Air Dust

Use this forum for general user support and related questions.
Forum rules
Please upload a testscene that allows developers to reproduce the problem, and attach some images.
User avatar
Sharlybg
Donor
Donor
Posts: 3101
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Air Dust

Post by Sharlybg »

Just why it doesn't work if the "Cube" volume object totally surround the camera ?


Working
Dust.jpg


not Working
No__Dust.jpg

blendfile
dust air.blend
(735.3 KiB) Downloaded 146 times
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA
User avatar
Egert_Kanep
Posts: 237
Joined: Tue Mar 13, 2018 10:34 am

Re: Air Dust

Post by Egert_Kanep »

Probably interior and exterior volume are not defined for objects. Attached fixed blend conf
Attachments
dust air_edit.blend
(751.95 KiB) Downloaded 127 times
User avatar
Sharlybg
Donor
Donor
Posts: 3101
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Air Dust

Post by Sharlybg »

Egert_Kanep wrote: Wed Oct 23, 2019 1:49 pm Probably interior and exterior volume are not defined for objects. Attached fixed blend conf
Thanks you for the help. So everything have to be correctly setup manually like you did.I can understand the logic behind.

So now why my initial method is working ? i don't know :roll:
What is the limitation if it is a bad method ? don't know .

Really thaks you for the help.
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA
User avatar
Dade
Developer
Developer
Posts: 5672
Joined: Mon Dec 04, 2017 8:36 pm
Location: Italy

Re: Air Dust

Post by Dade »

Sharlybg wrote: Wed Oct 23, 2019 2:53 pm
Egert_Kanep wrote: Wed Oct 23, 2019 1:49 pm Probably interior and exterior volume are not defined for objects. Attached fixed blend conf
Thanks you for the help. So everything have to be correctly setup manually like you did.I can understand the logic behind.

So now why my initial method is working ? i don't know :roll:
What is the limitation if it is a bad method ? don't know .
You have to set the camera or world volume.
Support LuxCoreRender project with salts and bounties
User avatar
Sharlybg
Donor
Donor
Posts: 3101
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Air Dust

Post by Sharlybg »

You have to set the camera or world volume.
Set as same as my cube volume or a new volume ("air") ? anyway i've done both and it doesn't work.

tried Both
Initial__setup.jpg
INIT2.jpg
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA
User avatar
Egert_Kanep
Posts: 237
Joined: Tue Mar 13, 2018 10:34 am

Re: Air Dust

Post by Egert_Kanep »

Did you also define ext volume for your room object?
User avatar
Sharlybg
Donor
Donor
Posts: 3101
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Air Dust

Post by Sharlybg »

Egert_Kanep wrote: Wed Oct 23, 2019 3:59 pm Did you also define ext volume for your room object?
No because that way it will be just replicating your working method. What i want to understand before Dade answer is why my first method work. ( No need to define room and camera volume. just put camera a bit outside of the volume).
Want to know why this one work.
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA
User avatar
Egert_Kanep
Posts: 237
Joined: Tue Mar 13, 2018 10:34 am

Re: Air Dust

Post by Egert_Kanep »

I think because by default camera assumes air to be ext interior and you view into the fog, not inside it. I might be wrong tough.
User avatar
FarbigeWelt
Donor
Donor
Posts: 1046
Joined: Sun Jul 01, 2018 12:07 pm
Location: Switzerland
Contact:

Re: Air Dust

Post by FarbigeWelt »

Sharlybg wrote: Wed Oct 23, 2019 4:03 pm
Egert_Kanep wrote: Wed Oct 23, 2019 3:59 pm Did you also define ext volume for your room object?
No because that way it will be just replicating your working method. What i want to understand before Dade answer is why my first method work. ( No need to define room and camera volume. just put camera a bit outside of the volume).
Want to know why this one work.
Given the fact that your a very experienced user, your question should weigh a lot more.

I guess there is an issue or at least an illogical behavior in the handling of volumes. Not only the camera omits scattering volume but also light sources depend on location, i.e. under some circumstances the beam is visible in the scattering volume if the light source is placed outside the volume but the beam is not visible if the light source is placed in the volume, e.g. laser. Strange enough, the beam gets visible after reflection by a mirror. (At least I observed these effects in LuxCoreRender V2.2.)
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
wasd
Posts: 319
Joined: Tue Apr 24, 2018 7:20 pm

Re: Air Dust

Post by wasd »

Dade wrote: Wed Oct 23, 2019 3:17 pm
Sharlybg wrote: Wed Oct 23, 2019 2:53 pm
Egert_Kanep wrote: Wed Oct 23, 2019 1:49 pm Probably interior and exterior volume are not defined for objects. Attached fixed blend conf
Thanks you for the help. So everything have to be correctly setup manually like you did.I can understand the logic behind.

So now why my initial method is working ? i don't know :roll:
What is the limitation if it is a bad method ? don't know .
You have to set the camera or world volume.
Camera volume does not work.
CPU Bidir + Metropolis | Core i5-4570
Post Reply