Hi all
How to make praticles visible only in ray light volume? Good reference is “Inside” game:
You can just do a cone function and apply that as the alpha inside of the particles. I made an example showing how to do that here:
You just need to update the Position and Orientation, using either Material Instance Dynamics or Material Parameter Collections.
You could make the core brighter by using a Power with variable exponent. If you want to use the inverse squared law you will need to apply a further term of Distance^2 to darken with distance, or just use a falloff function that looks nice.
This same kind of question seems to be very popular lately!
Many thanks!