3 – 30 Programming
Notice that the angle is steeper and the two lines are closer together. This
is because each individual column now overlaps the next one. Notice
also that it prints more slowly, although with this amount of printing the
difference in speed may be hard to detect.
Now try double density, normal speed (ESC Y):
30 LPRINT CHR$(27);CHR$(89);CHR$(11);CHR$(0);CHR$(1);
CHR$(2);CHR$(4);CHR$(9);CHR$(18);CHR$(36);CHR$(72);
CHR$(144);CHR$(32);CHR$(64);CHR$(128)
Aside from printing speed, there should be no difference, because the
pattern does not include adjacent dots; if it had, some dots would have
been skipped.
Finally, try quadruple density (ESC Z):
40 LPRINT CHR$(27);CHR$(90);CHR$(11);CHR$(0);CHR$(1);
CHR$(2);CHR$(4);CHR$(18);CHR$(36);CHR$(72);
CHR$(144); CHR$(32);CHR$(64);CHR$(128)
Compare the results:
The angle is even steeper, and the two lines have merged into one thick
line because of even greater overlap.
