How to Get point clouds within the projection range of Polygon2d? No matter what the Z value is?

[YNBTools]

Aardvark.Geometry.PointSet:
I want to Get point clouds within the projection range of Polygon2d，No matter what the Z value is。
If it is for the sake of speed, filtering can only be considered by projecting onto the XY plane.
It can also provide a function that can be projected onto any surface and filtered using the Polygon3d and plane parameters.
Just like QueryPointsNearPolygon, except it's 3D spatial filtering.