Unigine.GeodeticsTransformer Class
This class is used to transform geodetic coordinates (latitude, longitude and altitude) to the 3D world position and vice versa.
Notice
Geodetics transformations are available only if GeodeticsPlugin is launched.
GeodeticsTransformer Class
Members
GeodeticsTransformer Get ( ) #
Returns a pointer to the existing geodetics instance.Return value
Pointer to the existing geodetics transformer instance. If GeodeticsPlugin is not launched, nullptr is returned.dmat4 GeodeticToWorld ( dvec3 geo_coords, bool rotate_to_en ) #
Transforms geodetic coordinates of the selected coordinate system to the 3D world coordinates: position and rotation (the Y axis is directed to the North, the X axis — to the East, and the Z axis — upwards).Arguments
- dvec3 geo_coords - Geodetic coordinates (lat,lon,alt).
- bool rotate_to_en - true to rotate data as follows: East => X, North => Y (ENU and similar systems); false if the data source uses another alignment (for example NED).
Return value
World position and orientation.dvec3 WorldToGeodetic ( dvec3 world_pos, bool rotate_to_en ) #
Transforms the 3D world coordinates to geodetic coordinates of the selected coordinate system.Arguments
- dvec3 world_pos - World position.
- bool rotate_to_en - true to rotate data as follows: East => X, North => Y (ENU and similar systems); false if the data source uses another alignment (for example NED).
Return value
Geodetic coordinates (lat,lon,alt).int SetProjectionWkt ( string projection_cs_wkt_string, dvec3 world_origin_geo_coords, string geodetic_cs_string, int geodetic_cs_is_well_known ) #
Sets a projection by WKT description, which is used as the world coordinate projection, and defines a geodetic coordinate system.Arguments
- string projection_cs_wkt_string - Description of the projection in the OpenGIS WKT format.
- dvec3 world_origin_geo_coords - World origin in geodetic coordinates (lat,lon,alt).
- string geodetic_cs_string - Description of a geodetic coordinate system.
- int geodetic_cs_is_well_known - 1 or 0.
If set to 1, a well-known coordinate system description is used as the geodetic_cs_string argument.
The following well-known text values are supported:
- WGS84 — same as EPSG:4326, but has no dependence on EPSG data files.
- WGS72 — same as EPSG:4322, but has no dependence on EPSG data files.
- NAD27 — same as EPSG:4267, but has no dependence on EPSG data files.
- NAD83 — same as EPSG:4269, but has no dependence on EPSG data files.
- EPSG:n — n is a GCS code from the horizontal coordinate system table.
If set to 0, a detailed WKT description is used.
Return value
1 on success; otherwise, 0.int SetProjectionEpsg ( int projection_cs_epsg_code, dvec3 world_origin_geo_coords, string geodetic_cs_string, int geodetic_cs_is_well_known ) #
Sets a projection by EPSG code, which is used as the world coordinate projection, and defines a geodetic coordinate system.Arguments
- int projection_cs_epsg_code - EPSG code of the projection.
- dvec3 world_origin_geo_coords - World origin in geodetic coordinates (lat,lon,alt).
- string geodetic_cs_string - Description of a geodetic coordinate system.
- int geodetic_cs_is_well_known - 1 or 0.
If set to 1, a well-known coordinate system description is used as the geodetic_cs_string argument.
The following well-known text values are supported:
- WGS84 — same as EPSG:4326, but has no dependence on EPSG data files.
- WGS72 — same as EPSG:4322, but has no dependence on EPSG data files.
- NAD27 — same as EPSG:4267, but has no dependence on EPSG data files.
- NAD83 — same as EPSG:4269, but has no dependence on EPSG data files.
- EPSG:n — n is a GCS code from the horizontal coordinate system table.
If set to 0, a detailed WKT description is used.
Return value
1 on success; otherwise, 0.Last update:
2022-03-05
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