topic Question about Opacity/Alpha for animation in 3ds Max Forum

Question about Opacity/Alpha for animation

hasa22hf — Mon, 22 Apr 2024 09:37:21 GMT

I am currently working on an animation for an internship where I have to make modules for furniture appear and disappear, however when I've finished rendering and edited the photos into a movie I noticed that the visibility setting for each module makes the object transparent for a short while.

So my question is, is it possible to make it fade in and out instead like an alpha setting (something similar to what photoshop uses)?

I am not interested in showing what's inside of the module basically.

Pictures below show the transparency and another picture 2 frames after.

Thanks in advance.

- Sam

Re: Question about Opacity/Alpha for animation

leeminardi — Mon, 22 Apr 2024 15:04:39 GMT

Here's a way to fade visibility if rendering with Arnold since is does not support a visibility track.

https://youtu.be/lMRmfEeDfdE

Of course, if the renderer that you are using supports a visbility track then you can use it as shown here.

https://youtu.be/fY3pR0bZlUI

Re: Question about Opacity/Alpha for animation

hasa22hf — Tue, 30 Apr 2024 09:24:24 GMT

I have tried to animate object visibility but that makes object see through and shows a bunch of internal stuff.

I need them to fully fade in or out.

The first method seems promising, however I don't understand how to build that into my material tree using a more complex material and everything bound to a multi-sub object.

Re: Question about Opacity/Alpha for animation

hagen.deloss — Tue, 30 Apr 2024 23:31:47 GMT

Hi @hasa22hf ,

that is something I would normally suggest doing in post-production with a mask in compositing software.

If you really need the solution inside of 3ds Max, i see that @leeminardi 's suggestion seems feasible, Lee, can you offer some insight into getting this same effect that routes through a multi-sub object?

@hasa22hf just to clarify, are you saying that the object has a multimap material applied? Or that the object is comprised of multiple pieces and the map Lee suggested makes them all fade individually, not all at once? If it's the latter, I would duplicate a backup, and then combine the object for rendering purposes so you can quickly get that effect.

Warm regards,

Re: Question about Opacity/Alpha for animation

leeminardi — Wed, 01 May 2024 00:16:55 GMT

I think you can do it via channels. I'm traveling this week and do not have access to my CAD PC to check this out. I will look at fading multi subject materials this weekend.