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Carrara F.A.Q (Last Updated: 2025 Jan 26 7:30 pm)

 

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Subject: How do I make fluid in a glass?


ravenous ( ) posted Sun, 15 August 2010 at 5:35 PM · edited Mon, 03 February 2025 at 4:40 PM

Hi all!

I made a model of a glass, and I'd like a bunch of them in a picture with different amount of wine in them. First I figured I have to make a separate mesh for the actual fluid and place inside each glass. Meaning I'd have to create a mesh for each glass since I want different amount in them.

That would work but I figured there must be an easier way. For a while I was thinking of creating a particle emitter for each glass, filling them up with metalballs that would create an illusion of wine. And then render some frame after each glass is filled to various amount. But this doesnt actually sound easier.

Is there some smart way of creating fluid inside a glass in Carrara? I mean, other than create the shape by hand?


sdnoble ( ) posted Sun, 15 August 2010 at 5:47 PM

 I have never been able to make the emitter solution work, though that's likely to be due my lack of skill with it.  I am in the habit of cutting the inner wall of the glass at the level I want my liquid and capping that mesh so it can be textured separately.  That way there is no issue from adjacent meshes interfering with each other.  Using the inner wall of the glass shortcuts the creation of a mesh for each container.

You can also get detailed and add a meniscus fairly easily with that method.

See http://www.renderosity.com/mod/gallery/index.php?image_id=633430&user_id=55668&np&np before my Carrara days (modeled in Rhiino) but the same method.


Sueposer ( ) posted Sun, 15 August 2010 at 6:38 PM

How about a boolean subtraction of a cylinder with the glass to make a "filler material" ?
Then put a liquid shader on the filler.


Plutom ( ) posted Mon, 16 August 2010 at 8:47 AM

Quote -  I am in the habit of cutting the inner wall of the glass at the level I want my liquid and capping that mesh so it can be textured separately.  That way there is no issue from adjacent meshes interfering with each other.  Using the inner wall of the glass shortcuts the creation of a mesh for each container.

You can also get detailed and add a meniscus fairly easily with that method. [unquote].

I do the same thing:  I make a duplicate of the goblet BEFORE adding any thickness and simply cut off what I dont want, then in making the meniscus, use the loop function to close the top.  Then on the original add the thickness.

Then when you want multiple wine glass, group everything first, then duplicate.  Lowering the  wine levels on each is easy then just cutoff more from the inner (liquid) object and cover.  Jan


ravenous ( ) posted Mon, 16 August 2010 at 11:49 AM

Alright, I guess I have to create the wine myself. It's not all that complicated or much work, it just got me thinling. For a while I naively hoped that I had missed some "Fill obect with fluid" function in Carrara.

I mean, what if I want to make an animation where the glass slightly tilts back and forth, or some character drinks from the glass. Or picture a half full bottle rolling over the floor. A wild guess is that I'd have to explore the particle emitter in that case. But fortunatly I'm not animating anything, just got me thinking.

Thanks everyone for helping me out


Tugpsx ( ) posted Mon, 23 August 2010 at 12:24 AM · edited Mon, 23 August 2010 at 12:28 AM

file_458066.jpg

Here is a little something I found some time ago. It was very helpful in building the models.

With this guide you should be able to build realistic lookiing liquid in most containers. The key is to offset the liquid so that it appears inside the glass and not as a part of the glass if you want a thick glass effect.

Notice by using different setting on the liquid the whiskey appears contained by the glass.


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