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I've been trying to make a pretty simple indentation of a cross. I'm
taking 2 cubes, one scaled up on the z axis, one scaled up on the y axis
and combining (I've tried both Union and merge) the two. I am then using
the difference option subtracting that from a bigger object. The problem
is that when I render the whole thing I get a strange cube or square
shape in the center of the cross that is darker than the rest of the
indentation. At first I thought that it might be a shadow but moving the
light around didn't help. I've double checked the scaling and placement
of all the object and haven't found any mistakes.
Anybody got any ideas as to whats going on?
Thanks Steve
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Hi Steven Kroeger, you recently wrote in moray.win:
> Anybody got any ideas as to whats going on?
You may want to post the MDL file for us to take a look at, if nobody
has any ideas.
- Lutz
email : lut### [at] stmuc com
CIS : 100023,2006
Web : http://www.stmuc.com/moray
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Okay here is the file. Please don't laugh to much everybody has to start
somewhere. I changed the texture to all white to make sure it wasn't a
texture thing. The dark spots are still there.
Later, Steve.
Lutz Kretzschmar wrote:
> Hi Steven Kroeger, you recently wrote in moray.win:
>
> > Anybody got any ideas as to whats going on?
> You may want to post the MDL file for us to take a look at, if nobody
> has any ideas.
>
> - Lutz
> email : lut### [at] stmuccom
> CIS : 100023,2006
> Web : http://www.stmuc.com/moray
Post a reply to this message
Attachments:
Download 'grave.mdl.dat' (4 KB)
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On Tue, 31 Mar 1998 23:03:04 +0200, Steven Kroeger
<ste### [at] interquestde> wrote:
>Okay here is the file. Please don't laugh to much everybody has to start
>somewhere. I changed the texture to all white to make sure it wasn't a
>texture thing. The dark spots are still there.
If you change, for example, the translate-Y for the object named
Cube004 to -3.751, the problem goes away. It seems that POV is
confused by intersecting with two objects (the two cubes) in exactly
the same place, and it allows them to cancel each other out. The dark
spot you're seeing is the back side of the gravestone, as you can see
if you place a red point light source _inside_ the gravestone.
This is a common problem with differences, but I've never seen it
manifest itself in precisely this way before.
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