Hurricane

[cyphyr]

I saw a discussion over at CGTalk about how one might make a hurricane so I thought I would give it a try.
C & C welcome
Richard

[Will]

neat, mind sharing how its done?

Regards,

Will

[old_blaggard]

That's very cool!  Could you post a .tgd?

[Sethren]

     Wow!

[cyphyr]

Thanks guys

I've posted the tgd bellow but the masks are too big to upload (6mb rar file).

The layers of Cumulus (3D) are stacked on top of each other 1000m appart. Each Cumulus layer has an Image Map blend shader attached to its density fractal. The three images used are taken from a satalite Infrared image of a weather system but the levels and curves have been altered successively to make the white cloud areas smaller and more concentrated. Each cloud layer is also successively more dense with increased edge sharpness as the cloud height goes up.

I hope that makes some kind of sense.

Richard

[RealUser]

WOW! Sounds easy to do! Thanks for sharing.

[zionner]

could someone give me a link to where you get the weather pictures he talked about

[cyphyr]

I just typed in Hurricane and infrared on google. Theres a lot out there.

richard

[zionner]

thanks

[Oshyan]

Very nice work indeed! Great results.

- Oshyan

[nvseal]

Wow! Fantastic! Thanks for sharing. 

[bigben]

Nice mix of cloud density and scale... 

Have you tried using the colour adjust shader instead of using 3 separate mask images?
Attached a sample clip with demo numbers. You'd need to tweak them to suit your image.

[bigben]

Running a render with my old Katrina mask... This is a very nice cloud setup. Attached the TGD from my render that illustrates better what I referred to in my previous post.  The numbers were derived from tweaking the image in Photoshop using Levels. Black/White levels in TG = input values in PSD/255, gamma is directly translated.

The mask image I'm using is the original BW conversion without any extra tweaking. I could have dropped the gamma on the image, but it's a good illustration of what the colour adjust node can do.

Temporary link to mask image:
<http://www.path.unimelb.edu.au/~bernardk/tgdemo/katrina_greyscale.tif> 21Mb
<http://www.path.unimelb.edu.au/~bernardk/tgdemo/katrina_greyscale.jpg> 190kb (1/4 resolution)

[rcallicotte]

cyphyr - congratulations!  What a great idea and wonderful execution.  AND you shared!  Wow.  Cool.  Thanks.

[old_blaggard]

That's rather clever.  Thanks for sharing that.  However, it's a pity that you need an image mask.  I'm working on making interesting procedural cloud formations using function nodes - I'll let you guys know how that turns out.