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Polygon Editing

Some RoadRunner data models are polygon based, such as prop and marking polygons. This topic provides common steps to create, destroy, and modify these polygon instances.

For general information about selecting and deleting objects, see Fundamentals.

Create a New Polygon

  1. Select the polygon tool that corresponds to the type you want to create (for example, select the Marking Polygon Tool to build a marking polygon).

  2. Some tools require an appropriate asset to be selected in the Library Browser before a polygon can be created (for example, select a Polygon Marking Asset if you are creating a marking polygon).

  3. Ensure that no objects are selected (for example, by using the Edit > Deselect All option in the Menu Bar).

  4. Right-click (and optionally drag) to create a polygon with a single starting point. The new polygon will automatically be assigned the selected asset.

  5. Right-click (and optionally drag) to extend the polygon and add additional control points.

Add Control Points to a Polygon

There are two ways to add control points to a polygon.

Insert a Control Point Next to an Existing Point

  1. Select the polygon tool that corresponds to the type you want to modify (for example, select the Marking Polygon Tool to build a marking polygon).

  2. Select the polygon you want to edit.

  3. Select a control point next to the point you want to add.

  4. Right-click (and optionally drag) to add additional control points.

Insert Control Points by Splitting a Polygon Edge

  1. Select the polygon tool that corresponds to the type you want to modify (for example, select the Marking Polygon Tool if you want to build a marking polygon).

  2. Select the polygon you want to edit.

  3. Right-click (and optionally drag) the polygon edge where you want to insert a new control point.

Move a Control Point

  1. Select the polygon tool that corresponds to the type you want to modify (for example, select the Marking Polygon Tool to build a marking polygon).

  2. Select the polygon you want to edit.

  3. Click and drag a control point to move it to a new location.

Change the Tangents of a Polygon

See Tangent Editing.