Documentation / Node reference / code nodes
The ray from the active camera through the pointer, in world space.
Geometry
This is the 3D counterpart of code/Cursor: rather than where the pointer is on screen, it is the line through the scene that the pointer picks out. On its own a ray is not a position, because every point along it is under the cursor. To get one position you have to say where to stop, which is what code/Plane and code/RayPlaneIntersect are for: a ground plane plus this ray is an object that follows the cursor. It is the same ray the hover events raycast with, taken once per frame. Available inside a geo/Actor only.
Scenes you can open in the editor that teach this node.
An object that follows the mouse across a plane. The cursor ray is built in the graph and intersected with that plane, then an actor moves the object there on every tick.
geo/Actor code/CursorRay code/Plane code/RayPlaneIntersect
This page is generated from the engine, so it describes the release you can download. The same text is in the editor's Help panel next to the node itself.