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General => Terragen Discussion => Topic started by: majidkaviani on September 30, 2015, 07:26:57 am

Title: vortex animating
Post by: majidkaviani on September 30, 2015, 07:26:57 am
hello
i have a question about vortex animating, i tried to animate clouds around the center of vortex, but it has more movement on the planet.
please see the GIF image .
thanks
Title: Re: vortex animating
Post by: TheBadger on September 30, 2015, 07:35:04 am
now that you brought it up, very curious why we have not seen an animation like you are trying, before this.
Hope you get your answer.
Title: Re: vortex animating
Post by: majidkaviani on September 30, 2015, 07:44:22 am
:)
me too
thank anyway
Title: Re: vortex animating
Post by: Kadri on September 30, 2015, 10:38:47 am

Not sure if i understand the problem but with the animated transform shader you are probably animating all of the above ones.
Title: Re: vortex animating
Post by: Dune on September 30, 2015, 10:49:32 am
Did the setup I mailed you not work? Or did you post this before your mail? Maybe check final position.
Title: Re: vortex animating
Post by: Kadri on September 30, 2015, 10:59:36 am

Looks like the vortex Y coordinates and the transform input coordinates are at different places Ulco?
Title: Re: vortex animating
Post by: Dune on September 30, 2015, 11:03:14 am
That could be the case. He mailed me, I made a setup, but that was based on 0/0/0. I never tried this, but it should work, I guess. Another way might be to situate the vortex and transform at 0/0/0, animate and add a second transform to move the whole thing to the location wanted. Works fine with image map shader that you want to locate at different locations.
Title: Re: vortex animating
Post by: Kadri on September 30, 2015, 11:04:09 am

Yep.
Title: Re: vortex animating
Post by: Matt on September 30, 2015, 11:06:37 pm
It sounds like Dune and Kadri can help you to get the rotation centred properly. But I would like to suggest a different way of animating this that will be more realistic. With a vortex like this, you don't want to rotate everything around the vortex at the same angular speed, because that makes the clouds that are far away from the centre move too fast. I would try animating the "vorticity" parameter in the vortex itself. This will produce a more natural velocity gradient from the centre of the vortex outwards.

Matt
Title: Re: vortex animating
Post by: Matt on September 30, 2015, 11:10:03 pm
... although the best results might come from combining both kinds of rotations to some extent, probably just a small amount of overall rotation, with most of the animation caused by the vorticity parameter.
Title: Re: vortex animating
Post by: Dune on October 01, 2015, 02:23:31 am
Sounds really better. Perhaps if you mask the area to be rotated (added as child to masked surface shader) by a soft simple shape or distance shader, you can influence the amount of rotation in the darker areas? Just a thought.
Title: Re: vortex animating
Post by: majidkaviani on October 01, 2015, 02:48:46 am
hi friends :)
thank to all specially DUNE
i checked your file that was correct, but in my scene the result is not correct
when i use vortex in normal coordinates (0.0.0) it works perfect, but if i paste my favorite coordinate its not work . all of clouds rotate around wrong position :(
in this case i had to move camera in front of normal vortex coordinate to get my goal .
Title: Re: vortex animating
Post by: Kadri on October 01, 2015, 04:37:26 am
Quote from: Matt on September 30, 2015, 11:06:37 pm
It sounds like Dune and Kadri can help you to get the rotation centred properly. But I would like to suggest a different way of animating this that will be more realistic. With a vortex like this, you don't want to rotate everything around the vortex at the same angular speed, because that makes the clouds that are far away from the centre move too fast. I would try animating the "vorticity" parameter in the vortex itself. This will produce a more natural velocity gradient from the centre of the vortex outwards.

Matt


Yes.I used it that way in my animation project.I have only posted a picture in that thread.But it works very nicely.
Title: Re: vortex animating
Post by: cyphyr on October 01, 2015, 06:22:03 am
This may (or not) help.
http://www.planetside.co.uk/forums/index.php/topic,20560.0.html (http://www.planetside.co.uk/forums/index.php/topic,20560.0.html)