Deleting points not in line of sight for my object

[Kongfu]

 

 

Hello. I need to delete points, which is obscured by other points.

I want to emit lightning from center of my sphere, but dont want it to go through geomentry. Is there a way to get around?

My thought was no delete points based on normal direction, but it doesnt work 100% correct.

 

 

Reference #1 starts at 1:16        

Reference #2 

[petz]

http://forums.odforce.net/topic/5854-direct-visibility-of-point-sets/

[Kongfu]

Thanks, it worked! Kinda slow tho, so i'm probably going to try to find some better way. May be will get volumes from geo and check if my lightning traverse through it.

[kleer001]

I would use the Ray SOP (aimed from your source to your destination) to create the surface you're going to interact with, instead of starting with the points on the surface already.

[Rainroom]

Here is a method that I frequently use to address the same issue that you are having:

visibility_cull.hipnc

[Kongfu]

Wow! IT is very cool and fast! I was about to write vex, so my point would shoot rays in every direction until it finds a point or reaches maximum distance, but that's way more elegant! 

Thank you very much