ray_pyembree: intersects_location and intersects_any yielding different outputs

[mokrueger]

Hi there.

I noticed a tiny bug with the intersects_id and intersects_first function in ray_pyembree.py. I have been using intersects_any to get the "hit_mask" to see which rays hit the object (for multiple_hits=False) and I noticed that the number of hits returned was off by 1 compared to intersects_location (which uses intersects_id).

After checking the code, I noticed that intersects_id converts to np.float64 as well as calls util.unitize on the ray_direction, which causes the difference.

I am guessing it would make sense to perform the same input validations in these functions to ensure everything works as expected.

Kind regards ;)