home *** CD-ROM | disk | FTP | other *** search
- GRAF-PIX
-
- A Graphics Creating Program
- By Read G. Gilgen
- U. W. Labs for Recorded Instruction
- Madison, WI 53706 (608) 262-1408
- (c) 1982 by the Board of Regents
- University of Wisconsin System
-
- GRAF-PIX is designed to help create graphic designs, pictures,
- charts, etc. and requires little training on the part of the
- user. The program uses straightforward commands to allow use of
- the special graphics commands available in the IBM-PC Advanced
- BASIC language. Pictures can be saved on diskette, edited, and
- (with a graphics dump) be printed on a dot-matrix printer.
-
- GRAF-PIX may be copied and distributed, providing that the
- copyright information and credits are not changed. Changes in
- the program may be made. Suggestions or comments may be directed
- to the author.
-
- GRAF-PIX requires one disk drive and the color-graphics adapter
- with at least a black & white monitor. If you are interested in
- color illustrations as a final product, use a high resolution
- color monitor if possible. If you use a low resolution color
- monitor, try GRAF-PIX.2X, which may avoid low resolution problems
- such as loss of parts of the lines being created, or problems
- with colors. If you are primarily interested in printed copies
- of your graphic illustrations, the monitor will have no effect
- on the final product, and a black and white monitor (which is
- usually high resolution) may actually be preferable to a low
- resolution color monitor.
-
- PROCEDURES
-
- 1. Before beginning, you should have the Graf-Pix program disk
- and another IBM-formatted diskette for storage of your graphics
- creations.
-
- 2. To begin the GRAF-PIX program, simply insert the program disk
- in drive A and turn the system on (or press CTRL-ALT-DEL). In a
- moment the program will appear and you will be asked to specify:
-
- 1. Edit an existing graphics file
- 2. Create a new graphics file
- 3. Delete a graphics file
- 4. Print the Graf-Pix documentation
- 5. Exit from Graf-Pix
-
- If you have a picture on disk that you wish to edit, make sure
- that the proper diskette is in drive "A" and press number 1. If
- you want to create a new picture, specify the filename (up to 8
- characters) and the extension ".grf" will be added. The disk
- that will hold the new picture should also be in drive A,
- although nothing will be saved until later.
- 3. Once you have specified the picture file, the screen will
- clear (if you are editing, the picture to be edited will appear),
- and you will be ready to begin.
-
- The pictures are created by using a cursor which moves in eight
- directions (up, down, left, right, and diagonally). When you
- begin, the cursor is located in the center of the screen and can
- be moved by pressing the cursor keys on the numeric keypad:
-
- Cursor Arrows = left, right, up, down
- Home = up and left
- PgUp = up and right
- End = down and left
- PgDn = down and right
-
- As you move the cursor, a "rubber-band" line is created with each
- move. This tells you where the cursor began, and where you are
- currently. To erase the line, or to draw the line permanently,
- you may use function keys F9 or F10 (explained below).
-
- Several keys have been designated to assist in the graphics
- creation process. They are:
-
- F1 HELP Press this key to see a list of function
- keys on the bottom line of the screen.
- Since only 5 keys can be displayed at
- one time, you may press the F1 key again
- for additional keys. Press it again and
- and the list will be cleared from view.
- It is not necessary to display the HELP
- list in order to activate the function
- keys; they are active at all times while
- in the editing mode.
-
- F2 CLR Use this key to change the color of the
- line. You may also follow the prompts and
- change the palette of colors available as
- well as the background color. The lines
- and area colors are as follow:
- Palette 0: 1 Green 2 Red 3 Brown/Yellow
- Palette 1: 1 Cyan 2 Magenta 3 White
- Any background color from 0 to 15 may be
- chosen. 0 is black, 1 is blue, 9 is bright
- blue, etc. Some colors are not good for
- background, since lines and text can't be
- seen well with them.
-
- NOTE: Default colors are black background
- (Color 0) and palette 1, since these are the
- combinations which work best on all types of
- monitors. If you have a low-resolution monitor,
- you will have particular problems with palette 0
- and with the vertical lines in palette 1.
-
- \
- For example, vertical white lines are actually
- alternately red and blue, yet two such lines next
- to each other appear white.
-
- Also, angled or horizontal lines may appear to be
- producing every other dot, and some vertical lines
- may appear not to be producing anything at all.
- Nevertheless, all lines and dots are indeed being
- produced and will still function as borders for
- filled areas
-
- F3 CIRCLE This key allows you to create circles,
- using the current cursor position as the
- center of the circle. You will be prompted
- on the bottom line for such information as
- radius size, full or part circle, and normal,
- tall, or flat aspect. If you specifiy
- partial circle, you will be asked for the
- beginning and ending points. Any number
- between 0 and 2 may be entered for these
- points, but the circle is drawn counter-
- clockwise beginning with the lower number and
- ending with the higher number. If you want
- radius lines drawn, you may specify that too.
-
- F4 AREAFILL This option allows you to fill in any enclosed
- area with one of three colors from the current
- palette, plus the background color. If the area
- is already filled with color 3 (white or brown/
- yellow) this option will have no effect. The
- cursor must be within the area to be filled, and
- there must be no holes in the boundaries, or
- else the entire screen will be colored in!
- Also, if you do not properly specify the boundary
- color, the entire scree may be colored in and
- the picture you are working on will be destroyed!
- The line color changes automatically to that of
- the filled area to make for easy exit from the
- area. Line color may be changed with the F2 key
- (see above.)
-
- F5 TEXT If you want to type text in your picture,
- simply position the cursor just below where
- you want to start, and press F5. Then type
- your text and press <ESC> or <ENTER> to
- return to the graphics process. Note that
- you may only type on the one line that you
- are on. If you wish to type more than one
- line, you must press <ESC>, reposition the
- cursor, and press F5 again. The graphics
- cursor does not move while you enter text.
-
-
-
- \
- F6 BOX You can make boxes by moving the cursor from
- one corner of the box location diagonally to
- the opposite corner, and then pressing F6.
- You will then have the choice of a line box,
- or a box filled with white (or brown/yellow).
- To fill a box with another color, draw the box
- alone, and then fill it with the F4 key option.
-
- F7 CURSOR The "rubber-band" cursor normally moves six
- dots at a time in the specified direction.
- If you want to move only one dot at a time,
- press F7. If you want to resume with 6 dots
- at a time, press F7 again. Using this key one
- dot at a time can be very useful for filling in
- missing dots, for creating intricate details, or
- for "erasing" segments of your picture by moving
- the "rubber-band" line across it.
-
- F8 ENDPGM This key allows you to end the program, by
- letting you save the work you have done,
- print the picture you are working on, or
- ending without saving or printing anything.
- If you accidentally hit F8, you may return to
- the editor by pressing <ESC>. The PRINT
- option works only if you have a graphics
- screen dump on the GRAF-PIX program disk.
- When you select this option, it first saves
- the picture, then send you to DOS to run your
- graphics dump. You must reboot or (from DOS)
- type GP to return to the Graf-Pix program.
-
- F9 ERASE This will be one of the most used keys, since
- it erases the line being created by the
- "rubber-band" cursor, and sets a new starting
- point for the cursor. This key allows you to
- move the cursor to whereever you want to
- create your graphics, text, etc.
-
- F10 LINE If you want to draw the "rubber-band" line
- permanently, then press F10. The cursor then
- begins where you left off and you can proceed
- from there. You may change the color of the line
- by using the F2 option before pressing this key.
-
-
-
-
-
-
-
-
-
-
-
- \