OTOY Forums

Hi, how can I create godrays above and through the city?

Whats the best and fastest solution?

Thanks!

Freddy

The fastest, simplest way, in my opinion, is with a gobo object, set to cast shadows and be invisible to camera. Stick that in front of a Octane Daylight with a Fog Medium. Yes, you can do it with a texture applied to and projected from the light source, but I find a physical object in 3D space a much more intuitive approach for things like god rays and faking caustics in water.

The gobo object can be a simple plane with an opacity texture map, or you can play with something like a Scatter object.

face_off talks about the other method over here: viewtopic.php?f=34&t=61269&p=313435&hilit=gobo#p313435

Of course, the gobo god rays will still work just fine with your shadow casting city skyscrapers, too.

Thanks I will give it a try!!!!

Cheers Freddy

frankmci wrote:The fastest, simplest way, in my opinion, is with a gobo object, set to cast shadows and be invisible to camera. Stick that in front of a Octane Daylight with a Fog Medium. Yes, you can do it with a texture applied to and projected from the light source, but I find a physical object in 3D space a much more intuitive approach for things like god rays and faking caustics in water.

The gobo object can be a simple plane with an opacity texture map, or you can play with something like a Scatter object.

face_off talks about the other method over here: viewtopic.php?f=34&t=61269&p=313435&hilit=gobo#p313435

Of course, the gobo god rays will still work just fine with your shadow casting city skyscrapers, too.

sorry I forgot 1 thing, is this also possible with only the sun, environment Daylight?

sjonsjine wrote: sorry I forgot 1 thing, is this also possible with only the sun, environment Daylight?

If I understand what you are asking, it should work fine with any Octane light object as long as it has the Daylight tag, which you can add from the Tags menu. The Daylight tag gives you the Volumetric Medium attribute. It will also work with non-Daylight lights, if you use it in conjunction with a Volume object. In some situations, that can be more intuitive, seeing the actual boundaries of the volumetric effects you are rendering.

Volumectrics in general are a whole other can of worms, if your question is that broad.

frankmci wrote:

sjonsjine wrote: sorry I forgot 1 thing, is this also possible with only the sun, environment Daylight?

If I understand what you are asking, it should work fine with any Octane light object as long as it has the Daylight tag, which you can add from the Tags menu. The Daylight tag gives you the Volumetric Medium attribute. It will also work with non-Daylight lights, if you use it in conjunction with a Volume object. In some situations, that can be more intuitive, seeing the actual boundaries of the volumetric effects you are rendering.

Volumectrics in general are a whole other can of worms, if your question is that broad.

Wohow, I am losing it Frank

Can I tag the Daylight? Tags menu? Where can I find this?
Working in Lightwave, maybe what you mean is part of the standalone?

What are the step to take then?

Thanks 1000x Frank,

Freddy

sjonsjine wrote:

frankmci wrote:

sjonsjine wrote: sorry I forgot 1 thing, is this also possible with only the sun, environment Daylight?

If I understand what you are asking, it should work fine with any Octane light object as long as it has the Daylight tag, which you can add from the Tags menu. The Daylight tag gives you the Volumetric Medium attribute. It will also work with non-Daylight lights, if you use it in conjunction with a Volume object. In some situations, that can be more intuitive, seeing the actual boundaries of the volumetric effects you are rendering.

Volumectrics in general are a whole other can of worms, if your question is that broad.

Wohow, I am losing it Frank

Can I tag the Daylight? Tags menu? Where can I find this?
Working in Lightwave, maybe what you mean is part of the standalone?

What are the step to take then?


Thanks 1000x Frank,

Freddy

> LW Node Editor for Octane > Octane Render Target > Environment DayLight >

snip lwguru

If I understand what you are asking, it should work fine with any Octane light object as long as it has the Daylight tag, which you can add from the Tags menu. The Daylight tag gives you the Volumetric Medium attribute. It will also work with non-Daylight lights, if you use it in conjunction with a Volume object. In some situations, that can be more intuitive, seeing the actual boundaries of the volumetric effects you are rendering.

Please give me some screenshot because I really can't find this, don't see how to do this, sorry can you please help me again?

Thanks!

Freddy

LightwaveGuru wrote: > LW Node Editor for Octane > Octane Render Target > Environment DayLight >

snip lwguru

Thanks, LWGURU. I was trying to stay general, but didn't take variations in plugins into account!

Hope that did the trick, Freddy.

- Frank

OMG! I really don't get it....

What I understand is, that I have to use an octane light and if I tag this light as a sunlight then I can use the sunlight environment settings, and
because I have a visible light in layout, I can add an obo object in front to simulate godrays...

Can someone please be more specific? Screengrabs??

Thanks again all!!!!!!


Freddy