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Changing an obects visibility over time

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David Lee
Changing an obects visibility over time
on Oct 24, 2010 at 7:47:29 pm

Hello all,
I had a quick look in the forums for an answer but could not see any.

I am rendering a short animation where i want an object to be totally invisible at frame 1 and over a period of time say 200 frames, appear totally visible. The object appears out of thin air.

I hear about visibility tracks but all I get is either on or off (1 or 0) visibility but I want a gradual appearance.
Is this possible?

Thank you


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Stuart Christensen
Re: Changing an obects visibility over time
on Oct 25, 2010 at 1:38:11 am

Hello David, if the object is the same color, you can keyframe the opacity of the shader. Check out my tutorial on You-Tube here;







This is a simple way to achieve transparent to opaque effects.

Hope that helps. STU

I know alot....but not as much as the other guy.


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craig whit
Re: Changing an obects visibility over time
on Oct 25, 2010 at 5:34:53 am

Can this be done in comp rather than the render?

Craig Whitaker
MFA Candidate
New York University
http://www.craigwhitaker.net


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David Lee
Re: Changing an obects visibility over time
on Oct 25, 2010 at 8:34:53 am

What do you mean Comp Chris? Computer?


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Michael Frank
Re: Changing an obects visibility over time
on Oct 25, 2010 at 4:09:31 pm

By comp he means can you do the visibility animation in compositing?

If all you need is for the character/object to fade in.. Render that object as a separate layer and keyframe opacity in After FX or your preferred compositor.

Mike Frank
Cave House Studios


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David Lee
Re: Changing an obects visibility over time
on Oct 25, 2010 at 8:34:11 am

Stuart,
Thank you so much that worked great.
I was trying all sorts of things and I thought that it would be like MAX's visibility track where you can assign a bezier fade out but this works for me thanks.

ps I tried it with a phong material and that worked too but its a bit complicated with a mentalray material and I haven't had any luck with that yet.
Thanks again

Dave


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