jam posted Oct 20 '16 at 1:44 pm
Greetings. Just an FYI, I've uploaded a new coloring formula to the jam2.ucl public folder. It uses various statistical averages about the orbit points to generate a variety of smooth and TIA-like colorings. The UPR below demonstrates some features: Smooth colorings (layers 1 & 3), TIA-like (layers 2 & 4), using the bailout adjustment parameters (6) to eliminate iteration bands of lay
recent by Otto Magus  ·  Nov 15 '16 at 2:02 pm
Otto Magus posted Dec 7 '15 at 1:26 pm
Does anyone know how to write a formula for this fractal?
I've seen it called a teardrop or mandeldrop fractal, but after much experimentation have been unable to recreate it.

There may already be a formula for this in the database, but I couldn't find one.

recent by adam0701  ·  Nov 9 '16 at 8:49 am
Encrypted posted Jan 6 '16 at 3:36 am
Keep me logged in posted Nov 27th 2015
Staying logged in between sessions still not working for me.

Dec 1 '15 at 12:41 pm
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Nov 29 '15 at 10:30 am
Codoforum blog mentions a plugin called codoPM to exchange messages and files privately

recent by Liesbeth Quak  ·  Oct 22 '16 at 5:41 pm
This is a formula I found initially through a program for the iPad called Frax...
They use a Line Average coloring algorithm... I googled it and found this.
I have no clue how to program it into UF, so I was hoping to find someone here that did know how...

float xmin = -2.5;
float ymin = -2.0;
float wh = 4;
float stripes = 5.0;
int maxIterations = 1000;

void setup() {
size(800, 80
recent by EvrWccn  ·  Oct 15 '16 at 5:03 am
I've got a major issue with this coloring algorithm which won't render to disk. Unfortunately it's crucial to a design and I've drawn 10 layers apart, rendering them separately to disk until I discovered the culprit. My guess is that it leads to some sort of infinite loop in the rendering process which prevents UF from completing the task. I've also updated all files of the public formulas. If an
recent by fractalrebel  ·  Sep 29 '16 at 7:55 pm
Plug-in Tutorial: Image Traps Part III

This is the last part to the tutorial. All of the example uprs use plug-ins for the Colors slot. Two of them are slow in rendering as they use an emboss convolution filter (3 min 31 sec for EtchedMetal and 16 min 22 sec for EmbossedGnarly on my computer - Intel quadcore 3240 3.4 GHz). Be sure you have Ultrafractal set so that the minimum number of threa
recent by Liesbeth Quak  ·  Sep 2 '16 at 9:55 pm
JVYV posted Sep 2 '16 at 3:41 pm
Hi All,

The August 2016 collection of the parameter files of UF is sent to the cloud.

You can find them at the cloud of Microsoft:


Greetings from Belgium,

Jan Vyvey

recent by Liesbeth Quak  ·  Sep 2 '16 at 7:20 pm
In writing this tutorial some bugs were found in some of the plug-ins. Please download a new copy of reb.ulb before continuing.

Continuing with a survey of the main plug-in slots the next section is Images and Coloring. The primary slot is Colors with a default plug-in of No Color. The base class is ColorTrap, which is in common.ulb. The following plug-ins will plug into the Colors slot, but
recent by Liesbeth Quak  ·  Sep 1 '16 at 9:45 pm
fractalrebel posted Aug 10 '16 at 9:17 pm
This formula is derived from the Ducks formula in sam.ufm with multiple modifications. Bailout is determined by the number of iterations rather than a convergence or divergence criteria, so an iterations parameter which is independent of the value on the Maximum Iterations value on the Formula Tab has been included. The value for 'Iterations for Bailout' must always be less than the Maximum Itera
recent by Liesbeth Quak  ·  Sep 1 '16 at 12:55 pm
JVYV posted Aug 1 '16 at 10:57 am
Hi All,

The July 2016 collection of the parameter files of UF is sent to the cloud.

