Faulty MLEADER proxy graphic

[mozman]

Found the last known error in the MLEADER proxy rendering:

Rendering by the ezdxf drawing add-on:

BricsCAD rendering of this MLEADER (not as proxy graphic):

TrueView from Autodesk shows the same result.

This is the relevant output from the debugger:

Command: set TRUE-COLOR
> ly: '0', clr: 256, lt: BYLAYER, lw: -3, ltscale: 1.0, rgb: None, fill: False
Command: set LINETYPE
> ly: '0', clr: 256, lt: BYLAYER, lw: -3, ltscale: 1.0, rgb: None, fill: False
Command: set LINEWEIGHT
> ly: '0', clr: 256, lt: BYLAYER, lw: 0, ltscale: 1.0, rgb: None, fill: False

  * POLYLINE
  * {'lineweight': 0, 'layer': '0'}

The lineweight of the last line segment is 0 and is therefore rendered by the add-on as it should be. The error is in the proxy graphic data (AutoCAD?). It is also not possible to change the line width of a single leader line, only a color change is possible.

This problem persists as long as the proxy graphic is used for MLEADER rendering. A rendering routine from ezdxf may be available in the future, but will never be perfect due to the complexity and lack of proper documentation of the MLEADER entity.