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View Full Version : Metaeffector to control materials?


Sbowling
11-09-2004, 09:34 AM
Has anyone had any experience using metaeffectors to control materials? Is this possible? I thought I read something about this, ut can't seem to find it again.

Suricate
11-09-2004, 09:53 AM
Yes, you can. In the docs of Thomas Helzle's AoN shaders (the docs can be downloaded for free) there is a tutorial about wood that uses metaeffectors. Also, in the folder messiah_content/samples, check out the 'Burn_Material_04' scene.

Sbowling
11-09-2004, 11:51 AM
Yes, you can. In the docs of Thomas Helzle's AoN shaders (the docs can be downloaded for free) there is a tutorial about wood that uses metaeffectors. Also, in the folder messiah_content/samples, check out the 'Burn_Material_04' scene.
Thanks! I knew I'd seen that somewhere, but couldn't remember where.

chikega
11-14-2004, 03:37 AM
The following is from an older thread (http://www.cgtalk.com/showthread.php?t=115932&page=2&highlight=embryo) - earlier this year experimenting with Metaeffectors and shading along with SSS:

Well, here's my latest derivation of the preceeding images. I modified the stomach object to make it appear more embryo like. It's not accurate - but it does give us something to try the shaders on. Here, I played with the Weightspot nodes tied into two Metaeffector effectors. One effector is subtracting from the other and is tied into the Thickness parameter via a Multinoise node in order to create an eye object.

http://www.3ddmd.com/images/Messiah/Fetus_WS.png

http://www.3ddmd.com/images/Messiah/Fetus_ME.png

http://www.3ddmd.com/images/Messiah/Fetus1.jpg

The effectors seem to be surface based and not volumetric. So, the same result could probably be achieved with image maps - but it was interesting to play with. Now that I think about it, a grey scale image map could probably be used to vary the translucency or, in this case, the thickness parameter as in G2 tests:

http://www.3ddmd.com/G2_tadpole.htm

That will be the next experiment:)

Oh .. the above image rendered in 2 min 40 sec at 640X480, AA Enhanced Level 4, Light source: Environment & Direct, GI Type: Monte Carlo, GI Samples: 3, GI Depth:1, GI Intensity:0.5.

This is on a PIV 3.2Ghz, 800mhz FSB, 1GB RAM HP laptop.[/QUOTE]

Sbowling
11-15-2004, 12:14 PM
Thanks for the additional information Gary. Definitely makes me want to do some more testing, but it's 5:00 am and I need ot get to bed! Sometimes I hate this program.:D

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