home *** CD-ROM | disk | FTP | other *** search
- MANDELBROID VISITOR
-
- Make a quick visit to the Mandelbrot set and its variants with
- this program. The help screen below appears when you run the
- application and it returns if you press <ESC> and then <M>. The
- initial screen of each set is on the disc, but if you have removed
- the disc just answer <N> to the question "Is my disc in the drive?".
- This program is a "grubby task": it does not multi-task, it changes
- mode (to Mode 13), and it writes directly to the screen. There is
- no "boss key" but it WILL return you to the desktop.
-
-
-
- MANDELBROID VISITOR HELPSCREEN
-
- R RESET to default map which is saved as sprite
- S SAVE whole screen to disc
- * * command
-
- 1-7 Alternative displays -- try them
- L Increase iteration LIMIT -- takes LONGER
-
- J JUMP to a Julia set (select with middle mouse button)
- I INPUT Julia set co-ordinates (Press <RETURN>s for default)
- M Return to MAP (from Julia)
-
- Z ZOOM with mouse on map or Julia
- adjust size with left and right buttons, select with menu
- U Zoom back UP somewhat (no mouse)
- G GOTO map co-ordinates (Pressing <RETURN>s resets to default)
-
- ESC Stops plotting and restores control to you
- ESC When not plotting, asks you to press
- M for main menu (this screen)
- Q to quit
- any other key to continue
-
- Mandelbroids available:
- 1) Original Mandelbrot
- 2) Self-Squared Dragons
- 3) Cubic Mandelbrot
- 4) Quartic Mandelbrot
- 5) Bruce Ikenaga's Function (Dewdney, Armchair Universe)
- 6) Shigehiro Ushiki's Phoenix (Stevens, Fractal Programming in C)
-
- The mathematics of these functions are discussed in a text file called
- "Maths", in the directory !FracVisit. See also PROCidentify in !RunImage.
-
- If you have a version without the initial screens, or if you wish to
- change the initial parameters, run the program from Basic instead of
- the desktop, escape when the first screen has been drawn, *screensave
- it, and then in PROCidentify set mapped=TRUE, and set File$ and
- Filesprite$ to agree with the name of the spritefile and sprite.
- Note that there is a line which resets File$ to <FracVisit$Dir>+File$.
-
- !FracVisit v1.07 3 December 1991
-
-
-
- MANDELBROID BASINS
-
- Also in this directory is a program called FracBasins. It uses many
- of the same commands as FracVisit, but also shows the actual
- Z-trajectories or orbits of each point plotted.
-
- A terse version of the help screen below appears when you run the
- application. The later on-screen help (as appears in !FracVisit)
- is minimal. Bugs are everywhere. This is a preleminary version.
-
- HELP SCREEN
-
-
- R RESET to default map which is saved as sprite
- S SAVE whole screen to disc
- * * command
- 1-9 Alternative displays -- try them
- L Increase iteration LIMIT -- takes LONGER
- I INPUT Julia set co-ordinates (Press <RETURN> for defaults)
- M Return to MAP (from Julia)
- Z ZOOM with mouse on map or Julia
- adjust size with left and right buttons, select with menu
- U Zoom back UP somewhat (no mouse)
- G GOTO map co-ordinates (Pressing <RETURN> resets to default)
- ESC Stops plotting and restores control to you
- ESC When not plotting, quits program
-
- J JUMP to a Julia set or display orbits
- SELECT Show orbit of point
- ADJUST Plot Julia set at point with orbit of critical point:
- The first 128 iterations of (0,0) are shown, and then
- overplotted by the Julia. Then iterations 65-128 of (0,0)
- are re-plotted. This image is saved as a sprite.
- MENU Plot Julia set without orbit (hasty)
- 0 Show all 128 iterations of (0,0)
- P PLOT orbits as POINTS
- D DRAW lines between the points (future iterations)
- C CLEAR the screen of rubbish
-
- * * * * * * * * *
- When you have zoomed into a fractal, the orbit of the points
- on screen may be a long way off screen, and the error "Number
- too large at ..." has not been trapped. If you choose a point with
- SHIFT-SELECT the program will attempt to show the orbit as it would
- appear on the un-zoomed Julia. HOWEVER, no guarantees are made.
- * * * * * * * * *
-
-
- !FracVisit v 2.03 3 December 1991
-
-
- These programs would not exist without:
-
- Fractal Report, John de Rivas, RTL Ltd.,
- West Towan House, Porthtowan, Cornwall TR4 8AX
- and
- Archimedes Fractal Group, Mike Curnow,
- 80 Bowen Drive, West Dulwich, LONDON SE21 8PN
-
- The programs may be freely circulated so long the appropriate
- acknowledgements are made. It must not be sold for profit.
-
- Please send any improvements, comments or chat (with an ssae and
- perhaps even a disc of PD software, games, images, fractals...) to
- JOYCE HASLAM, 112 Keighley Road, Colne, Lancs. BB8 0PH
-
-
-
-
-