Maxwell Render | Official public forum

Posted: **Wed May 30, 2007 2:05 pm**

(I made a reply to Toms emitter thread in the tutorials section but i'm posting it here as I need to figure this within thenext hour or so... please!)

Rendered for about 20 mins....

The logo within this glass ball needs to be white. I'm using a light plane at the front (clearly shown by the white reflection over the Z) to light the front of the logo so that it appears white (otherwise it only appears grey)... is there any way of lighting the front without a reflection appearing on the ball? I've tried all the methods above. Any suggestions would be helpful... i need to figure this out as soon as possible (I even tried making the front face an emitter but that gave some weird results).

Posted: **Wed May 30, 2007 2:18 pm**

didnt try 1.5 yet but, cant you just hide it for the cam?!

Posted: **Wed May 30, 2007 2:24 pm**

I'm not so sure this is possible, haven't tested yet but even if you hide the emitter from the camera it's still visible in reflections/refractions.

perhaps Tom got some good tips on this one.

/ Max

Posted: **Wed May 30, 2007 2:29 pm**

Yeah i tried hiding it from the camera etc - this is a bit of a nightmare. I thought it would be so easy, but i just cant get the logo to appear white without a strong front emitter. Tom please help!

Posted: **Wed May 30, 2007 2:31 pm**

What about make two layers, the first one the emitter and the second one lambertian with nd=1.

Posted: **Wed May 30, 2007 2:32 pm**

can't you just add an emitter material to the logo?

Posted: **Wed May 30, 2007 2:33 pm**

ok, jespi - you are thinking faster!

Posted: **Wed May 30, 2007 2:34 pm**

Will, under object properties, find "Hidden to Reflections/Refractions"

Posted: **Wed May 30, 2007 2:49 pm**

Great Tom

but does that apply to emitters ? i thought it was only for objects. If it works on emitters aswell it's very nice!

/ Max

Posted: **Wed May 30, 2007 2:49 pm**

Tom i tried that and it didnt work.

Posted: **Wed May 30, 2007 2:51 pm**

It works fine here, interesting. Can you share a simple scene with primitives you couldn't make it work?
Btw, you're not applying it to the glass ball but the emitter, right?

Posted: **Wed May 30, 2007 2:56 pm**

I'm unticking "Hidden to Reflections/Refractions" on the emitter plane thats causing that reflection - when i do that it just doesn't emit light.

Posted: **Wed May 30, 2007 3:02 pm**

Yes, same here too.

Posted: **Wed May 30, 2007 3:27 pm**

Unticking? No, you should tick it, not untick. It means "Studio, please make my emitter hidden to reflections/refractions"

Posted: **Wed May 30, 2007 3:30 pm**

one image can say more than 1000 words...

great!

Maxwell Render | Official public forum

Reflecting Emitter

Reflecting Emitter