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How do I do Tansparency Animation?
show user profile  smerf1
Like make an object appear at a certain time in the time line.
read 363 times
11/5/2011 11:26:09 AM (last edit: 11/5/2011 11:26:09 AM)
show user profile  smerf1
Or how do I make the object transparent? instead of the material
read 359 times
11/5/2011 11:31:40 AM (last edit: 11/5/2011 11:31:40 AM)
show user profile  advance-software
coud hide it or vertex colour alpha.

read 356 times
11/5/2011 11:35:06 AM (last edit: 11/5/2011 11:37:20 AM)
show user profile  smerf1
How do I hide it? If you mean right click and hide selected, that doesn't work with animation. I need my object to not be there in frame 1, but it needs to apear in frame 2.
read 351 times
11/5/2011 11:40:17 AM (last edit: 11/5/2011 11:40:17 AM)
show user profile  jareu
right click and change visibility. I think it's animatable. otherwise I'd just move it off camera for that frame and then change the curve to linear.

He who says it cannot be done is interrupting the man doing it.

read 349 times
11/5/2011 11:48:10 AM (last edit: 11/5/2011 11:48:10 AM)
show user profile  mrgrotey
Yeah, if you want it to suddenly appear with no gradual fade then just have it off camera, out of view then move it into place in a single frame.

Or you can animate the visibility spinner in the objects properties. (Fading the spinner will only work in scanline)

Or animate the material (but you dont want that)

read 344 times
11/5/2011 1:05:55 PM (last edit: 11/5/2011 1:05:55 PM)
show user profile  peterjung
I do not think that transparency is supported by the Mental Ray renderer. I suggest using VRay for animations with transparency.

Here is how I do it:

Select your object that you want to have transparent

Right Click and Select "Curve Editor" from the popup menu

In the Curve Editor select "Tracks" from the menu bar and then "Visibility" and "Add"

This will now add a Visibility parameter to the object properties as shown in the tree in the left hand part of the Track View in the Curve Editor.

You can then select this parameter and add points on the curve to change the value with respect to the timeline. i.e. 1 is fully visible 0 is invisible and anywhere in between are various levels of transparency.

I use this a lot when making animations of mechanical machines to explain the inner workings. For an example see the link below where I animated the transparency of a gear box casing to gradually reveal the inner gearing.

read 317 times
11/7/2011 10:33:47 AM (last edit: 11/7/2011 10:34:36 AM)
show user profile  mrgrotey
Eh?! Of course transparency is supported, its a high-end rendering solution!

The visibility spinner is the only issue, there you can only have a value of 1.0 or 0 nothing in between. But as he wants this over a single frame there no issue. ...and certainly no need to go and buy vray to do it :)

read 311 times
11/7/2011 10:53:03 AM (last edit: 11/7/2011 11:45:39 AM)
show user profile  peterjung
I stand corrected! Thank you Mr Grotey!

I was thinking a gradual transparency fade rather than visible / invisible....

read 299 times
11/7/2011 11:39:17 AM (last edit: 11/7/2011 11:39:17 AM)
show user profile  Dave
Just so we're clear, Mental Ray can handle a gradual transparency fade just fine too.

"I flew over Egypt once"

read 284 times
11/7/2011 2:35:00 PM (last edit: 11/7/2011 2:35:00 PM)
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