Reply To: Why does the ray fire from the cage’s edge along the average normal?
Like Spikey, I’m not entirely understanding of how this works.
I would suspect by enabling the cage option in the bake properties may alter the normals.
On further reading, the blender manual says,
When not using a cage the rays will conform to the mesh normals. This produces glitches on the edges, but it is a preferable method when baking into planes to avoid the need of adding extra loops around the edges.
The inward rays are casted from a version of the active object with disabled Edge Split Modifiers.
The normals (rays) as I understand it, on the cage object the angles of the rays are dependent on position.
Something like this:
These are not exact angles but a guide