Resizing for quality printing

Resizing based on screen dimension

In Fraxion, it is possible to directly specify the screen size. This can be done via the Specify screen size option in the Navigation menu. You can explicitly set the width or height expressed in pixels, or select from a preset going from QVGA to WHQD. If the selected size is larger than the size of the application's window, then the GUI automatically adds scrollbars to navigate around the complex plane.

If the Use physical window size button is clicked, then the width and height are automatically determined to fit within the visible window on screen, taking into account small margins.

With Fraxion you can also store up to six memory presets that contain width and height information for easy reference. There are also two handy buttons for quickly halving or doubling the current size.

Note that the required memory is estimated (in Mebibyte) after selecting a paper size; it is displayed in red if there is not enough memory available. The memory usage takes into account all space necessary for storing all the detailed iteration results, as well as the image buffers for coloring.

Resizing based on paper size

You can also specify a target paper size, either as an explicit width and height expressed in millimeters, or selecting the size from a preset ranging over DIN A7 to DIN A0, DIN B7 to DIN B0, and Letter and Ledger/Tabloid. The orientation can either be portrait or landscape.

In addition, it is also necessary to specify a resolution, expressed in pixels-per-inch (PPI), selectable from 72, 96, 150, 300, 600, or 1200 PPI.

A note on floating-point precision

Each time you zoom further into the various areas in the fractals' complex domains, Fraxion keeps track of the current zoom level and advises on its accuracy. Because Fraxion uses 64-bit IEEE 754 floating point calculations, there is an inherent upper limit to the visual accuracy that is attainable. For Fraxion, that limit lies around zoom levels approaching 1E-15, as shown in the following successive zooms around the point z = -1.8 + 0 i.

Radius = 1E-12
Radius = 5E-13
Radius = 1E-13
Radius = 5E-14
Radius = 1E-14
Radius = 5E-15
Radius = 1E-15

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