Bug 690833 - bad advance rounding
Summary: bad advance rounding
Status: NOTIFIED WONTFIX
Alias: None
Product: GhostPCL
Classification: Unclassified
Component: PCL interpreter (show other bugs)
Version: master
Hardware: Macintosh MacOS X
: P2 normal
Assignee: Henry Stiles
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-10-20 09:01 UTC by Henry Stiles
Modified: 2011-09-18 21:46 UTC (History)
0 users

See Also:
Customer: 861
Word Size: ---

Attachments
metrictest_public.pcl (9.32 KB, application/octet-stream)
2009-10-20 09:03 UTC, Henry Stiles 		Details
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Description Henry Stiles 2009-10-20 09:01:11 UTC 
The Artifex PCL interpreter fails to properly emulate HP's advance width when
rendering fonts of very small point size.
Comment 1 Henry Stiles 2009-10-20 09:03:20 UTC 
Created attachment 5509 [details]
metrictest_public.pcl

A test of 79 8 point fonts and a superimposed grid.
Comment 2 Henry Stiles 2009-10-21 08:59:05 UTC 
Note the test is somewhat confounded by HP's use (at least on the HP 4600) of
the small tilde (code point U+02DC) instead of tilde (code point U+007E) for the
second to last character in each line.  We consider this too "wrong" to emulate,
so to use the test to check the spacing of characters disregard the last 2
characters on each line.
Comment 3 Henry Stiles 2009-10-21 14:50:56 UTC 
Comment #2 should be discarded the tilde characters were incorrect and have been
fixed in revision 10206.
Comment 4 Henry Stiles 2009-11-20 08:20:57 UTC 
At present I don't see a good solution to this problem without radically
changing the pcl font rendering machinery.  We note the problems are quite
minor.  This bug will likely be resolved as "WONTFIX".
Comment 5 Masaki Ushizaka 2009-12-18 04:01:05 UTC 
Can you tell me from the customer's which report this bug was opened?  I need to communicate with the 
customer.
Comment 6 Masaki Ushizaka 2009-12-21 04:05:49 UTC 
This is FTS5C 0010-054, page 3.
Comment 7 Henry Stiles 2010-02-23 14:49:53 UTC 
Documented in pcl Anomalies.txt - see item 54:
Comment 8 Marcos H. Woehrmann 2011-09-18 21:46:22 UTC 
Changing customer bugs that have been resolved more than a year ago to closed.