On Thu, 16 Jun 2011 21:58:42 +0200
André Wobst <[email protected]> scribit:
> Dear Bastian,
>
> the symbols in the graph style show one possibility to draw paths. You can
> make a function that returns a path at a certain position (not tested):
>
> from pyx import *
>
> def symbol(x, y, size):
> return path.path(path.moveto(x, y), path.lineto(x+size, y+size))
>
> c = canvas.canvas()
> c.stroke(symbol(0, 0, 1))
> c.writePDFfile()
>
> There are other solutions as well (like returning a canvas). It just depends
> on what needs to be drawn (whether it can be returned as a path or not for
> example). But that way you'll always need to rebuilt the symbols using PyX
> paths.
>
> However, when you discuss music symbols, you might want to check existing
> fonts. MusixTeX for example provides a set of fonts. You will most probably
> have it on your machine already, as it is contained in many LaTeX
> distributions. Just check whether you can find a font like musix11.pfb on
> your system (of find it online somewhere). You can than use this font by the
> following code (just update the position of the pdf file):
>
> from pyx import *
> from pyx import bbox, font
> from pyx.font import t1file, metric
>
> n =
> '/usr/local/texlive/2008/texmf-dist/fonts/type1/public/musixtex/musix11.pfb'
>
> class noMetric(metric.metric):
>
> def __init__(self, t1font):
> self.t1font = t1font
> self.t1font._data2decode()
> self.glyphinfocache = {}
>
> def getglyphinfo(self, glyphname):
> if glyphname not in self.glyphinfocache:
> self.glyphinfocache[glyphname] =
> self.t1font.getglyphinfo(glyphname)
> return self.glyphinfocache[glyphname]
>
> def width_ds(self, glyphnames):
> return sum(self.getglyphinfo(glyphname)[0]
> for glyphname in glyphnames)
>
> def width_pt(self, glyphnames, size_pt):
> return sum(self.getglyphinfo(glyphname)[4]
> for glyphname in glyphnames)*size_pt/1000.0
>
> def height_pt(self, glyphnames, size_pt):
> return sum(self.getglyphinfo(glyphname)[5]
> for glyphname in glyphnames)*size_pt/1000.0
>
> def depth_pt(self, glyphnames, size_pt):
> return sum(self.getglyphinfo(glyphname)[3]
> for glyphname in glyphnames)*size_pt/1000.0
>
> def writePDFfontinfo(self, file):
> self.t1font.writePDFfontinfo(file)
>
>
> c = canvas.canvas()
> t1 = t1file.from_PFB_filename(n)
> f = font.T1font(t1, noMetric(t1))
> for x in range(16):
> for y in range(16):
> i = x+16*y
> c.stroke(path.rect_pt(-25+50*x, -25-50*y, 50, 50))
> c.text_pt(50*x, 15-50*y, str(i), [text.halign.center])
> c.insert(f.text_pt(x*50, -y*50, 'a', 10, decoding={'a':
> t1.glyphlist[i]}))
> c.writePDFfile()
>
> Unfortunately there is no AFM file available for this font, but I quickly
> created a "noMetric" replacement to grab the information from the pdf file
> itself. I'll probably fix this in PyX itself by some other workaround, but
> for the moment this should be fine to show you what you could do instead by
> reusing some existing font.
>
> Best,
>
>
> André
Thanks, André. I can write a convenient ergonomic class for my use.
I am not sure that I understand the sense of the 'a' : is it a trick or
placeholder
before entering in the decoding ?
>
>
> Am 16.06.2011 um 11:04 schrieb R. Bastian:
>
> > Bonjour,
> >
> > I try to include music symbols in PyX.
> > The symbols were writtent originally by Daniel Taupin and later
> > transformed by Matti Koskinen (bitmap -> PS) and Bill Schottstaedt (->
> > Lisp).
> >
> > In 'style.py' are the functions _squaresymbol & others written as
> > pseudo-PostScript,
> > with 'change...' functions.
> > In 'path.py' are the functions rlineto, rcurveto, ... which are usefull to
> > translate the PostScript code to Python ("et retour" :-).
> >
> > The model of my PS code is always:
> > x y scale symbol
> > % symbol = bemol | diese | becarre | viertel | halbe | kopf | wkopf ...
> >
> > Is there a convenient way to use this symbols in PyX ?
> >
> >
> > --
> > René Bastian
> > www.pythoneon.org
> > www.musiques-rb.org
> >
> > ------------------------------------------------------------------------------
> > EditLive Enterprise is the world's most technically advanced content
> > authoring tool. Experience the power of Track Changes, Inline Image
> > Editing and ensure content is compliant with Accessibility Checking.
> > http://p.sf.net/sfu/ephox-dev2dev
> > _______________________________________________
> > PyX-user mailing list
> > [email protected]
> > https://lists.sourceforge.net/lists/listinfo/pyx-user
>
> --
> by _ _ _ Dr. André Wobst, Amselweg 22, 85716 Unterschleißheim
> / \ \ / ) [email protected], http://www.wobsta.de/
> / _ \ \/\/ / PyX - High quality PostScript and PDF figures
> (_/ \_)_/\_/ with Python & TeX: visit http://pyx.sourceforge.net/
>
--
René Bastian
www.pythoneon.org
www.musiques-rb.org
------------------------------------------------------------------------------
EditLive Enterprise is the world's most technically advanced content
authoring tool. Experience the power of Track Changes, Inline Image
Editing and ensure content is compliant with Accessibility Checking.
http://p.sf.net/sfu/ephox-dev2dev
_______________________________________________
PyX-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/pyx-user
