Customizing the image

Fractal types

The fractal type button icon indicates the current fractal type (eg. for Mandelbrot). When the current fractal type is a custom one, the formula icon is displayed. Use this button to show the fractal types list with the currently used type selected.

Use tabs to switch between built-in fractal types and your custom ones. Tap a fractal type to choose it. The app will restore the last spot visited in it.

Built-in fractal types supporting Deep zoom are labeled deep on the right.

Use the add button on the Custom tab to create your custom fractal type.

Long press a fractal type to display its context menu with the following options:

View definition View a definition of the built-in fractal type.
Edit Edit your custom fractal type. This may affect your favorite spots using it.
Share Share your custom fractal type.
Clone Create a new custom fractal type by cloning the definition of the selected one.
Clone as advanced Create a new Advanced definition custom fractal type by cloning the selected simple definition fractal type.
Delete Delete the custom fractal type. Your favorite spots using this fractal type will be also deleted.
Create thumbnail Create a thumbnail for your custom fractal type based on the current image (which must use this fractal type). You may later change the thumbnail by using this option again.

Color palettes

Change a palette to use another color scheme at the same spot.

Use the palette button to show the palettes list with the currently used one selected.

Use tabs to switch between built-in palettes and your custom ones. Tap a palette to choose it. The app will apply the selected palette without recomputing the whole image.

Use the add button on the Custom tab to create your custom palette.

Long press a palette to display its context menu with the following options:

Edit Edit your custom palette. This may affect your favorite spots using it.
Share Share your custom palette.
Clone Create a new custom palette by cloning the definition of the selected one.
Delete Delete the custom palette. Your favorite spots using this palette will be changed to use a default one.

In the Advanced mode, the palette button is not visible. Use the magic wand button instead to enter the Advanced image control screen.

Paint modes

Change a paint mode to reveal new patterns at the same spot.

Use the brush button to show the paint modes list with the currently used one selected.

Use tabs to switch between built-in paint modes and your custom ones. Tap a paint mode to choose it. The app will restart rendering the image.

Use the add button on the Custom tab to create your custom paint mode.

Long press a paint mode to display its context menu with the following options:

View definition View a definition of the built-in paint mode.
Edit Edit your custom paint mode. This may affect your favorite spots using it.
Share Share your custom paint mode.
Clone Create a new custom paint mode by cloning the definition of the selected one.
Clone as advanced Create a new Advanced definition custom paint mode by cloning the selected simple definition paint mode.
Delete Delete the custom paint mode. Your favorite spots using this paint mode will be changed to use a default one.
Create thumbnail Create a thumbnail for your custom paint mode based on the current image (which must use this paint mode). You may later change the thumbnail by using this option again.


An example result of applying Stripes paint mode to a Phoenix fractal zoom.

In the Advanced mode, the brush button is not visible. Use the magic wand button instead to enter the Advanced image control screen.

Image filters

Give a final touch to your fractal image by applying an image filter.

Use the image filter button to show the filters list with the currently used one selected.

Tap a filter to choose it. The app will apply the selected filter without recomputing the whole image.


An example result of applying Light image filter adding 3D-effect to a Newtonbrot fractal zoom.

In the Advanced mode, the image filter button is not visible. Use the magic wand button instead to enter the Advanced image control screen.

Using the scrollbar

Use the scrollbar to interactively change the image parameters. When no parameters are available the scrollbar is hidden and you can see only its menu button .

You may customize the scrollbar's orientation using the Settings / Appearance Scrollbar orientation option.

The name and value of the currently active parameter are displayed in the scroll bar. You may change the value by dragging the scrollbar thumb, tapping the scrollbar, tapping or long-pressing scrollbar arrow buttons.

You may also long-press the thumb to show a popup dialog allowing you to input the desired value using the keyboard. Long press the scrollbar menu item to input a parameter value without switching to this parameter.

The image is adjusted on the fly. Palette length/offset and filter parameters changes are applied without recomputing the whole image. In the other cases the app restarts image rendering and image quality may be reduced until you stop changing the parameter value.

In the Advanced mode, the thumb displays an icon showing whether the current parameter concerns a fractal interior or exterior .

Tap the scrollbar menu button to show a menu containing available parameters with their values and additional options for customizing the image. The currently active parameter is highlighted. The menu content depends on the selected fractal type, paint mode, and image filter. It is organized in sections described below.

