POV-Ray : Newsgroups : povray.binaries.images : Colony ship : Re: Colony ship Server Time
19 Apr 2024 20:32:58 EDT (-0400)
  Re: Colony ship  
From: Mike Horvath
Date: 9 Jan 2016 19:50:59
Message: <5691aaf3$1@news.povray.org>
On 1/9/2016 7:07 PM, clipka wrote:
> Am 10.01.2016 um 00:38 schrieb Mike Horvath:
>
>> I also tweaked the parabolic nose shield. I am very unhappy with the
>> texture however. It's supposed to simulate a wire mesh, not a solid
>> surface, but I don't think it's working. Here is the texture:
>
> No that indeed doesn't work at all.
>
> You'll want "micronormals", i.e. some "normal {...}" statement with a
> pattern scaled so small that it is no longer visible in the image.
>
> Ideally the structure of the pattern should match the structure of
> whatever material you intend to simulate.
>
> Make sure you don't get moiree effects from it though; anti-aliasing
> might do the trick, otherwise I'd recommend using a tiny bit of focal
> blur, or use UberPOV's anti-aliasing mode 3. Or you might just choose a
> random pattern, which won't be as close to the real deal but will not
> cause any moiree at all.
>
> Speaking of UberPOV, if you go down that route another alternative would
> be to just use highly blurred reflections.
>


I guess I should clarify that what you see in that last image is not a 
texture, but a physical array of cylinders and tori. Replacing them with 
a proper texture would make the scene render much faster as well.


Mike


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