|
 |
|
| |
With this filter, you can create fractals and multicolored pictures
verging to chaos. Unlike the
IFS Compose filter, with which you
can fix the fractal structure precisely, this filter lets you perform
fractals simply.
You can find this filter through
→ → .
-
Realtime preview
-
Uncheck the Real time preview only if your
computer is slow. In this case, you can update preview by
clicking on the Redraw button.
By clicking-dragging mouse pointer on preview, you can draw a
rectangle delimiting an area which will be zoomed.
-
Zoom
-
You have there some options to zoom in or zoom out. The
Undo allows you to return to previous
state, before zooming. The Redo allows
you to reestablish the zoom you had undone, without having to
re-create it with the zoom-in button.
-
Parameters tab
-
This tab contains some options to set fractal calculation and
select fractal type.
-
Fractal Parameters
-
here, you have sliders and input boxes to set fractal
spreading, repetition and aspect.
-
XMIN; XMAX; YMIN; YMAX
-
You can set fractal spreading between a MINimum and
a MAXimum, in the horizontal (X) and/or vertical (Y)
directions. Values are from -3.0 to 3.0.
-
ITER
-
With this parameter, you can set fractal iteration,
repetition and so detail. Values are from 0.0 to
1000.0
-
CX; CY
-
With these parameters, you can change fractal
aspect, in the horizontal (X) and/or vertical (Y)
directions, except for Mandelbrot and Sierpinski
types.
-
Open; Reset; Save
-
With these three buttons, you can save your work
with all its parameters, open a previously saved
fractal, or return to the initial state before all
modifications.
-
Fractal type
-
You can choose what fractal type will be, for instance
Mandelbrot, Julia,
Barnsley or
Sierpinski.
-
Colors tab
-
This tab contains options for fractal color setting.
-
Color number
-
This slider and its input boxes allow you to set the
number of colors for the fractal, between 2 and 8192.
A palette of these colors is displayed at the bottom of
the tab. Actually, that's a gradient between colors in
fractal: you can change colors with “Color intensity
” and “Color function ” options.
Fractal colors don't depend on colors of the original
image (you can use a white image for fractals as well).
-
Use loglog-smoothing
-
If this option is checked, the band effect is smoothed.
-
Color density
-
These three sliders and their text-boxes let you set the
color intensity in the three
Red, Green and
Blue color channels. Values vary from
0.0 to 1.0.
-
Color function
-
For the Red,
Green and Blue
color channels, you can select how color will be treated:
-
Sinus: Color variations will be
modulated according to the sinus function.
-
Cosinus: Color densities will
vary according to cosinus function.
-
None: Color densities will vary
linearly.
-
Inversion: if you check this
option, function values will be inverted.
-
Color Mode
-
These options allow you to set where color values must be
taken from.
-
As specified above: Color values
will be taken from the Color density
options.
-
Apply active gradient to final image
: used colors will be that of active
gradient. You should be able to select another gradient
by clicking on the gradient source button.
-
Fractals tab
-
This tab contains a big list of fractals with their parameters,
that you can use as a model: only click on the wanted one.
The Refresh allows you to update the
list if you have saved your work, without needing to re-start
GIMP. You can delete the selected fractal from the list by
clicking on the Delete.
|
|
|
