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Diffstat (limited to 'help/rest/maxiter.txt')
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diff --git a/help/rest/maxiter.txt b/help/rest/maxiter.txt new file mode 100644 index 0000000..2cb56fa --- /dev/null +++ b/help/rest/maxiter.txt @@ -0,0 +1,30 @@ +.. _maxiter: + +.. index:: + pair: menu item; Iterations + pair: command line option; maxiter + pair: command; maxiter + +Iterations +========== + +**Syntax**:(maxiter integer) + +When the fractal set is calculated, a orbital trajectory is examined for each +point. If the orbit diverges to infinity, the point is outside the set. +Otherwise, the point is inside the set. For exact calculations, you need to +know the entire orbital trajectory, which is infinitely long for areas inside +the set, so fractals cannot be calculated exactly. By default, XaoS calculates +at most 170 positions (iterations) and then gives up; if the point is still +inside the bail-out value, it guesses that the point is inside the set. + +When zoomed into a detailed area, especially one close to the set boundary, +this value could become too low, and the fractal will become boring. You might +try increasing this value if you want to get the image interesting again; but +this necessarily slows down the calculation at the same time. + +The tutorial chapter ":tutor:`Escape time fractals <escape.xaf>`" has +more information on fractal calculation in XaoS, and there is a lengthy section +in the hacker's manual (xaosdev.texinfo) devoted to the subject. + +**Available as**: menu item, command line option, command |