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Fluid in a Glass

1

"(and why you’ve been doing it wrong your whole life)" - an interesting read if you're modeling fluids. This article isn't new, but I just found it and thought it's worth reading.

It’s hard to imagine a world without wine-glass tutorials, there are hundreds of them! Heck, I made two myself a few years ago.

But there’s a problem! We’ve been teaching (and learning) the wrong method this whole time! I know it’s a bad idea to teach complicated physics stuff in a noob tutorial, but teaching the wrong thing sounds a bit worse.

So good morning class! Today we’re going to learn about interfaces! (not that kind of interface). Open your text books to page 269 and lets find out why we’re all idiots!

About the Author

Avatar image for Bart Veldhuizen
Bart Veldhuizen

I have a LONG history with Blender - I wrote some of the earliest Blender tutorials, worked for Not a Number and helped run the crowdfunding campaign that open sourced Blender (the first one on the internet!). I founded BlenderNation in 2006 and have been editing it every single day since then ;-) I also run the Blender Artists forum and I'm Head of Community at Sketchfab.

1 Comment

  1. One thing to note, the author mentions a ray length node setup to fake volume absorbtion, which requires the first method described in the article to work properly, but in the meantime actual volumetric support was implemented in Cycles. So now it's easiest to do the alternative method (the one from the V-Ray tutorial in the article) where the fluid and glass are modeled with fully enclosed surfaces each and slightly overlapping to avoid visual artifacts.

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