Aescripts 3d-to-2d-screenspace v0.2b Free Download
Takes a 3D position and creates an animated 2D null in it’s relative 2D screen-space. Select a 3D Layer and press ‘Link’ to tie a new null to the 3D point with an expression or press ‘Bake’ to convert the expression to keyframes straight away.
This can be useful when tracking 2D elements like light flares to 3D objects in your comp.
Future versions will include the ability to enable a checkbox to “delete original” (greyed out when ‘Link’ is selected).