script to make a "tunnel" or "incomplete" polar coordinate filter

hanciong · **Joined:** Oct 31, 2011 **Posts:** 112

Hello,

is there any script to make a "tunnel"? the only thing I manage to find is polar coordinate filter, but it is too much. So it should be an "incomplete" polar coordinate filter.

so for example, I have this cloud picture: http://night-fate-stock.deviantart.com/art/above-the-clouds-304553983

and I want to make it into a "cloud tunnel" like this:
http://griphinator.deviantart.com/art/C ... -181153857

or maybe this one better represents what I want to achieve:
http://dragonleviosas.deviantart.com/ar ... -156082164

If I use polar coordinates filter, the outer part usually is "too distorted".

I hope really hope you guys understand what I mean.

Thanx for the helps

nzdawghaus · **Joined:** Jan 06, 2011 **Posts:** 26

Pan to Bow script- http://registry.gimp.org/node/20869

set to 360 (I had to flip the picture vertically first)

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

First create your best effort cloud ring (made horizontally seamless cloud line and ran Pan to Bow Script-fu set to 360 degs).

Attachment:

cloud_ring.png [ 968.64 KiB | Viewed 11682 times ]

Now run Mathmap's Droste preset:

Attachment:

droste.png [ 244.64 KiB | Viewed 11682 times ]

Do some addition clone/heal work and voila.

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

Just realized that I did a poor job at making it horizontally seamless. lolol

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

Fixed my ring and played with the Droste settings to give a wider ring and bigger center hole.

Graechan · **Posted:** Sat Jan 19, 2013 5:29 pm **(#6)**

Excellently done Lyle (filter Master)

Esper · **Joined:** Jul 17, 2012 **Posts:** 2769

yes lylejk, that looks pretty epic !

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

Thanks folks; call my final result the Tempest. Why not. lol

Esper · **Joined:** Jul 17, 2012 **Posts:** 2769

lyle, can this be done with the 'Droste' filter (under arrays & frames) from G'Mic as well ?

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

G'MIC doesn't give you the spiraled droste effect; it's more russian doll style, so, I don't think so Esper. Now, I gotta run.

Graechan · **Posted:** Sat Jan 19, 2013 7:23 pm **(#11)**

My Droste effort

lylejk · **Joined:** Sep 24, 2010 **Posts:** 12825

Still having fun; may share this one at other sites.

Rod · **Joined:** May 16, 2010 **Posts:** 16150

Does anyone have the pan to bow script? Can you attach it here please?

rich2005 · **Joined:** Mar 04, 2011 **Posts:** 2610

Amazing that it still works, this Gimp 2.10.38

Attachment:

pan-to-bow.jpg [ 90.06 KiB | Viewed 8995 times ]

Rod · **Joined:** May 16, 2010 **Posts:** 16150

rich2005 wrote:

Amazing that it still works, this Gimp 2.10.38

Attachment:

pan-to-bow.jpg

Thank you! :bigthup