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Vheissu
07-22-2008, 09:49 AM
Ok, when I was browsing the web, I had come across a piece that I thought was worth trying.
http://farm1.static.flickr.com/100/304924668_46ebae1a8a.jpg
http://farm1.static.flickr.com/100/304924668_46ebae1a8a_o.jpg <--bigger version
This is what it looks like, now I've tried, but I have no clue as how to approach making this.
I can sort of get the lighting, but its nothing like this, and the material is beyond me. When ever I make one the material wraps around and looks nothing like the rings in that.
So can anyone offer any assistance as how to get something like this?

Bob3D
07-22-2008, 10:03 AM
You can achieve the rings using a gradient in the colour and luminance channels of the material. Just change the interpolation in the gradient settings from 'cubic knots' to 'none' to get the sharp boundary between the black and white areas. Have a play with this, it's fairly simple.

Now the crucial thing to get the stripes right is to change the way that the gradient is mapped to the surface of your sphere.
- In the gradient settings in the material editor, change the type from 2D-U to 3D Linear. You should see that you get what you want in the preview. You might want to have a play with these anyway just to see what they all do.
- When you put the material on the sphere in the scene, set the projection to flat.

A bit of reflection and a high-ish brightness setting in the luminance channel (just copy the gradient from the colour channel) should give you the lighting effect there if you set Global Illumination on in the render settings. You might want to play with the exact settings to get it spot on though.

Hope this helps.

Bob

Vheissu
07-22-2008, 10:20 AM
Ahh, I see. Well as for the rings part goes.
But the part for the light. If by global illumination, you mean the option in render settings, that whole section is grayed out.
The whole
A bit of reflection and a high-ish brightness setting in the luminance channel (just copy the gradient from the colour channel) should give you the lighting effect there if you set Global Illumination on in the render settings. You might want to play with the exact settings to get it spot on though.
Bit kind of confuses me. (I'm still a bit of a n00b, haha).
I have the reflection, that's an easy one, but doesn't the luminance channel make the whole object brighter, not really helping with the lighting part.

Any ideas as how to get global illumination available.

Srek
07-22-2008, 10:21 AM
Just convert a standard sphere to polygons and select four rings of polygons, apply a 100% luminating material to them. Inverse the selection and apply a dark high reflective material to that.
Create a plane with a light blue color, distirbute some of the spheres to your likeing, enable GI, disable autolight and render.
Attached a try from me done in just a few minutes.
Cheers
Björn

Srek
07-22-2008, 10:27 AM
Without GI it's a bit more difficult. Maybe try Area light with the polygons from the rings as shape for the light.
Cheers
Björn

Vheissu
07-22-2008, 10:37 AM
Ohh, I see why GI isn't able to be enabled, I forgot to enter my key for Advanced Render Settings...

I'll keep what you said in mind. ^_^

Srek
07-22-2008, 10:45 AM
Be prepared that the Are Light solution will require very high sample settings for the light and the area shadow. Rendertimes with GI should be way shorter.
Cheers
Björn

Vheissu
07-22-2008, 10:51 AM
Yeah I decided just to reinstall and input my advanced render settings key, that way I can use GI. ^_^

Anyways, thanks a lot for the help. I'll post back if I can't figure it out. :)

chrisluke
07-22-2008, 11:52 AM
Here's a link to the actual scene file. I recently found it and was studying it myself.

:thumbsup:

http://www.loftmediagroup.com/light_balls.c4d

Vheissu
07-22-2008, 12:22 PM
Oh sweet thanks.
I've gotten it, at least mostly. The only current problem(s) I'm having is with the light showing up on the floor, and the reflectiveness in the middle (it gets kind of dull).

donelgreeko
07-22-2008, 01:12 PM
Hi!

Nice to see my picture again:) For two or three years someone made a tutorial from my pic so here it is.

http://tutorials.designnation.de/workshop/Leuchtende-Kugeln-mit-GI

It's written in german. Someone made an english tutorial, too but I can't find it anymore.

vid2k2
07-22-2008, 01:31 PM
Using Babel Fish, you can get a bit more out of it :)

http://babelfish.yahoo.com/translate_url?doit=done&tt=url&intl=1&fr=bf-res&trurl=http%3A%2F%2Ftutorials.designnation.de%2Fworkshop%2FLeuchtende-Kugeln-mit-GI&lp=de_en&btnTrUrl=Translate

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