You can find them at the cloud of Microsoft:


Greetings from Belgium,

Jan Vyvey

recent by Liesbeth Quak  ·  Aug 31 '16 at 10:37 pm
fractalrebel posted Aug 20 '16 at 8:16 pm
Ottomagus suggested some additional functions to add to my extended function set that is used by Smooth Alterations, Ducks Switch and Lucy Goosey Switch. The coloring formula Smooth Alterations is the simplest test bed so I started there. After testing and debugging I have uploaded the latest version of Smooth Alterations to the database. Lucy Goosey will be next. Here is a quick example with th
recent by Liesbeth Quak  ·  Aug 31 '16 at 10:24 pm
fractalrebel posted Aug 26 '16 at 7:27 pm
Lucy Goosey Switch has been upgraded with additions to the extended function set. These are used for 'First function' and 'Last function'. Here is an example.

log_primecount {
recent by Liesbeth Quak  ·  Aug 31 '16 at 10:22 pm
photoceram posted Aug 15 '16 at 3:41 pm
It's not a bug but 2 years ago I made a fractal with Itelinsky in eew.ufm (this formula was added jul 31, 2014, reported in the list of modifications). Can anybody tell me where I can find it?
I don't remember if my fractal was interesting but I want to know if it is!
With many thanks

recent by photoceram  ·  Aug 18 '16 at 10:19 am
janimue posted Aug 9 '16 at 8:39 pm
This is a follow up to a previous question on using external imagery. I'm doing a series of color cycling animations primarily but not exclusively using fractals for the hypnotic effect to create quick meditation trance states. I've been able to get external imagery & correct the gradients to the actual picture but when I try to cycle the gradient it remaps each time to the original image col
recent by fractalrebel  ·  Aug 10 '16 at 11:19 pm
Otto Magus posted Aug 6 '16 at 1:29 pm
is it possible to provide the option of alternative bailouts in the same formula?

More specifically, I wanted to include convergent and divergent bailouts:
|z|<@bailout (default 4.0)
|z|>@bailout (default 0.001)
It seems only one expression is allowed in the bailout section. Is there a way to do this? Any help would be appreciated.

recent by Otto Magus  ·  Aug 7 '16 at 9:53 am
ed_algra posted Aug 2 '16 at 10:50 am
'Widgeon', a variant of 'Ducky Plus'.

'Widgeon' is based on the same principle as 'Ducky Plus': change of the kind of operation during the iteration process. In 'Ducky Plus' there are 3 steps, each with a number of iterations, here in 'Widgeon', the second step consists of only one iteration.
So for each treated pixel the iteration series starts with a certain formula, determined by the pa
Image Traps is based upon Damien Jones' Orbit Traps Gradient but with many additional enhancements. It has image import capabilities. Image examples will be taken from from my website. The link is


Download and unzip to a convenient place. This tutorial assumes the images are in a folder titled TutImage which is in the Ultrafractal folder titled Fo
recent by Velvet--Glove  ·  Jul 21 '16 at 1:14 pm
fractalrebel posted Jul 15 '16 at 6:57 pm
I have started the plug-in tutorial for Image Traps. I have not done a complete inventory, but I believe Image Traps has more plug-in options than any other Ultrafractal software formula. Consequently there will be several upr examples, I am not sure of how many yet. Because of its image import capabilities I will also be including a link to a zip file on my website that has a number of images th
recent by Frederik Slijkerman  ·  Jul 16 '16 at 1:28 pm
Mobius {
recent by Liesbeth Quak  ·  Jul 13 '16 at 10:13 pm
MandelbulbZpXp3 {
recent by Liesbeth Quak  ·  Jul 13 '16 at 10:05 pm
SlicedJuliabulb {
recent by Liesbeth Quak  ·  Jul 13 '16 at 10:01 pm
This is a 3D raytracing formula with 60 3D plug-in formulas available. Two coloring formulas are available: 3D Fractal Coloring Gradient Progressive and 3D Fractal Coloring Direct Progressive.

Parameters and Options:
The main raytracer has a number of options and parameters. The main algorithm is based upon an article by Hart, Sandin and Kauffman for estimating the distance from a point to
MakinMagicFractals posted Jul 5 '16 at 10:51 am
Hi Frederik, any progress on UF 6 ? And features such as array parameters or colour palette parameters ? Or how about a general data load/save were the data form (to a general memory buffer) is purely defined by the formula author - enabling direct input/output of 2D or 3D data for use in other software (or even allowing UF to be used to process other data forms such as sound data).
Just wonde
recent by Frederik Slijkerman  ·  Jul 10 '16 at 2:16 pm
fractalrebel posted Jul 7 '16 at 6:42 pm
For the Embossed Traps tutorial open Object Formula Switch Lite and load the the Switch Trap Embossed plug-in. In the Trap Parameters section note the Fractal formula plug-in, which is actually a specially designed Trap Shape that only works with Switch Trap Embossed. There are 104 to choose from. The default is Rose Range Lite and is closely modelled after a formula of Kerry Mitchell's. The Tra
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