Shave and a Haircut Question

[obeardy]

Originally posted by supremacy
Why does my grass look transparent? I have set diffusion to 1, so i don't know where the problem is.


Hair depth is not set to 1 maybe? the hair depth is used to give softer hair renders by making the hairs slightly transparent, the more depth levels the more transparent but the more hair passes are rendered.

[hundredthirtyseven]

Well, thanks man! My depth was set to 5, so that was the problem. I thought "depth" setting is always something like "quality" setting, and that was in the manual too...

[wuensch]

For hair, depth actually is quality--- but that is when you have like 100000 hairs on a head.Trie it out with long blonde hair, then you know what i mean--
For Gras its not.
Olli;-)

[hundredthirtyseven]

I have a new problem. Hair doesn't show up behind a refracting transparent object (this is actually a Glass sphere). I use the Shave Tracer object, I've put in onto an Environment object. Then I've set up the hair render settings.

I've tried "Full Hair", "Combined" and "Reflect&refract" modes, but none of them worked. So I might have missed something...Can anyone help me? Or is it a bug in S&H 2?

[cookepuss]

Have you tried adding a transparency tag to the transparent object and a hair transparency material to an environment object? Try page 93 of the manual.

[hundredthirtyseven]

Of course I've tried, but adding transparency tag and hair transparency hasn't changed anything, and IMO it never will, cause these are only for flat transparent surfaces according to the manual. The Manuel says, that for this purpose I must use the Shave Tracer.

And one more thing I've just noticed, maybe the problem lies here. When I add the Shave Traces to the environment obcejt, the whole scene lightning gets darker! The same thing happens when I add Hair Shadows material to the Enviroment Object. Have I done something wrong with the Enviroment Object?

[cookepuss]

Of course I've tried, but adding transparency tag and hair transparency hasn't changed anything, and IMO it never will, cause these are only for flat transparent surfaces according to the manual.

It works fine on objects that aren't flat. I have transparency working just fine on non-planar objects too, with Shave Tracer off and on. :hmm: Shave Tracer is just optimally suited for transparent objects that also have an index of fraction, probably greater than 1.0.

Have you disabled the Post Composite option?

[hundredthirtyseven]

The problem here is that my glass sphere has some refracrion. So when I just normally render the hair with the transparency tag and material, my hair is just not there where the head is:) because of the refraction. And when I enable the Shave Tracer, nothing gets rendered.

[cookepuss]

Okay, now I'm on the same page is you. I did notice that. The object refracts just fine. The hair refracts fine at the tips and the length, but the refraction at the root level is waaay off. This is most apparent in hairy hypernurbs object, where the hair won't properly refract to conform with the refracted cage.

That might very well be a bug. I'm going to try converting the hair over to polygons. That, in theory, should fix this issue. Not an ideal solution, but....

If this is indeed a bug one can hope that it has been fixed in 2.5, which it has been hinted at as forthcoming for c4d.

[obeardy]

Originally posted by cookepuss
If this is indeed a bug one can hope that it has been fixed in 2.5, which it has been hinted at as forthcoming for c4d.

Sorry but we can't fix something we don't know about. I've forwarded this info, but as 2.5 is already "out of the door" if it is actually a bug it may not be in the included fixes unless related to one of the already fixed issues, but as far as I recall, the tracer has had no fixes since no issues were (or are afaik) known about.

[cookepuss]

Sorry but we can't fix something we don't know about.

I'm 100% unaware of what has or has not already been reported. I just discovered this oddity myself. To me, it would seem to be a fairly logical assumption that a number of users would have already encountered this issue too. After all, transparent objects aren't that uncommon.

Would that I could, I'd go back in time and report this potential bug. I can't. No use crying over spilt milk. A workaround time it is... Maybe I just overlooked something in the manual. Could be my fault.

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