POV-Ray : Newsgroups : povray.binaries.images : Raining... : Re: Raining... Server Time
4 Nov 2024 20:14:47 EST (-0500)
  Re: Raining...  
From: Trevor G Quayle
Date: 16 Feb 2007 17:00:01
Message: <web.45d6287bd45e36bfc150d4c10@news.povray.org>
"s.day" <s.d### [at] uelacuk> wrote:
> Hi Trevor,
>
> Firstly, thanks for creating the CGSphere template file, it's great to have
> a POV template to play with.

No problem, too bad they don't have a way of sorting by POV submissions to
see what's all been submitted, still have to submit under "other".

> This is a great image, I agree that the
> droplets on the lense need a less round shape and have a thought about the
> rain droplets. Have you tried using multiple copies of each droplet giving
> higher droplets a higher level of transparency? I have used this effect to
> make a wheel look like it was moving and it worked quite well but it does
> hurt the render times a lot!!
>
> Other than that it is a great image and the water looke excellent.
>
> Sean

Thanks for the comments.  The only problem the multiple copy aspect is the
effect of ior, you can average out the appearance with increased
transparency, but I'm not sure how you can average out the refraction (and
reflection as I use fresnel).

Anyways, I have ran another render with a few changes:
1. adjusted the drops on the glass so they have more of a drooping
appearance as suggested.
2. changed the falling drops to spheres as real raindrops should be
(unfortunately this takes away the falling effect of the rain :( )
3. changed the cracked paint to an actual isosurface instead of just surface
normals to make it 'stand out' more. (for some reasons normals always look
flat to me)



-tgq


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