SoVRMLGeoViewpoint Class Reference
[GeoVRML 1.1 Nodes]
Specifies position from which the user might view the scene.
Action not implemented for this node.
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#include <Inventor/geo/SoVRMLGeoViewpoint.h>
Public Member Functions | |
| virtual SoType | getTypeId () const |
| SoVRMLGeoViewpoint () | |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
Public Attributes | |
| SoSFNode | geoOrigin |
| SoMFString | geoSystem |
| SoSFBool | headlight |
| SoMFString | navType |
| SoSFFloat | speedFactor |
Detailed Description
Specifies position from which the user might view the scene. Action not implemented for this node.
The SoVRMLGeoViewpoint node defines a specific location in a local geospatial coordinate system from which the user might view the scene.
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 SoVRMLGeoViewpoint node allows the specification of a viewpoint in terms of a geospatial coordinate. This node can be used wherever a Viewpoint node can be used and can be combined with Viewpoint nodes in the same scene. The fieldOfView, jump, description, set_bind, bindTime, and isBound fields and events have the same behavior as the standard Viewpoint node. When a SoVRMLGeoViewpoint node is bound, it overrides the currently bound Viewpoint and NavigationInfo nodes in the scene. The geoOrigin 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 position is used to define the actual coordinate at which the viewpoint is to be located. It should be provided in a format consistent with that specified by geoSystem. There is also a set_position field which can be routed from the geovalue_changed field of a GeoPositionInterpolator node in order to animate the position of the SoVRMLGeoViewpoint. The orientation string defines a relative orientation from the local orientation frame that is defined by the position field. By default, the orientation of the viewpoint will always be aligned such that the +Y axis is the up vector for the local area (the normal to the tangent plane on the ellipsoid), -Z points towards the north pole, and +X is east. Therefore, if a SoVRMLGeoViewpoint is created that always looked straight down, no matter where on the planetary body is being observed, an orientation value of [ 1 0 0 -1.57 ] is used. The set_orientation field can be routed to the value_changed field of an OrientationInterpolator in order to animate the orientation of the SoVRMLGeoViewpoint. The navType field is used to specify the navigation type that is to be bound when this SoVRMLGeoViewpoint node is bound. The acceptable values for this field are the same as those for the type field of the NavigationInfo node. The headlight field is used to specify the whether the viewer shall turn on a headlight when this viewpoint is bound. A headlight is a directional light that always points in the direction that the user is looking. The SoVRMLGeoViewpoint node may be implemented as if there is an embedded NavigationInfo node that is bound and unbound with the SoVRMLGeoViewpoint node. The speedFactor field of the SoVRMLGeoViewpoint node is used as a multiplier to the elevation-based velocity that the node sets internally; i.e., this is a relative value and not an absolute speed as is the case for the NavigationInfo node.
FILE FORMAT/DEFAULT
- VRMLGeoViewpoint {
| description | "" |
| fieldOfView | 0.785398 |
| headlight | TRUE |
| jump | TRUE |
| metadata | NULL |
| navType | ["WALK","ANY"] |
| geoOrigin | NULL |
| geoSystem | ["GD","WE"] |
| orientation | 0 0 1 0 |
| position | 0 0 100000 |
| speedFactor | 1.0 |
EVENTS
- Deprecated:
-
Deprecated since Open Inventor 9500
The VRML API is no longer supported. See section http://oivdoc95.vsg3d.com/content/compatibility-notes-4#Deprecation of the Reference Manual. - 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 "Z<n>", 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/SoVRMLGeoViewpoint.h
eventIn
| SoSFBool | set_bind (Note: Not implemented) |
| SoSFFloat | set_fieldOfView (Note: Not implemented) |
| SoSFBool | set_headlight (Note: Not implemented) |
| SoSFBool | set_jump (Note: Not implemented) |
| SoSFRotation | set_orientation (Note: Not implemented) |
| SoSFVec3f | set_position (Note: Not implemented) |
| SoSFString | set_description (Note: Not implemented) |
| SoMFString | set_navType (Note: Not implemented) |
| SoSFNode | set_metadata (Note: Not implemented) |
eventOut
| SoSFTime | bindTime (Note: Not implemented) |
| SoSFBool | isBound (Note: Not implemented) |
| SoSFFloat | fieldOfView_changed (Note: Not implemented) |
| SoSFString | description_changed (Note: Not implemented) |
| SoSFBool | headlight_changed (Note: Not implemented) |
| SoSFBool | jump_changed (Note: Not implemented) |
| SoMFString | navType_changed (Note: Not implemented) |
| SoSFNode | metadata_changed (Note: Not implemented) |
Constructor & Destructor Documentation
| SoVRMLGeoViewpoint::SoVRMLGeoViewpoint | ( | ) |
Constructor.
Member Function Documentation
| static SoType SoVRMLGeoViewpoint::getClassTypeId | ( | ) | [static] |
Returns the type identifier for this class.
Reimplemented from SoVRMLViewpoint.
| virtual SoType SoVRMLGeoViewpoint::getTypeId | ( | ) | const [virtual] |
Returns the type identifier for this specific instance.
Reimplemented from SoVRMLViewpoint.
Member Data Documentation
An SoVRMLGeoOrigin node specifying the origin of the local coordinate system.
Defines the spatial reference frame.
Valid values are:
(Note: Not implemented) Specifies whether the headlight should be turned on (TRUE).
This field can be used to set the headlight on or off in IVF.
(Note: Not implemented) Specifies a navigation paradigm to use.
You may specify "ANY". If this field is set to anything but "ANY", the type is used to set the viewer type in IVF.
(Note: Not implemented) A multiplier
The documentation for this class was generated from the following file: