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Barnsley Fern
Craige_Hales
Super User Craige_Hales
Super User
Created: May 10, 2015 06:51 PM  |  Last Modified: Nov 17, 2016 12:52 AM
Fern.jsl
FernFaster.jsl

The JSL (attached, below) for this is deceptively simple.  It took me a long time to understand how the recursion happens.  It generates a million points--give it a minute or so.


update: faster version attached.


Barnsley fern - Wikipedia, the free encyclopedia


8762_FernGraph.png


If you are trying to understand the recursion, set the right-click->graph->marker-drawing-mode to fast, clear the row-states, and select the first row in the data table.  A single bright point will be at 0,0 at the bottom of the stem.  As you select subsequent rows, you can watch the "F" column to see what transform is about to happen.


8763_FolowRecursion.png

Fern ForestA video

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