Strange artifact in isosurface landscape (Message 1 to 5 of 5)
From: Jörg 'Yadgar' Bleimann
Subject: Strange artifact in isosurface landscape
Date: 30 May 2007 07:02:34
Message: <465d59ca@news.povray.org>
High!
When rendering several views of a simple isosurface landscape (with
hetero_mf being used as main function), a strange effect occured:
shadows are cut by straight lines like indicated by the red arrows in
the attached picture. I remember having read about this problem here
several months before here, perhaps even in 2006, but I couldn't find
the respective posting...
Is there a way to fix this?
See you on www.khyberspace.de !
Yadgar
Now playing: Don't Work That Hard (Scritti Politti)
From: Joerg
Subject: Re: Strange artifact in isosurface landscape
Date: 30 May 2007 07:39:38
Message: <465d627a$1@news.povray.org>
do you have the double_illuminate keyword with your object?
have a look here:
http://www.povray.org/documentation/view/3.6.1/329/
I once had similar problems with some heightfields and could fix it using
double_illuminate
Regards
Joerg
> High!> > When rendering several views of a simple isosurface landscape (with > hetero_mf being used as main function), a strange effect occured: > shadows are cut by straight lines like indicated by the red arrows in > the attached picture. I remember having read about this problem here > several months before here, perhaps even in 2006, but I couldn't find > the respective posting...> > Is there a way to fix this?> > See you on www.khyberspace.de !> > Yadgar> > Now playing: Don't Work That Hard (Scritti Politti)> > ------------------------------------------------------------------------>
From: Jörg 'Yadgar' Bleimann
Subject: Re: Strange artifact in isosurface landscape
Date: 30 May 2007 08:44:36
Message: <465d71b4@news.povray.org>
High!
Joerg schrieb:
> do you have the double_illuminate keyword with your object?
Not yet - but I will try it out! Thank you for the tip!
See you on www.khyberspace.de !
Yadgar
Now playing: Falling Angel (Alphaville)
From: Christian Froeschlin
Subject: Re: Strange artifact in isosurface landscape
Date: 30 May 2007 11:10:20
Message: <465d93dc@news.povray.org>
> When rendering several views of a simple isosurface landscape (with > hetero_mf being used as main function), a strange effect occured: > shadows are cut by straight lines like indicated by the red arrows in > the attached picture.
Looks like these lines are present in the geometry itself.
Maybe reposition the camera to check it out.
according to the shadows of the spheres the lightsource is relatively low.
so it looks quite normal to me. the straight lines seem to come from the
isosurface's function.