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Hi,
That's ok- let me know if there's anything I can help with. I can't see what
textpath.py is doing any different on mac or linux, and it seems to find the
right glyph code- but I suspect freetype on the mac is passing back the
wrong glyph. So it would seem to point to a freetype problem, or a font
problem, and specific to the mac.
I did install the latest amsfonts but the bug was still there.
tcb
On Wed, Nov 4, 2009 at 2:32 PM, Jae-Joon Lee <lee...@gm...> wrote:
> It seems that this could be bug in textpath.py that picks up wrong
> glyph. Unfortunately, I cannot spend much time on this until the end
> of this week.
>
> As a matter of fact, I'm far from an expert on this issue. While I
> wrote the textpaht.py, the code is largely based on the code in the
> pdf_backend and svg_backend. So, I hope someone who is more
> knowledgeable than me step in.
>
> On the other hand, it seems that some glyph-name related bug has
> recently fixed in the amsfont. And, this might be related to the
> current issue.
>
> http://mirror.math.ku.edu/tex-archive/fonts/amsfonts/doc/README
>
> I'm not sure what version of amsfont you're using but, can you try to
> update them to newest 3.0.2 version? And see if that makes any change?
>
> I'll try to look into this later this week.
> Regards,
>
> -JJ
>
>
>
>
> On Tue, Nov 3, 2009 at 10:26 PM, tcb <the...@gm...<thecolourblue%2B...@gm...>>
> wrote:
> > hi,
> >
> > i took a quick look at what is going on here- but I have still not quite
> > found the problem. From tracing things back into the ft2font code, it
> seems
> > that the wrong glyph index is getting passed in or used somewhere. I put
> > this debugging code into ft2font.cpp in "FT2Font::load_glyph"
> >
> > #define MAX_LEN 1024
> > unsigned char bf[MAX_LEN];
> > FT_Get_Glyph_Name(face, glyph_index, bf, MAX_LEN);
> > std::cout << "FT2Font::load_glyph " << __FILE__ << ":" << __LINE__ << "
> "
> > << glyph_index << " "
> > << num << " "
> > << face->family_name << " "
> > << face->style_name << " "
> > << FT_Get_Postscript_Name(face) << " "
> > << "[ " << bf << " ]"
> > << std::endl;
> >
> > I modified your example demo_text_path2.py to just load the single symbol
> > '\pi' instead '\left[\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}\right]' - and
> > the output I get is this from the command line:
> >
> > FT2Font::load_glyph src/ft2font.cpp:1159 25 0 Computer Modern Medium
> CMMI12
> > [ xi ]
> >
> > so, it seems to pick the correct font but the wrong glyph name (xi
> instead
> > of pi)- I am not sure what the index should be. What gets displayed is
> the
> > '\xi' symbol- you can see from the first output I sent that '\pi' has
> been
> > replaced by '\xi' - the indexes of all the symbols are just offset by
> one, I
> > think.
> >
> > If the correct glyph index is being passed to ft2font, then it could very
> > well be a problem with freetype.
> >
> > regards
> >
> >
> > On Tue, Nov 3, 2009 at 6:19 PM, tcb <the...@gm...<thecolourblue%2B...@gm...>>
> wrote:
> >>
> >> Hi,
> >>
> >> Yes, with the pdfbackend, and using just the plain text code (with
> >> usetex=True), the correct output is produced (for Text but not
> TextPath). I
> >> modified your demo_text_path2.py to draw with text, and attached the
> output.
> >>
> >> This is the terminal output from running your attached code. I am using
> >> the texlive 2009 distribution- which appears to be working fine, I have
> not
> >> noticed any problems at all. What is the difference between the bluesky
> and
> >> amsfonts?
