intersection_area_segment_type

Validator name

mapping.intersection.intersection_area_segment_type

Feature

This validator check whether each intersection_area type polygon is made from points that belong to road_border type linestrings or the starting/ending edge of a lanelet.

This is achieved by the following procedure.

1. Create a 2D bounding box that circumscribes the polygon.
2. Collect road_border type linestrings within or intersecting the 2D bounding box.
3. Collect starting/ending edges of lanelets within or intersecting the 2D bounding box.
4. Examine each point that constitutes the polygon whether it belongs to the collection above.

The validator outputs the following issue with the corresponding ID of the primitive.

Issue Code	Message	Severity	Primitive	Description	Approach
Intersection.IntersectionAreaSegmentType-001	"This intersection area is not made by points from road_border linestrings or lanelet edges. (Point ID: \<POINT ID LIST>)"	Error	Polygon	The intersection_area polygon has points that doesn't belong to road_border type linestrings or lanelet edges. The violating points are listed up at \<POINT ID LIST>.	Ensure that the intersection_area is formed ONLY by road_border linestrings and lanelet edges.

Supplementary information

Note that this validator only examines what type of linestring the points constituting the polygon belongs to, and doesn't examine they have a valid connection. Use the mapping.intersection.intersection_area_validity to check whether the polygon is boost::geometry::is_valid().

Related source codes

• intersection_area_segment_type.hpp
• intersection_area_segment_type.cpp