Comments on: SDXF – Python Library for DXF

By: GBurnell

GBurnell — Mon, 07 Nov 2011 23:04:31 +0000

For those banging their headers against a brick wall with lwpolylines:
The issue with LWPOLYLINEs is that they were only introduced in R14. Autocad (unlike perhaps other dxf readers?) is a bit strict and believes the version number it is given in the dxf file and carps if it sees entities that shouldn’t exist in R10 files. Unfortunately bumping the release number up to emulate R14 files isn’t sufficient as you also need to have the code generate handles for lots of entities. So far I can’t get a set of handles that doesn’t make autocad fall over…

By: Kellbot

Kellbot — Fri, 28 Oct 2011 20:25:42 +0000

Hi johannes,

I’m not working on this project at the moment, but if you make improvements I’d be happy to add them.

I need to move this onto GitHub but haven’t had the spare cycles to do so. Perhaps someone already has?!

By: Kellbot

Kellbot — Fri, 28 Oct 2011 20:24:43 +0000

Hi Franco, this is all the documentation there is, sorry! But if you play with it and want to add to the documentation, send it to me and I can add it.

Hola Franco, esta es toda la documentación que hay, lo siento! Pero si usted trabaja con él y desea agregar a la documentación, me lo envíe y puedo añadir.

By: Franco Valledor

Franco Valledor — Fri, 28 Oct 2011 20:18:17 +0000

Hola podrías publicar la documentación completa de esta librería?? Gracias

By: Johannes Schmitz

Johannes Schmitz — Sat, 30 Jul 2011 13:04:15 +0000

I found that even in your test code at the end of sdxf.py
There is no test for Point.
You should complete your testcases.

By: Johannes Schmitz

Johannes Schmitz — Sat, 30 Jul 2011 12:58:27 +0000

Hello,
how can I draw a point, I can not find out the exact syntax.

d.append(sdxf.Point(points=[(2,2)]))

This does not work for me.
I am opening the resulting file with qcad. Drawing Lines and Text like in the example works fine.

Johannes

By: Chinnaswamy

Chinnaswamy — Sun, 14 Mar 2010 05:28:44 +0000

Hi ,
I have tried to run Example code of Hello World with Python 2.6.4. When tried to run the program, the message is “There’s an error in your program: invalid syntax”.

The item that highlighted in the pythons code is “6″ of Python 2.6.4.

Ca you please help in sorting out.

Thanks

Chinnaswamy

By: Panos M.

Panos M. — Sat, 09 Jan 2010 19:37:38 +0000

If you visit the following site you will find a different branch of sdxf that is used by Blender and it supports Polyline. : http://wiki.blender.org/index.php/Extensions:Py/Scripts/Manual/Export/DXF
You can download the library from here: http://cad4arch.com/blend01/prog/ble2dxf13.zip

@Kelly
If you have made significant changes from 1.1 perhaps the two projects could be merged?

By: Derek

Derek — Sun, 03 Jan 2010 00:45:10 +0000

DWG TrueView and Intellicad will open the dxf generated via the module test using the following class modified from the one provided by David:
————————————–
class PolyLine(_Entity):
”’Polyline”’
def __init__(self, points, flag=0, width=None, **common):
_Entity.__init__(self, **common)
self.points = points
self.flag = flag
self.width = width

def __str__(self):
result = ’0\nPOLYLINE\n%s\n66\n1\n70\n%s\n’ % (self._common(), self.flag)
result += ‘%s’ % _point((0.0, 0.0, 0.0))
for point in self.points:
result += ‘\n0\nVERTEX\n8\n%s\n%s’ % (self.layer,_point(point))
if self.width:
result += ‘\n40\n%s\n41\n%s’ % (self.width, self.width)
result += ‘\n0\nSEQEND’
return result
————————–
I’ve set code 66 as 1 and added code 70 to accept the standard polyline flags.

In the “PolyLine” call in the module test, change “closed” to “flag”; leave the value set as “1″ for a closed polyline.

I’ve been using the following resources to help understand the file format:
http://autodesk.com/techpubs/autocad/acad2000/dxf/
http://local.wasp.uwa.edu.au/~pbourke/dataformats/dxf/dxf10.html

By: nimpbus

nimpbus — Tue, 08 Dec 2009 23:08:46 +0000

thanks a bunch! This saves me a headache!