USD Schemas

omniGeospatial

OmniWGS84ReferencePositionAPI

Defines parameters for a target reference point for translating geodetic WGS84 positions represented as (longitude, latitude, altitude) to Cartesian (x, y, z) coordinates in the specified tangent plane. Altitude units are defined in meters regardless of the stage metersPerUnit value. This reference point corresponds to a cartesian point by first transforming the geodetic coordinates to the Earth Centered Earth Fixed (ECEF) coordinate system followed by a transformation to either the ENU or NED local coordinate system, depending on the value of the tangentPlane attribute.

omni:geospatial:wgs84:reference:orientation

Orientation by Yaw, Pitch, and Roll (YPR) rotations about z, y, x axes.

omni:geospatial:wgs84:reference:referencePosition

Geodetic coordinate represented as (latitude, longitude, altitude) defining the point from which the tangent plane target is derived.

omni:geospatial:wgs84:reference:tangentPlane

Name of the tangent plane target coordinate frame for the geodetic transform. This can be either East-North-Up (ENU) or North-East-Down (NED).

OmniWGS84LocalPositionAPI

Defines a local geodetic WGS84 style position represented as (longitude, latitude, altitude). This position is always relative to a reference position defined by the same or parent prim using the OmniGeospatialWGS84ReferencePositionAPI schema.
If no prim is defined in the parent hierarchy with a reference position definition, this schema should be ignored. Otherwise, the cartesian position of this prim should be calculated relative to the first reference position in the parent hierarchy.

NOTE: It is undefined to have both a WGS84ReferencePositionAPI and WGSLocalPositionAPI schema applied to the same prim.

omni:geospatial:wgs84:local:position

Specifies the geodetic position of the prim (relative to a reference position in the prim hierarhcy) as a WGS84 coordinate as (latitude, longitude, altitude) where longitude and latitude are defined in degrees and altitude as height in meters above the surface. This height is always in meters, regardless of what is defined as metersPerUnit for the stage.