How to make Spot lights in Octane?

[Camille]

Hi everyone!

I'm just learning how to use Octane. I'm studying the manual and have a question I don't see covered.
In programs I've been using like After Effects, poser, daz, they have lights you can set for your scene and position them where you want them to be, as well as set cone angle, fall off, etc.
My question is: How do I make spot lights in Octane? How does one make spotlights like for stages etc?

I saw someone in a forum suggested to import a flat circle obj and assign to it a diffuse material and use it as an emitter.
So i made a flat circle in photoshop, extruded with the 3d feature and exported it as an obj.
I'm using the chess demo scene from Octane to learn how to use this program.
So i imported this flat circle, made it a black body emitter, but now what?
How do I use it as a spotlight?
It doesn't interact with my chess scene, I can't seem to connect it into that scene.

https://www.dropbox.com/s/f62ccvrja3589 ... M.png?dl=0

How do I get it into the chess scene and make it behave like a spotlight?
How can I control how wide the beam is, how far it goes, etc, like with lights in poser/AE/daz?

Thank you
Camille

[dionysiusmarquis]

Like this?:

http://render.otoy.com/forum/viewtopic. ... 3&p=177186

You need a circle as emitter and an attached cone. The circle size will adjust the falloff.

[Camille]

Like this?:

http://render.otoy.com/forum/viewtopic. ... 3&p=177186

You need a circle as emitter and an attached cone. The circle size will adjust the falloff.

Yeeeeeess!! Thank you so much, I didn't see this post biefore, that's it! The solution I need.
Many thanks!

[Vue2Octane]

I was looking in the link:
Is the volumetric material in the node editor in the screenshot available on LiveDB?
I thought Octane Standalone does not suppport volumetric materials...

[Camille]

Like this?:

http://render.otoy.com/forum/viewtopic. ... 3&p=177186

You need a circle as emitter and an attached cone. The circle size will adjust the falloff.

Hmm, looks like a great solution, but how do you get it to work with your existing scene?
I'm experimenting using the sample chess scene that Octane gives out, but don't know how to connect the imported (right click -geometry-mesh) light emitting sphere to the chess scene. It only renders either the chess scene or the sphere.
(I'm just learning to use this software so forgive my ignorance).


Camille

[Rikk The Gaijin]

If you want to render multiple obj files at the same time, you need to add a Geometry Group node, and plug your obj files to it.

[BorisGoreta]

You could also use any light type with IES applied to it, this way you don't need to model any cones.