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Look it's the sun!!

Posted: Thu Feb 19, 2009 11:46 am
by crojack
Sketchup really has one. :lol:

I guess I never thought there was actually a point/dot/thing.

first is without Aperture Diff, second is with.

Posted: Thu Feb 19, 2009 5:23 pm
by Vidy
dear crojack, its really awesome, could you tell us how to do that? is it just change the shadow slider or there's another trick? thanks a lot

regards,
vidy

Posted: Thu Feb 19, 2009 8:24 pm
by Pibuz
Hi Cro!
..interesting!
I always wanted to test aperture diffraction, but when I enable it I always get fireflies or shiny dots :?
How did you do it?

Posted: Fri Feb 20, 2009 4:13 am
by crojack
I messed up first is without aperture diffraction
second is with. pic names are correct.

anyways, I was wondering if I could get a nice evening/warm/dusk type sun from just sketchup. Because, in skp it just gets darker.

In other renders created in Blender or whatever, I think you can set parameters for the sun and I've seen the sun in them, so I was jsut wondering if this was possible with skp.

I just aimed the camera due West, North is Green axis and hit render and adjusted until I saw the sun. Weird that it has that black ring around it, but it is kind of a nice sky.

Not sure about the fireflies and all, there are no materials in my scene except the default skp mat. I just rendered for awhile and saved the pic without apdiff on and than turned it on and that's it above.

I think a nice sunset is next.

`

Posted: Fri Feb 20, 2009 6:28 am
by neo0.
Reminds me.. It would be neat to be able to control the brightness of the sun.. Maybe by changing the time of day or something..

Posted: Fri Feb 20, 2009 11:02 am
by pixie
Sun at noon has different power then it has a sunset... ;)

Posted: Fri Feb 20, 2009 12:05 pm
by CTZn
The black ringing maybe Pibuz can explain a bit now :)

As far as I know camera diffraction works with f-stop, smaller apertures (higher fstop) tend to generate a wider halo, and also more vignetting. If the f-stop value is not too strong then camera diffaction computes faster... well, it's spread will be tighter.

I hope I reminded well !

Posted: Fri Feb 20, 2009 12:21 pm
by crojack
ack, I messed up, the first pic does not have ap-diff. I will edit the original post.

Posted: Fri Feb 20, 2009 4:59 pm
by Zom-B
afaik the halo could be a result of the MN Splat filter... a quick gausian test could proof if I'm wrong :)

Posted: Fri Feb 20, 2009 6:36 pm
by Vidy
2 crojack, yup its work, i never know this fact
is that any way to change the sun size? i mean make the sun appearance bigger? :D

thanks,
vidy

Posted: Sat Feb 21, 2009 4:12 am
by CTZn
Vidy: a smaller aperture radius while using diffraction. It's noted above :)

Posted: Sat Feb 21, 2009 8:26 am
by neo0.
pixie wrote:Sun at noon has different power then it has a sunset... ;)
Yeah, this was what I was trying to get at. What if you could control the time of day?

Posted: Sat Feb 21, 2009 9:22 am
by crojack
neo0. wrote:
pixie wrote:Sun at noon has different power then it has a sunset... ;)
Yeah, this was what I was trying to get at. What if you could control the time of day?

:roll: :roll:


Please PLEASE learn something before you post!! Obviously you don't even know the absolute basics of Sketchup.

Posted: Sat Feb 21, 2009 4:48 pm
by neo0.
Hehe, whoops sorry. It was hidden in the shadows menu. Hehe. I just wasn't aware than skindigo tapped into SUs settings this much. :D

Posted: Sat Feb 21, 2009 10:35 pm
by Kram1032
If you're talking about the black outline: That's a VERY old one!
I did those multiple times. If the posts aren't lost in one of the site-shutdowns, you'll see such pics by me too ;)
(also some with extreme turbidity-values (20), resulting in a green (O.o) sky, which though isn't a bug-. as realistic values are in the range between 2 and 6 or something)