mograph or tp aurora borealis

[Srek]

Can you provide a link or example to this?

[Carl007]

This is sort of a aurora borealis that was used for some intros at an event some time ago, I used mograph.

http://www.carl.stendahls.se/motion/norr3_anime_pixlet.mov

[specs2]

something like this: http://youtube.com/watch?v=YJBrMXSn-hU

i've seen something similiar, that was done with MoGraph, but I don't recall how.
I've got this in my bookmarks, maybe this is helpful for you: http://www.c4dcafe.com/reviews/Mograph/index.php

[paomarn]

this is the link:

http://www.3dworldmag.com/page/3dworld?entry=3d_world_103_s_northern

[Hilt]

Cloth + wind dynamics on a plane and some gradiend, slightly animated shader.

[specs2]

pyrocluster on particles might work as well.

[JoelOtron]

YEs to add to Hilt's suggestion--a plane+wind deformer (and or displacement deformer). Use the fresnel shader in the alpha channel and the luminance channel--and maybe apply glow.

[C.Smith]

YEs to add to Hilt's suggestion--a plane+wind deformer (and or displacement deformer). Use the fresnel shader in the alpha channel and the luminance channel--and maybe apply glow.

In CSTools there is a tool called CS_Flux that does what Joel just described. Download in my sig.

[JJNorton]

I did some early experiments with volumetric lights along a formula spline with mograph and various effectors that looked promising with some tweaking.

[JoelOtron]

YES--was gonna also mention Chris's toolset. Its great.

I did it here manually--I wanted to add a few other things to it.


MOVIE (http://www.betatronstudios.com/joel/abh264.mov)

heres the file:

[paomarn]

great! thank you very much

[specs2]

YES--was gonna also mention Chris's toolset. Its great.

I did it here manually--I wanted to add a few other things to it.


MOVIE (http://www.betatronstudios.com/joel/abh264.mov)

heres the file:

Joel, is that displace deformer from that tool set?

[JoelOtron]

Displace deformer is part of mograph. Its not neccasary--it just added a bit of secondary motion using a particular noise shader. You can substitute displacement or another flag deformer if you wish.

[rurik]

Hello

I've been playing around with this project, that I find fascinating. I'm trying to achieve an effect where the aurora borealis would illuminate the landscape. How could that be achieved?

Thanks!
Alex

[JoelOtron]

(assuming your talking about mine?) If so--I was thinking the same thing--its rather static now.

The easiest way to do this would be to fake it. in the luminance channel for the landscape--change the shader to a layer shader. Keep the fresnel shader in there.

Then copy and paste the same gradient found in the auroras shader into a new layer below the fresnel layer. Set the frensle to "multiply". Then adjust the gradient shader so the "frequnecy" and "turbulence" are pumped up just a bit.

This should get you a subtle sense of light and color playing on the landscape (will affect only the backlit highlights on the edges.

Hope this makes sense (and hope this works too--just winging it here--gotta get back to work for now...)

[rurik]

That worked beautifully, thanks Joel!

Another question...In your particular example, the noise shader creates "holes" in the aurora borealis if I boost up the saturation and luminance of the colors. What noise shader would you use to keep the displacement purely "vertical", as in only vertical bands vs. occasional "blobs".
Does this make sense?

Thanks
Alex

[JoelOtron]

Sure-glad it made sense.

You could go into the noise shader thats loaded into the alpha (or transparency--forget which one I did) and just increase the scale on the Y axis (try that at least) so its set to like 2000m. That should work. You may need to decrease the width of the noise on the X axis as well to enhance the stripe effect.

[spirozero]

This is enlightening. I've always wonder how gkaster created this effect ...

http://i180.photobucket.com/albums/x140/spirozero/aurora2.jpg

http://i180.photobucket.com/albums/x140/spirozero/aurora3.jpg

http://i180.photobucket.com/albums/x140/spirozero/aurora4.jpg

Here's the actual video (http://www.gkaster.com/motion-design-trilogie-du-samedi-11.html).

He must have used this aurora borealis effect in order to create those beautiful wavy beams of light, eh? It must have been all done in C4D since the beams of light are reflected in the spheres.

(I hope gkaster doesn't mind me linking to his site - his work is really amazing).

[rurik]

Strange, I thought I replied but my response didn't show up..

Anyways, I tried your suggestion, and I also changed the alpha map to be a similar threaded noise, but I'm still seeing these blobs.
What do you think?

Thanks
Alex

[JoelOtron]

Those "blobs" are actually casued by the fresnel falloff shder thats loaded in the trans or alpha reacting to the deformed geometry of the mesh . Turn off the "displace deformer--or change the deformeres noise attributes so the noise in there is stretched in a similar way that you did with the shader. You may have to addjust the flag deformer as well. As the deformer generates round indentation on the mesh--those areas dissapear altogether--so thats why your getting the blobs.

[CGTalk Moderation]

This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.