Daredevil themovie type graphics filter

I was wondering if it would be possible to add some kind of graphics-filter that would visually represent collider data. I am working on a submarine simulation(kinda) and was wondering how I can possibly represent sonar visually.

  • Sorry if this is not suitable for

    answers but I have Unity 3 pro for 30
    days I would really love to earn

    enough money to keep it.

    Comp. Game designer / Hobbyist for 20+yrs now 1st computer Atari 800XL 50$ got tons of extras for that price in those days too :)

Sure, why not. Create a prefab object that looks like the effect you want, and have it fade out for 1 second before destroying itself. Instantiate that prefab when (and where) the collision occurs.