From 7c3d7209e2ca21d84139ba0bda0ad7770981a58b Mon Sep 17 00:00:00 2001
From: Jonathan Neuhauser <jonathan.neuhauser@outlook.com>
Date: Wed, 11 Jun 2025 22:41:40 +0200
Subject: [PATCH] Provide __array_interface__ implementation on
 ImmutableVector2D

---
 inkex/transforms.py            | 9 +++++++++
 tests/test_inkex_transforms.py | 2 --
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/inkex/transforms.py b/inkex/transforms.py
index ec2a3d268..9a35a77d6 100644
--- a/inkex/transforms.py
+++ b/inkex/transforms.py
@@ -42,6 +42,8 @@ from typing import (
 )
 import cmath
 
+import numpy as np
+
 
 from .utils import strargs, KeyDict
 
@@ -83,6 +85,13 @@ class ImmutableVector2d:
     x = property(lambda self: self._x)
     y = property(lambda self: self._y)
 
+    @property
+    def __array_interface__(self):
+        z = complex(self)
+        # Allocate a NumPy scalar just to get the memory buffer
+        arr = np.array([z], dtype=np.complex128)
+        return {"shape": (), "typestr": arr.dtype.str, "data": (arr.ctypes.data, False)}
+
     @overload
     def __init__(self):
         pass
diff --git a/tests/test_inkex_transforms.py b/tests/test_inkex_transforms.py
index 5965f5d93..35844edad 100644
--- a/tests/test_inkex_transforms.py
+++ b/tests/test_inkex_transforms.py
@@ -22,7 +22,6 @@ from inkex.tester import TestCase
 class ImmutableVector2dTest(TestCase):
     """Test the ImmutableVector2d object"""
 
-    @pytest.mark.xfail
     def test_numpy_conversion(self):
         """Check that vectors work fine in numpy datatypes (they are complex under
         the hood)"""
@@ -796,7 +795,6 @@ class ExtremaTest(TestCase):
         self.assertAlmostEqual(cmin, a, delta=1e-6)
         self.assertAlmostEqual(cmax, a, delta=1e-6)
 
-    @pytest.mark.xfail
     def test_numpy_conversion(self):
         """Conversion to numpy"""
 
-- 
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