physicist posted Nov 2 '22 at 12:08 am
I'm contemplating writing a new mapping formula. I could write this as a transformation in a uxf file, or use Plug-In Transformation from Standard.ulb and write a UserTransformation to go in my ulb file.

So far, I don't see any advantages to doing it one way or the other. Comments?

recent by physicist  ·  Nov 10 '22 at 8:56 pm
physicist posted Nov 2 '22 at 3:53 pm
In a float param block, the compiler allows

default = 1/#magn
which can be useful, but doesn't allow

min = 1/#magn
which also can be useful.

Also the help entry "min setting" has a typo. The sentence "If this setting is not specified, there is no maximum value for the parameter." Obviously it should say minimum.

JVYV posted Oct 31 '22 at 12:17 pm
Hi All,

This month 5 new fractal parameter files in the collection.

You can find the whole existing collection at the cloud of Microsoft:!1034&authkey=!ALIZio6ZmgV1aAo&ithint=folder%2ctxt

Greetings from Belgium

Jan Vyvey

Eric B posted Oct 29 '22 at 12:18 am
Hi folks. I’ve made a zoom animation. I like it and now I want to extend it by adding another section at the end. I want the zoom speed to stay the same for the whole animation. In other words, I don’t want the movie to zoom in slowly during the first part and then zoom in quickly during the second part.

I’ve found the image I want to use for the new end frame. But UF w
I have a problem. I tried using perturbation theory for the Magnet Mandelbrot type I fractal, but after going a quadrillion zooms, the image becomes... well, you know what happens.

The code:

Magnet1Mandelbrot {
; Magnetic Mandelbrot set type 1. Use Switch Mode to select a
; magnetic Julia set.
z = @start
c = #pixel
x = real(z)
y = imag(z)
i = sqrt(-1)
z =
recent by Alexandre Vachon  ·  Oct 28 '22 at 4:29 pm
physicist posted Oct 10 '22 at 4:49 pm
Mark Townsend's Fractalia formulas in mt.ufm in essence is

xnew = quadratic in x and y
ynew = quadratic in x and y
znew = xnew + flip(ynew)
Since each quadratic has 6 free parameters, he made 6 versions, Fractalia-1 through Fractalia-6, so the user could switch among them to help find good parameters.

My version instead uses one or two steps of randomization of parameters to help find a g
Alexandre Vachon posted Oct 7 '22 at 11:52 pm
Has anyone tried to make a fractal from the Jenkins-Traub algorithm?

physicist posted Oct 6 '22 at 1:49 am
Here's a fractal with 100% of points Inside; no points reach the bailout criterion. The Statistics tab says that the Min and Max iterations are both zero. I would have expected that both Min and Max would be set to #maxiter.

This is either a bug or a feature.

Here's an example:
/>test {
title="test" width=800 height=600 layers=1
credits="Jim Blue;10/5/2022" ant
JVYV posted Oct 1 '22 at 9:42 am
Hi All,

This month no new fractal parameter files in the collection.

You can find the whole existing collection at the cloud of Microsoft:!1034&authkey=!ALIZio6ZmgV1aAo&ithint=folder%2ctxt

Greetings from Belgium

Jan Vyvey

dannac posted Sep 26 '22 at 5:27 pm
Page 112 of pdf manual.

Says I can " click and hold down " Browse and a presets menu will appear.

Edit Presets, Add Current, Delete, Rename, Move.

That does not work no matter how long I hold.

Help please.

recent by dannac  ·  Sep 26 '22 at 10:12 pm
physicist posted Sep 22 '22 at 7:54 pm
The built-in functions include round, floor, ceil, and trunc. Trunc rounds towards zero. For floats, the behavior of trunc is equivalent to the following:

float func trunc(float x)
if x >= 0
return floor(x)
return ceil(x)
There is no equivalent function with < instead of >. In mathematics, I haven't even found a name for this. The best name that I cou
recent by physicist  ·  Sep 23 '22 at 3:56 pm
physicist posted Sep 9 '22 at 2:27 pm
Currently #numiter is readable only in the Final section of a ucl coloring formula. It is not even readable in the ResultIndex function of a ulb Coloring formula, where one might expect to be able to use it.

