February 2007 - dev-context - NTG Mailing Lists

[contexttest-Feature Requests][71] High-level bidirectional support
by contexttest-featurerequests＠foundry.supelec.fr 04 Feb '07

04 Feb '07

Feature Requests item #71, was opened at 2007-02-05 01:08 You can respond by visiting: http://foundry.supelec.fr/tracker/?func=detail&atid=164&aid=71&group_id=21 Or by replying to this e-mail entering your response between the following markers: #+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+ (enter your response here) #+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+ Status: Open Priority: 3 Submitted By: Mojca Miklavec (mojca) Assigned to: Nobody (None) Summary: High-level bidirectional support Version: None Category: Typesetting Initial Comment: (Copied from contextgarden.net) Bidirectional text layout for languages that are written from right to left like Arabic and Hebrew plus glyph shaping for complex script languages like Arabic and Thai. ---------------------------------------------------------------------- You can respond by visiting: http://foundry.supelec.fr/tracker/?func=detail&atid=164&aid=71&group_id=21

1 0

[contexttest-Feature Requests][70] Smooth shading
by contexttest-featurerequests＠foundry.supelec.fr 04 Feb '07

04 Feb '07

Feature Requests item #70, was opened at 2007-02-04 23:40 You can respond by visiting: http://foundry.supelec.fr/tracker/?func=detail&atid=164&aid=70&group_id=21 Or by replying to this e-mail entering your response between the following markers: #+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+ (enter your response here) #+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+#+ Status: Open Priority: 3 Submitted By: Mojca Miklavec (mojca) Assigned to: Nobody (None) Summary: Smooth shading Version: None Category: Typesetting Initial Comment: (Mojca's summary of needed features - I'll try to implemented, but I need to "save" the requirements somewhere before I forget them ;) Description is missing: this list is really taken "out of context". To implement that, the following is needed: - a well-defined metapost interface accepting optional parameters - "dirty" metapost specials and trickery My idea is to split the examples which have to be handled as streams (goraud shading for triangular meshes) and those that can be handled easily: linear & circular shading. I would worry about goraud shading later, since it's really difficult to make a sensible interface for it (unless it's about a single triangle). At least for linear and circular shading I would propose to split the function and the code which generates linear and circular shadings. That way it will be much easier to support what Peter wants (and what I need for the gnuplot terminal) & plotting a rainbow in a single move. (Type 2) For linear shadings we need: - a closed path to which it has to be applied, to calculate the bounding box (for start and stop point), to crop the shading - optional parameter if shading needs to extend over the two boundaries or not (not so important) - optionally provide the start and stop point for shading (default values: depends on angle; shading has to exactly cover the whole path) - optionally provide the angle (default 0) - provide the function or two colors - if two colors are provided, they should be passed to the function in a proper way (Type 3) For circular shadings we need: - a closed path to which the shading has to be applied: I guess that now the shading needs radius of the first circle - optional centers and radii of the two cicles (default values: both center in path center, one radius zero and one to cover the whole path) - optional parameter if shading needs to extend over the two boundaries or not (not so important; default values probably false?) - provide the function or two colors (Type 4) For "Free-Form Gouraud-Shaded Triangle Meshes" we need: - patched Gnuplot 4.3 (http://bugs.libgd.org/?do=details&task_id=39) m-gnuplot.tex and it's documentation ready; all other shadings functions and shadings listed here implemented; then we'll start discussing it For functions we need: * Type 0: sampled - let's worry about it later, I don't understand how to apply it; it can be mimicked with Type 3+Type 2 (although less efficient, but working OK) * Type 2: exponential interpolation - two colors - optional exponent (default 1) * Type 3: stitching (combining multiple functions) - multiple functions - optional bounds between them (default: evenly distributed) Watch out for alpha channel and CMYK! ---------------------------------------------------------------------- You can respond by visiting: http://foundry.supelec.fr/tracker/?func=detail&atid=164&aid=70&group_id=21

1 0

wandering positional graphic
by Sanjoy Mahajan 02 Feb '07

02 Feb '07

Almost the same test file as I used for testing 'dvipos' produces a wandering positional graphic, in dvi or pdf mode. Here's the test file. The problem is that the positional graphic (a tilted line) (that should be) connecting the '6' and the '8' is several inches too low on the page. I've attached a zip file with all the test files and results of running everything -- see the README in it (or just run 'make view'). I'm using Ubuntu/i386 with: CtxTools | context version: 2007.01.23 13:32 pdfTeX 3.141592-1.40.0-2.2 (Web2C 7.5.6) + patch for the mem corruption MetaPost, Version 0.993 (Web2C 7.5.5) metafun 2007-1-23 17:46 (format remade with latest apt-get) The example is as minimal as I could make it. Remove the \setuppapersize[bookpage][A4] and the graphics come out in the right place. Remove the \completecontent or the \section{Fake} and it also comes out okay. =================== begin: to-pdf.tex ================== \definepapersize[bookpage][width=6.875in,height=9in] \setuppapersize[bookpage][A4] \defineoverlay [foregraphics] [\positionoverlay{foregraphics}] \setupbackgrounds [page] [background={foreground,foregraphics}] \starttext \section{Fake} \completecontent \hpos{r13}{6} \hpos{r23}{7} \quad \hpos{r24}{8} \startMPpositiongraphic{mypos:line} mpprocset := 0; % context doesn't yet handle the new mpprocsets path pa, pb, pab ; numeric na, nb ; initialize_box(\MPpos{\MPvar{from}}) ; na := nxy ; pa := llxy..lrxy..urxy..ulxy..cycle ; initialize_box(\MPpos{\MPvar{to}}) ; nb := nxy ; pb := llxy..lrxy..urxy..ulxy..cycle ; if na=nb : pab := center pa -- center pb ; pab := pab cutbefore (pab intersectionpoint pa) ; pab := pab cutafter (pab intersectionpoint pb) ; pickup pencircle; draw pab; anchor_box(\MPanchor{\MPvar{from}}) ; fi ; \stopMPpositiongraphic \startpositionoverlay{foregraphics} \setMPpositiongraphic{r13}{mypos:line}{to=r24} \setMPpositiongraphic{r23}{mypos:line}{to=r24} \stoppositionoverlay \stoptext =================== end: to-pdf.tex ================== -Sanjoy `A nation of slaves is always prepared to applaud the clemency of their master who, in the abuse of absolute power, does not proceed to the last extremes of injustice and oppression.' (Gibbon)

2 4

New Debian packages
by Norbert Preining 02 Feb '07

02 Feb '07

Hi all! Hi Florent! I have uploaded new context packages 2007.01.23-1 BUT ONLY TO THE tug.org server!! Not to Debian till now. Why? I am a bit nervous with respect to this change in 2007.01.18: Switch to latin modern math fonts. If this gives you trouble, you have to update your latin modern font package, see CTAN Well. This is bad. Simply bad. Without backward compatibility I will not upload this to Debian. I cannot, because Debian currently has the lmodern fonts 1.foobar, but without the math fonts. I don't know whether Florent is planning to do an upload of lmodern with the new math fonts included (Florent?). So to be more specific: Is this an *absolute* dependency, ie setting math in context now *only* works with the lmodern math fonts installed? If yes, then sorry for the Debian using guys, but you have to wait until we have the new lmodern in Debian. Best wishes Norbert ------------------------------------------------------------------------------- Dr. Norbert Preining <preining(a)logic.at> Università di Siena Debian Developer <preining(a)debian.org> Debian TeX Group gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------------- BUDBY A nipple clearly defined through flimsy or wet material. --- Douglas Adams, The Meaning of Liff

6 21