United3dArtists Archive

Karthogen · Post by **Karthogen** » 14 Sep 2009, 00:15

It's Like a blind taste test:
Render A:
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/6k-Cna-MJeE&hl ... ram><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/6k-Cna-MJeE&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

Render: B:
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/xoJMLWKzm7w&hl ... ram><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/xoJMLWKzm7w&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

Which one Is more apealing.

Karthogen · Post by **Karthogen** » 14 Sep 2009, 00:47

I think I like the top one better.

Steinie · Post by **Steinie** » 14 Sep 2009, 01:15

Render "A" has a ceramic look and Render "B" is
sparkly. I think "A" gets my vote.

LeonRegis · Post by **LeonRegis** » 14 Sep 2009, 01:17

Karthogen I think the Render B better than the A. The A looks like ceramic or plastic and much diffuse or something like that, the second look like an Rock solid asteroid and in my perception it's better.

Finis · Post by **Finis** » 14 Sep 2009, 02:47

Neither looks like an asteroid to me. I'd take A because it is not sparkling.

Karthogen · Post by **Karthogen** » 14 Sep 2009, 04:16

I was looking more for a larg chunk of Iron, since that would be the planet killer that would not burn up in the atmosphere. It really wouldn't be so shiny without a polish, but it looks like crap with just a flat difuse.

Finis · Post by **Finis** » 14 Sep 2009, 14:48

I'd use phong reflective shader with a photo map of a real asteroid or a moon wrapped as a texture and bump.

marcel · Post by **marcel** » 14 Sep 2009, 15:11

It is not a problem of textur but a problem of light: an asteroid can be glossy or mat. it depend of the material (ice, carbon, metal,...). We have only one sun in our system. And only one light to see an object in the space. There is no atmosphere, so no penumbra. Photos from deap space are very contrasted. The shadow of the asteroid merges with the background and if you can't see all around the object it will be more real.

Karthogen · Post by **Karthogen** » 14 Sep 2009, 15:25

I have been heavily reliant on phot maps so I was attempting to create the material from scratch with just a bump map that I consolidated from multiple crater photos.

Karthogen · Post by **Karthogen** » 17 Sep 2009, 01:13

went with the photo uv mapped. Any comments or critiques are more than welcome, I think the specular still looks odd.

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/U3m3lLFLweU&hl ... ram><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/U3m3lLFLweU&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

LeonRegis · Post by **LeonRegis** » 17 Sep 2009, 01:28

Depends on what you wants, do you have specified the material of the asteroid? Still looks like ceramic or some kind of metal or plastic because of the reflectance, if you want a rock asteroid (most of them are made of this) you want to make it diffuse with no reflections because the rock absorber the light and not reflect it. The specular is something that you just need to change and test several times till reach the result

Karthogen · Post by **Karthogen** » 17 Sep 2009, 13:18

I want it to ultimately look like a large chunk of Iron in space. I may have to add an additional layer of normal rock and just let some veins of the iron show through.

LeonRegis · Post by **LeonRegis** » 17 Sep 2009, 15:05

Try and see, it's the only way

Steve · Post by **Steve** » 15 Oct 2009, 21:09

Needs some bump mapping, the specular highlights don't seem right

Karthogen · Post by **Karthogen** » 26 Oct 2009, 13:08

For some reason this is giving me just a lot of issues.

Thank you for the comment weevil, I realized I was missing a specular map for this one, I just figured out how to do that. for some reason the Bump STill just doesn't seem right. I also realized I was realy stretching my textures with my UV map, so I tried to fix that.

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/tovt_SX35EM&hl ... ram><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/tovt_SX35EM&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

Karthogen · Post by **Karthogen** » 28 Oct 2009, 00:51

So I think I finally fixed the Bump and the stretching on the texture. I beleive I hid the seams pretty well but, let me know if you see them.

<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/U-SBRrFdf90&hl ... ram><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/U-SBRrFdf90&hl=en&fs=1&" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="425" height="344"></embed></object>[/youtube]

I still can not decide on the specular, I am trying to get a huge chunk of metal in space.

Dragneye · Post by **Dragneye** » 31 Oct 2009, 20:07

Just my opinion, but I think it's still too shiny. It may be the scale. It reflects/refracts (whatever) too wide/long an area at any given moment. The reflected area should be tighter as the light hits it, and have more 'reflective detail' per square meter if you're going for massive.

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