import_curve.svg() ValueError: matrix does not have an inverse #102396

New Issue

Adam Krebs · 2022-11-10T06:16:12+01:00

Adam Krebs commented

2022-11-10 06:16:12 +01:00

System Information
Operating system: Windows 10 / 20H2 OS Build 19042.1083
Graphics card: RTX 3060 Mobile

Blender Version
Broken: 3.3.1
Worked: (n/a)

Short description of error

Importing an SVG with bpy.ops.import_curve.svg results in an error

# ... snip
  File "C:\Program Files\Blender Foundation\Blender 3.3\3.3\scripts\addons\io_curve_svg\import_svg.py", line 965, in _popMatrix
    self._context['matrix'] = self._context['matrix'] @ matrix.inverted()
ValueError: Matrix.invert(ed): matrix does not have an inverse

Exact steps for others to reproduce the error

Using this file:
File:

Run this line in the Python console:

bpy.ops.import_curve.svg(filepath=r'geo-eye-0.svg')

Could this use inverted_safe instead?

**System Information** Operating system: Windows 10 / 20H2 OS Build 19042.1083 Graphics card: RTX 3060 Mobile **Blender Version** Broken: 3.3.1 Worked: (n/a) **Short description of error** Importing an SVG with `bpy.ops.import_curve.svg` results in an error ``` # ... snip File "C:\Program Files\Blender Foundation\Blender 3.3\3.3\scripts\addons\io_curve_svg\import_svg.py", line 965, in _popMatrix self._context['matrix'] = self._context['matrix'] @ matrix.inverted() ValueError: Matrix.invert(ed): matrix does not have an inverse ``` **Exact steps for others to reproduce the error** Using this file: File: ![geo-eye-0.svg](https://archive.blender.org/developer/F13881529/geo-eye-0.svg) Run this line in the Python console: ``` bpy.ops.import_curve.svg(filepath=r'geo-eye-0.svg') ``` Could this use [inverted_safe ](https://docs.blender.org/api/current/mathutils.html#mathutils.Matrix.inverted_safe) instead?

Adam Krebs commented

2022-11-10 06:16:12 +01:00

Added subscriber: @Krebs

Adam Krebs commented

2022-11-10 06:28:39 +01:00

Confirmed that this also fails in the File > Import > SVG path too.

Pratik Borhade commented

2022-11-10 06:59:29 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Pratik Borhade commented

2022-11-10 06:59:32 +01:00

Added subscriber: @PratikPB2123

Sergey Sharybin commented

2022-11-10 10:48:06 +01:00

Added subscriber: @Sergey

Sergey Sharybin self-assigned this 2022-11-10 10:48:06 +01:00

Sergey Sharybin commented

2022-11-10 10:48:06 +01:00

Unfortunately, it is not as simple as simple use of inverted_safe. Using it will make it pushing degenerated matrix and poping it from the stack will not properly restore the state of the transformation stack.

I am currently testing a different approach to the matrix stack which does not require inversion and multiplication in pop.

Unfortunately, it is not as simple as simple use of `inverted_safe`. Using it will make it pushing degenerated matrix and poping it from the stack will not properly restore the state of the transformation stack. I am currently testing a different approach to the matrix stack which does not require inversion and multiplication in pop.

blender-admin commented

2022-11-10 11:07:05 +01:00

This issue was referenced by a28c3f9cc0

This issue was referenced by a28c3f9cc009958695e33c929a4524d10e0d31e0

Sergey Sharybin commented

2022-11-10 11:11:40 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Sergey Sharybin closed this issue

2022-11-10 11:11:40 +01:00

Adam Krebs commented

2022-11-10 14:53:33 +01:00

Thanks for the quick fix! Looking forward to testing it out

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import_curve.svg() ValueError: matrix does not have an inverse #102396