mtPointProject, projecting a Cube over a Sphere, with the Type set to Hemisphere.
For each point of a child object, a ray is cast into the scene; this checks for a collision with objects listed in a node tree.
On a successful collision, the resulting point is moved to lie flat on the surface.
mtPointProject, Projector tab settings menu.
Selection options act similarly to all other mesh tools. They limit the effect of the tool to chosen points.
An optional selection set of the child object, which limits the projection to only those selection.