New Map Math Filter: Planet X

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

Updated Gallery (All straight from Mathmap with no Gimp processing):

Attachment:

2.gif [ 1.31 MiB | Viewed 4192 times ]

Was toying with the idea of rendering moons/planets using mathematical constructs.
This is as far as I've got - still very much a work in progress.

Code attached so you can have fun making planets, moons, suns and black holes, working on enhancements so any comments welcome.

Attachment:

planetX.rar [411 Bytes]
Downloaded 228 times

Code: Select all

filter planetX(
image in, float dx:-10-10 (0),
float dy:-10-10 (0),
color Colour,
float radius:0-10 (0.8),
bool clip(1),
bool grain(1),
float grainL:0-1 (0.4),
float grainH:0-1 (0.8),
bool shadow(1),
float shadowF:-1-1.2 (0.33),
float shadowL:0-1 (0),
float shadowH:0-1 (1),
bool highlight(0),
float light_hi:0-1 (0.4),
float light_lo:0-1 (0.8)
)

rr = sqrt((x-dx)^2+(y-dy)^2);
rx = scale(x,dx-radius,dx+radius,0,1);
rz = scale(rr,0,radius,0,1);
  
final = Colour * rgba:[1,1,1,1];
 if grain then
  final = final * rand(grainL,grainH); end;

if shadow then
  sx = scale(x+(shadowF*2),dx-radius,dx+radius,shadowL,shadowH);
  final = final * sx;
end;

if highlight then
  hx = scale(rz,0,1,light_hi,light_lo);
  final = final * hx;
end;
 out = final;
 if clip && (rr>radius) then   out = in(xy); end;
 out end

Erisian · **Posted:** Tue Jul 10, 2012 5:51 pm **(#2)**

Cool. There are some nice noise filters in MM that might be useful for making seas.

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

Just playing really, I know there's much better ways of doing planets:) Had some fun in Gimp with these after mathmap has rendered them to come up with quite pleasing results.

Erisian · **Posted:** Tue Jul 10, 2012 6:03 pm **(#4)**

The results are pretty good. I like the texture on them.

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

The texture is just random noise, works ok for basic moon dust. You can simulate it in Gimp, using the RGB Noise Filter, Desaturate then Colourize.

I've plans on the texture front;) You can have fun in Gimp applying textures all day long though, here's a lifeless sun baked planet, just applied the Molten Material Filter to a basic render from mathmap..

Odinbc · **Posted:** Tue Jul 10, 2012 6:39 pm **(#6)**

I got hungry out of the deal

Odinbc · **Posted:** Tue Jul 10, 2012 7:09 pm **(#7)**

You could do something like this, National Geographic Photo of the Day (July 10, 2012).
Frog and Gourd
http://photography.nationalgeographic.c ... rog-gourd/

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

That's a beautiful effect on the gourd for sure.

Been working on better highlights and shadows, still a bit clunky to operate but results are getting better (See before and after below). Going to start playing with textures now..

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

Found a baron planet and unleashed Genesis on it - the results of some script for texture (no post processing in Gimp)..

Attachment:

baron.png [ 709.55 KiB | Viewed 4192 times ]

Attachment:

genesis.png [ 611.29 KiB | Viewed 4192 times ]

Erisian · **Posted:** Fri Jul 13, 2012 1:14 am **(#10)**

Thanks for the update. I like the last one best but they're all cool.

step7 · **Joined:** Jun 21, 2012 **Posts:** 106

Thank Erisan. I'll post an update to the filter code when it's back in a stable state, it's got a page full of sliders now and Mathmap has got quite slow with it, shame as playing God with the land/sea in the latest version is quite good fun

Erisian · **Posted:** Fri Jul 13, 2012 12:05 pm **(#12)**

Here's my first effort.

sallyanne · **Posted:** Wed Jun 12, 2013 3:45 am **(#13)**

Is this a script or plugin?

Erisian · **Posted:** Wed Jun 12, 2013 6:43 am **(#14)**

I believe it's a script sallyanne but I haven't used it for a long time and my memory isn't that good. Can you open RAR files? If not, 7Zip is good for it.

sallyanne · **Posted:** Wed Jun 12, 2013 8:15 am **(#15)**

I have 7zip. It's opened. I just have to install it. Thank you.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I installed it into the scripts folder but cannot find it so I had a play around with Julia and other GMIC scripts/filters

I started with a Julia fractal and changed it a little. After arraying it I used psychadelic glasswork on it then rotoidoscope. I think the centre almost looks like wool.

Oregonian · **Posted:** Wed Jun 12, 2013 9:39 am **(#16)**

It is not showing up in Math Map for me. I put it in the Expressions > Map folder and gave it permission to execute as a program. (Fedora Linux), and have closed and re-opened Gimp twice.

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

Wouldn't it be under File > Create > Misc > Planet Render Gtuts.com

Oregonian · **Posted:** Wed Jun 12, 2013 10:17 am **(#18)**

It is my understanding that it should show up in Filters > Generic > Mathmap since it is in the Math Map Expressions as are the other ones in Math Map.

Rod · **Joined:** May 16, 2010 **Posts:** 16021

If it is a mathmap script file (mm extension), you should try placing it in the mathmap>extensions>extras folder.
Then load it through Filters>Generic>MathMap>MathMap When the interface opens select load and search for the filter.

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

I guess mine is a different edition. I used it not too long ago in a tute. Since I re-installed my Gimp a while back I never did get MM and GAP back in but all my mm files are still in my expression folders.
Anyway, this is the one I have.