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A Python library to create DXF R12 drawings.

Project description

dxfwrite

Abstract

A Python library to create DXF R12 drawings.

a simple example:

from dxfwrite import DXFEngine as dxf
drawing = dxf.drawing('test.dxf')
drawing.add(dxf.line((0, 0), (10, 0), color=7))
drawing.add_layer('TEXTLAYER', color=2)
drawing.add(dxf.text('Test', insert=(0, 0.2), layer='TEXTLAYER'))
drawing.save()

supported DXF R12 entities

  • ARC

  • ATTDEF

  • ATTRIB

  • BLOCK

  • CIRCLE

  • 3DFACE

  • INSERT

  • LINE

  • POINT

  • POLYLINE (special Polyface and Polymesh objects are available)

  • SHAPE (not tested)

  • SOLID

  • TRACE

  • TEXT

  • VERTEX (only for internal use, see Polyline, Polyface and Polymesh objects)

  • VIEWPORT

not supported DXF R12 entities

  • DIMENSION

emulated entities from DXF R13 and later

  • MTEXT (R13) … emulated as composite entity MText

  • ELLIPSE (R13) … approximated by Ellipse

  • SPLINE (R13) … approximated by Spline

  • LWPOLYLINE (R13) … use POLYLINE

  • TABLE (R2005) … emulated as composite entity Table

composite entities

  • MText – multi-line text

  • LinearDimension

  • AngularDimension

  • ArcDimension

  • RadialDimension

  • Table – text and blockrefs containing table like a HTML-table

  • Ellipse – approximated as POLYLINE

  • Spline – cubic spline curve through breakpoints without additional control points, approximated as POLYLINE

  • Bezier – cubic bezier curve through breakpoints with additional control points, approximated as POLYLINE

  • Clothoid – Euler spiral, approximated as POLYLINE

read/write AutoCAD ctb-files

The module acadctb provides the ability to read and write AutoCAD ctb-files. With ctb-files you can assign a new color or lineweight to a dxf-color-index for plotting or printing, but this has to be supported by the used application.

a simple example:

from dxfwrite import acadctb
ctb = acadctb.load('test.ctb')
style1 = ctb.get_style(1) # dxf color index (1 .. 255)
style1.set_color(23, 177, 68) # set rgb values (0..255)
style1.set_lineweight(0.7)
ctb.save('new.ctb')

Installation

with pip:

pip install dxfwrite

or from source:

python setup.py install

Documentation

http://dxfwrite.readthedocs.org

http://packages.python.org/dxfwrite/

The source code repository of dxfwrite can be found at GitHub.com:

https://github.com/mozman/dxfwrite.git

Feedback is greatly appreciated.

mozman <mozman@gmx.at>

News

Version 1.2.1 - 2017-01-22

Version 1.2.0 - 2012-08-01

  • License changed to MIT License

  • tested on Win7 with: CPython2.7, CPython3.2, CPython3.3 beta, pypy-1.9

Version 1.1.0 - 2011-12-29

  • rewrite of DXF-String building process

  • refactored MText class

  • changed Viewport table entry to VPort and DXFEngine.viewport to DXFEngine.vport. This was necessary to implement the VIEWPORT (Entity)

  • added VIEWPORT (Entity) to create viewports in paper space

  • view docs also on http://dxfwrite.readthedocs.org

  • added some docs

  • changed clothoid mirror parameters

  • added methods to class Layer: on(), off(), freeze(), thaw(), lock(), unlock()

  • tested on Win7 32 Bit with CPython-2.7, CPython-3.2 and pypy-1.7, IronPython 2.7 failed tests - unicode issues

  • tested on Ubuntu 11.10 64 Bit with CPython-2.7, CPython-3.2 and pypy-1.7

Version 1.0.2 - 2011-12-08

  • raw unicode encoding by Toni Ruža - use any unicode character for text and table-entries.

Version 1.0.1 - 2011-03-26

  • added easy usage of modelspace/paperspace, see examples/paperspace.py

  • BUGFIX: removed dict-comprehension in module htmlcolors.py for backward-compatibility to Python 2.5 and 2.6, works with pypy 1.4.1

Version 1.0.0 - 2011-03-11

  • changed: set DXF Header variables now looks like dwg.header[‘$VAR’] = value, see http://packages.python.org/dxfwrite/headervars.html

  • splitted makedxfexamples.py into several files and moved them into the subdir ‘examples’

  • curves.Ellpise: radiusx -> rx; radiusy -> ry

  • moved documentation to: http://packages.python.org/dxfwrite, and using Sphinx (http://sphinx.pocoo.org)

  • tested with Python 3.2 - OK

  • further compatibility-tests only for CPython 2.7 & CPython 3.2+

  • added Drawing.add_xref(filename), for usage see examples/xref.py

  • adding relative attributes by Insert.add() consider the xy-scaling

  • added Howtos section to documentation

Version 0.3.6 - 2010-11-14

  • moved dxfwrite.drawing.ENCODING to class Drawing

  • Python 3.1 support

Version 0.3.5 - 2010-09-10

  • new: package and tests run with Python 2.7

Version 0.3.4 - 2010-08-29

  • status: 5 - Production/Stable

  • new: package and tests run with Python 2.5 (tests need unittest2)

Version 0.3.3 - 2010-04-27

  • BUGFIX: makedxfexamples.py - attdef keyword error

Version 0.3.2 - 2010-04-27

  • BUGFIX: Drawing.__dxf__() - StringIO() does not support ‘with’ statement

Version 0.3.1 - 2010-04-24

  • new: insert2, insert block reference with automatic attrib filling

  • changed interface for DXFEngine.attrib()

Version 0.3.0b1 - 2010-03-28

  • new: subpackage algebra: circle, ray, clothoid, cspline, bezier (27.03.2010)

  • new: Spline, Bezier, Clothoid and Ellipse - curves (27.03.2010)

  • new: acadctb.py to read, write and create AutoCAD ctb-files (25.03.2010)

  • splitted buildups.py into mtext.py and rect.py

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