First Version Of 3D Program - Epson FX Series User Manual

A very few pin patterns are needed for this program. In fact, each
"pattern" consists of only one pin, making the numbers easy
to calculate:
1
64
1, 2, 8, 16, 32, 64 for the diagonal rise
4,
64,
32, 16, 8, 4, 2, 1
As you will see in the next few pages, these pin patterns are coded
right into the program. You'll only need to store as data the number of
repetitions for the low and high sections.
A close look at Figure
produced by repeating a 4-step pattern:
Fire the bottom pin (pin
1.
Draw a diagonal rise (pins
2.
3. Fire the top pin (pin 64), repeat H times.
Draw a diagonal fall (pins
4.
This pattern is repeated several times. Printing the figure is mainly a
matter of reading the length of the low and high sections, then printing
the four-part cycle.

First version of 3D program

We have you enter this program in portions that are easy to discuss
as units, so please don't try to RUN it until we give the word.
Might as well start off with the easy stuff. Set the line spacing for
pin graphics:
NEW
l0 LPRINT CHR$(27)"1"
Note: If your system leaves gaps in 7-dot graphics printing, you will
prefer to use the
"3'CHR$(20).
Next up are the three straight lines at the start of the design. There's no
need for anything fancy-just a single dot printed across the page. For
that, add these lines (lines
20 G$=CHR$(27)+"L"+CHR$(51)+CHR$(3): GOSUB 160
150
LPRINT CHR$(27)"@": END
160
FOR X=1 TO
for the low pin
for the high pin
for the diagonal fall
reveals that most of the lines can be
12-4
repeat L times.
1),
1 - 64).
64
- 1).
6-2/3-dot
and
20 170
3:
LPRINT G$;
line spacing,
are different for the
7-
CHR$(27)
FX-100):
165