working with shadows

Hi,
I didnt plan in advance , i want to exclude few objects from casting a shadow,
such as ray beams.
any tips about how to do it without too much work ?

thank you !
Barak.

*Noticed shadows cost lots of computation time.

Hey Barak, in the past, I’ve had to get around this by giving my geometry prefixes that I then reference in the lights. For example, for anything I didn’t want to have a shadow, I might put the prefix ns, such as ns_geo1. Then in the light’s shadow parameter I would include ^ns_* to exclude any geometry that had this prefix. I’ve attached a simple example TOX.
omit_shadows.tox (2.65 KB)