4 color room with a twist

[EricCamper]

I see it now....You have a small sphere halfway in the ceiling and a light shining through the hole in the floor......The sphere has Red Green and Blue colors on each quarter and one quarter is white??? It looks like the ball is rotating like a disco ball.

EDIT: Sorry...that will teach me to leave my window open..Reform got to it before I did......

[Joost Ink]

the solid box has a tiny hole, so there is light (only skylight) coming trough.
the box has a rotating red, green, blue and grey tile map in the refractionslot, right?

[jacksc02]

ooooo I want to tell!!!!

[DaForce]

Well some innovative answers
And your all somewhat close. But re:FORM was the closest

Its purely caustics

Allow me to explain and post a diagram.
There is a direct light outside the box.. which is setup to purely cast caustics.. no diffuse light at all. This is the only light in the scene. It hit a small glass pane which activates the caustics which travel down the small passage bounce of the 45deg mirror travel along the bottom .. bounce of the other 45deg mirror and then up thru the little square hole in the floor.
The caustics then hit the sphere up the top and then are sprayed around the room lighting it up. Now the sphere itself i put 4 different reflective materials on.. to produce the colors
The sphere itself is actually not a full sphere only about a third or so.. as after that the angles of the faces just send the caustics straight onto the roof and not around. So i had to play with the size of the sphere and how much of it to slice off for it to be most effect it.

The dark ovals on the tops of the walls are because i had to make the sphere bigger to fix another issue with weird blotches.. with a little more time I could have sorted this.

Initially I had the whole in the floor alot bigger.. about the size of the outside of the caustics tunnel and therefore the sphere on the roof was alot bigger, but i wanted to make it more interesting so I shrunk it all down.

Oh and the sphere is rotated hence the moving colors.

An interesting side note, is the caustics map was around 1GB per frame and the caustics multiplyers on this render where REALLY high, 200 in the caustics rollout and 50 on the light itself.

I will be trying more interesting things this weekend i reckon, caustics are great fun.

[RErender]

that's pretty sweet, at first I thought it was just a cheap parlor trick :P

but the light on the ceiling was too cool for that.

[DaForce]

hahaha thanks... I think

[jow]

Cool! so its a sort of laser type thingy, wicked
Is it possible to make this light beam visible?

[DaForce]

No its not possibly by any conventional means.
I might be able to right something up tho.. dont really know how.. lol

I was thinking of doing a little particle animation, to show how the caustics were working.. thought that would be kinda funky for people to watch who didnt understand caustics all that well.

[DaForce]

For those of you who are interested here is the first render with the bigger hole and bigger sphere.

DOWNLOAD HERE

[jow]

Cool thanks for sharing the info dude
Wouldn't mind seeing what the particle animation would come out like...

No its not possibly by any conventional means.
I might be able to right something up tho.. dont really know how.. lol

You'll think of something, would be cool to see

[DaForce]

Yeah might to the particle animation on the weekend

Hmmm volumetric particles hey..... would have to be an impressive fake.. lol

[jow]

Yeah do it! you know want to

[studioDIM]

even better: be a pal and share the scene, and let's all try and make those caustics visible
First gets a ticket to the final of the WorldCup from you...

(another notch of off-topic BS up. good on me! )

Lele

[DaForce]

Unfortunately its not possible... volumetrics will only be show up to the first mirror... then nada

Other than faking it on post.. it cant be done.. until Vlado codes it in

However maybe something with particles might work. *shrugs*

[RErender]

actually there is a way, I have had very limited results with filling a space with a atmosphere of particles to represent dust or moisture in the air to give the caustics something to bounce off of :P