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Ok, I didn't render this last night because in the end, I realised that
there was too much to play with so did the playing this morning instead. :)
I've just rendered this image now, it took 1 hour 22 minutes with
area_light turned on and normal AA. I changed the colours of the glass to be
less pale as per Thomas' suggestion, but are these colours too vivid now? I
also made the glass more opaque which kind of looks good to me, but what do
you think?
Lastly, I changed (for now) the lamp stand from Gold_Metal to T_Gold_2A
which looks better imo. I haven't tried to make it look bronze yet, and I
might need some help with that, but anyway, that's the next thing to try.
Oh, and a power cable with possibly one of those switches that hangs down...
oh, you know what I mean. :)
~Steve~
Post a reply to this message
Attachments:
Download 'snapshot2.jpg' (229 KB)
Preview of image 'snapshot2.jpg'
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"Alain" <ele### [at] netscape net> wrote in message
news:4984fe9d@news.povray.org...
> St. nous illumina en ce 2009-01-31 07:13 -->
> Have you tryed using photons and some micro normals for the shade?
Photons is there in my code Alain, but it's commented out. ;) I did try it
but the first couple of lines took a while iirc.
As for the normals, I've got this:
normal{ bumps .5 scale .0001}
enabled on the glass, but it's not actually showing now when it should be
like in that other image. Hmm, I wonder why that is?
Or some
> averaged normals? If you use averaged normals, don't use to many, try with
> 5 and don't go over 10 to 12. That way, a point light shadow will receive
> light from the glass parts. There will also be some colour bleeding from
> area to area.
Ok, this sounds good, but I've never used average normals, so how would I do
that?
> Tifany lamps, if I remembre correctly, only rarely use realy transparent
> glass, but more cloudy and translucent ones. And, often, the transparent
> glass was far from flat and uniform.
Yes, I know what you mean, I think I've got the translucency ok now, so
I'll try to warp the glass panels a little. Should look good I think.
>
> When averaging normals with reflections, 10 averaged normals give 10
> samples.
> When averaging normals with transparency, the first surface generate 10
> samples, and each one of those, when encoutering the second surface,
> generate 10 more. This result in 100 total samples per pixel.
Is this a slow process? It does sound good.
>
>
> Do you know that Mr. Tyfany was a precurson in recycling? He started
> making his lamps to recuperate the breaked glass he all to often got in
> his glass deliveries. He also reused the bits left over after making
> stained glass for churches.
Do you know what? It all makes sense now. I never got the link to the
recycling part. <Ding!/lightbulb> Heh...
~Steve~
>
> --
> Alain
> -------------------------------------------------
> Don't waste your time on a man/woman, who isn't willing to waste their
> time on you.
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St. wrote:
>
> :) Why not? If I increase it, it gets darker.
Then you'll add more light and/or fix your display gamma in povray.ini
(so POV's preview looks correct):
Display_Gamma = 1.6 (that my laptop's setting, check your own
monitor)
http://www.normankoren.com/makingfineprints1A.html#gammachart
> ~Steve~
-Aero
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"Mike Hough" <nos### [at] nospamcom> schreef in bericht
news:49848f0f$1@news.povray.org...
> Will look real nice with the area light enabled. The glass seems almost
> like it is glowing. If you are using ambient for that part, I would try
> turning that off and trying double_illuminate instead. Might give it a
> little more depth.
>
Aah! High ambient! that explains a lot! I would settle for some intermediary
value in this case.
Thomas
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"Eero Ahonen" <aer### [at] removethiszbxtnetinvalid> wrote in message
news:4985654d$1@news.povray.org...
> St. wrote:
>>
>> :) Why not? If I increase it, it gets darker.
>
> Then you'll add more light and/or fix your display gamma in povray.ini
> (so POV's preview looks correct):
> Display_Gamma = 1.6 (that my laptop's setting, check your own
> monitor)
>
> http://www.normankoren.com/makingfineprints1A.html#gammachart
Cool. Thanks, it says 2.2 or 1.8. I tried both of these in the
povray.ini file and it's still too dark.
~Steve~
>
>> ~Steve~
>
> -Aero
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"St." <dot### [at] dotcom> schreef in bericht news:49856234@news.povray.org...
> Ok, I didn't render this last night because in the end, I realised that
> there was too much to play with so did the playing this morning instead.
