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food for thought-Not so-straight forward lighting
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food for thought-Not so-straight forward lighting // Roundtable
Post by Weevil // Apr 7, 2009, 12:29pm
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Weevil
Total Posts: 534
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Food for thought here
A mirrorball (disco ball) reflects light shining at it and bounces that back all over the walls and floor, like we all know they do. But how will we be able to emulate that in truespace?
I know truespace can't do advanced light computing like that as when I tried placing a white light behind a "gel" the light still came out white...so what would be the best way to emulate such an effect? And even more so how would I be able to emulate this effect if there is only one light source on one side of the mirrorball?
Will it have something to do with volumetrics? and do you think there's also a way to use "gels" instead of actual lights? |
Post by prodigy // Apr 7, 2009, 12:55pm
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prodigy
Total Posts: 3029
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If you own vray, you can doit with caustics..
that's how i doit for my CGSphere entry long time ago..
(BTW, Wizard made a very similar scene with a banana.. even he call it "let's dance" as i do.. huge coincidence... :p )
With lightworks.. you can do with some projector lights..
use a texture like this one and that's all..
http://www.118fabrics.com/shop/images/BLACK&WHITE%20004.jpg |
Post by prodigy // Apr 7, 2009, 12:56pm
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prodigy
Total Posts: 3029
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Ha remember use faceted faces on your sphere.. that will do the trick for the mirror ball.. |
Post by prodigy // Apr 7, 2009, 1:00pm
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prodigy
Total Posts: 3029
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hahh i found it.. CGSphere has deleted all 2006 entries.. :( even deleted Truespace from the search list..
My entry
http://forums1.caligari.com/truespace/showpost.php?p=21099&postcount=34
Whole Thread about CGSphere
http://forums1.caligari.com/truespace/showthread.php?t=1659&page=4
HEY THIS WAS MY 3000 POST!!!! HAPPY BIRTH DAY TO MEEE!! jajajajajaja |
Post by Jack Edwards // Apr 7, 2009, 1:31pm
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Jack Edwards
Total Posts: 4062
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Hey congrats Prodigy! :D
YafaRay should also be able to do this. You'll need to use the smooth shading settings on the "Misc" tab of the YafaRay4tS panel and apply those to the object to get it to render faceted. And don't forget to use a high number of photons in the caustics settings -- 3 million or so should be ok. |
Post by RAYMAN // Apr 7, 2009, 1:51pm
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RAYMAN
Total Posts: 1496
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A good reason to also try out Kerkythea because it does volumetric lighting and shows the beam and the lighting coming from the ball pretty well.
you can also use dispersion heres the file with the room that I made forf you and a discoball that I made for you to test. note only photon mapping works with volumetrics so use only photo map presets...:) |
Post by Jack Edwards // Apr 7, 2009, 1:54pm
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Jack Edwards
Total Posts: 4062
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Yeah, Peter's right on this one. While you should be able to get good results from both VRay and YafaRay. Kerkythea will probably produce the best results for this kind of situation. :) |
Post by RAYMAN // Apr 7, 2009, 2:35pm
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RAYMAN
Total Posts: 1496
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Here i added a synthesislayer to the discoball material.....
Kerky has so many options ! Looking foreward to the exporter Jack ! |
Post by spacekdet // Apr 7, 2009, 2:50pm
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spacekdet
Total Posts: 1360
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As a side note, you're completely able to produce a light 'gel' effect right out of the box using tS and the Lightworks renderer.
A couple things have to happen first:
The light should have transparent, not solid shadows.
19366
The material used for the 'gel' should use transmission, not transparency.
19365
Here I've switched on volumetrics to make the light beam visible, but volumetrics are not required.
They do help add to the smoky dance floor ambiance, however.
19362
If you want to examine this scene in more detail, here it is as well.
Note the settings for the spotlight and the material settings on the green 'gel'.
19363 |
Post by transient // Apr 7, 2009, 5:29pm
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transient
Total Posts: 977
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@Spacekdet - that's a really cool effect. I never would have thought of using transmission this way, thanks. :) |
Post by spacekdet // Apr 7, 2009, 6:40pm
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spacekdet
Total Posts: 1360
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Works with the ol' Colo(u)r Theory as well.
Here is a red spotlight, a blue 'gel', and the resulting purple light.
19369
Seems to work best with the spotlight. |
Post by transient // Apr 7, 2009, 6:59pm
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transient
Total Posts: 977
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Ooooooh, that's cool.
If Vray isn't coming back, then I would love to see an upgrade to Lightworks. That, plus a working 3delight plug-in and truespace is back in business. |
Post by Weevil // Apr 11, 2009, 9:16am
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Weevil
Total Posts: 534
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Thanks guys....Sadly...I don't have lightworks or any other render engine, just the software TS one...and for now that's how it's likely to stay. Thanks for the help and what I do is use a projector light shining outwards from the sphere itself. |
Post by splinters // Apr 11, 2009, 9:38am
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splinters
Total Posts: 4148
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Thanks guys....Sadly...I don't have lightworks or any other render engine, just the software TS one...and for now that's how it's likely to stay. Thanks for the help and what I do is use a projector light shining outwards from the sphere itself.
Weevil, if you have tS then you also have Lightworks and Virtualight. |
Post by Weevil // Apr 11, 2009, 10:06am
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Weevil
Total Posts: 534
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Not TS 6.6 surely :confused: |
Post by splinters // Apr 11, 2009, 10:08am
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splinters
Total Posts: 4148
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Lightworks is the inbuilt renderer in tS since version 5 (or 4). |
Post by Weevil // Apr 11, 2009, 10:15am
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Weevil
Total Posts: 534
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Odd...I never honestly knew about it, if it's built in i guess I've been using it the whole time....unless I have to do somethign else to be using that specific renderer...I'm a real herbert when it comes to these things |
Post by splinters // Apr 11, 2009, 10:17am
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splinters
Total Posts: 4148
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Unless you switched to Virtualight (7.6) or Vray, you must have been using it...:D |
Post by TomG // Apr 13, 2009, 3:58am
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TomG
Total Posts: 3397
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Yep, if you have tS6.6, whenever you click "render scene" or "render object" then that's Lightworks doing the rendering.
HTH!
Tom |
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