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A few rendering and material questions - faceting, translucency

facet translucent artifacts

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#1 -andrew-

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Posted 02 August 2016 - 08:22 AM

Good morning all-

 

I'm working on creating a small light fixture to use in some renderings.

 

1) I have imported two Illustrator paths and revolved them. They look clean in Renderzone, but faceted in Thea.

(I'm not that familiar with the settings in Thea yet...)

How can I improve this?

 

2) I am getting what look like artifacts based on the geometry created during the revolution. The material applied is thin translucent. I'm not sure how best to represent this object/material.

Also, I've created it simply as a solid - I'll be adjusting my cross-section / revolution so that it more closely represents the real-world thickness, but the artifacts are still something I need to get rid of.

 

3) Regarding the material itself, I'm looking for the "best" way to find/create/use what's essentialy like a translucent white acrylic light lens.

 

4) Ok, bonus question: can I create a glowing material in Thea without having it emit? I want it to glow, but need to use an .ies file to create the output.

 

compare.jpg

 

Thanks in advance!!

Andrew

 

 


Edited by -andrew-, 02 August 2016 - 08:33 AM.


#2 AHTOH

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Posted 02 August 2016 - 08:43 AM

Hi Andrew.

What small are you creating?  :)

1) You possibly have artificially smoothed object in Render Zone and have what you have in Thea

2) Would not you better try preset materials you can download from Thea site

3) It would be best if you can attach the file in order to understand what are you trying to create

4) Easiest part: in emitter settings in Thea Mat Lab check "Passive emitter"

 

Best,

Anton.


Anton Voloshin,

architect, interior designer, product designer.


#3 -andrew-

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Posted 02 August 2016 - 10:08 AM

Hi Anton,

 

Thanks... it says I can't attach a formz file... ?



#4 Tech

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Posted 02 August 2016 - 10:11 AM

Hi Andrew,

 

Just ZIP it first (and make sure it is a relatively small file without unnecessary objects or materials...)



#5 -andrew-

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Posted 02 August 2016 - 10:34 AM

Thanks - here it is.

Attached Files



#6 manolis

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Posted 03 August 2016 - 04:29 AM

Hi everyone,

 

Regarding the artifact, displacing one of the two objects (even with the slightest amount) should fix it.

 

ps Here is a link to Thea's light setup & optimization guide.

 

Regards,

Manolis

 


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#7 -andrew-

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Posted 03 August 2016 - 06:49 AM

Thanks Manolis!

 

I'll try that out & visit the guide.

 

Andrew



#8 George Gliatis

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Posted 03 August 2016 - 06:52 AM

Hello Andrew.

You could achieve this kind of material by combining a Basic Layer with a Thin Film on top of it.

The Basic Layer can have translucency too.

You can control the transparency of the material, by adjusting the Layer Weight of the Thin Film layer.

 

I would also convert the surface to single face.

 

I have attached the acrylic material.

 

Greetings,

George

Attached Files



#9 Tech

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Posted 03 August 2016 - 07:30 AM

Hi George,

 

Welcome to the forum and thanks for your answers!

 

Looking forward to seeing you more in the future.  ;)



#10 George Gliatis

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Posted 03 August 2016 - 07:33 AM

Thank you! I would love that too.

 

Greetings,

George



#11 -andrew-

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Posted 03 August 2016 - 08:47 AM

Excellent help everyone!

 

Thank you!



#12 AHTOH

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Posted 04 August 2016 - 01:05 PM

Hi Andrew.

I noticed that your lens touches or intersects the base shape.

disklite test1.jpg

If you move it it 1 mm forward all your artefacts are gone.

disklite test 2.jpg

 

It happens to most renderer I know.

Best,

Anton.


Anton Voloshin,

architect, interior designer, product designer.




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