Editor facility for creating and editing collision shapes in 2D space. You can use this node to represent all sorts of collision shapes, for example, add this to an [Area2D] to give it a detection shape, or add it to a [PhysicsBody2D] to create a solid object. [b]IMPORTANT[/b]: this is an Editor-only helper to create shapes, use [method CollisionObject2D.shape_owner_get_shape] to get the actual shape.
The margin used for one-way collision (in pixels). Higher values will make the shape thicker, and work better for colliders that enter the shape at a high velocity.