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Poser - OFFICIAL F.A.Q (Updated: 2019 Jun 20 8:35 am)


 Subject: Creating bioluminescence with P6 shader nodes?

Nalif opened this issue on Apr 16, 2005 · 223 posts

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  Nalif    ( ) ( posted at 11:48PM Sat, 16 April 2005 · edited on 1:55PM Wed, 01 March 2006

I have an idea as to how to do this, but I'm not sure how nice it would look. Basically just create your texture map, and then create a black and white mask of the same texture, making the white areas where you want the bioluminescence to be. Then plug the mask into the ambient value node.

That's the most basic thing I can think of, though. The only thing this would really accomplish is the bioluminescence glowing whenever it wasn't under light, though. In normal images, where the figure is somewhat lighted, the other areas wouldn't appear to glow. They would just be slightly brighter than the surrounding parts. (I know, I know. Bioluminescence doesn't really show in the light anyways. I'm not after true bioluminescence. I just want certain areas to appear to glow.) Is there something that would give better results?

And while we're on the topic, P6 is amazing - but I wish they had an option to make an object illuminate other objects around it :( - You can make things glow in the dark, but they don't cast the light on things around them. I want glowing objects >_<

Message edited on: 04/16/2005 23:53


  PapaBlueMarlin    ( ) ( posted at 12:08AM Sun, 17 April 2005  · @2217764

I'm wondering if you would have to do a combination of an object with translucence mapping and a point light positioned inside it. By bioluminescence, I take it you're talking about things like lightning bugs.



  Nalif    ( ) ( posted at 12:23AM Sun, 17 April 2005  · @2217780

Yes - Lightning bugs, jellyfish, anything that lives in deep water, etc.


  Little_Dragon    ( ) ( posted at 12:46AM Sun, 17 April 2005  · @2217798


.... P6 is amazing - but I wish they had an option to make an object illuminate other objects around it :(

We do have such an option. It's called the gather node, and you can use it to create colour-bleeding effects (simulated radiosity) in the Material Room.

Here's an example, using an ambient material on a simple box prop, and a gather node hooked up to the ground plane.



  Nalif    ( ) ( posted at 12:57AM Sun, 17 April 2005  · @2217805

WHaaaaat? That's amazing. I remember looking into how to hook up the gather node, and for the life of me couldn't get it to work. So does it only "gather" the colors that bleed through the ambient channel? And how do I hook it up? Does it plug into the alternate diffuse?


  Little_Dragon    ( ) ( posted at 1:21AM Sun, 17 April 2005  · @2217824


There are a million different ways to hook it up, of course, but this is the setup with which I've experimented today. Don't forget to enable raytracing in your render options.



  Little_Dragon    ( ) ( posted at 1:22AM Sun, 17 April 2005  · @2217827


Another test render.



  xoconostle    ( ) ( posted at 1:25AM Sun, 17 April 2005  · @2217833


I hadn't tried the gather node before, but Nalif's question intrigued me, so I tried a quickie experiement by plugging the node (with default values) into the alternate diffuse channel of Ajax's floor tile texture on the ground plane. Now I'm looking forward to hours of happy gather node experimentation with other channels and values. Thanks Nalif and Little_Dragon! (Sphere texture is "Bacteria" by Stewer.)


  stonemason    ( ) ( posted at 1:34AM Sun, 17 April 2005  · @2217840

coolstuff LD!...I'd been looking for somekind of light emitting materials in P5

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  Nalif    ( ) ( posted at 2:00AM Sun, 17 April 2005  · @2217856

Stonemason: I do a lot of sci-fi modeilng along the lines of your work, and I've always dreamt of a way to make console buttons give off a glow "aura" with a material node. Unforunately, I don't even think this will let us do it. Those buttons always look so flat :(


  Little_Dragon    ( ) ( posted at 2:45AM Sun, 17 April 2005  · @2217892

Actually, I know how you can achieve that, even with the flat-panel controls you see in Star Trek. Place a one-sided square just above above the surface of the control panel, normal-side down. This will be your emitter. Enable "Remove backfacing polys" in your render options. The emitter itself shouldn't be visible when rendered, but the raytraced colour-bleeding still works.



  semidieu    ( ) ( posted at 2:47AM Sun, 17 April 2005  · @2217895

Wow !!! Incredible ! This is really cool !


