addLine

Add new line segment to horizontal curve of segmented road

Since R2025a

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    Syntax

    addLine(segmentedCurve,length)

    Description

    addLine(segmentedCurve,length) creates a new line segment and adds it to the end of the horizontal curve of the road specified by segmentedCurve. Extract the horizontal curve of the road, and use the resulting SegmentedRoadCurve object to extend the road by appending additional road segments.

    example

    Examples

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    Create a roadrunner object, specifying the path to an existing project. For example, this code shows the path to a project, on a Windows® machine, located at "C:\RR\MyProject". This code assumes that RoadRunner is installed in the default location, and returns an object, rrApp, that provides functions for performing basic tasks such as opening, closing, and saving scenes and projects. 

    rrApp = roadrunner(ProjectFolder="C:\RR\MyProject");

    Note

    If you are opening RoadRunner from MATLAB® for the first time, or if you have changed the RoadRunner installation location since you last opened it from MATLAB, you can use the roadrunnerSetup function to specify new default project and installation folders to use when opening RoadRunner. You can save these folders between MATLAB sessions by selecting the Across MATLAB sessions option from the corresponding drop down.

    Create a new scene in RoadRunner by using the newScene function, specifying the roadrunner object rrApp. 

    newScene(rrApp)

    Create a RoadRunner authoring API object, rrAPI, that references the object for the current RoadRunner instance rrApp. The rrApi object enables you to programmatically author scenes, such as by adding and modifying road and lane components, using MATLAB.

    rrApi = roadrunnerAPI(rrApp);
    Extract the object for your scene from the Scene property of the authoring API object rrApi. The extracted Scene object enables you to specify the scene in which to add scene components, such as roads and lanes. 
    scn = rrApi.Scene;

    Specify the control points of the starting point forward direction of a road as positions along the X- and the Y- axes of the RoadRunner local coordinate system. Then, use the addSegmentedRoad function to add a segmented curve type road to the scene.

    startPoint = [-100 0];
startRoadDirection = [1 0];
rrRoad = addSegmentedRoad(scn,startPoint,startRoadDirection);

    Extract the horizontal curve of the segmented road. Then, use the addLine function to create a line segment and add it to the horizontal curve.

    segmentedCurve = rrRoad.HorizontalCurve;
addLine(segmentedCurve,50)

    Input Arguments

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    Horizontal curve of a segmented road, specified as a SegmentedRoadCurve object.

    Length of the new line segment, in meters, specified as a numeric scalar.

    Data Types: double

    Version History

    Introduced in R2025a

    See Also

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