"sun set clouds" sunset ?

[myriac]

what did i do ?  why are those clouds behind the sun  when render completed i was surprised by this situation.

can anyone help ?

[Will]

No thoughs clouds are infront of the sun and it is shining though them. you could try increasing the density.


Regards,

Will

[myriac]

thx will , i'll try 

[Oshyan]

This is something I've seen a few times in other people's renders but haven't really duplicated myself. If you can share the .tgd file it would help a lot in determining if this is actually a bug, or just "incorrect" settings.

- Oshyan

[Will]

Oshyan he has already

Regards,

Will

[myriac]

actually oshyan, i increased both depth & density of clouds. no much use  !
on the other hand these clouds enough for the scene and i need to use them as they are not to disturb my scene.
if u examine tgd file u will see no unusual parameters or you tell me .
so in my opinion clouds enough to cover sun.
maybe it could be a bug.

[Dark Fire]

There is a small bug where the sun shines through things that it shouldn't. There is a link to an animation somewhere on these forums in which the sun shines through mountains.

[Oshyan]

The "sun shining through things" bug applies only to the terrain. The fix there is to enable Raytraced Shadows in the Atmosphere Quality tab. In this case it has no effect.

In this case I believe the problem is caused by a known issue with the rendering of the "visible disc" in the sun settings. Currently this feature is implemented in a fairly simplistic way which doesn't always render visibly correct. This will certainly be improved in the future.

- Oshyan

[Dark Fire]

I encountered an error a while ago that may be related: the visible disc of the sun appeared to turn a circle of my terrain and objects, directly underneath, purple.

[icarus51]

Hello,
A question: the sun at sunset/sunrise should be deformedby atmosphere when it grazes the horizon, isn't true?
Is it possibile to render this effect?
Thanks.

Claudio

[§ardine]

A question: the sun at sunset/sunrise should be deformedby atmosphere when it grazes the horizon, isn't true?

Are you referring to the effect caused by heat being dissipated from the surface into the atmosphere causing the lower edge of the sun to flare slightly outward as it dips below the surface?

Is it possibile to render this effect?

I don't think so. But an idea I had, that might be worth trying, is to add a second atmosphere to your planet with a very low ceiling. I'm not sure if this is possible though as I'm rendering at the moment. but it might be worth a try.   

[Oshyan]

Distortion at the horizon is not currently supported but may be added in the future.

- Oshyan

[Cyber-Angel]

I can think of a whole host of atmospheric phenomena that should be supported by Terragen that are not right now all of which can be found on this site:

http://www.weather-photography.com/gallery.php?cat=optics

Since Terragen has ray tracing it should be fairly easy to implement many of these phenomena I would think.

I think the phenomena under discussion here is distortion: as seen here:

http://www.weather-photography.com/album.php?cat=optics&subcat=distortion

This would be vary nice if in the future Terragen could have this.

Regards to you.

Cyber-Angel

[old_blaggard]

@myriac: Try disabling the visible disk in the sunlight node and instead pumping up its glow strength in the atmosphere.