Logo by KRAFTWERK - Contribute your own Logo!


it was a great time but no longer maintainable by c.Kleinhuis contact him for any data retrieval,
thanks and see you perhaps in 10 years again

this forum will stay online for reference
News: Follow us on Twitter
Welcome, Guest. Please login or register. June 03, 2023, 02:28:56 PM

Login with username, password and session length

The All New FractalForums is now in Public Beta Testing! Visit FractalForums.org and check it out!


A ConfectionPeriod 17 MinibrotPeriod 18 Julia (periodic bailout)
Period 17 Minibrot
Previous Image | Next Image
Description: Just a quick example from the standard z^2+c Mandelbrot that I created when testing my new periodic bailout formula, rendered exactly as seen (i.e. at 640*480) with the divergent area in black and max. iterations set to 10000.
The divergent bailout was 65536, the convergent bailout was 1e-8, the centre is:
with magnification:
The coloured areas are periods 17,34,51,68,85,102 and 119 simply coloured using smooth iterations with the ArcTan transfer function.
The render took around 2mins 50 secs using just one thread on my 3GHz P4HT - one thread as I'm still using the "DEBUG" option occaissionally and using more than one thread produces confusing compiler message output.
You can see slight errors for instance where the higher periodic areas attach to the main period 17 cardoid - the formula does allow the option of increasing the accuracy to almost completely avoid this but at the cost of using much higher iterations internally.
Unfortunately I haven't had as much time to work on the formula and special colourings for it as I hoped so it may be another few days before I finally upload to the UF database.

Edit: I just realised an optimisation for cases like this one so I added an extra option to the user parameters and tried it - with the extra option in use exactly the same image was rendered under the same conditions in 1min 4secs.
Total Favorities: 0 View Who Favorited
Filesize: 71.23kB
Height: 480 Width: 640
Keywords: period periodic attractor convergent mandelbrot minibrot 
Posted by: David Makin March 15, 2009, 04:35:59 PM

Rating: **** by 1 members.

Image Linking Codes
BB Code
Direct Link
Html Link
0 Members and 1 Guest are viewing this picture.
Related Images
Period 18 Julia (periodic bailout)

Rating: *****
Filesize: 246.42kB
Date: March 12, 2009, 02:09:08 AM
Comments (0)
By: David Makin
"True 3D" Minibrot

Rating: (None)
Filesize: 508.7kB
Date: June 09, 2009, 12:58:48 AM
Comments (1)
By: David Makin
Minibrot 3D

Rating: ***
Filesize: 28.43kB
Date: July 11, 2009, 08:17:26 PM
Comments (0)
By: Buddhi
E8192 Minibrot

Rating: ***
Filesize: 10.48MB
Date: May 31, 2016, 03:44:58 AM
Comments (0)
By: PieMan597
A Minibrot

Rating: *****
Filesize: 4.78MB
Date: January 23, 2017, 02:42:48 AM
Comments (0)
By: 3dickulus

Comments (0) rss

Return to Gallery

Powered by SMF Gallery Pro

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.167 seconds with 32 queries. (Pretty URLs adds 0.005s, 1q)