POV-Ray: Newsgroups: povray.advanced-users: isosurface troubles

POV-Ray : Newsgroups : povray.advanced-users : isosurface troubles		Server Time 22 Feb 2025 12:51:34 EST (-0500)

From: Paul Daniel Jones
Subject: isosurface troubles
Date: 12 Oct 2000 21:14:52
Message: <39E66083.44500D44@psu.edu>

PLease see the scene file in p.t.s-f.

I am trying to create an isosurface object, intersect it with a plane
and translate it. 
The last two lines of the code are for a sphere at <0,0,0> and <0,.5,0>.
Rendering each object seperatly will illustrate my woes.....

TIA (carrerra?)

:-)

paul

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From: Mike Williams
Subject: Re: isosurface troubles
Date: 13 Oct 2000 00:00:28
Message: <f6FsjAA0To55Ew0L@econym.demon.co.uk>

Wasn't it Paul Daniel Jones who wrote:
>PLease see the scene file in p.t.s-f.
>
>I am trying to create an isosurface object, intersect it with a plane
>and translate it. 
>The last two lines of the code are for a sphere at <0,0,0> and <0,.5,0>.
>Rendering each object seperatly will illustrate my woes.....

This Megapov bug has been mentioned before. When you translate a CSG
which involves an isosurface, the isosurface's contained_by info doesn't
get translated to the new position, which can lead to all sorts of odd
effects.

Until the bug gets fixed, don't translate CSGs that involve isosurfaces.

-- 
Mike Williams
Gentleman of Leisure

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