FranOnTheEdge opened this issue on Sep 30, 2006 · 20 posts
FranOnTheEdge posted Sat, 30 September 2006 at 1:25 PM
Is it possible to create a watery material with bubbles inside it?
(Not ripples on the surface.)
If not could you make a material with random bubbles inside? Which you could then use as well as a water material and have both sitting inside... say a cylinder? (Or the water ON the cylinder with the bubbles inside it?)
Would this have to be a volume material? Or could you get away with something else and not use volume? (Since I believe using volume increases the render times way way up - and my scene is already very render heavy)
Er... any thoughts?
Measure
your mind's height
by the shade it casts.
Robert Browning (Paracelsus)
aprilgem posted Sat, 30 September 2006 at 2:17 PM
What if you messed with one of the presets -- the yellow one with the brown blobs? If you could make the colors transparent, it might work.
FranOnTheEdge posted Sat, 30 September 2006 at 2:25 PM
Er... which one is that? In what folder?
Is it a water? A christmas ball?
"Yellow with brown blobs" doesn't immediately ring any bells. So I'm not sure I've got one of those.
Measure
your mind's height
by the shade it casts.
Robert Browning (Paracelsus)
aprilgem posted Sat, 30 September 2006 at 3:09 PM
Sorry. I'm not much of a Brycer -- it's in the Wild and Fun folder, the Amazonian frog thing. Just tried to mess with the preset myself to see if it could actually be done. I turned it into a volume mat, changed a bunch of settings, and the best I could come up with looked more like tapioca pudding than bubbly water.
Well ... at least now I've got a good base to work with if I ever want to render tapioca pudding. :-
airflamesred posted Sat, 30 September 2006 at 3:28 PM
No, Bryce does have it's limits.I knocked on the DTE door, and entered on more than one occasion and it's not that welcoming. Duplicate and add the bubbles is my advice.
AgentSmith posted Sat, 30 September 2006 at 5:26 PM
Couldn't really be a volumetric material, as it would not be able to have (surface) reflection.
Duplicate and add the bubbles is my advice.
-Ditto.
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MatCreator posted Sat, 30 September 2006 at 8:19 PM
Very interesting :)
Using materials in Bryce, you may not be able to do this, but if you think outside the box, maybe you can just use your water material, and then make a grouped object, setting the object that has the water material applied positive, then creating a random array of spheres, set as negatives against/inside the water object, maybe apply a glass material to those...
Just a thought, havent put it to practical use as yet :P
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world. Those that can count, and those that can't..
AgentSmith posted Sat, 30 September 2006 at 10:12 PM
Yeah, exactly.
If you do that, I might cancel out all shadow casting by the bubbles to help reduce render time. (Unless their shadows are prominant)
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mboncher posted Sat, 30 September 2006 at 10:49 PM
Attached Link: http://excalibur.renderosity.com/mod/gallery/index.php?image_id=1300982
I guess I have two possible answers for this that may work, but both depend on your orientation of camera, and how bubbly we're talking here.One option I forsee is if you're talking columns of bubbles, make a terrain column then wrap a "rain effect" on it. From a distance, the blobs of rain may appear as bubbles.
But if you're inside the bubbles, and you want little fizzy ones, I'm thinking using a snow or "starfield texture, or take a volume sphere around the camera where the density is low, and the quality is too. That gives a lot of speckled spots. I do something similar for ocean spray. (as found in my latest picture... shameless plug)
Ooh, idea for a third way of potentially handling bubbles. If you're looking for "scuba like" respirations, create a cloud underwater by using a rock terrain, stretch it out a little, and look for a surface cloud texture like "Jetstream" that has a high reflectivity, and if you can play with it a little for a speckly/lumpy bump pattern that you can crank, that may do the trick.
Just some thoughts, now I'm going to have to experiment with them. Now ya done it. Ya got me thinkin, Fran... and that's never healthy for me. ;c)
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MatCreator posted Sat, 30 September 2006 at 11:59 PM
Uh oh Mr. Smith...
