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Hello,
I have encountered two situations in which the render contains
some pixel artifacts (and it doesn't seem to be incident surfaces
or maximum trace level). Tested using POV-Ray 3.6 and Mega-Pov 1.2.1
on Windows XP, minimum sample code for each case is included below.
Also, does anyone else have problems logging into the forums?
I couldn't log in using Netscape 7.2, and after resorting to
IE6 (*shudder*), I was prompted to login again after clicking
"Preview" and lost the message text on the first attempt.
Case 1: Transparent blobs filled with media, you should see some
black pixels near the top of the white blob. Adding the
sturm keyword makes matters a lot worse.
global_settings
{
assumed_gamma 1.0
max_trace_level 10
}
camera
{
location <0.0, 1.0, -5.0>
look_at <0.0, 1.0, 0.0>
angle 90
}
light_source {< -10, 10, -10> color rgb 1}
blob
{
threshold 0.6
sphere {0, 5, 1 scale <1, 0.3, 1>}
sphere {0, 1, 1 scale <1, 0.8, 1> translate y}
hollow pigment {color rgbt 1}
interior
{
media
{
scattering {1, color rgb 0.5}
}
}
}
-------------------------------------------------------------------
Case 2: Box which has been subtracted from twice in CSG difference
operations (even if 0 objects were subtracted, but only if
some other objects are around, so the code below looks a
bit silly). You should see a lot of white pixels in the
box edges, although everything should be ambient level.
global_settings
{
assumed_gamma 1.0
}
camera
{
location 1
look_at 0
}
light_source {< -10, 10, -10> color 50}
sphere {5,0.1} /* Dummy object */
difference
{
difference
{
box {0, 2}
}
pigment {color rgb 1}
}
sphere {5,0.2} /* Dummy object */
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"Christian Froeschlin" <chr### [at] chrfr de> wrote:
> Hello,
> Also, does anyone else have problems logging into the forums?
> I couldn't log in using Netscape 7.2, and after resorting to
> IE6 (*shudder*), I was prompted to login again after clicking
> "Preview" and lost the message text on the first attempt.
I haven't had a look at your POV problem yet, although blobs filled with
media sounds interesting - I've never tried that!
As for problems logging in...
I did have some problems once. It was because I had set my browser to
accept cookies from povray.org but not news.povray.org. If you can get in
using IE but not NetScape - this might be your problem. Don't know about
the having to log in again when previewing message. That sound's like
either a server glitch, timeout or connection problem.
Post a reply to this message
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FrogRay wrote:
> I haven't had a look at your POV problem yet, although blobs filled with
> media sounds interesting - I've never tried that!
Thought it might make a fluffy picture book cloud ;)
> I did have some problems once. It was because I had set my browser to
> accept cookies from povray.org but not news.povray.org.
Ah, that could have been it. But since I now realized this thing has a
real news server, I just use a news reader instead of the web interface.
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"Christian Froeschlin" <chr### [at] chrfrde> wrote:
> Also, does anyone else have problems logging into the forums?
I used to have a problem where it would repeatedly give me the log-in prompt
if I'd correctly type my password, or tell me that I'd typed an invalid name
or password if in fact I'd mis-typed it. I think it might've been a latency
issue with my slow internet connection which has one way or another gone
away.
> I couldn't log in using Netscape 7.2, and after resorting to
> IE6 (*shudder*), I was prompted to login again after clicking
> "Preview" and lost the message text on the first attempt.
For this part, I think that's normal - it just means you took too long
typing. When that happens, what I do is click "Back", copy the entire
contents of the text box and then hit "Back" again to get to the original
message I was replying to, or where I can hit new-message-to-this-group if
it's a new post. I.e. start over, but this time there's no typing to do.
PS I think I'm seeing the same thing when rendering the code (unofficial
3.6.0).
Charles
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