#moving holes
4 messages in this thread
Here's a challenge for all you clever 3D Studio experts.
I have a scene with two boats moving around a lake independently. The boats are
open, so if I use a simple plane for the water it will appear that the boats
are flooded.
I could cut out the shape of the boat from the water plane, and attach the two.
Then move the water whenever I move the boat, but that only works for one
object. For independently moving objects, that technique fails.
I've already tried attaching sort of a "skirt" of water to the boat, and moving
it (and the boat) along open paths on a much more complex water plane, but
that's not so pleasant either.
So, can anybody think of a clean and efficient solution for this little
problem?
Looking forward to your advice…
Ocean.
Ocean,
You need to render the boats twice and then composite together in video post.
First render the complete scene and the water can be showing through the hull.
Next render just the boats with no ocean against a black background and with
alpha channel on. If there are any objects inside the boat you can render them
too, or if you rendered them in the first pass then you'll need to make them
matte objects (modify/object/ attributes). Then composite the 2 scenes together
in video post: the first layer is the complete scene, the second layer is the
boats (and possibly occupants) with alpha = queue alpha channel.
Thanks Martin.
You guys are incredible, I get my answer within a couple hours of posting!
(And here I thought I might have stumped you)
Ocean,
you're welcome. I hope the technique gives you the desired effect.