Droste (Mathmap) With a G'MIC twist.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

mahvin wrote:

I did have to jump into G'MIC to use mirror array, (is there anything similar in MathMap? - I didn't see it

Wow that is cool..
Mathmap has something ... very vaguely similar to mirrored array

It is on the main tab are the " edges" (or "contour" ? i can't check by now ) options for X and Y
to choise how will be filled empty spaces
suppose you want map a image to a sphere, images are always rectangular so how to fill what outside the sphere:
color - with transparency or a solid color
mirror- with a mirrored image
warp - by warping

in some case the effect of "mirror" could be similar to mirrored array, but some filters as Droste really mixed up what inside and ouside the edges
so options as mirror and warp may give quite weird and surprising results

RobA · **Joined:** Jul 14, 2010 **Posts:** 697

mahvin wrote:

I am finally getting somewhere with MathMap, using the composer with Droste and Mercator filters. I did have to jump into G'MIC to use mirror array, (is there anything similar in MathMap? - I didn't see it)

Not sure how mirror array works.
Here is a mod of the tile mm script to be a mirror tile:

Code: Select all

stretched filter mirrortile (stretched image in, int n: 1-10 (3))
  if (floor(((x+1)*n)/W%2-1)) then
    newx = ((x+1)*n)%2-1;
  else
    newx = ((W-x+1)*n)%2-1;
  end;
  if (floor(((y+1)*n)/H%2-1)) then
    newy = ((y+1)*n)%2-1;
  else
    newy = ((H-y+1)*n)%2-1;
  end;
  in(xy:[newx,newy])
end

Hope that does what you want.

-Rob A>

PhotoMaster · **Posted:** Mon Jan 31, 2011 4:23 pm **(#13)**

The mathmap mirrortiles code works awesomely! Thank you!!

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

thank Rob !

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4050

Thanks, Rob!

pranav · **Joined:** Aug 13, 2010 **Posts:** 23

Good works Mahvin!

OT: there is a great open source fractal renderer for Windows called Apophysis 7x (originally Apophysis that is kinda discontinued). Here are links to download it and see what it can do.

http://apophysis.xyrus-worx.net/
http://ivankorsario.deviantart.com/gallery/26950606/

PhotoMaster · **Posted:** Tue Feb 01, 2011 12:30 am **(#17)**

The Apophysis site behaves a little weird and the DA gallery is returning a 404 error.