fractal(1A) MISC. REFERENCE MANUAL PAGES fractal(1A)
NAME
fractal, julia - Display Mandelbrot and Julia sets on Amiga
Unix /dev/screen device
SYNOPSIS
fractal fractal [-julia] [x [incx [y [incy [p [q [attr
[esc]]]]]]]]
julia [x [incx [y [incy [p [q [attr [esc]]]]]]]]
DESCRIPTION
fractal Opens the largest possible screen on the default
monitor under /dev/screen. It then proceeds to display a
Mandelbrot (or Julia) set for the current coordinates.
MOUSE BUTTON HACKS
To zoom into the fractal drag the mouse will the left mouse
button held down. This will zoom to the square you speci-
fied. Use the ESC key if you accidently get into this mode
and don't wish to zoom.
To zoom out of the fractal drag the mouse will the right
mouse button held down. This will place the top left (and
bottom right) pixel of the entire screen at the top left
edge (bottom right edge) of the box you pick and redraw the
fractal. Use the ESC key if you accidently get into this
mode and don't wish to zoom.
By default dragging can only be done be square-like boxes
and from the center of the point you dragged from.
You can use the SHIFT modifier key to drag from one of the
corners.
You can use the CTRL modifier key to drag non-square pat-
terns. Be aware that dragging non-square zooms will distort
the fractal somewhat.
KEY HACKS
q Quit fractal.
ESC Quit a zoom grab.
c Change the color map. See the section COLORS for more
information.
j Redraw the Julia Set that corresonds to the position of
the pointer. (only valid while drawing a Mandlebrot
Set).
m Redraw the Mandelbrot Set that corresonds to the posi-
tion of the pointer. (only valid while drawing a Julia
Sun Microsystems Last change: 1
fractal(1A) MISC. REFERENCE MANUAL PAGES fractal(1A)
Set).
w Write out a gif file of the current screen (named
./fracN.gif). Someday I'll fix this.
COLOR
While in color mode you can use the pointer to click on one
of the 16 color map entries and change their corresponding
color by moving the sliding gadgets at the bottom of the
screen that correspond to red, green, and blue color inten-
sities. Use the Return Key to return the fractal with the
new colors installed. Use ESC or `q' to abort.
NOTES
Fractal has a poor user interface. If you'd like to work on
it--do it. Please send me any hacks you have for it.
AUTHOR
Keith M. Gabryelski (ag@amix.commodore.com)
Sun Microsystems Last change: 2