Author Topic: Cloud/dust explosions  (Read 1670 times)

2021-09-03, 19:16:11

ianosss

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Hi. I was just wondering if Corona render can render images like I've attached? I'm looking to create a coloured dust cloud. Is this possible in Corona and if so whats the best way to achieve this? Many thanks. :)

2021-09-06, 09:16:29
Reply #1

Nejc Kilar

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I'd give this a go with OpenVDBs because with Corona 7 you can now render VDB simulations using the Corona Volume Grid.

As for the little rocks on the side, while we don't support Particle rendering right now (we are looking at it for v8 but can't promise anything at the moment) you could potentially get away with simulating the particles and then converting them to Geometry. Not the absolute best solution but a solution none the less :)

2021-09-06, 12:20:35
Reply #2

ianosss

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Hi Nejc. Thanks for the info.

I'm completely new to open VDB. How are VDB simulations created? Would I need a software like X-particles to do this, or another software?

Are there any good VDB tutorials you can recommend?

Yes I could do that for the small rocks as I don't need many of them. Its mainly just the cloud explosion that I need.

Sounds good, yes that would be great if Corona could do particles also. :)

2021-09-06, 12:43:10
Reply #3

Nejc Kilar

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Well creating VDB sims requires some sort of VFXy knowledge - so X-Particles is one option, Houdini f.e would be another. Even something realtime could probably get you there like JangaFX's EmberGen. Generally speaking you'd need to do particle / volume simulations in there which is typically focused around controlling your simulations via different forces and such to make them as you want them.

Depending on the complexity of the result that you'd need you could also try modeling similar shapes using polygonal modeling techniques and then maybe sculpt in some of the detail (using Cinema 4D's sculpting). Afterwards you take that mesh and apply a Volume material and try do to the magic in there... But I suspect if you want to get those nice "nebula" like details in the dust cloud itself that you'll have to do some simulating.

2021-09-06, 14:06:21
Reply #4

ianosss

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Many thanks. So the workflow would be to create the simulation in say X-particles, export that as a VDB and then render in corona?

2021-09-06, 14:13:41
Reply #5

Beanzvision

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You can also create and export simulations from Blender as well. ;)


2021-09-06, 19:09:58
Reply #6

ianosss

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You can also create and export simulations from Blender as well. ;)


Thanks I'll check that out too! :)

2021-09-07, 09:36:35
Reply #7

Nejc Kilar

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Many thanks. So the workflow would be to create the simulation in say X-particles, export that as a VDB and then render in corona?

That's how I'd do it yeah :)

2021-09-07, 21:41:22
Reply #8

lllab

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for the particles:

i render them relativ often, forrain or snow etc, it seems to work without any conversion (they render as renderinstances)
not sure on 3rdparty likexparticlesbut the internalnormal ones render with corona.

this is not super particle optimized of course,as it is plain render instance sonly, so limited in the number

Stefan

2021-09-24, 11:24:00
Reply #9

ianosss

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I see that on the Corona Cinema 4D roadmap is particle support. Would that mean that when its implemented it will work with X-particles? I'm just wondering as I'm now learning X-particles. Thanks. 

2021-09-24, 16:57:28
Reply #10

Ealexander

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Keep in mind you can also buy VDBs already made - here's one set for example:

https://www.thepixellab.net/products

Clouds, Fire, explosions, etc.  There are lots of packs and free stuff kicking around the internet too.  Just an option.

2021-09-24, 18:23:48
Reply #11

ianosss

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Keep in mind you can also buy VDBs already made - here's one set for example:

https://www.thepixellab.net/products

Clouds, Fire, explosions, etc.  There are lots of packs and free stuff kicking around the internet too.  Just an option.

Thanks, I'll check that out. :)

2021-09-24, 18:42:38
Reply #12

burnin

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Also some free ones...

- Free VDB Clouds Pack by cs_motion_design

- Vol.1 200 Modular openVDB Clouds ($5 & a couple for free) by Brandon Young