Look it's the sun!!

crojack · Post by **crojack** » Thu Feb 19, 2009 11:46 am

Sketchup really has one.

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

first is without Aperture Diff, second is with.

Vidy · Post by **Vidy** » Thu Feb 19, 2009 5:23 pm

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

Pibuz · Post by **Pibuz** » Thu Feb 19, 2009 8:24 pm

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?

crojack · Post by **crojack** » Fri Feb 20, 2009 4:13 am

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.

neo0. · Post by **neo0.** » Fri Feb 20, 2009 6:28 am

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..

pixie · Post by **pixie** » Fri Feb 20, 2009 11:02 am

Sun at noon has different power then it has a sunset...

CTZn · Post by **CTZn** » Fri Feb 20, 2009 12:05 pm

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 !

crojack · Post by **crojack** » Fri Feb 20, 2009 12:21 pm

ack, I messed up, the first pic does not have ap-diff. I will edit the original post.

Zom-B · Post by **Zom-B** » Fri Feb 20, 2009 4:59 pm

afaik the halo could be a result of the MN Splat filter... a quick gausian test could proof if I'm wrong

Vidy · Post by **Vidy** » Fri Feb 20, 2009 6:36 pm

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?

thanks,
vidy

CTZn · Post by **CTZn** » Sat Feb 21, 2009 4:12 am

Vidy: a smaller aperture radius while using diffraction. It's noted above

neo0. · Post by **neo0.** » Sat Feb 21, 2009 8:26 am

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?

crojack · Post by **crojack** » Sat Feb 21, 2009 9:22 am

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?

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

neo0. · Post by **neo0.** » Sat Feb 21, 2009 4:48 pm

Hehe, whoops sorry. It was hidden in the shadows menu. Hehe. I just wasn't aware than skindigo tapped into SUs settings this much.

Kram1032 · Post by **Kram1032** » Sat Feb 21, 2009 10:35 pm

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)

Look it's the sun!!

Look it's the sun!!

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