add helper function to round FloatCoordinate to Coordinate

Author: pattonw

funlib/geometry/float_coordinate.py

@@ -3,6 +3,8 @@
 
 import numpy as np
 
+from .coordinate import Coordinate
+
 
 class FloatCoordinate(tuple):
     """A ``tuple`` of numbers or None.
@@ -47,6 +49,10 @@ def dims(self) -> int:
 
     def squeeze(self, dim: int = 0) -> "FloatCoordinate":
         return FloatCoordinate(c for i, c in enumerate(self) if i != dim)
+    
+    def round(self) -> Coordinate:
+        """Round to nearest integer and convert to Coordinate."""
+        return Coordinate(int(round(a)) if a is not None else None for a in self)
 
     def is_multiple_of(self, coordinate: "FloatCoordinate") -> bool:
         """Test if this coordinate is a multiple of the given coordinate."""