POV-Ray : Newsgroups : povray.binaries.animations : Mysterious vanishing isosurface : Re: Mysterious vanishing isosurface Server Time
7 Jul 2022 03:02:05 EDT (-0400)
  Re: Mysterious vanishing isosurface  
From: William F Pokorny
Date: 11 Dec 2016 09:09:22
Message: <584d5e12$1@news.povray.org>
On 12/10/2016 07:50 AM, Mike Horvath wrote:
> On 12/9/2016 12:55 PM, William F Pokorny wrote:
>> On 12/08/2016 09:36 PM, Mike Horvath wrote:
>>> If I rotate the camera 90 degrees around the x axis, the isosurface
>>> disappears.
>>>
>>> Mike
>>
>> Is there any chance the camera is ending up inside the contained_by
>> shape for the isosurface?
>>
>> Bill P.
>
> I don't think so. My camera is 17 units away from the origin, and the
> contained_by area is only 1 unit wide.
>
> (These values then get scaled by 200000.)
>
> Mike

OK - it was a shot in the dark. I've not followed your color space 
function() development.

A suggesting is trying the isosurface coded in your scene at a rotations 
around where it is breaking up, at a low resolution, no aa+, area light, 
etc., as

isosurface {
}

not used by reference (github #114 (#113 is related)), so you get some 
idea what the max gradient really is and how it is changing.

Bill P.


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