If #numiter were readable in any coloring formula, whether in a .ucl or. ulb file, some interesting coloring options would be available. For example, if coloring according to distance fro
recent by physicist  ·  Sep 13 '22 at 7:50 pm
JVYV posted Aug 31 '22 at 11:57 am
This month collection is the nice work of Mikhail Juhl, also known as OutsideFate. Please read his comments.

"All of my stuff is copyrighted by default, and so are these parameters. There is, however, a slight exemption to this rule as listed below:
You are allowed to review these parameters for personal learning, tweaking and as reference for future fractals.
You are allowed to monetis
recent by JVYV  ·  Aug 31 '22 at 7:30 pm
OutsideFate posted Aug 2 '22 at 9:47 pm
Hey guys, Fate here! I just realised that in the 15 years I've been using UltraFractal, I've never actually made a post here, so I wanted to start out with a bang!

I'll be sharing the parameter packs that I've assembled from my pieces and share it with you guys here, on the off chance you don't have a deviantART account!

At the links down below, you can find 39 hand-picked parameters of m
recent by OutsideFate  ·  Aug 9 '22 at 9:44 pm
physicist posted Jul 14 '22 at 6:35 pm
The compiler objects to the continuation character in the example below, says it's not a valid character there. The truth is that the comment is not allowed there (should it be allowed there?), and the error message is wrong.

param enum F
caption = "F"
enum = "a" \ ; comment
It's fine without the comment.

param enum F
caption = "F"
enum = "a" \
recent by Frederik Slijkerman  ·  Aug 2 '22 at 1:30 pm
JVYV posted Jul 31 '22 at 2:37 pm
Hi All,

This month 7 very beautiful fractals in the collection.

You can find the whole existing collection at the cloud of Microsoft:!1034&authkey=!ALIZio6ZmgV1aAo&ithint=folder%2ctxt

Greetings from Belgium

Jan Vyvey

Spizzi posted Jul 22 '22 at 7:11 pm
Hi All,
Today an UPR with SlopeHyperPolinomialSet, a Slope Mandeldrot.
Good week-end

polinomialMandelbrot {
Spizzi posted Jul 20 '22 at 6:06 pm
Hi all,
I share an upr with a new formula in as2.ufm, SlopehyperMath_V1, hope you find interesting.

20072022Spiral {
dannac posted Jul 15 '22 at 8:53 pm
I messed up my panels somehow.

At one time I could have both panels open at the same time and docked on the right side.

Now I can only have one open at a time .... if I click one, the other closes.

Any ideas how to fix them.

recent by dannac  ·  Jul 18 '22 at 12:56 pm
dannac posted Jul 10 '22 at 3:05 pm
If at some point you read this .... could use a little help.

Progressing through but now stuck on page 11 section 4.4.

Cannot figure how to "drop or attach" the Mask On layer to the Edge Highlight layer.

recent by dannac  ·  Jul 12 '22 at 11:02 pm
Hi all,

I'm very happy to announce the release of Ultra Fractal 6.05. This free update for existing version 6 users improves anti-aliasing quality when rendering to disk (especially with higher Depth settings), along with various bug fixes and small improvements. You can download it here:

See here for a full list of changes in this version:
recent by Frederik Slijkerman  ·  Jul 10 '22 at 4:15 pm
dannac posted Jul 9 '22 at 9:05 pm
When I save parameters they are saved in a parameters folder.

If I click to open a new file, and look into that parameter folder, it is empty.

What am I missing ?

recent by dannac  ·  Jul 10 '22 at 2:30 am
dannac posted Jul 8 '22 at 10:12 pm
Hi ... from a newbie to UF and fractals .

Came across a tutorial by Velvet Glove on a marble sphere.
( thanks for all the articles Velvet Glove)

So I'm trying different things and have image below and could use some advice.

With each layer added, the layer below becomes less visible or a little duller.

My question is how would I correct this ... is this where a layer mask would
recent by dannac  ·  Jul 9 '22 at 8:43 pm

I just ran into this new problem. When I render to disk in high resolution, it tells me that I have to render in tiles because the image size would exceed 2 GB. This didn't happen before. Just to make sure, I tried to re-render an older image which previously worked, and UF is now also refusing to render it.

In one instance, the predicted file size was around 900 MB, the sum total
recent by Frederik Slijkerman  ·  Jul 8 '22 at 3:52 pm
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