Rename to _validate_frame_transformation

Rename _validate_frame to _validate_frame_transformation to make method purpose more clear.

Author: sedonaprice

regions/core/core.py

@@ -794,7 +794,11 @@ def _standardize_frame(frame):
         frame = get_astropy_frame_class(frame)
         return frame
 
-    def _validate_frame(self, frame):
+    def _validate_frame_transformation(self, frame):
+        # Validate the transformation from a spherical region's
+        # current frame to a target frame
+
+        # Standardize target frame input:
         frame = self._standardize_frame(frame)
 
         # Check if current frame is transformable to new frame:

regions/shapes/annulus.py

@@ -390,7 +390,7 @@ def _outer_region(self):
                                      self.meta, self.visual)
 
     def transform_to(self, frame, merge_attributes=True):
-        frame = self._validate_frame(frame)
+        frame = self._validate_frame_transformation(frame)
 
         # Only center transforms, radii preserved
         center_transf = self.center.transform_to(frame, merge_attributes=merge_attributes)

regions/shapes/circle.py

@@ -354,7 +354,7 @@ def bounding_lonlat(self):
         return lons_arr, lats_arr
 
     def transform_to(self, frame, merge_attributes=True):
-        frame = self._validate_frame(frame)
+        frame = self._validate_frame_transformation(frame)
 
         center_transf = self.center.transform_to(
             frame, merge_attributes=merge_attributes,

regions/shapes/lune.py

@@ -172,7 +172,7 @@ def contains(self, coord):
         return self._compound_region.contains(coord)
 
     def transform_to(self, frame, merge_attributes=True):
-        frame = self._validate_frame(frame)
+        frame = self._validate_frame_transformation(frame)
 
         center_gc1_transf = self.center_gc1.transform_to(frame, merge_attributes=merge_attributes)
         center_gc2_transf = self.center_gc2.transform_to(frame, merge_attributes=merge_attributes)

regions/shapes/polygon.py

@@ -571,7 +571,7 @@ def contains(self, coord):
         return self._compound_region.contains(coord)
 
     def transform_to(self, frame, merge_attributes=True):
-        frame = self._validate_frame(frame)
+        frame = self._validate_frame_transformation(frame)
 
         # Only center transforms, radii preserved
         verts_transf = self.vertices.transform_to(frame, merge_attributes=merge_attributes)

regions/shapes/range.py

@@ -773,7 +773,7 @@ def contains(self, coord):
         return self._compound_region.contains(coord)
 
     def transform_to(self, frame, merge_attributes=True):
-        frame = self._validate_frame(frame)
+        frame = self._validate_frame_transformation(frame)
 
         transformed = {}