Improve consistency of ndarray members

masque/shapes/path.py

@@ -98,7 +98,7 @@ class Path(Shape):
 
     @vertices.setter
     def vertices(self, val: numpy.ndarray):
-        val = numpy.array(val, dtype=float)
+        val = numpy.array(val, dtype=float)                 #TODO document that these might not be copied
         if len(val.shape) < 2 or val.shape[1] != 2:
             raise PatternError('Vertices must be an Nx2 array')
         if val.shape[0] < 2:

masque/shapes/polygon.py

@@ -30,7 +30,7 @@ class Polygon(Shape):
 
     @vertices.setter
     def vertices(self, val: numpy.ndarray):
-        val = numpy.array(val, dtype=float)
+        val = numpy.array(val, dtype=float)                  #TODO document that these might not be copied
         if len(val.shape) < 2 or val.shape[1] != 2:
             raise PatternError('Vertices must be an Nx2 array')
         if val.shape[0] < 3:

masque/shapes/text.py

@@ -64,7 +64,7 @@ class Text(Shape):
     def mirrored(self, val: List[bool]):
         if is_scalar(val):
             raise PatternError('Mirrored must be a 2-element list of booleans')
-        self._mirrored = list(val)
+        self._mirrored = numpy.ndarray(val, dtype=bool, copy=True)
 
     def __init__(self,
                  string: str,