> :)
>
> I've just rendered this image now, it took 1 hour 22 minutes with
> area_light turned on and normal AA. I changed the colours of the glass to
> be less pale as per Thomas' suggestion, but are these colours too vivid
> now? I also made the glass more opaque which kind of looks good to me, but
> what do you think?
>
> Lastly, I changed (for now) the lamp stand from Gold_Metal to T_Gold_2A
> which looks better imo. I haven't tried to make it look bronze yet, and I
> might need some help with that, but anyway, that's the next thing to try.
> Oh, and a power cable with possibly one of those switches that hangs
> down... oh, you know what I mean. :)
>
Ah yes, this begins to look good. The colors are a bit too *primary* to my
taste. You could try to use somewhat *off* reds, yellows, and blues; maybe
even a very tiny bit different for each piece of glass. A bit darker too.
Scale down the ambient too. Maybe a value around 0.5 will look nice. The
opacity is allright I think.
A bronze I use, but which might not be correct for your base, is the
following, originally from Texture Magic:
texture {
pigment {
colour rgb<0.549,0.467,0.137>
}
normal { granite 0.1 scale 0.01 }
finish {
ambient 0
diffuse 0.7
brilliance 2.0
specular 0.3
roughness 0.005
metallic
}
}
Thomas
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St. wrote:
>> http://www.normankoren.com/makingfineprints1A.html#gammachart
>
> Cool. Thanks, it says 2.2 or 1.8. I tried both of these in the
> povray.ini file and it's still too dark.
Use the test patterns provided on that page. Neither my laptop nor my
desktop's CRT have 1.8 or 2.2.
> ~Steve~
-Aero
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"Thomas de Groot" <tDOTdegroot@interDOTnlANOTHERDOTnet> wrote in message
news:49856b61$1@news.povray.org...
> Ah yes, this begins to look good. The colors are a bit too *primary* to my
> taste. You could try to use somewhat *off* reds, yellows, and blues; maybe
> even a very tiny bit different for each piece of glass. A bit darker too.
> Scale down the ambient too. Maybe a value around 0.5 will look nice. The
> opacity is allright I think.
Here's the next one with AA and area_light on. Amazingly, this rendered
in only 58 minutes. I've used 0.5 on the coloured glass for the ambient in
this one, and diffused the glass colours by 25%. I'm not sure about it, so I
think I'll try 0.75 to see what that looks like, but what do you think? Ok
at 0.5?
>
> A bronze I use, but which might not be correct for your base, is the
> following, originally from Texture Magic:
>
> texture {
> pigment {
> colour rgb<0.549,0.467,0.137>
> }
> normal { granite 0.1 scale 0.01 }
> finish {
> ambient 0
> diffuse 0.7
> brilliance 2.0
> specular 0.3
> roughness 0.005
> metallic
> }
> }
Thanks Thomas! That's actually quite nice as it is, but it came out kind of
matt in appearance so I put the metallic in a reflection block and added
conserve_energy to give it some shine. I think it might have too much
reflection now though. The normals show a little too much but they should
look better when using better AA.
Oh, and added a switch. :)
~Steve~
> Thomas
>
>
>
Post a reply to this message
Attachments:
Download 'snapshot3.jpg' (230 KB)
Preview of image 'snapshot3.jpg'
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"Eero Ahonen" <aer### [at] removethiszbxtnetinvalid> wrote in message
news:4985880d@news.povray.org...
> St. wrote:
>>> http://www.normankoren.com/makingfineprints1A.html#gammachart
>>
>> Cool. Thanks, it says 2.2 or 1.8. I tried both of these in the
>> povray.ini file and it's still too dark.
>
> Use the test patterns provided on that page.
I downloaded QuickGamma but it doesn't seem to do anything if I change
the numbers. I'm obviously doing something wrong. :/
Neither my laptop nor my
> desktop's CRT have 1.8 or 2.2.
Hmm, ok, so what are your settings then? Higher?
~Steve~
>
> -Aero
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St. wrote:
>> Neither my laptop nor my
>> desktop's CRT have 1.8 or 2.2.
>
> Hmm, ok, so what are your settings then? Higher?
My laptop's is 1.6 and IIRC desktop CRT's even lower, but since my
workstation broke over a year ago, I can't remember for sure :P.
> ~Steve~
-Aero
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