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Carrara F.A.Q (Last Updated: 2025 Feb 12 7:20 pm)

 

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Subject: light n' textures....


thomllama ( ) posted Sun, 30 December 2012 at 7:16 AM · edited Thu, 23 January 2025 at 7:14 PM

file_489992.jpg

OK, doing a Pre-lim for my brother for some images he wanted but having one main issue right now...  I'm pretty good at modeling, but, well,... everything else, not so much  :blushing:

 

anyway... trying to get "Everything Glows" to be a single bulb light in the scene.  I got it to light the space, but the actual bulb isn't glowing... tried everything, what am I missing? 

Tried all kindas of settings in the Anything Glows, tried just upping the actual sphere's color in textures... nuttin.  I'm a tad lost.  :blink:

As you can see the light is coming from the bulb, but the bulb it's self isn't glowing.

 

 

(just for info/fun, the scene is supposed to be a swamp creature lying on a couch with a laptop in a sewer pipe, creature is in works )






Hexagon, Carrara, Sculptris, and recently Sketchup. 



thomllama ( ) posted Sun, 30 December 2012 at 7:17 AM

file_489993.png

anything glows settings if that helps?






Hexagon, Carrara, Sculptris, and recently Sketchup. 



GKDantas ( ) posted Sun, 30 December 2012 at 9:43 AM

file_489996.jpg

Thats a real problem and the only way to fix is using a real point light (thats is a bulb light). Dont put it inside the real bulb object and set it to ignore the bulb model, so you dont get a strange shadow of the bulb in the roof.

Set the bulb to glow material and add some Aura effect to this object. This aura will create the glow in it.

Dont use shadows at 100% this will create a very dark shadow, unless you will use Indirect Light to render, that will minimize this effect, the good point is about 65 - 85 percent.

Remember that turning on GI will wash your scene and colors will get more light.

Also use cone lights intead distant ones, its more faster to render and get better results and control.

Dont forget to use soft shadows to kill the hard edges of the shadows (men this looks like a title for Batmam movies...)

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thomllama ( ) posted Sun, 30 December 2012 at 10:14 AM

OK, confused, are you saying don't use anything glows?

 

 just a plain bulb? add aura? 

 

I know about the shadows, and actually was plaining on turning the light down as the next step is to add the critter with a laptop that is glowing green-ish and lighting his face and such.. whole thing will be kinda dark and dingy






Hexagon, Carrara, Sculptris, and recently Sketchup. 



thomllama ( ) posted Sun, 30 December 2012 at 10:15 AM

can you upload that scene you did right there?  Kinda want to look at it and see the settings as a whole..






Hexagon, Carrara, Sculptris, and recently Sketchup. 



GKDantas ( ) posted Sun, 30 December 2012 at 11:13 AM

Here you can get the scene:

http://www.sharecg.com/v/66573/view/5/3D-Model/Interior-simple-scene-light

Yes, please dont use anything glows, its create a very strange shadow and take a lot to render a very good quality, use it for letters ou something that dont look like a simple light source as a lamp.

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thomllama ( ) posted Sun, 30 December 2012 at 1:17 PM

file_490000.jpg

Thanks GKDantas!!!  just what I needed.. :)

 

now back to modeling the slimey critter  

 






Hexagon, Carrara, Sculptris, and recently Sketchup. 



thomllama ( ) posted Tue, 01 January 2013 at 8:29 AM

file_490043.jpg

Here's a test render...

OK, here we go again... screen light isn't being stopped by the laptop for some reason (lighting the feet when it shouldn't)   moved the light around, tried using spot/bulb an a mess of other lights. Ended up back at anything glows as it gave the best effect.  made a seperate obj for the screen glow, moved it slightly in from of the laptop body/shell... made it smaller so it's not shinig past the edges... still lighting behind and down (edge of the couch)  something stupid I'm missing for sure!!!  any ideas?  






Hexagon, Carrara, Sculptris, and recently Sketchup. 



GKDantas ( ) posted Tue, 01 January 2013 at 5:36 PM

If I am understanding what you mean, you need to set the light Range to a value about the distance that you want you light cover, so it will not fill the room. Other good thing to do is Falloff range to about 50%, this way light will vanish before it get the Range value.

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thomllama ( ) posted Tue, 01 January 2013 at 6:04 PM · edited Tue, 01 January 2013 at 6:17 PM

file_490065.jpg

> Quote - If I am understanding what you mean, you need to set the light Range to a value about the distance that you want you light cover, so it will not fill the room. Other good thing to do is Falloff range to about 50%, this way light will vanish before it get the Range value.

no,.. my point is the light should project out onto his face/chest area... the back of the laptop should block it from shining his feet legs... the room light is darkish yellow/brown.. his legs and feet are green lit from the laptops screen... 

 

adding new test render... with bunny slippers  LOLOL






Hexagon, Carrara, Sculptris, and recently Sketchup. 



GKDantas ( ) posted Wed, 02 January 2013 at 6:00 AM

Use the same fake effect that you did for the bulb light. Use glow in the screen and a spot light with a very low range as the source. You cna always ignore some objects from being lighted, so will not affect the room os body parts of the character.

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thomllama ( ) posted Wed, 02 January 2013 at 6:40 AM · edited Wed, 02 January 2013 at 6:42 AM

ya, tried that. but with the closeness of the figure and all the spot light gave funny "lines" at the beginning of it's range, bulb worked sorta, but still not the right effect.

 

probably going to end up rendering out 2 images, one with the glow on and one with it off then blend/mask the 2 together in photoshop,  was trying NOT to do that as knowing my brother he'll want regular changes.. just adds steps to the whole thing.  

 

Really don't get why the light is shooting back... other object seem to stop/shadow the light..? 

 

 

Oh well,  seriously, thanks for your help!!! now... any good at un wrapping to do UV textures?  LOLOL  never can get the things to unwrap right  :cursing:






Hexagon, Carrara, Sculptris, and recently Sketchup. 



Kixum ( ) posted Wed, 02 January 2013 at 8:43 AM

Gkdantes has the right idea.

Put in your screen with the glow just like you have but without anything glows.

Then, put in a spot light behind the screen with an angle that you like.  Make the screen to not cast a shadow and set things up so the screen won't receive the light.

Then set the range falloff and angle falloff to 100% and adjust the distance appropriately.

It's a little bit of work but it can get you what you want.

The two render option is also fine.

Let us know how it works out.

-Kix


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