Lock ray
Raycasting in two phases: lock the ray on a set of candidates, then move a cursor along it to pick one.
How it works
After pointing, the ray is locked in place and the user moves a depth marker along it to the intended target among those it intersects.
Papers
- Ferran Argelaguet, Carlos Andujar (2013). A survey of 3D object selection techniques for virtual environments. Computers & Graphics doi:10.1016/j.cag.2012.12.003
- Tovi Grossman, Ravin Balakrishnan (2006). The design and evaluation of selection techniques for 3D volumetric displays. ACM Symposium on User Interface Software and Technology (UIST) doi:10.1145/1166253.1166257