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TODO

Add-ons

  • drawing

    • (>v1.0) support for switching plot styles (DXF_DEFAULT_PAPERSPACE_COLORS)
    • (>v1.0) VIEWPORT rendering support?

  • (>v1.0) Native SVG exporter, planned after the matplotlib backend supports all v1.0 features.

  • (>v1.0) Native PDF exporter? Problem: The PDF 1.7 reference has ~1300 pages, but I assume I only need a fraction of that information for a simple exporter. I can use Matplotlib for text rendering as Bèzier curves if required.

    Existing Python packages for PDF rendering:

    • pycairo: binary wheels for Windows on PyPI - could handle SVG & PDF, but I don't know how much control I get from cairo. The advantage of a native exporter would be to get full control over all available features of the output format, by the disadvantage of doing ALL the work by myself.
    • pypoppler: only source code distribution from 2013 on PyPI
    • python-poppler-qt5: only source code distribution on PyPI
    • Reportlab: more report or magazine page layout oriented
    • PyQt: QPrinter & QPainter - https://wiki.qt.io/Handling_PDF

    In consideration, if the SVG exporter works well.

  • (>v1.0) DWG loader, planned for the future. Cython will be required for the low level stuff, no pure Python implementation.

Render Tools

  • (>v1.0) ACAD_TABLE tool to render content as DXF primitives to create the content of the anonymous block *T...
  • (>v1.0) factory methods to create ACAD_TABLE entities
  • (>v1.0) fix LWPOLYLINE parsing error in ProxyGraphic, see test script 239
  • (>v1.0) tool to create proxy graphic

DXF Entities

  • (>v1.0) ACAD_TABLE entity load and export support beyond AcadTableBlockContent
  • (>v1.0) ACAD_TABLE tool to manage content at table and cell basis
  • (>v1.0) GEODATA version 1 support, see mpolygon examples and DXF reference R2009
  • (>v1.0) FIELD, used by ACAD_TABLE and MTEXT

DXF Document

  • (>v1.0) doc.to_dxf_r12(): convert the whole DXF document into DXF R12. This is a destructive process, which converts or explodes DXF entities:

    • explode MTEXT, MULTILEADER, MLINE, ACAD_TABLE, ARC_DIMENSION
    • convert MESH to PolyFaceMesh
    • convert LWPOLYLINE into 2D polyline
    • flatten SPLINE into a 3D polyline
    • flatten ELLIPSE into a 3D polyline

    Removes all data not supported by DXF R12:

    • all ACIS based entities
    • HATCH and MPOLYGON entities
    • IMAGE and UNDERLAY entities
    • XLINE and RAY entities
    • OBJECTS and the CLASSES sections
    • all but the first paper space layout

  • (>v1.0) core module ezdxf.xref as replacement for the Importer add-on

    • AutoCAD does not support DXF as XREF objects!
    • ezdxf will only support DXF as XREF objects, use the odafc add-on to convert DWG to DXF
    • has to be much more versatile than the current Importer add-on otherwise just improve and extend the Importer add-on
    • resource management like CAD applications, e.g. layer names of xrefs: $0$layername
    • xref.bind(xref_block): convert a XREF into a common BLOCK, this replaces the model space import of the Importer add-on
    • xref.attach(doc, "xref_filename.dxf"), replaces Drawing.add_xref_def()
    • xmgr = xref.XRefManager(source_doc, target_doc)
    • xmgr.import_modelspace() import all modelspace entities
    • xmgr.import_entities(entities) import selected entities
    • modify entities on import (transform, change DXF properties)
    • xmgr.import_block("block_name")
    • xmgr.import_resources(resource_desc)
    • xmgr.import_paperspace("layout_name") ???
    • xmgr.finalize()

Documentation

  • Basic concept & tutorial: Text styling (TEXT, ATTRIB, ATTDEF, MTEXT)
  • Tutorial for POLYFACE