C# - Alternative to a Decorator Pattern

I'm currently building a particle engine, with each particle having a unique set of 'constraints'.

Where a constraint is say, can not go off the screen, or cap the velocity to X.

These constraints would be set at compile time, and can not change.

I believe that the Decorator pattern could be applied here, however my understanding is that this is for more for changing constraints during run-time, and also would be quite performance taxing. What other alternatives are there?