Adding missing import.

python/raytracing/geodesics.py

@@ -8,6 +8,7 @@
 from ..geometric_structure.geodesic.core_curves import add_r13_core_curves
 from ..tiling.triangle import add_triangles_to_tetrahedra
 from ..snap.t3mlite import Mcomplex, simplex
+from ..matrix import matrix # type: ignore
 
 import traceback