Indigo Renderer Forum

K, im new at this indigo thing and i have done the tutorials. But i thought a diffuse transmitter was to make a light. i rendered a little test and nothing!

How do i make a light? Any suggestions?

Hi Laurie and welcome to the forum! ;o)

I think there is a lil bit confusion on your side. A transmitter is not an
emitter, and thats exactly what you need - an emitter. I dunno
Skindigo but there should be something like an emitter shader, no?

I hope this will lead you the right way till a SketchUp user will
answer this post!



take care
psor

It's confusing... to transmit in terms of light means to allow it to pass through.

I'm not entirely sure why radio transmitters are called that... should they really be called radio emitters? The air/atmosphere is the transmitter.

@dougal

I would say because there is a difference between "transmission"
and "emission". You can find the meaning on etymonline.com.
A good site for such questions about the roots of a word and their
meaning ...



take care
psor

Laurie wrote:K, im new at this indigo thing and i have done the tutorials. But i thought a diffuse transmitter was to make a light. i rendered a little test and nothing!

How do i make a light? Any suggestions?

Hi Laurie, I saw in another post that you are using the newest version 1.0.5.

When you open the material editor, there is a drop down beneath the preview window, click the drop down next to "Type" and you'll see RGB light and Blackbody light, among other things. (click Switch UI if you don't see it)
Those are the emitters. You can also click the Assign Preset and toward the bottom there are preset lights. The diffuse transmitter is used for things like lampshades, etc. Basically any material you set to diffuse, and then give some transparency to, becomes a diffuse transmitter.

Hope this helps!

dougal2 wrote: I'm not entirely sure why radio transmitters are called that... should they really be called radio emitters? The air/atmosphere is the transmitter.

Makes sense to me....it's the studio equipment which emits the signal/waveforms - the transmitters just carry the signal from electricity over to electromagnetic waves. The air isn't really transmitting anything...?

Laurie wrote:K, im new at this indigo thing and i have done the tutorials. But i thought a diffuse transmitter was to make a light. i rendered a little test and nothing!

How do i make a light? Any suggestions?

If you REALLY did do the SkIndigo tutorials, you should know this. Just change the material type to a LIGHT

If the air doesn't transmit anything, how do the signals go through the air?

@Kram

How does a satellite send data to a station on earth? Through air?!



take care
psor

through vacuum (nearly)
then through several "spheres"
and finally through air, yes.

It's an electromagnetic wave, right? Those don't need any medium...

"It's an electromagnetic wave, right? Those don't need any medium..."

That was my point!

"If the air doesn't transmit anything, how do the signals go through the air?"

And that was the point that was make me thinking ... but I guess it was
more a rhetorical question ...



take care
psor

I see...
Well, I meant it the other way round, kinda
You know, the wave still can be blocked (or at least made too weak to detect), although it has no known medium.
If Air would be such a (too strong) blocker, what would be the use of any radio waves?

hey whaat,

I did do the tutorials, even a second time to check, and the only light instructions are under 'advanced lighting' and is regarding HDRI light and sketchup background colours to emmit light ect. perhaps im missing something, and perhaps i didn't quite get that part of the tutorial, but i still cant get it right.
I then tried just opening the material editor, and i cant find were i simply change the material to a light?

The frustrating thing is, once im told how, im sure it will have been an obvious oversite as these things can tend to be, and ill look like a turkey for waisting all of your time.

thanks guys.

Do it like this:

1st paint a color on a face in sketchup.
Go to the Sketchup materials pallet/click on teh litte home button to show onyl the materials that are in the model, and double-click on the color that you just applied to that face.
The Skindigo material editor should pop up-than see my post above.
That is where you assign all the stuff for Indigo.
The earlier version of Skindigo that the tut is based on did not have this Material Editor GUI.


maybe just try it in a brand new sketchup model with just a box and a couple materials.
You also need to set the skindigo settings to sketchup background color and click the black checkbox, that simulates night and lets the lights show up.

hey crojack

Thanks alot, gave it a bash and it works. really do appreciate your help.

Ta.