodes/SoGeoProjection.h>

Inheritance diagram for SoGeoProjection:

List of all members.

Public Member Functions
virtual SoType	getTypeId () const
	SoGeoProjection ()
Static Public Member Functions
static SoType	getClassTypeId ()
Public Attributes
SoSFEnum	ellipsoid
SoSFEnum	coordinateSystem
SoSFEnum	projection

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Detailed Description

Geospatial projection node

This property node defines a geospatial coordinate projection that will be applied to all subsequent shapes in the scene graph.

The projection used is either an instance of SbProj4Projection or an instance of SbSphericalProjection. To see the list of available projections, refer to SbProj4Projection.

The SbSphericalProjection instance will be chosen if the projection field is set to SPHERICAL. All other projections are provided by SbProj4Projection.

When an instance of SbProj4Projection is being used, you can set the coordinateSystem and ellipsoid to be used in the projection. An ellispoid definition is a mathematical representation used to approximate the earth when computing projections.

Available coordinate systems are :

• GEODETIC :
  • x coordinate : degrees longitudes from -180 to 180
  • y coordinate : degrees latitudes from -90 to 90
  • z coordinate : meters

• GEOCENTRIC :
  • x, y and z coordinate : meters

See SoProjection for limitations of coordinate projection nodes.

FILE FORMAT/DEFAULT

GeoProjection {

parameters	""
matrix	identity
isOn	true
floatParameters	1
projTypeId	0
coordinateSystem	GEODETIC
ellipsoid	WGS84
projection	CASSINI

}

SEE ALSO

SoProjection, SbProj4Projection

See related examples:

GeocentricProjection, GeodeticProjection

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Constructor & Destructor Documentation

SoGeoProjection::SoGeoProjection

(

)

Constructor.

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Member Function Documentation

static SoType SoGeoProjection::getClassTypeId

(

)

[static]

Returns the type identifier for this class.

Reimplemented from SoProjection.

virtual SoType SoGeoProjection::getTypeId

(

)

const [virtual]

Returns the type identifier for this specific instance.

Reimplemented from SoProjection.

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Member Data Documentation

SoSFEnum SoGeoProjection::coordinateSystem

Current coordinate system.

Use enum SbProj4Projection::CoordinateSystem. Default is GEODETIC.

SoSFEnum SoGeoProjection::ellipsoid

Current ellipsoid.

Use enum SbProj4Projection::PredefinedEllipsoid. Default is WGS84.

SoSFEnum SoGeoProjection::projection

Current Projection.

Use enum SbProj4Projection::Projection. Default is CASSINI.

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

• Inventor/nodes/SoGeoProjection.h