Re: [PyX-user] Path Line Aways Prints...

[Charles B. <bo...@bu...>]

Andre and Alan,

Many thanks for sharing how postsript handles lines of zero thickness and how PyX
handles draw vs stroke...here's some code that illustrates all this....

Thanks again,

Charley

==========================
from pyx import *


c = canvas.canvas()

p = path.path(path.moveto(-2, 0), path.curveto(-1, 0, -1, 1, 0, 1),
path.curveto(1, 1, 1, 0, 2, 0))

zeroThicknessPath = path.path(path.moveto(-2, 0.5), path.curveto(-1, 0.5, -1,
1.5, 0, 1.5),
path.curveto(1, 1.5, 1, 0.5, 2, 0.5))


noPath = path.path(path.moveto(-2, 1), path.curveto(-1, 1, -1, 2, 0, 2),
path.curveto(1, 2, 1, 1, 2, 1))


c.stroke(p, [deco.curvedtext("\PyX{} is fun!")])
c.stroke(zeroThicknessPath, [deco.curvedtext("\PyX{} is fun!"),style.linewidth(0)])
c.draw(noPath, [deco.curvedtext("\PyX{} is fun!")])

c.writeEPSfile("textalongpath")
c.writePDFfile("textalongpath")
==============================




Charles Bowman, Ph.D.
Dept. of Physiology and Biophysical Sciences
University at Buffalo
Buffalo NY 14214
Sherman 126
Tel: 716-829-3350

On Mon 10/22/12  1:11 AM , André Wobst wo...@us... sent:
> Dear Charles,
> 
> 
> Am 22.10.2012 um 05:17 schrieb Charles Bowman:
> > It's great to see PyX-0.12 working well on my xp
> and windows 7 boxes!
> Glad to hear that.
> 
> > When printing text along a path, I sometimes
> don't want to include the path so I> attempt to print a "zero width" path
> in the manner shown below. > 
> > The following code in PyX-0.12 prints a line
> when linewidth is set to zero  > 
> > Any suggestions?
> 
> Use the draw method instead of the stroke method. You can than ignore the
> linewidth at all, as the original path won't be contained in the output at
> all.
> Internally (and to introduce you with some PyX speak), the draw method
> applies all the decorators to the path and outputs it. The stroke and fill
> methods do the same, but they add the stroke and fill decorator. After all
> decorators have been applied, a decorated path instance will be output,
> which does not just contain the path with its output attributes applied,
> but also ornaments like the text along a path or an arrow head etc.
> Best,
> 
> 
> Andr�©
> 
> -- 
> by  _ _      _    Dr. Andr�© Wobst, Amselweg 22, 85716
> Unterschlei��heim/ \ \    / )   
> wo...@us..., http://www.wobsta.de// _ \ \/\/ /    PyX - High
quality PostScript and PDF figures
> (_/ \_)_/\_/     with Python & TeX: visit http://pyx.sourceforge.net/
> 
> 
> 
>