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Why is my printing so jagged?
- To: email@example.com
- Subject: Why is my printing so jagged?
- From: firstname.lastname@example.org (Rob Browning)
- Date: Fri, 3 Mar 1995 02:32:07 -0600
- Sender: email@example.com
I have a routine that graphs a line by "connecting the dots" using a
#_MoveTo and #_LineTo for each segment. While this looks fine on screen,
when I print it to a laserwriter (using print-u.lisp and letting the driver
handle Quickdraw->PostScript translation) it looks ugly. The line is very
lumpy even though I know that the endpoints of adjacent segments are on top
of one other.
Why is this, and is there a straghtforward fix?
I want to remain as print driver independent as possible because this
program needs to be able to print to laser printers, inkjets and most
importantly, Calcomp plotters.
(An aside: I was looking through the info in IM:Imaging and I was stunned
by how poorly abstracted the printing vs screen drawing issues were. I
couldn't believe that you have to write driver specific code for something
as simple as a thin line. Why wouldn't there be a standard call for this
such that the screen or the print driver (speaking whatever language to the
printer) approximates it as best it can?)