Coordinates

Coordinates#

The LevelCoordinates actor is used to georeference your level. It lets you specify a coordinate system, the longitude and latitude of a real-world location, and the number of Unreal Engine units (cm) per longitude/latitude unit. The location that you choose in the LevelCoordinates corresponds to the (0, 0) location of Unreal Engine. You can use epsg.io to find real-world coordinates in EPSG 4326 (this works better in Chrome than in Firefox in my experience). You can also change the URL if you need coordinates in another EPSG.

In the LevelCoordinates Details Panel, you can create a Decal with a World Map using the coordinate system (use “EPSG:4326” if you want the usual longitude/latitude coordinates).

You can add an ActorCoordinates component to an actor that you wish to place on a particular real-world location. Clicking the Move Actor button on this component will move the actor correctly with respect to the LevelCoordinates.

If you are creating landscapes using a LandscapeSpawner, a LevelCoordinates actor will be created automatically for some well-known coordinate systems such as EPSG:4326, EPSG:2056, EPSG:2154, CRS:84.

Level Coordinates Settings#

Level Coordinates

  • Global Coordinates (UGlobalCoordinates)

Level Coordinates > World Map

  • Use Local File (bool, default false)

  • Path To Georeferenced World Map (FString)

  • Width (int, default 2048)

  • Height (int, default 2048)

Global Coordinates Settings#

Global Coordinates

  • CRS (FString, default "EPSG:4326"): Coordinate System

  • Cm Per Long Unit (double, default 11111111): Number of Unreal Engine centimeters per longitude coordinate system unit

  • Cm Per Lat Unit (double, default -11111111): Number of Unreal Engine centimeters per latitude coordinate system unit

  • World Origin Long (double, default 0): Longitude of the World Origin (in the given Coordinate System)

  • World Origin Lat (double, default 0): Latitude of the World Origin (in the given Coordinate System)

Actor Coordinates Settings#

Coordinates

  • CRS (FString, default "EPSG:4326"): Coordinate System

  • Longitude (double, default 0): Longitude

  • Latitude (double, default 0): Latitude