Thanks.. That helps some. Altough I’m using Trapcode Particle. I do see an “Obsecure with” section under Visibility, but I’m not sure I have the mask defined correctly. Heres what I did.
I Made a new Solid ( Gray Solid 1) and “Drew” a circle with the pen tool.
Rlight clicked on that solid, added the effect and tried to set the “Obsecure” with (Gray Solid 1) was the only option listed in the pulldown.
I get error; “The particle layer itself, cannot be used to obsecure particles”
Am I getting close? I tried making another solid, and converting the layer to 3d and assigning it to the obsecure, but all the particles were just under that layer, and they did not stay in the boundries. 🙁
I appreciate the assistance. Many Thanks.