Programmers may define a line set as an array of polylines to accelerate hit-testing, pathfinding

https://wiki-burner.win/index.php/Mini_Split_Line_Set_Selection_Checklist_for_Contractors

Programmers may define a line set as an array of polylines to accelerate hit-testing, pathfinding, and collision detection, using spatial indices to swiftly query segments in large interactive scenes.