Fractal parameters

The section header displays the current fractal type name and its icon. The section contains the following items:

Julia mode Use this checkbox to turn Julia mode on and off (available only in the Advanced mode).
Julia X Julia mode X parameter (visible only in Julia mode).
Julia Y Julia mode Y parameter (visible only in Julia mode).
Fractal parameters A menu item for each fractal type parameter (visible only if the current fractal type has any parameters). After you change the value of the parameter, the app automatically sets the default coordinates and zoom to display the entire picture of the changed fractal. You may turn this off using the Settings / Behavior Reset coordinates on parameter change setting.
Iteration limit Use this parameter to control the Iteration limit (available only in the Advanced mode).
Detail level An alternative way to control the iteration limit in the Advanced mode. Only one of these two items (Interation limit, Detail level) is visible at a time.
Switch to iteration limit Switch from controlling the detail level to controlling the iteration limit (visible only in the Advanced mode when the Detail level control is active).
Switch to detail level Switch from controlling the iteration limit to controlling the detail level (visible only in the Advanced mode when the Iteration limit control is active).
Set coordinates Show a pop-up dialog for changing coordinates and zoom factor. In the Deep zoom, this feature may be not quite useful due to possible loss of coordinates precision.
Reset fractal Restore the default values of all the parameters. This includes setting the default coordinates and zoom factor for the current fractal, default paint modes (Default exterior and Solid interior for most fractal types), default palettes, no image filter.


An example result of changing the iteration limit.

Paint parameters

In the Advanced mode, there are two separate paint mode menu sections. One is for the fractal interior paint and the second for the fractal exterior paint. They are marked by icons: for the interior, and for the exterior.

The section header displays the current paint mode name. The section contains the following items:

Paint mode parameters A menu item for each paint mode parameter (visible only if the current paint mode has any parameters).
Palette length Use this parameter to change the length of the color cycle within the range of [1e-28, 1e+28]. For this parameter, the scrollbar uses a logarithmic scale and only part of the range is visible at once (3 orders of magnitude, e.g. [0.1, 100]). After moving the scrollbar's thumb near the end of the scrollbar and releasing it, the visible range is automatically adjusted to allow further change. This parameter is not visible when Auto adjust is turned on.
Palette offset Use this parameter to shift the color cycle without changing its length. This parameter is not visible when Auto adjust is turned on.
Auto adjust Use this checkbox to turn automatic palette length adjusting on and off. When it is turned on, the app automatically sets the palette length and offset to cover most of the image with one palette cycle, starting from the beginning of the palette.
The exceptions are Default and Classic paint modes for which the adjusted palette cycle always spans from the lowest visible iteration count value to the iteration limit.
Adjust once Use this option to let the app to automatically adjust the palette length and offset once. This option is not available when Auto adjust is turned on.
By default, this action is also performed by the app when you change the paint mode, but you can turn it off using the Settings / Behavior Palette adjusting option.


An example result of changing the palette length.

Image filter parameters

The filter parameters section is visible only if the current image filter has any parameters. The section header displays the current filter name. The section is visible only if the current filter has any parameters.

Filter parameters A menu item for each image filter parameter.
Reset filter Restore default values of the current filter parameters.


An example result of changing image filter parameters.

Scrollbar fine-tuning

You can get very precise control over the parameter value by moving your finger away from the scrollbar as you drag the scrollbar's thumb. The farther you move your finger, the more precise the control is, and the narrower the thumb is displayed.


The scrollbar in the normal mode (on the top) and the fine-tuning mode (on the bottom).

Touch the scrollbar's thumb and quickly move your finger away from the scrollbar to continue fine-tuning. The app will not change the parameter value during that quick move.

Smart scrollbar switching

After some user actions, the application switches automatically the active parameter to the one that can be most useful in a particular situation. This includes:

You can turn this off using the Settings / Behavior Smart scrollbar switching option.

Randomizer

Use the Randomizer button to randomly change the image.

Long press the button to enter the Randomize setup menu where you can choose the draw scope.

Location Randomly choose a location from the built-in examples and your favorites. If unchecked, the selected changes are applied to the current spot.
Image filter Randomly choose an image filter.
Paint mode Randomly choose paint modes (both for the fractal exterior and interior).
Palette Randomly choose color palettes (both for the fractal exterior and interior).

Tap the OK item or tap outside of the menu to save your changes and close the Randomize setup.