help with brazil please...

[ZeBoxx]

Heya,

Erm - Get rid of what, exactly ?

That looks about right to me...

If a bright light is shining out of an object with holes punched into it, they will cast all that light in the pattern of the holes onto whatever surrounding there is.

If I'm missing what's wrong - write ;)

Best regards,
Richard Annema

[AshodT]

hey thanks for replying.
ok,i did a new render.i dont have that things on the walls now.but still,im not here i want to be. i thought i could get something like theres only light coming out from the holes,but thats not the impression i get here.
any idea how to get the feel i described?

[TMortan]

Look under Volume Light in Max’s help menu. I believe that’s what your looking for.

[AshodT]

well i tried that already,but its not calculating objects,and is passing trough everything,making the image bright everywhere and unreallistic.:hmm:

[AshodT]

i just noticed that i got that bad lighting effect by getting shadows off. with on,its still the same....im getting crazy with this stuff...anybody has some trick?

[MFreywald]

Your still being a bit vague on what exactly your trying to do. It sounds like exactly what TMortan suggested. Might help to post a link to your scene file and maybe someone here can take a look. I'll be willing to take a look at it if I get it before you fix the problem yourself.

[AshodT]

there won't be any link to the scene.im not allowed to do that (the scene belongs to the guys i work for...).
the probleme is the traces of light i get on the objects surrounding the lamps.its really not natural,and this is called gi...
im gonna give a try at lightracer and radiosity from max5 built in.ill post my results,but i really doubt ill get something better then the famous brazil rendering system.

thanks for the replys anyway guys.

[TMortan]

Yes MFreywal is right from what you’ve shown us and said it’s hard to diagnose the problem.

If you were to give the settings you used for everything and maybe post a close up of one the lamps and the arrangement of lights in them we might be able to correct the problem.

[JeffPatton]

Not sure if this will help or if your doing it already....but are you using the "brazil" lights in the scene or regular max lights? Don't be offended by my simple question, just trying to help and I dont recall you stating what type of lights you were using, just that you enabled GI. :)

[JeffPatton]

DOH...very first post you stated brazil omni light...NEVERMIND. I should read more closely, or just not post at 1:00 in the morning.

[AshodT]

LOL folical9.yeah,typing at 1 am really gets messy..
so,heres a close up shot of the lamp and traces of light on the wall.its logical to have traces,but damn,this is too much...maybe area lights and area shadows could save me,but brazil hasent got area omni lights,and with the built in area shadows from max,its really not getting there.its not even giving the impression the light is coming from a lampe.
here are 2 renders:
1st is brazil shadows.
2nd is area shadows from max.
(note that theres the same amount of light in the two pics.)
i guess what im looking for is to get that traces on the wall softer...is that called soft shadows??anyway to do that with brazil?

[AshodT]

2nds render:

[MFreywald]

hmm..so you want the light to shine from inside the lamp, outside onto the walls with a soft falloff? Is that correct? If so you might just try setting the light(s) inside the lamp pointing out the holes with a low hotspot and high falloff, possibly even using attenuation to clamp some of the light. I put light(s) cause you might need one for each hole and just set the multiplier low on each to keep from washing out the scene. Off the top of my head this is all that comes to mind at the momment.

[ZeBoxx]

Erm...

Well you -could- try placing 6 arealights in a box-like fashion until :
- spherical lights are added
- different shadow types are added

Or you could add stick an opacity-mapping series of objects in those holes, with a fading falloff around the edges, and set those to cast shadows only (i.e. not show up in the render).
That should give you more soft-edged shadows.

Best regards,
Richard Annema

[AshodT]

hey thanks for the replys guys.
I think MFreywald idea was pretty cool,and i tried it.
result was not bad,but light was missing in the lamp now.so,i added an omni light there with attenuation near and far surrounding only the head of the lamp.
now it looks much better then early test,thanks to you guys.
only shadows on the floor are sharp,but that'll pass i guess.

enough talk,here we go!

[MFreywald]

Looking much better. Is this being done with GI? My thought would be that it should diffuse the hard shadows a bit, but being inside the lamps I could see how this might end up with the hard shadows on the floor we're seeing. Possibly a plane hanging slightly lower than the ceiling pointing down with a self-illumination might soften em up some.

[AshodT]

heres a render of the scene.so many shadows...

MFreywald,i didnt really get your last trick to loose the strong shadows?

[MFreywald]

ok..I was a bit vague so here goes..

make a plane and make sure the facing side is facing down. You can tell cause one side you cant see when it's facing you and the other side you can see. Apply a self-illuminating material to it turn the send GI on but you can turn off the recieve GI since its washed out by the self-illumination anyway. In properties turn off the visible to camera so it doesn't show in the rendering but still adds it's lighting to the scene. Also turn off casts shadows or you might get some shadowing on the ceiling. Plus since your using to wash out some of the shadowing you probably wouldn't want it generating even more shadows.

Hope this clarify's a bit what I meant.

[3dsmax5]

Why don't you use self-illuminated geometry as lights? Dunno if thats possible with brazil but I have done it lots in finalRender.

[MFreywald]

Same here 3dsmax5, Which is why I suggested using the plane to help out softening up the shadows some.

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