How to make a Funnel Shaped Particle system?

[Luos (Luos_83)]

@RyanB;458512

Not sure if you have seen this but in gears3, Thomas Browett made a really sweet tornado for a Multiplayer map. It was basically a fancy funnel shaped mesh with cool materials, and used fresnel to control the edge opacity.

https://www.youtube.com/watch?v=EWCHdKFHSM4

http://images.thisisxbox.com/2012/02/Gears-Artillery.png

raymarching sounds cool too, but it might be a lot slower for something that can probably be just as good using regular materials. Ie in the above example that could just be a mesh and the vertex shader could do the random motion part.

Hey Ryan!
Good find, Will take it with me when I am going to attempt to make a tornado this weekend. (attempt 5+)