  Nalif    ( ) ( posted at 3:09AM Sun, 17 April 2005  · @2217905


Here's my go at a jelly fish-like shader. Alright, so jelly fish don't have pink spots...but it looked cool ;)


  Little_Dragon    ( ) ( posted at 3:26AM Sun, 17 April 2005  · @2217917

I don't think jelly fish have hooves, either ... but I'll let that slide for now. :)



  Nalif    ( ) ( posted at 7:05AM Sun, 17 April 2005  · @2218073


Messed around for a few more hours and wound up with this. This is very close to a bioluminescent jelly fish. The scene has one infinite light behind the creature with mostly specular, and one spot light to the left of the image.


  dirk5027    ( ) ( posted at 7:20AM Sun, 17 April 2005  · @2218088

.........


  guslaw    ( ) ( posted at 7:55AM Sun, 17 April 2005  · @2218127

.


  dlk30341    ( ) ( posted at 8:06AM Sun, 17 April 2005  · @2218146

.


  Marque    ( ) ( posted at 8:11AM Sun, 17 April 2005  · @2218152

.


  tonymouse    ( ) ( posted at 8:54AM Sun, 17 April 2005  · @2218192

bookmark Very very cool


  Redfern    ( ) ( posted at 9:07AM Sun, 17 April 2005  · @2218203

Oh! Now that's just damned clever, Little Dragon! I was wondering how one might go about creating a "repelling field" glow for the underside of a Dalek. I saw a clip of a "home made" Dalek prop/costume that had a lighting fixture rigged waithin the "bumper" section. An unearthly glow "bled" just beyond the "bumper" suggesting some alien electromagnetic field "levitating" the war machine (instead or simply rolling upon castors). From the few screen captures of the upcoming "Doctor Who" episode. "Dalek", I it appears they will employ similar visuals. I wondered how that (or even "if" it) could be accomplished within Poser. That is perfect! I will try that this afternoon when I return home. Sincerely, Bill

Tempt the Hand of Fate and it'll give you the "finger"!

  nick_brown1967    ( ) ( posted at 9:08AM Sun, 17 April 2005  · @2218207

bookmark yes very cool


  facehugger    ( ) ( posted at 9:45AM Sun, 17 April 2005  · @2218257

.


  SamTherapy    ( ) ( posted at 11:41AM Sun, 17 April 2005  · @2218419

Very coll stuff. Is there any way to simulate this in P5? I know about using the Ambient channel for self illuminated objects but how about a P5 equivalent of the Gather Node?

Coppula eam se non posit acceptera jocularum.

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  xoconostle    ( ) ( posted at 12:51PM Sun, 17 April 2005  · @2218528

SamTherapy, good question. I don't have the technical know-how of L_D but perhaps you could use the color picker to sample the hue of the object that you want other objects to "gather," then apply that color to subtle shadowless soft spotlights aimed appropriately? What I want is a relfection catcher in addition to the shadow catcher. Imagine the possibilities if an object could be made invisible with the exception of relfective properties. By the way, I've seen biolumenescent jellies with pink spots at the Monterey Bay Aquarium. Nelif, your jellyfish node is beautiful. Cool work!


  Ghostofmacbeth    ( ) ( posted at 1:34PM Sun, 17 April 2005  · @2218592

Is there a way to combine it with another ambient channel? I am very new to the nodes and really have no clue about them.



  PapaBlueMarlin    ( ) ( posted at 3:02PM Sun, 17 April 2005  · @2218729

Ghost, you might use the blender node to create different ambient effects...



  SamTherapy    ( ) ( posted at 6:31PM Sun, 17 April 2005  · @2219014

"What I want is a relfection catcher in addition to the shadow catcher. Imagine the possibilities if an object could be made invisible with the exception of relfective properties." No problem. Gimme a few and I'll post the Material room settings.

Coppula eam se non posit acceptera jocularum.

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  SamTherapy    ( ) ( posted at 7:50PM Sun, 17 April 2005  · @2219138


Here's a P5 Reflection Catcher.

Coppula eam se non posit acceptera jocularum.

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  c_hubert    ( ) ( posted at 12:41AM Mon, 18 April 2005  · @2219390

bookmark


  Singular3D    ( ) ( posted at 2:30AM Mon, 18 April 2005  · @2219474

.


  Connatic    ( ) ( posted at 6:45AM Mon, 18 April 2005  · @2219608


I had to experiment with Gather after reading this useful thread. A sphere and a stretched sphere with materials, and one spotlight over a ground with tiles.


