SoGeoOrigin Class Reference
[Geographic nodes]
Specifies a local geospatial coordinate system.
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#include <Inventor/geo/SoGeoOrigin.h>
Public Member Functions | |
| virtual SoType | getTypeId () const |
| SoGeoOrigin () | |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
Public Attributes | |
| SoSFVec3d | geoCoords |
| SoMFString | geoSystem |
| SoSFBool | rotateYUp |
Detailed Description
Specifies a local geospatial coordinate system.
The SoGeoOrigin node specifies a local coordinate system for increased floating point precision.
VRML X3D SPECIFICATION
- This section describes the expected behavior of the node in a conforming X3D / VRML97 browser application. In some cases, the application is responsible for implementing portions of the expected behavior. Open Inventor viewer classes and IVF classes implement some of the application behaviors.
This section may reference portions of the X3D specification that are not present in this help file. The complete X3D spec is available at http://www.web3d.org .
The SoGeoOrigin node defines an absolute geospatial location and an implicit local coordinate frame against which geometry is referenced. This node is used to translate from geographical coordinates into a local Cartesian coordinate system which can be managed by a viewer. The geoCoords field is used to specify a local coordinate frame for extended precision as described in 25.2.5 Dealing with high-precision coordinates. The geoSystem field is used to define the spatial reference frame and is described in 25.2.3 Specifying a spatial reference frame. The rotateYUp field is used to specify whether coordinates of nodes that use this GeoOrigin are to be rotated such that their up direction is aligned with the X3D Y axis. The default behavior is to not perform this operation. This means that the local up direction will depend upon the location of the GeoOrigin with respect to the planet surface.
FILE FORMAT/DEFAULT
- GeoOrigin {
| geoCoords | 0 0 0 |
| geoSystem | ["GD","WE"] |
| rotateYUp | FALSE |
ACTION BEHAVIOR
- SoGLRenderAction, SoGetBoundingBoxAction, SoCallbackAction
- GC: Earth-fixed Geocentric with respect to the WGS84 ellipsoid.
- GD: Geodetic spatial reference frame.
An optional second string may be used to specify the ellipsoid using one of the ellipsoid codes that are defined in X3D. If no ellipsoid is specified, then "WE" is assumed (the WGS84 ellipsoid). - UTM: Universal Transverse Mercator
One further required argument must be supplied for UTM in order to specify the zone number (1..60). This is given in the form "Zn", where n is the zone number. An optional argument of "S" may be supplied in order to specify that the coordinates are in the southern hemisphere (otherwise, northern hemisphere will be assumed). - Inventor/geo/SoGeoOrigin.h
Constructor & Destructor Documentation
| SoGeoOrigin::SoGeoOrigin | ( | ) |
Constructor.
Member Function Documentation
| static SoType SoGeoOrigin::getClassTypeId | ( | ) | [static] |
Returns the type identifier for this class.
Reimplemented from SoNode.
| virtual SoType SoGeoOrigin::getTypeId | ( | ) | const [virtual] |
Returns the type identifier for this specific instance.
Reimplemented from SoNode.
Member Data Documentation
Specifies the local coordinate frame.
Defines the spatial reference frame.
Valid values are:
Specifies whether coordinates of nodes that use this GeoOrigin are to be rotated such that their up direction is aligned with the world coordinate Y axis.
The default behavior is to not perform this operation. This means that the local up direction will depend upon the location of the GeoOrigin with respect to the planet surface.
The documentation for this class was generated from the following file: