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Poser - OFFICIAL F.A.Q (Last Updated: 2024 Nov 21 6:06 am)



Subject: True volumetrics vs planes?


MistyLaraCarrara ( ) posted Fri, 29 August 2014 at 12:28 PM · edited Tue, 19 November 2024 at 9:41 AM

when i see poser volumetrics, it's like layers of planes.
i tend not to think of it as true volumetrics.

but, am i wrong?

what does true volumetrics do or capable of?

like clouds, vapers, fire, bathtub water, water bender sculps :) 



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ironsoul ( ) posted Fri, 29 August 2014 at 2:39 PM · edited Fri, 29 August 2014 at 2:42 PM

Don't if this is true volumetrics but the types I have come across have the following features

  1. Its applied to a container (any enclosed 3d shape like a cube or sphere) in which particles will be generated

  2. Has a 3D density map that controls how the particles are placed and how the light is absorbed or scattered within the container.

 3. It has one or more render modes that determines how the render engine takes the particles and calculates the final appearance (eg uniform or additive). This will determine how the object will appear (eg cloud). Some implmentations allow a surface to be generated which materials can be applied (eg water splash)

Poser has volumetric lighting, I don't know if this technology compares in terms of implementation.



stewer ( ) posted Wed, 03 September 2014 at 4:57 PM

file_507029.jpg

If your volumetrics look like this:


stewer ( ) posted Wed, 03 September 2014 at 4:57 PM

file_507030.jpg

Change the "volume noise" on the atmosphere node to 1.0 to get to this:


stewer ( ) posted Wed, 03 September 2014 at 4:59 PM

file_507031.jpg

And to increase quality, you can lower the step size (at the expense of render time). For this example, I reduced the default step size to 1/4th.


MistyLaraCarrara ( ) posted Thu, 04 September 2014 at 2:07 PM · edited Thu, 04 September 2014 at 2:09 PM

that last one looks pretty good actually.
reminds me of the Flashdance movie 

 

is that a cone primitive?

are you inside a closed cube?
 

part of andy is blacked out in front? and casting wonky shadow on the floor



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MistyLaraCarrara ( ) posted Thu, 04 September 2014 at 2:14 PM

Quote - Don't if this is true volumetrics but the types I have come across have the following features

  1. Its applied to a container (any enclosed 3d shape like a cube or sphere) in which particles will be generated

  2. Has a 3D density map that controls how the particles are placed and how the light is absorbed or scattered within the container.

 3. It has one or more render modes that determines how the render engine takes the particles and calculates the final appearance (eg uniform or additive). This will determine how the object will appear (eg cloud). Some implmentations allow a surface to be generated which materials can be applied (eg water splash)

Poser has volumetric lighting, I don't know if this technology compares in terms of implementation.

 

Thanks.  maybe something like lux can add volumetric density for poser scenes?



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stewer ( ) posted Fri, 05 September 2014 at 12:31 PM

No cones, no cube. This is just Andy, the ground plane and one spotlight.

You can plug 3d textures into the Atmosphere node's density input for all kinds of effects.


heddheld ( ) posted Sat, 06 September 2014 at 3:48 AM

@stewer I like the first pic !! sorta alien death ray ;-) a funky colour and Andy melting, could make a nice pic lol

@MLP have a peep in the blender forums (or utube) it has pretty good volumetrics, but they can turn your comp into a spaceheater :-( {crank up the AC} good effects take practise and time so cheating is often easier/quicker, mostly it depends on what you want maybe a old style "London" peasouper [Jack in the shadows] is probably easier with planes but a singer on stage with a spot lightcould be a nitemare to set up without some good volume effects

off to play with stewers way ;-) hope its better then it was in P6 days ;-) an even if it aint !! my comp is lol


jamminwolf ( ) posted Sat, 06 September 2014 at 12:32 PM · edited Sat, 06 September 2014 at 12:33 PM

Ok, is it at all possible to set a prop (cube, sphere) as volumetrics (like clouds)?  And can you add textures for further effects?

How is it that you're setting your light to create volumetrics?  Where do I go specifically to set this?

Using Poser9 SR3.2

...wolfie


marcolini ( ) posted Sat, 06 September 2014 at 2:03 PM

file_507086.jpg

It looks like a lot of fun. Above is the render of Rufus with 2 spot lights (one pink and one white) and some adjustments to atmosphere settings. Rendered in Poser Game Dev.


ironsoul ( ) posted Sun, 07 September 2014 at 4:04 AM

Quote -
Thanks.  maybe something like lux can add volumetric density for poser scenes?

You would need to be able to edit the materials once in Lux format but there shouldn't be anything special about objects from Poser that would prevent it.



MistyLaraCarrara ( ) posted Tue, 16 September 2014 at 11:56 AM

this technique should work with godray effects :)

but what if you want squares instead of the cone-round spotlight?

was looking at the other thread with the room with idl lights.  there's a grid pattern on the window. 

maybe a atmosphered spotlight for every square?



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