  DistantWorlds    ( ) ( posted at 12:29PM Mon, 18 April 2005 · edited on 12:30PM Mon, 18 April 2005 · @2219956

Only one word: Beautiful! ;) BTW: I have good news about the Memory Bug from Poser 5 /6! ;) I recently received word from CL [QUOTE]Yes the engineers have found a bug that could be the cause of the problem. It will be in the first service release which will be out shortly. For know what I can suggest is two things. First, save out in revisions, ie save out to a different file name each time. Second you can add the entire scene as a prop to you library pallete. That way if the file does get over written you can just load it out of the libary pallete.[/QUOTE] Aren't these good news? ;)

Message edited on: 04/18/2005 12:30


  jewell    ( ) ( posted at 4:24PM Mon, 18 April 2005  · @2220341

Ooooooo.... Now I want time to experiment with the shader nodes, darn it. Must learn to give up sleep so I will have enough hours in my days.


  xoconostle    ( ) ( posted at 6:34PM Mon, 18 April 2005  · @2220484

SamTherapy, I wouldn't have come up with that reflection catcher solution on my own. THANK YOU! :-)


  unzipped    ( ) ( posted at 7:14PM Mon, 18 April 2005  · @2220553

bookmark


  byAnton    ( ) ( posted at 8:28PM Mon, 18 April 2005 · edited on 8:29PM Mon, 18 April 2005 · @2220630

Just for a fun render could someone do a test render with the Magik Particle figure I made?

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Message edited on: 04/18/2005 20:29

-Anton, creator of Apollo Maximus
"Conviction without truth is denial; Denial in the face of truth is concealment."


Over 100,000 Downloads....

  SamTherapy    ( ) ( posted at 8:52PM Mon, 18 April 2005  · @2220653

xoconostle, you're welcome. maxxxmodelz came up with the basic shader, which I tweaked to get the colour working, so maxxx deserves the credit.

Coppula eam se non posit acceptera jocularum.

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  byAnton    ( ) ( posted at 9:22PM Mon, 18 April 2005  · @2220692

With what SamTherapy said and this glow technique you could recreate the StarTrek transporter effect by loading an avi in the transparency with noise going from total black to white. Just an idea.

-Anton, creator of Apollo Maximus
"Conviction without truth is denial; Denial in the face of truth is concealment."


Over 100,000 Downloads....

  Eismaus    ( ) ( posted at 6:07AM Tue, 19 April 2005  · @2221132

bootmark


  svdl    ( ) ( posted at 6:15AM Tue, 19 April 2005  · @2221136

Cool! I can see flames actually casting light using this feature.

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  Eismaus    ( ) ( posted at 7:07AM Tue, 19 April 2005  · @2221192

Hm, i don't get it.. :o( What material settings does you use, to make your Probs (Box, Moon...) glow?


  Dale B    ( ) ( posted at 7:09AM Tue, 19 April 2005  · @2221196

Anton; If someone doesn't beat me to it, I'll give that a whirl this weekend (assuming the new new motherboard works). It'll be Thursday before I can start rebuilding the main system though, so if anyone else cares to go for it do!


  byAnton    ( ) ( posted at 1:11PM Tue, 19 April 2005  · @2221577

I have to go look for my old stuff. I uninstalled everything but my current projects. Just being lazy. hehehe.

-Anton, creator of Apollo Maximus
"Conviction without truth is denial; Denial in the face of truth is concealment."


Over 100,000 Downloads....

  Tirjasdyn    ( ) ( posted at 1:30PM Tue, 19 April 2005  · @2221599

I'm working on one...maybe I'll have some tests up tonight. That's the goal anyway.

Tirjasdyn
http://michellejnorton.com

  byAnton    ( ) ( posted at 2:34PM Tue, 19 April 2005 · edited on 2:39PM Tue, 19 April 2005 · @2221691


A bit of experimenting but lots of fun. Faeries will never be the same in Poser. Someone should make sure Thorne sees this thread. Anton

Message edited on: 04/19/2005 14:39

-Anton, creator of Apollo Maximus
"Conviction without truth is denial; Denial in the face of truth is concealment."


Over 100,000 Downloads....

  Tiny    ( ) ( posted at 3:42PM Tue, 19 April 2005  · @2221792

Very interesting indeed!
Bookmarking.

And more images pleeeeeaase! Love it.



  Nalif    ( ) ( posted at 7:39PM Tue, 19 April 2005  · @2222118


Here are some more images I've been playing with. These are Davo's creatures. I thought my material looked very "etheral", and then an idea struck me. I made the figure intersect the floor to make it look as if he's floating through the floor like a ghost. Turned out quite nicely with gather.


  Nalif    ( ) ( posted at 7:40PM Tue, 19 April 2005  · @2222120

Here's another one. This one doesn't have a gather node on the ground though.


  Nalif    ( ) ( posted at 7:42PM Tue, 19 April 2005  · @2222123


Doh. Wrong image.


  Nalif    ( ) ( posted at 7:43PM Tue, 19 April 2005  · @2222125


And here's one with the toonamal frog.


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