The Graphics used in Thomas Christopher's pages
About the fractal fern
The fractal fern is created by recursively drawing the picture that appears
in the whole frame in each of the frames outlined in red. To start, a line is drawn from
the upper left corner to the shared corners of the three red boxes. Then, that line must
be drawn recursively in each of the boxes. Since each of those lines is in the overall
frame, those lines themselves must be drawn in each of the boxes. And so each line drawn
results in three more lines being drawn, and each of them requires three more, down to the
level of pixels, where we stop.
The graphics and the programs that generate them
Here are the fractal fern and the other graphics and the programs that generate them.
To run these programs, you will need to have a version of the Icon programming language
with graphics, e.g. 9.1. You can get it from The
Icon Project.
