Patches item #735, was opened at 2007-02-19 22:00 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=495&aid=735&group_id=106 Category: Positioning Group: v1.40.0 Status: Open Resolution: None Priority: 5 Submitted By: Hartmut Henkel (hhenkel)
Assigned to: Taco Hoekwater (taco) Summary: patch for simplified horizontal positional tracking
Initial Comment: 1. simpler calculations for horizontal position update when inside []TJ arrays, now by pure additions within a fontsize/10000 raster; no rounding errors can accumulate. Gives about 7 % pdftex speed gain when typesetting fiction-type stuff. 2. writet3.c now also with standard /FontMatrix [0.001 0 0 0.001 0 0], tidied up a little (.pgc part untested). No need anymore (hope it's right) to handle PK fonts specially by adv_char_width() in pdftex.web. 3. wrong use of printf() at a few places corrected by Martin. Work in progess, not safe for production. Needs more testing, particularly with PK fonts. Regards, Hartmut ----------------------------------------------------------------------
Comment By: Martin Schröder (oneiros) Date: 2007-12-18 15:57
Message: Logged In: YES user_id=421 Hartmut, what's the state of this? ---------------------------------------------------------------------- Comment By: Hartmut Henkel (hhenkel) Date: 2007-03-04 11:27 Message: Logged In: YES user_id=929 the extended patch 70226a needs more work; removed the patch file. ---------------------------------------------------------------------- Comment By: Hartmut Henkel (hhenkel) Date: 2007-02-25 23:51 Message: Logged In: YES user_id=929 The previous patch 735 is now extended to general text and graphics positioning on the PDF page. pdf_set_origin() (now pdf_move_to()), pdf_set_textmatrix(), and pdf_begin_string() are rewritten. In low placement resolution (e. g. \pdfdecimaldigits=0) now the glyph placement is corrected within the []TJ array by a leading number, like [7(a)...]TJ, if required, so that always full TeX precision is kept (very early pdftex versions might have used this also). Any accumulation of rounding errors should be avoided now by the used calculation principle. Needs lots of testing. Regards, Hartmut ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=495&aid=735&group_id=106