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I've been trying to create a scene with an ambient fog using an
atmospheric media, but when I can get it to render the objects in the
scene properly it's too bright and there doesn't seem to be any
attenuation of the light from the street lamps. Other times it does one
of two things: a. It blacks out the scene and nothing is visible. b. It
renders, but there's a "sticky" gray covering around everything that
clings like fifty years of dust. Not even a color variation.
I've tried perusing the preconstructed scene files that deal with
media but they don't even go into using ambient media with point lights.
I've tried setting up my media statement several different ways, I
used just about every trick I can think of which, admittedly, isn't much
considering I have to learn by trial and error. I've experimented with
every scattering type, using interval settings fro 10 to 80. I've tried
various sample permutations from 1, 10 to 5, 15. I've tried different
ratio setting between 0.5 and 0.9. And several different density
statements and color maps.
I've looked all over the internet for tutorials that pertain to
media, but none of the sites that I found even dealt with Pov-ray 3.1,
only prior versions, or third party implementations.
Does anybody have an idea of what I might be doing wrong? Or, at
least where I can get some detailed information on the use of media?
A.D.B.
Post a reply to this message
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Unfortunately there isn't a huge amount in the way of media tutorials out
there. Here are a few that I have come across in the years that 3.1 has been
out.
http://free.prohosting.com/~olana/povray/media2/media2.html
http://www.geocities.com/SiliconValley/Sector/4317/atmos_tutorial/atmos.html
(Hmm.. several of the links I have expired so that's about all the net
related stuff I have)
The best way to learn is by example, take a look at all the images here
which contain media and look for the posts where the author has contributed
code to p.b.s.f and b.t.s.f and look at the tutorials in b.t.t. A good
keyword to search for is clouds or media clouds. Hope this helps.
"banty" <ban### [at] rapidnet com> wrote in message
news:3B99ADC2.E8BA11E8@rapidnet.com...
> I've been trying to create a scene with an ambient fog using an
> atmospheric media, but when I can get it to render the objects in the
> scene properly it's too bright and there doesn't seem to be any
> attenuation of the light from the street lamps. Other times it does one
> of two things: a. It blacks out the scene and nothing is visible. b. It
> renders, but there's a "sticky" gray covering around everything that
> clings like fifty years of dust. Not even a color variation.
> I've tried perusing the preconstructed scene files that deal with
> media but they don't even go into using ambient media with point lights.
>
> I've tried setting up my media statement several different ways, I
> used just about every trick I can think of which, admittedly, isn't much
> considering I have to learn by trial and error. I've experimented with
> every scattering type, using interval settings fro 10 to 80. I've tried
> various sample permutations from 1, 10 to 5, 15. I've tried different
> ratio setting between 0.5 and 0.9. And several different density
> statements and color maps.
> I've looked all over the internet for tutorials that pertain to
> media, but none of the sites that I found even dealt with Pov-ray 3.1,
> only prior versions, or third party implementations.
> Does anybody have an idea of what I might be doing wrong? Or, at
> least where I can get some detailed information on the use of media?
>
>
> A.D.B.
>
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Do you mean something like this?
(Note that it's rendered with pov3.5, where the default media method is 3.)
Post a reply to this message
Attachments:
Download 'MediaTest.jpg' (15 KB)
Preview of image 'MediaTest.jpg'
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Thanks for the tips. I hope the help.
A.D.B
banty wrote:
> I've been trying to create a scene with an ambient fog using an
> atmospheric media, but when I can get it to render the objects in the
> scene properly it's too bright and there doesn't seem to be any
> attenuation of the light from the street lamps. Other times it does one
> of two things: a. It blacks out the scene and nothing is visible. b. It
> renders, but there's a "sticky" gray covering around everything that
> clings like fifty years of dust. Not even a color variation.
> I've tried perusing the preconstructed scene files that deal with
> media but they don't even go into using ambient media with point lights.
>
> I've tried setting up my media statement several different ways, I
> used just about every trick I can think of which, admittedly, isn't much
> considering I have to learn by trial and error. I've experimented with
> every scattering type, using interval settings fro 10 to 80. I've tried
> various sample permutations from 1, 10 to 5, 15. I've tried different
> ratio setting between 0.5 and 0.9. And several different density
> statements and color maps.
> I've looked all over the internet for tutorials that pertain to
> media, but none of the sites that I found even dealt with Pov-ray 3.1,
> only prior versions, or third party implementations.
> Does anybody have an idea of what I might be doing wrong? Or, at
> least where I can get some detailed information on the use of media?
>
> A.D.B.
Post a reply to this message
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