![](/i/fill.gif) |
![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Hello,
Still messing around with the simulated translucency, trying out making a
lampshade. Here's a scene I put around it. Ironically I found that at this
scale the shades smaller details aren't really visible. Regardless, as a WIP I
thought I'd share.
-The Mildly Infamous Blue Herring
Post a reply to this message
Attachments:
Download 'lamp_and_mirror_1.png' (402 KB)
Preview of image 'lamp_and_mirror_1.png'
![lamp_and_mirror_1.png](/povray.binaries.images/attachment/%3Cweb.47d1a63f5bfaf533ce5ce3790%40news.povray.org%3E/lamp_and_mirror_1.png?ttop=443866&toff=3350&preview=1)
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Blue Herring" <bhe### [at] tinfoilcat com> wrote:
> Hello,
> Still messing around with the simulated translucency, trying out making a
> lampshade. Here's a scene I put around it. Ironically I found that at this
> scale the shades smaller details aren't really visible. Regardless, as a WIP I
> thought I'd share.
>
> -The Mildly Infamous Blue Herring
Looks good. What method are you using?
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
I think the shade is looking good. I am however, troubled by the focal blur
(?) which made me wonder if something was wrong with my eyes. I have trouble
to see the scene, with the exception of the lamp.
Thomas
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Thomas de Groot schrieb:
> I think the shade is looking good. I am however, troubled by the focal blur
> (?) which made me wonder if something was wrong with my eyes. I have trouble
> to see the scene, with the exception of the lamp.
>
> Thomas
>
>
No trouble at all here. Must be something with your eyes.
;-)
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Hans Fink" <mas### [at] pecos no spam de> schreef in bericht
news:47d53780$1@news.povray.org...
>>
> No trouble at all here. Must be something with your eyes.
>
> ;-)
Yes, I forgot my POV-glasses..... :-)
Thomas
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Kirk Andrews" <kir### [at] tektonart com> wrote:
> Looks good. What method are you using?
Thanks. It uses double illuminate and an area light + radiosity, with patterns
of varying ambient finish on the shade. Nothing too different than my prior
lights really.
-The Mildly Infamous Blue Herring
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> I think the shade is looking good. I am however, troubled by the focal blur
> (?) which made me wonder if something was wrong with my eyes. I have trouble
> to see the scene, with the exception of the lamp.
Thanks. Perhaps I was too aggressive with the blur, I don't use it all that
often. Or possibly its the scale of the scene, its at 1cm = 1 pov unit. It
uses the standard POV-Ray focal blur:
#declare Focus = <-30, 120, 170>;
camera {
location <-50, 150, -50>
up y
right x * image_width/image_height
look_at Focus
#if(Use_Focal_Blur)
aperture 9
blur_samples 400
focal_point Focus
confidence 0.91
variance 1/2000
#end
}
Part of the reason for the rather high settings was that I was trying to get rid
of that graininess on the mirror border, which it largely failed to do.
-The Mildly Infamous Blue Herring
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Blue Herring" <bhe### [at] tinfoilcat com> schreef in bericht
news:web.47d584cd76857e91ce5ce3790@news.povray.org...
>
> Part of the reason for the rather high settings was that I was trying to
> get rid
> of that graininess on the mirror border, which it largely failed to do.
>
Maybe that would disappear with (higher) radiosity settings? Instead of
focal blur.
Thomas
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
"Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
> Maybe that would disappear with (higher) radiosity settings? Instead of
> focal blur.
Hmm, not sure, I thought I had fairly high settings, but perhaps I'm off
somewhere. I'm using the two-pass method with the settings:
pretrace_start 0.32
pretrace_end 0.02
count 400
nearest_count 5
error_bound 1
recursion_limit 3
low_error_factor 0.5
gray_threshold 0
minimum_reuse 0.015
brightness 1
adc_bailout 0.01/0.4
normal off
media off
-The Mildly Infamous Blue Herring
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
Blue Herring nous apporta ses lumieres en ce 2008/03/14 14:26:
> "Thomas de Groot" <t.d### [at] inter nlDOTnet> wrote:
>> Maybe that would disappear with (higher) radiosity settings? Instead of
>> focal blur.
>
> Hmm, not sure, I thought I had fairly high settings, but perhaps I'm off
> somewhere. I'm using the two-pass method with the settings:
>
> pretrace_start 0.32
Changing the pretrace_start usualy have little to no effect. Keep the default of
0.08.
Changing by some small value may, in some cases, get rid of some artefacts near
corners.
> pretrace_end 0.02
Default value.
Try reducint this to 0.01, 0.005 or 0.0025
> count 400
Maybe a larger value here? Try 600 or 800.
> nearest_count 5
That's the default value.
You can go up to 20. Low effect on render time, can greatly improve end result.
> error_bound 1
> recursion_limit 3
Default value.
> low_error_factor 0.5
Meybe try a somewhat smaller value. Will take more time on the final pretrace step.
> gray_threshold 0
Default value.
> minimum_reuse 0.015
Default value.
You may need a value larger OR smaler. Don't go over 0.02. Don't go to small, as
smaller values will increase the render time.
> brightness 1
Default value.
> adc_bailout 0.01/0.4
That's 0.025, probably to large. Try adc_bailout 0.01/3 or 0.01/4.
> normal off
Default value.
> media off
Default value.
>
> -The Mildly Infamous Blue Herring
>
Every time you use a default value, you can skip that option.
--
Alain
-------------------------------------------------
Keep your boss’s boss off your boss’s back.
Post a reply to this message
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |
| ![](/i/fill.gif) |
|
![](/i/fill.gif) |
|
![](/i/fill.gif) |
| ![](/i/fill.gif) |