realistic planet rings (Saturn) how to?

spacehead2_1 · **Joined:** Aug 14, 2014 **Posts:** 39

GIMP Version: 2.8.10
Operating System: Windows
GIMP Experience: Basic Level

Hi! I must make planet rings for my planet (3d model with Blender 2.7). I have already photo realistic textures for that planet, so i need make those rings. And i must make them like real thing. Any good ideas how to start this project???
I have found some planet ring images from nasa and i put one of them here. So you can see what i must to do...
Best regards Mr spacehead2_1 :paint

ofnuts · **Joined:** Oct 25, 2010 **Posts:** 4752

Use RobA's SampleGradientAlongPath script to using a path that crosses the ring, then use the gradient in a radial blend. You can then apply scale/perspective transforms to the result.

Attachment:

EarthRings.jpg [ 145.38 KiB | Viewed 5554 times ]

rich2005 · **Joined:** Mar 04, 2011 **Posts:** 2435

As an alternative

This thread viewtopic.php?f=9&t=9480&start=0&hilit=planet

and if you go down to post #6 an updated version of the planet rings.scm

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

This script works fine on my gimp-2.8.10

spacehead2_1 · **Joined:** Aug 14, 2014 **Posts:** 39

ofnuts wrote:

Use RobA's SampleGradientAlongPath script to using a path that crosses the ring, then use the gradient in a radial blend. You can then apply scale/perspective transforms to the result.

Attachment:

EarthRings.jpg

thank you for the fast answer! I have now installed RobA's SampleGradientAlongPath script,it was easy thing, but can you tell me how to apply your instructions step by step? :oops:

Akros · **Joined:** Jan 10, 2013 **Posts:** 863

ofnuts great idea!

Akros · **Joined:** Jan 10, 2013 **Posts:** 863

spacehead2_1 wrote:

I have now installed RobA's SampleGradientAlongPath script,it was easy thing, but can you tell me how to apply your instructions step by step? :oops:

Check it:
viewtopic.php?f=15&t=8716&start=10#p112659

Ella · **Joined:** May 17, 2014 **Posts:** 1445

Here's another tutorial to make realistic planet rings

http://www.scottphotographics.com/creating-planets-and-planetary-rings-in-gimp/

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

Very good Ella Louise, I did the second one on that link a couple years ago and it worked well.
ultimate-gimp-planet-tutorial

Ella · **Joined:** May 17, 2014 **Posts:** 1445

I gave it a quick try.

The other tuts looks interesting too, molly!

molly · **Joined:** Apr 07, 2010 **Posts:** 14182

beautiful job Ella Louise

Ella · **Joined:** May 17, 2014 **Posts:** 1445

Thanks molly!

K1TesseraEna · **Joined:** Sep 22, 2012 **Posts:** 2089 **Location:** US

If you want to make it look real "real" do it in Blender.

In gimp you can only do a guesswork on proper shadows and reflections.
Depending on position of the Sun/star your planet must cast a shadow on the rings and vise versa.
And it's even more complicated with lighting because the ring brightness and reflection will also depend on the vintage point.

There are two option in Blender
1. make a ring plane and UV-map NASA photographs or self-made images. There are also the gaps between the rings, so for the see-through
use mask (you have to make it) in Composite node editor
2. make the rings with Blender particle system

But I guess I should have started with a question: is your Blender project an animation or a still image?

spacehead2_1 · **Joined:** Aug 14, 2014 **Posts:** 39

It is still image

K1TesseraEna · **Joined:** Sep 22, 2012 **Posts:** 2089 **Location:** US

spacehead2_1 wrote:

It is still image

Then option #1

sallyanne · **Posted:** Mon Aug 25, 2014 6:40 am **(#16)**

I have recently found a script by 'James Sambrook' that does planet rings. You still have to do the shadows etc by yourself. I still have to learn that. And there are a few settings as well.
Can't remember where I got it but it is compatible with gimp.

That is a great way to do rings with the paths and gradient ofnuts!

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