> >>
> >> texname, type1name, enc, char_id
> >> cmex10
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmex10.pfb
> >> None CMEX10-34
> >> cmsy10
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmsy10.pfb
> >> None CMSY10-49
> >> cmex10
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmsy10.pfb
> >> None CMEX10-88
> >> cmmi12
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi12.pfb
> >> None CMMI12-110
> >> cmr17
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMR17-61
> >> cmr17
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMR17-49
> >> cmsy10
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMSY10-0
> >> cmmi12
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMMI12-101
> >> cmmi12
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMMI12-105
> >> cmmi12
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMMI12-25
> >> cmr17
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMR17-50
> >> cmmi12
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMMI12-110
> >> cmex10
> >>
> /usr/local/texlive/2009/texmf-dist/fonts/type1/public/amsfonts/cm/cmr17.pfb
> >> None CMEX10-35
> >> phvr8r
> >> /usr/local/texlive/2009/texmf-dist/fonts/type1/urw/helvetic/uhvr8a.pfb
> >> /usr/local/texlive/2009/texmf-dist/fonts/enc/dvips/base/8r.enc
> >> Nimbus%20Sans%20L%20Regular-2
> >>
> >> regards,
> >>
> >>
> >> On Tue, Nov 3, 2009 at 2:50 PM, Jae-Joon Lee <lee...@gm...>
> wrote:
> >>>
> >>> On Tue, Nov 3, 2009 at 4:23 AM, tcb <the...@gm...<thecolourblue%2B...@gm...>>
> wrote:
> >>> > and if I convert the dvi with dvipng, it all seems in order
> >>> > (demo_text_path_tex.png). I haven't looked closely into how the
> >>> > textpath
> >>> > stuff works, but I thought it would read the dvi as a path, and
> display
> >>> > that
> >>> > on the screen- if that is correct then I dont know how it ends up
> >>> > displaying
> >>> > a different symbol from what is in the dvi file.
> >>>
> >>> Well, dvi files only contains the name of the tex font. What textpath
> >>> does is to pick up corresponding type I font and convert them to path
> >>> using the freetype library (as far as I know, this is what dvipng and
> >>> matplotlib pdf backend does). So, my guess is that, textpath is
> >>> somehow picking up wrong fonts, or wrong glyphs.
> >>>
> >>> The code works fine at least in my mac os X tiger w/ texlive 2008, and
> >>> in ubuntu with texlive 2007.
> >>> As I don't have any access to mac os X 10.6, it would be hard to track
> >>> down what is wrong. Here are a few more test I wish you to run.
> >>>
> >>> *) Check if pdf backend produces a correct result. Do not use textpath
> >>> example, but simply use text command with usetex=True, and see if the
> >>> pdf output is okay. FWIW, the textpath code is largely borrowed from
> >>> the pdfbackend.
> >>>
> >>> *) Run the attached code, and post the terminal output. The output is
> >>> basically the name of the tex font and the name of the substituted
> >>> type1 font, etc. For your reference, here is my output.
> >>>
> >>> texname, type1name, enc, char_id
> >>> cmex10
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmex10.pfb
> >>> None CMEX10-34
> >>> cmsy10
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmsy10.pfb
> >>> None CMSY10-49
> >>> cmex10
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmsy10.pfb
> >>> None CMEX10-88
> >>> cmmi12
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmmi12.pfb
> >>> None CMMI12-110
> >>> cmr17
> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMR17-61
> >>> cmr17
> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMR17-49
> >>> cmsy10
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMSY10-0
> >>> cmmi12
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMMI12-101
> >>> cmmi12
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMMI12-105
> >>> cmmi12
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMMI12-25
> >>> cmr17
> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMR17-50
> >>> cmmi12
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMMI12-110
> >>> cmex10
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/bluesky/cm/cmr17.pfb
> >>> None CMEX10-35
> >>> pncr8r
> >>> /usr/local/texlive/2008/texmf-dist/fonts/type1/urw/ncntrsbk/uncr8a.pfb
> >>> /usr/local/texlive/2008/texmf-dist/fonts/enc/dvips/base/8r.enc
> >>> Century%20Schoolbook%20L%20Roman-232
> >>>
> >>> Regards,
> >>>
> >>> -JJ
> >>
> >
> >
>