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TTYO
05-31-2007, 03:33 PM
Hello I wish to start all over in 3d again.....

OK I was given the comment that my eyeballs ain't too realistic......

I wish to know how do I model eyeballs realistically, I repeat realistically, the tutorials out there are mostly for pixar eyes!

http://farm1.static.flickr.com/213/510659286_4f2500263a.jpg
(http://farm1.static.flickr.com/213/510659286_4f2500263a.jpg?v=0)

Pixelclown
08-14-2007, 11:38 AM
Hi, did you try this one yet?

http://www.3dluvr.com/content/article/59/1

It looks like comic eyes as well, but comes with a good geometry:

http://www2.3dluvr.com/11/59/S11A59FIL03.jpg

Photon4D
08-14-2007, 11:42 AM
Don't know what program you use but there are some good MAYA eyeball tutorials HERE (http://gnomonology.com/prod/1)


Hello I wish to start all over in 3d again.....

OK I was given the comment that my eyeballs ain't too realistic......

I wish to know how do I model eyeballs realistically, I repeat realistically, the tutorials out there are mostly for pixar eyes!

http://farm1.static.flickr.com/213/510659286_4f2500263a.jpg
(http://farm1.static.flickr.com/213/510659286_4f2500263a.jpg?v=0)

purpose
09-01-2007, 04:00 AM
the link given looks good. this one here. http://www.3dluvr.com/rogueldr/tutorials/eye/eyes.html

but i didnt get enough info from his tutorial. what exactly are these shapes that im seing.

Eyeball - obviously a sphere
Iris- A torus??
Pupil - Flat circle. Does that ned to be souble sided??
Cornea - wtf is that???

Nest question. The Iris bends inward. How can i do that nicely?? Im assuming I can use either nurbs or polys. But which works better for the texture??

next - I searched for an eye white shader, and couldnt find it. Do I emulate it on my own?? If so , which attr to adjust? just spec(100%) color(white) and reflection(100%)??

The Eye White shader
http://www.3dluvr.com/rogueldr/tutorials/eye/eyewhite_shader.jpg The eye white shader simulates a fresnel like reflection where the reflection is more visible around the sides of the object and is less visible head on (although it doesn't look like it, there's is). It has a very high specularity value in order to create a sharp specular reflection.



next- assuming to just adjust addressed attributes. Correct me if Im wrong.

Pupil shader http://www.3dluvr.com/rogueldr/tutorials/eye/pupil_shader.jpg The pupil shader is very simple. Its a flat black color. There is no specularity or shininess settings. It doesn't have an ambient value either. This way it will be black when responding to light. Next- Wheres the Iris shader???
Iris shader http://www.3dluvr.com/rogueldr/tutorials/eye/iris_shader.jpg The iris shader has a texture map for color. The specular color is a map as well so it lights in a realistic manner. The specular settings are set in a way that you get a wide highlight but not a sharp one.
i hope yall dont make a mkery out of me but as you can see, i have little clue, but i NEED to figure this out.
thx.

purpose
09-01-2007, 06:22 PM
deleted my double post

BeSStia
09-01-2007, 11:30 PM
Remember that the eye white does have small veins and a redish tint towards the edge. Also the transition between the iris and the white is not a sharp one, the iris kind of blurs out on the border and fades into the white part, itīs subtle but itīs there. Hope this two tips help you a bit further.
Oh, one more, iīm under the impression that the white is not that glossy, itīs rather a really thin, thus almost completely transparent membrane, covering it thatīs highly reflective.

Regarding this:

Eyeball - obviously a sphere Yup
Iris- A torus?? A plane slightly pushed in towards the center
Pupil - Flat circle. Does that ned to be souble sided?? Just a black plane behind the iris opening
Cornea - wtf is that??? Itīs a small lens, a plane bluged out towards the center that bends light, transparent

purpose
09-02-2007, 01:33 AM
thanks BeSStia (http://forums.cgsociety.org/member.php?u=164702), Im gonna tryi this out tomorrow

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