POV-Ray : Newsgroups : povray.binaries.images : Using a couple of proximity patterns : Re: Using a couple of proximity patterns Server Time
31 Jul 2024 14:28:13 EDT (-0400)
  Re: Using a couple of proximity patterns  
From: Thomas de Groot
Date: 5 Sep 2009 03:59:40
Message: <4aa21a6c$1@news.povray.org>
"Edouard" <pov### [at] edouardinfo> schreef in bericht 
news:web.4aa0e4149d317c83c83e2c410@news.povray.org...
>
> "Oh dear, mine looks terrible"

Probably the settings....

>
> What are the parameters you're using (for the macro and for the textures)? 
> It
> might be able to be improved a little.

#declare interpolation_mode = 2;
#declare resolution = <80,80,80>;
#declare num_samples = 60;
#declare sample_radius_fraction = 4;
//Proximity_SetBailoutValue( 30 )
#declare add_noise = true;

I used your demo pigment_pattern code without changes;
as pigment_map I used:
        pigment_map {
            [0.30 color rgb <0.837064, 0.814426, 0.762936>]
            [0.50 color rgb <0.625, 0.5729, 0.454396>]
            [0.60 color rgb <0.3854, 0.395833, 0.1875>]
        }

Not being entirely sure about what I am doing, I am sure that you can 
improve on this :-)  However, Marc might be right about the difficluty in 
tuning a regular surface.

>
> I am interested in the rendering speed, as I was hoping that, at least, 
> would be
> faster than other methods. Can you give some more timings?

I did not really note those down. What I remember is that apart from the 
parsing of the df3 which took about 30 minutes, the render was finished in 
no more than 4 minutes on a dual core machine.

Thomas


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