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- Draw Newton Version 1.0
-
- Shareware Written by Dungeon Master Jim
-
- Copyright (c) 1990, James E. Adams, Jr.
-
- All Rights Reserved
-
- INTRODUCTION
-
- Come journey into a world of the infinitely complexity and,
- yet, supremely ordered. Explore the strange and wonderful
- land of FRACTALS with the program DRAW NEWTON and be ready
- for hours of wonder and entertainment! DRAW NEWTON lets you
- create stunning IIgs super hires graphics through the
- familiar desktop metaphor. There is no need for you to be
- concerned with any calculations, just point with the mouse
- and watch the journey unfold!
-
- USING DRAW NEWTON
-
- You must have a Floating Point Engine (FPE) card in slot 3
- of your IIgs for this program to work. If you do not, DRAW
- NEWTON will probably crash miserably. The FPE card may be
- purchased from Innovative Systems, P.O. Box 444, Severn, MD
- 21144-0444. It is a math coprocessor which can provide
- tremendous speed up of floating point calculations.
-
- Once DRAW NEWTON is launched, you will want to select Open
- under the File menu and open Newton000.Pic. This is the
- beginning picture for our travels. If you do not have
- Newton000.Pic, then simply select Draw Picture under the
- Options menu, and Newton000.Pic will be drawn for you. When
- it is complete, press a key and then select Save under the
- File menu and use the default file name of Newton000.Pic.
-
- If you wish to look at Newton000.Pic for a while, select
- Look at Picture under the Options menu. When you a through
- viewing the picture, either press a key or click the mouse
- to return to the desktop.
-
- Now, to draw a new picture! Select Set Zoom Window under the
- Options menu. Once you see Newton000.Pic again, decide which
- portion of the picture you would like to zoom into. One of
- the buds along the colored boundaries is always interesting.
- Move the mouse so that it is pointing to the upper left hand
- corner of the region you want to blow up. Then press down
- and hold the mouse button and drag the pointer to the lower
- right hand corner of the region you have in mind. Note that
- a "rubber band" rectangle will outline this zoom window you
- are selecting. When you have outlined the area you want,
- release the button. You will instantly return to the
- desktop.
-
- From the desktop, select Draw Picture from the Options
- window and watch your new picture come to life! Typical
- drawing times are from 10 to 15 minutes with a Transwarp GS
- running at top speed. When the picture is complete, either
- press a key or click the mouse to return to the desktop.
-
- You may save your new picture by selecting Save under the
- File menu.
-
- If you want to experiment, select Turn Binary Phase On under
- the Options menu and then select Draw Picture to draw a new
- picture. You may save this new picture by repeating the
- steps from the previous two paragraphs.
-
- At this point, you may select Set Zoom Window again and zoom
- into your new picture some more. In future sessions, you may
- Open any picture you have previously drawn with DRAW NEWTON
- and zoom into it. One of the uncanny things about this
- fractal is that the more you zoom in, the more detail you
- reveal!
-
- HOW DRAW NEWTON WORKS
-
- DRAW NEWTON lets you explore the algorithm (a kind of
- mathematical recipe) called Newton's Method for finding the
- roots of the equation
-
- P ( z ) = z ( z - 1 ) ( z + 1 ).
-
- This equation has three roots, z = 0, z = 1 and z = -1. A
- root is a value that makes the whole equation equal to zero.
- Each point on the screen is taken as a starting point for
- this algorithm. If the algorithm eventually finds the z = 0
- root from the starting point, that point on the screen is
- colored blue. If the z = 1 root is found, the point is
- colored yellow. Finally, if the z = -1 root is found, the
- point is colored red.
-
- Sometimes it takes longer to find a root starting from one
- point than it does starting from another point. In that
- case, the shade of the color is changed to show how long it
- took to find the root. Since only four shades of each color
- are used for this purpose (we are limited by the IIgs color
- palette), we start over with the first shade after we have
- finished using the fourth and keep repeating the cycle of
- four shades for each color.
-
- DRAW NEWTON stores the pictures in as file type PIC ($C1)
- files. They are 65 blocks long and can be loaded into
- probably any other IIgs graphics program you could find. If
- you do load them into another program, such as Paintworks
- Plus, to change colors or add your initials, be aware that
- the new picture you save from Paintworks Plus will no longer
- work right with DRAW NEWTON. DRAW NEWTON stores some
- important (but boring) information in the unused color
- palettes of the picture file. Paintworks Plus changes these
- values.
-
- This important, boring information lets DRAW NEWTON know
- which zoom window you selected to draw the picture with.
- This allows DRAW NEWTON to let you zoom into the picture
- again. If the zoom window information is changed, your
- picture is still perfectly good. You just will not be able
- to zoom into it anymore.
-
- When you select Draw Picture from the Options window, DRAW
- NEWTON calculates the values for the new picture using
- direct access calls to the Floating Point Engine. This is
- basically the fastest way to make these calculations. You do
- not need to have the file FPE.INIT.S3 in your
- System/System.Setup folder of your boot volume. (There are
- some bugs in this file, anyway.)
-
- Selecting Turn Binary Phase On from the Options window, adds
- one more check to the calculations. If this check is true,
- then a special dark shade of the appropriate color is used
- to color the point. If not, the shade calculated by the
- regular means is used. Note how these dark patterns always
- split into two as you move from one lighter shade of color
- to another.
-
- SHAREWARE INFORMATION
-
- Please note that DRAW NEWTON is Shareware and not Freeware,
- Public Domain or Vaporware. Feel free to distribute copies
- of this package to all of your friends and family and upload
- to any bulletin board that you wish!
-
- If you like this program and wish to encourage the creation
- of further IIgs fractal software, please send $10 to:
-
- Jim Adams
- 16 West Forest Drive
- Rochester, NY 14624-3760
-
- In return for your money, I will send you the latest version
- of DRAW NEWTON and as many of my super hires fractal
- pictures as I can fit on the disk! (I have several disks
- filled with packed pictures from DRAW NEWTON and other
- programs I have written, so there is a lot to choose from.)
-
- If you have any comments, questions or ideas, please feel
- free to contact me on GEnie (J.ADAMS23).
-
- Have fun!
-
- Dungeon Master Jim
-
- 26 August 1990
-