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World Settings Tool

World Settings Tool button

The World Settings Tool is used to configure the geographic position and size of the environment model.

RoadRunner allows models to optionally be georeferenced, meaning they are built to match a particular location on the surface of the Earth.

For more information about the coordinate system used in RoadRunner, refer to Coordinate Space and Georeferencing.

Working with GIS Data

Ideally, set the desired latitude and longitude in your scene before importing any GIS files or before starting to model any roads. To do so, follow the instructions in the Specify an Initial Latitude/Longitude Origin for the Scene section. This enables you to enter explicit latitude and longitude values.

Another option is to center the origin on the first GIS file imported. RoadRunner does this automatically if you try to drag a GIS file into the scene without having set the origin. Once the origin is set, any additional GIS files brought in are positioned relative to the specified origin.

Note that you can always adjust your world origin later, though it is recommended to make all adjustments prior to creating any roads or other scene elements. Changing the world origin after GIS files have been imported will change the map projection and will require all GIS files to be reloaded and reprojected. This is done automatically when you change the origin.

Scene Workspace

The scene workspace defines the rectangular size of the environment model. This rectangular region is referred to as the workspace and is based on a center XY coordinate (in meters relative to the origin) and an XY rectangle size, defined in meters.

Because GIS data can get quite large, RoadRunner loads only GIS data that lies within the workspace. The scene workspace is also used for export. The visual scene is geometrically clipped against the scene workspace during export.

The workspace dimensions can be easily changed at any time using the steps in Change the Workspace Size and Location.

Specify an Initial Latitude/Longitude Origin for the Scene

  1. Click the World Settings Tool button.

  2. Enter the desired latitude and longitude that you want to use as the origin of the scene in the World Origin section of the Attributes Panel.

  3. Click the Apply World Changes button on the Attributes Panel.

Clear the Geographic Position

  1. Click the World Settings Tool button.

  2. Press the Clear World Projection button in the Attributes Panel.

  3. A warning dialog appears, saying that clearing the projection invalidates imported GIS files. To proceed, press the Clear button.

Center the Geographic Position on an Existing GIS File

  1. Click the World Settings Tool button.

  2. Click the GIS file you want to center the projection on.

  3. Press the Center World on Selected button in the Attributes Panel.

  4. Press the Apply World Changes button in the Attributes Panel.

  5. A dialog box appears, asking if you want to just change the world projection (the Only Change Projection button) or if you want to transform the model to the new projection (the Transform Scene button). See the note on changing world settings to determine the appropriate action and click the appropriate button.

Change the Origin of the Environment to a Specific Latitude/Longitude

  1. Click the World Settings Tool button.

  2. Enter the desired latitude and longitude that you want to use as the origin of the scene in the World Origin section of the Attributes Panel.

  3. Click the Apply World Changes button on the Attributes Panel.

  4. A dialog appears, asking if you want to just change the world projection (the Only Change Projection button) or if you want to transform the model to the new projection (the Transform Scene button). See the note on changing world settings to determine the appropriate action and press the appropriate button.

Alternatively, follow these steps:

  1. Click the World Settings Tool button. Locate the green circular mark indicating the World Origin.

  2. Click and drag the World Origin mark to the desired new origin position.

  3. Click the Apply World Changes button on the Attributes Panel.

  4. A dialog appears, asking if you want to just change the world projection (the Only Change Projection button) or if you want to transform the model to the new projection (the Transform Scene button). See the note on changing world settings to determine the appropriate action and press the appropriate button.

Note

To transform a scene, you have two options:

  • Only Change Projection: Use this option if want to change the origin without moving any scene objects. This changes the lat/long locations of the objects but preserves their local (XY) coordinates.

  • Transform Scene: Use this option if want to change the origin and move objects to preserve their location on the earth. This changes the local (XY) coordinates of the objects but preserves their geographic (lat/long) coordinates.

Change the Workspace Size and Location

  1. Click the World Settings Tool button.

  2. Enter the desired workspace parameters (Center and Extents) on the Attributes Panel.

Alternatively, follow these steps:

  1. Click and drag inside the blue World Origin box in the 3D Edit Window to move the center of the workspace.

  2. Click and drag the edges or corners of the blue World Origin box to change the dimensions of the workspace.

  3. Click the Apply World Changes button on the Attributes Panel.

Note

Changing the workspace does not remove or modify any data in the scene. When working with large GIS files, it can be useful to shrink the workspace to view only the portion of the file you want to view at a given time. However, remember to increase the workspace size again before exporting.