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 Post subject: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 9:35 am  (#1) 
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Joined: Oct 31, 2011
Posts: 105
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 :D


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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 10:49 am  (#2) 
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Posts: 27
Pan to Bow script- http://registry.gimp.org/node/20869

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


Attachments:
above_the_clouds_by_night_fate_stock-d51bncv.jpg
above_the_clouds_by_night_fate_stock-d51bncv.jpg [ 138.09 KiB | Viewed 1285 times ]
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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 10:50 am  (#3) 
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Posts: 9243
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
cloud_ring.png [ 968.64 KiB | Viewed 1285 times ]


Now run Mathmap's Droste preset:

Attachment:
droste.png
droste.png [ 244.64 KiB | Viewed 1285 times ]


Do some addition clone/heal work and voila. :)


Attachments:
cloud_ring-droste.png
cloud_ring-droste.png [ 967.3 KiB | Viewed 1285 times ]

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Lyle

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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 10:52 am  (#4) 
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Just realized that I did a poor job at making it horizontally seamless. lolol

:)

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Lyle

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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 11:17 am  (#5) 
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Fixed my ring and played with the Droste settings to give a wider ring and bigger center hole. :)


Attachments:
cloud_ring-droste.png
cloud_ring-droste.png [ 878.18 KiB | Viewed 1278 times ]

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Lyle

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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 5:29 pm  (#6) 
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Joined: Feb 18, 2011
Posts: 4375
Location: Bendigo Vic. Australia
Excellently done Lyle (filter Master)

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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 5:56 pm  (#7) 
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yes lylejk, that looks pretty epic !


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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 6:08 pm  (#8) 
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Thanks folks; call my final result the Tempest. Why not. lol

:)

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Lyle

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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 6:37 pm  (#9) 
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lyle, can this be done with the 'Droste' filter (under arrays & frames) from G'Mic as well ?


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 Post subject: Re: script to make a "tunnel" or "incomplete" polar coordinate filter
PostPosted: Sat Jan 19, 2013 6:45 pm  (#10) 
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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. :)

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Lyle

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