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radial anisotropic

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radial anisotropic

Post Thu Jan 28, 2010 11:47 pm

Hi,
Someone would be so kind to help me in this matter.
I mean to perform the radial anisotropic effect, ie the anisotropy in a circular disk.
Searching the internet I found a tutorial, but other programs, I want to make to Yafaray.

http://www.evermotion.org/tutorials/sho ... final-sp-1


The result in the tuto is perfect, but I firmly believe that I can achieve the same in Yafaray. :)
Someone can tell you how we do it? :oops: , Anyone ever tried this effect in a circular area?.
Since already many thanks.
Greetings
cjd2 :D
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cjd2
 
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Re: radial anisotropic

Post Fri Jan 29, 2010 8:06 am

you can get there or atleast very close.
http://img259.imageshack.us/img259/8259/render1u.png

Just use a texture for scratches mapped in Blender to Nor(bump)
And make it map radialy on the bottom surface of the fan.
You dont even need to touch the anisotropic sliders in Yafaray they give you horizontal vertical brush bumps.
telemmaite
 
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Re: radial anisotropic

Post Fri Jan 29, 2010 11:22 am

cjd2 wrote:Hi,
Someone would be so kind to help me in this matter.
I mean to perform the radial anisotropic effect, ie the anisotropy in a circular disk.
Searching the internet I found a tutorial, but other programs, I want to make to Yafaray.

http://www.evermotion.org/tutorials/sho ... final-sp-1


The result in the tuto is perfect, but I firmly believe that I can achieve the same in Yafaray. :)
Someone can tell you how we do it? :oops: , Anyone ever tried this effect in a circular area?.
Since already many thanks.
Greetings
cjd2 :D


Out of the box you cant with yafaray. Still caustics in yafaray are ofc interesting. So here are several way around it:

1. Make a cone or inverted cone (depending on the anisotropic effect) at the exact position where the final object is, with the tip of the cone pointing to cam.
2. make the base material
3. insert light - indirect ligthning is in most cases needed here to illuminated the cone from all sides and to have close to no or only very soft shadows
4. render the cone right from above (90°) high resolution
5. use the texture on the final item
6. tune material and render

There are different options depending on your scene but above way offers an idea of the base concept.
Kunden-besser-informieren.de

Images posted by me are solely posted for the purpose of the yafaray project. Any other commercial or non-commercial use, modification etc. of my images and its content requires my written permission.
heretic
 
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Re: radial anisotropic

Post Fri Jan 29, 2010 8:59 pm

Anisotropic reflection direction depends on object UV coordinates,
If you unwrap your object using a radial pattern, then you are likely to get radial anisotropic

A suitable (radial) bumpmap will reinforce the anisotropic effect.
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Samo
 
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Re: radial anisotropic

Post Fri Jan 29, 2010 11:00 pm

Thank you Telemmaite for your reply, even though I am not convinced the outcome :cry: .
Heretic, thanks to you too, see you try, you've done the test too, you need not there a .blend so I can understand better?.
On the other hand, I see the link to the tutorial to do it in max / vray, takes some work, compared to the solution of Heretic, I will get the same result? I mean the quality that has the image of tuto :roll: .
Thanks Samo :wink:
Bye
cjd2
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cjd2
 
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Re: radial anisotropic

Post Sat Jan 30, 2010 9:51 am

Example of radial anisotropic. Notice that to make it work nicely in the planar circular surface I have had to add lot of resolution, since normal interpolation does not work in planar surfaces, unlike the cone on the left.

you can download the HDRI file from here:
http://www.aversis.be/hdri/free-hdri-003.htm
Attachments
ani_test1.zip
(128.45 KiB) Downloaded 391 times
anitest.png
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Samo
 
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Location: Spain

Re: radial anisotropic

Post Sat Jan 30, 2010 6:44 pm

cjd2 wrote:Hi,
Someone would be so kind to help me in this matter.
I mean to perform the radial anisotropic effect, ie the anisotropy in a circular disk.
Searching the internet I found a tutorial, but other programs, I want to make to Yafaray.

http://www.evermotion.org/tutorials/sho ... final-sp-1


The result in the tuto is perfect, but I firmly believe that I can achieve the same in Yafaray. :)
Someone can tell you how we do it? :oops: , Anyone ever tried this effect in a circular area?.
Since already many thanks.
Greetings
cjd2 :D


Hi i also made an example file for you, Samo was faster to put an example but i hope you like this one:

radial_example.png
this is photonmaping with pisa hdr


and the blend file with the textures included:

http://static.yafaray.org/temp/anisotropic_radial.blend

just one warning i used svn 471 to do this render so the render settings may differ if you open it with yafray 0.1.1

Greetings from Mexico,
DarkTide
Just Vampires Playing To Be Mortals...
---------{--<@
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DarkTide
 
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Re: radial anisotropic

Post Sun Jan 31, 2010 12:18 am

WWWWWWWWWWOOOOOOOOOOOOOOWWWWWWWWWWWWWWWWWW :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D .
Thank you, thank you very much, you are very kind.
I will see the tests!!!!!!!!!! and , newly , THANK , Darktide , thank you very much!!!! :D .
Greetings
cjd2
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cjd2
 
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Re: radial anisotropic

Post Thu Feb 04, 2010 11:01 pm

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cjd2
 
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Re: radial anisotropic

Post Fri Feb 05, 2010 12:44 am

Great image cjd2 :D
Just Vampires Playing To Be Mortals...
---------{--<@
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DarkTide
 
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Re: radial anisotropic

Post Sat Feb 26, 2011 9:21 am

hi DarkTide,

please can you repost your example file,link is not working.thanks.
rusted
 
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Re: radial anisotropic

Post Mon Mar 12, 2012 5:55 am

I'm wondering how to simulate this effect now, with 0.1.2beta3... I used one of Megasoft's build from November 2011 before and could make radial anisotropy. Now with 0.1.2 beta3 I couldn't reproduce it. In both cases a hand-drawn 4000x4000 px bump map was used. Any suggestions?
Attachments
aniso_bump_only.jpg
Earlier build of 0.1.2 from graphicall
aniso1.png
0.1.2 beta3 official addon with Blender 2.62
suomi
 
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