Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Feature Requests => [Max] Resolved Feature Requests => Topic started by: Br0nto on 2018-08-29, 21:25:32

Title: True Sunsets
Post by: Br0nto on 2018-08-29, 21:25:32
I would like to suggest some mechanic for true sunsets. As per this thread (https://forum.corona-renderer.com/index.php?topic=20792) I'm under the impression that the current simulation does not support the sun being below the horizon. But as a result, there's no ability to make a true sunset. The Corona sky remains lit and the sun is still visible (https://i.imgur.com/RevaHQd.jpg), whereas it would be ideal if there were some way to have the sun dip below the horizon and the Corona sky fade to black. Maybe an extra 5 degrees of angle below the horizon?

Or, alternatively, allow regular lights to affect the Corona sky shader/setup so that you could fake a sun that can go wherever it wants.
Title: Re: True Sunsets
Post by: houska on 2018-08-30, 12:48:21
Hi! This would be a Corona Core request... I'll move this to the correct section
Title: Re: True Sunsets
Post by: Br0nto on 2018-08-30, 15:47:01
Thanks!
Title: Re: True Sunsets
Post by: burnin on 2018-08-31, 01:48:36
feature suggestion... https://forum.corona-renderer.com/index.php?topic=21186.msg133077#msg133077 (https://forum.corona-renderer.com/index.php?topic=21186.msg133077#msg133077)
Title: Re: True Sunsets
Post by: alexyork on 2018-08-31, 11:04:00
+1 on this. We've been working up some images lately where absolute second-to-second sun timing is critical to the view working. We've noticed that the sun just doesn't behave how you'd expect at extreme low-to-horizon altitudes, and this is probably the reason why.

In addition, I think there is an issue with CoronaSun being severely under-powered when very low on the horizon. I can't post any examples due to NDA but it's fairly easy to test this - just load up a city model and corona daylight system in there, and get the sun only just barely poking up above the horizon. You'll find that it's very very low-strength until really quite high. In order to get anything strong enough you end up needing to boost the multi to 2 or more.

Think this model could do with a look. And the age-old request for a 24-hour daylight system still remains... Imagine if we could have a proper, realistic 24-hour corona lighting system that reacts realistically at all times of day including super early/late plus proper transition to blue hour, night, moon light controls........
Title: Re: True Sunsets
Post by: Jpjapers on 2018-08-31, 16:34:18
+1 on this. We've been working up some images lately where absolute second-to-second sun timing is critical to the view working. We've noticed that the sun just doesn't behave how you'd expect at extreme low-to-horizon altitudes, and this is probably the reason why.

In addition, I think there is an issue with CoronaSun being severely under-powered when very low on the horizon. I can't post any examples due to NDA but it's fairly easy to test this - just load up a city model and corona daylight system in there, and get the sun only just barely poking up above the horizon. You'll find that it's very very low-strength until really quite high. In order to get anything strong enough you end up needing to boost the multi to 2 or more.

Think this model could do with a look. And the age-old request for a 24-hour daylight system still remains... Imagine if we could have a proper, realistic 24-hour corona lighting system that reacts realistically at all times of day including super early/late plus proper transition to blue hour, night, moon light controls........

Moonlight controls would be an absolute dream. +1 for 24hr daylight system.
Title: Re: True Sunsets
Post by: Br0nto on 2018-08-31, 16:57:41
I hadn't raised my ambitions to a full 24-hour daylight system, but that would be fantastic. Especially having moon and star controls.
Title: Re: True Sunsets
Post by: Ondra on 2022-01-14, 20:30:14
done