Black dust streaks?

TheBlackHole · October 18, 2010, 02:51:23 PM

I'm trying to model Pluto's moon Charon in TG2, basing it on Neptune's moon Triton as seen in this Voyager photo:

I've thought of using a stretched power fractal, but I'm not sure if that will work. Any help would be appreciated.

AP · October 18, 2010, 11:15:17 PM

See what you can do with this. Unfortunately, the streaks would best be served using a unidirectional procedural blur noise a top the highest peaks in which case is either technically impossible or just has not been thought of.

Henry Blewer · October 19, 2010, 08:05:43 AM

I would try an image map. You would get very good control of the look this way.

TheBlackHole · October 19, 2010, 12:38:15 PM

Nice, ChrisC. Only problem is my Charon model has a radius of 593 km, not 6378 km like Earth, and mine's more blue than red. The red version might work for Pluto, though.

AP · October 19, 2010, 12:49:58 PM

Quote from: TheBlackHole on October 19, 2010, 12:38:15 PM
Nice, ChrisC. Only problem is my Charon model has a radius of 593 km, not 6378 km like Earth, and mine's more blue than red. The red version might work for Pluto, though.

Easily adjustable i would imagine. I also noticed that there are some distinct structures along the surface, however some new fractal types would have to be made for some.

TheBlackHole · October 19, 2010, 03:41:47 PM

You mean the wrinkles on the surface? I tried using glen5700's Fractalized Voronoi with negative displacement. I haven't looked at it up close yet, so I'm not really sure if the negative Voronoi works.

TheBlackHole · October 20, 2010, 12:06:54 PM

I looked and it chews up the planet with insane displacement. I had to remove it and opt for a PF node which doesn't quite give me what I want.

AP · October 20, 2010, 01:43:35 PM

Quote from: TheBlackHole on October 20, 2010, 12:06:54 PM
I looked and it chews up the planet with insane displacement. I had to remove it and opt for a PF node which doesn't quite give me what I want.

I don't think you are going to get what you want, at least not this way. Try an image map like what njeneb suggested and just layer paint a load of imagery in your photo editor as part of the alternative. Simply put, the fractal functions are not there. That moon has very distinct patterns along it's surface.

AP · October 20, 2010, 01:46:59 PM

I had found a map here. See if segments of it might help.

http://laps.noaa.gov/albers/sos/sos.html