h2d.col

..
Bounds	A 2D bounding box often used for determining Object bounding area.
Cell	The resulting cell inside the Voronoi diagram.
Circle	The circular hitbox implementation of a 2D Collider.
Collider	A common interface for 2D Shapes to hit-test again the mouse or a specific point in space.
Delaunay	A Delaunay triangulation utility. See `Delaunay.triangulate`.
DelaunayTriangle	The resulting triangle of a Delaunay triangulation operation.
Diagram	The resulting diagram of the `Voronoi.compute`.
Edge	The resulting edge inside the Voronoi diagram.
Halfedge	The edge attached to a Voronoi `Cell`.
IBounds	An integer-based bounding box.
IPoint	An integer-based point.
IPolygon	An abstract around an Array of `IPoint`s that define a polygonal shape that can be collision-tested against.
IPolygons	An abstract over an Array of `IPolygon` instances that define multiple polygonal shapes that can be collision-tested against.
Line	An infinite 2D line going through two specified Points.
Matrix	An affine 2D 2x3 matrix.
OffsetKind	The type of the edges when offsetting polygon with `IPolygon.offset`.
PixelsCollider	An `hxd.Pixels`-based collider. Checks for pixel color value under point to be above the cutoff value.
Point	A simple 2D position/vector container.
Polygon	An abstract around an Array of `Point`s that define a polygonal shape that can be collision-tested against.
PolygonCollider	A `Collider` wrapper around `Polygons` to enable using those for hit-testing testing.
Polygons	An abstract over an Array of `Polygon` instances that define multiple polygonal shapes that can be collision-tested against.
Polynomial	See `Polynomial.regress`.
Ray	A raycast from the given position in a specified direction.
RoundRect	A Collider representing the rectangle with the rounded edges, forming a 2D capsule.
Segment	A 2D line segment.
Segments	An abstract over the list of `Segment`s. Alternative representation of a polygon.
Triangle	A simple triangle collider.
Voronoi	A Steven Fortune's algorithm to compute Voronoi diagram from given set of Points and a bounding box.