Pinch pole question

Tips for creating and manipulating planet textures for Celestia.
Topic author
Mr Noob
Posts: 78
Joined: 13.08.2007
With us: 17 years 3 months

Pinch pole question

Post #1by Mr Noob » 02.12.2008, 20:47

Hi

Using Adobe Photoshop CS2, I experimented with various buttons and tools in an attempt to create a rocky texture for a planet. I found a way to create one however now I am stuck on how to remove the pinch pole effect and a nasty seam line. Below is the planet rendered in "polar coordinates". I have already looked at the tutorials for textures thread, which does have a tutorial on removing the pinch pole, however I follow it and when I try to remove it I get a seam. Then when I fix the seam line, I get a pinch pole again. Could anyone explain how I could get rid of the pinch pole without getting a seam?

Image
Acer Aspire One D250 Netbook
CPU: Intel Atom N270 1.66 GHz
Chipset: Intel 945GSE Express
Memory: 1GB DDR 2 533 SDRAM
HDD: 160GB 5400rpm
Graphics: Intergrated Intel 945GMA
OS: Genuine Windows XP
Running: Celestia 1.6.0 (Windows)

zhar2
Posts: 204
Joined: 22.03.2008
With us: 16 years 8 months

Re: Pinch pole question

Post #2by zhar2 » 02.12.2008, 21:05

Well i use only gimp so ill tell u how i do it there:

for the seam line go to Filters>map>make seamless, if texture is a sort of map of some world u'll have to do it manually as making it seamless will distort a specific map.

for the polar pinch i go to filters>distort>polar coodinates, then manually remove it by blending and pasting or stuff, then redo polar cordinates but untick "to polar", then cut the pole and paste it on an untouched texture and blend in the edges, do the same for the other pole but remember to use "map backwards" in the polar cordinates dialog.

Topic author
Mr Noob
Posts: 78
Joined: 13.08.2007
With us: 17 years 3 months

Re: Pinch pole question

Post #3by Mr Noob » 02.12.2008, 21:23

Thanks!

I can use GIMP quite well so I will give it a shot :wink:
Acer Aspire One D250 Netbook
CPU: Intel Atom N270 1.66 GHz
Chipset: Intel 945GSE Express
Memory: 1GB DDR 2 533 SDRAM
HDD: 160GB 5400rpm
Graphics: Intergrated Intel 945GMA
OS: Genuine Windows XP
Running: Celestia 1.6.0 (Windows)

scalbers
Posts: 138
Joined: 30.01.2005
With us: 19 years 9 months

Re: Pinch pole question

Post #4by scalbers » 14.02.2009, 19:24

Nice tip there about the polar mapping feature in the GIMP :)
http://stevealbers.net

ElChristou
Developer
Posts: 3776
Joined: 04.02.2005
With us: 19 years 9 months

Re: Pinch pole question

Post #5by ElChristou » 14.02.2009, 19:39

scalbers wrote:Nice tip there about the polar mapping feature in the GIMP :)

:|

viewtopic.php?f=5&t=7013&p=52212

Look at the date of the thread... Once this kind of useful tips for newcomers was sticky but seems they were lost when the board was switch to PHP3... (BTW, it's why some text is glitched in the thread...)
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