Weve given her a "choice".....
There are 3 kinds of people in the
world. Those that can count, and those that can't..
Mahray posted Sun, 01 October 2006 at 12:52 AM
Like this?
Boolean spheres in the positive liquid.
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Ignore the shooty dog thing.
MatCreator posted Sun, 01 October 2006 at 12:56 AM
Mahray posted Sun, 01 October 2006 at 1:04 AM
Took me a while to dig that out of the vaults, but I've lost the scene.
Come visit us at RenderGods.
Ignore the shooty dog thing.
AgentSmith posted Sun, 01 October 2006 at 1:24 AM
Well, like Mahray did; here's what a hundred (negative) sphere bubbles look like. Decent enough, but took a little time to "pose" them, lol.
About 20 minutes to put together, 20 minutes to render.
I think what would help sell these bubbles is to have some sort of surface disturbance. (they gotta pop sometimes) I think a bump map would work best for that part.
Fun exercise, though. ;o)
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Mahray posted Sun, 01 October 2006 at 7:13 AM
Attached Link: Larger Animated Boil
Edit - I really like AS's thing, too :)
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Ignore the shooty dog thing.
FranOnTheEdge posted Sun, 01 October 2006 at 1:46 PM
Wow, Brycians!!! This is great stuff!
Well while you lot where working it all out for me, I did try to find the "yellow with brown spots" material that aprilgem mentioned - didn't find it, but I did try an experiment with ... well I started with the "gold rock" volume material, then I changed the "Islands" that it uses in the DTE to "Basic Spots" - didn't like that it looked too regular, so I tried setting it to Random - and although it's not bubles, I found a rather nice sort of smoky effect - which at a distance and inside another sphere with water on it, might do for a watery disturbance...
I'll have to try the combination out - otherwise from what you're all saying it looks like booleans are it...
Which would work for a close-up, but at a distance - what with all the rest of the render intensive stuff I have going on in this scene - it may crash everything.
And Mahray, I love those bubbles popping on the surface!
Like AS's smokey glass too. My siutation will not have any surface showing, I was thinking more like the fizzing you get when an electrode is worthing away in some liquid or other - those sort of bubbles.
Perhaps a combination of the smokey thing I've discovered, and a few larger booleans dotted about?
mboncher,
I'll try your terrain suggestion out too - you never know what will work best until you try things.
Measure
your mind's height
by the shade it casts.
Robert Browning (Paracelsus)
TheBryster posted Mon, 02 October 2006 at 7:58 AM Forum Moderator
Careful with that stuff, guys! Fran sounds like she's about to have an orgasm and then we'll ALL be in trouble!
Excellent work BTW
Available on Amazon for the Kindle E-Reader
All the Woes of a World by Jonathan Icknield aka The Bryster
And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...
pakled posted Mon, 02 October 2006 at 5:56 PM
had a thought..there's a mat called 'menno's rainbow metal', that if you applied some transparency to it, might make a great soap bubble..but that's how my mind works..or doesn't..;)
I wish I'd said that.. The Staircase Wit
anahl nathrak uth vas betude doth yel dyenvey..;)
Gog posted Tue, 03 October 2006 at 7:31 AM
Attached Link: http://www.renderosity.com/mod/gallery/index.php?image_id=434639
Problem is bubbles aren't normally round, use metaballs to create more realistic shaped bubbles and give them a glass or soap bubble texture.Take a look at the metaball cavitation in this scene to see what I mean...
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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.
FranOnTheEdge posted Wed, 04 October 2006 at 2:38 PM
pakled, I've got that somewhere - I'll give it a try.
Gog_CA1,
Yes I see what you mean. Hmmm cavitation with rainbows... interesting thought.
Bryster, :tt2:
Measure
your mind's height
by the shade it casts.
Robert Browning (Paracelsus)