add points_in_polygon back to kiva.agg

kiva/agg/__init__.py

@@ -57,3 +57,22 @@ def __init__(self, size, pix_format=default_pix_format,
     warnings.warn("Error initializing Agg: %s" % ex, Warning, 2)
 
     GraphicsContextSystem = None
+
+
+def points_in_polygon(pts, poly_pts, use_winding=False):
+    """Keep this function around for old code, but warn anyone who calls it.
+    """
+    import inspect
+    import warnings
+    from kiva.api import points_in_polygon as new_points_in_polygon
+
+    msg = "points_in_polygon() has moved to kiva.api"
+    frame = inspect.currentframe().f_back
+    warnings.warn_explicit(
+        msg,
+        category=DeprecationWarning,
+        filename=inspect.getfile(frame.f_code),
+        lineno=frame.f_lineno,
+    )
+
+    new_points_in_polygon(pts, poly_pts, use_winding=use_winding)

kiva/tests/test_points_in_polygon.py

@@ -8,13 +8,27 @@
 #
 # Thanks for using Enthought open source!
 import unittest
+import warnings
 
 from numpy import allclose, array, zeros
 
+from kiva.agg import points_in_polygon as points_in_polygon_deprecated
 from kiva.api import points_in_polygon
 
 
 class TestPointsInPolygon(unittest.TestCase):
+    def test_deprecated_import(self):
+        polygon = array(((0.0, 0.0), (10.0, 0.0), (0.0, 10.0)))
+        points = array(((5.0, 5.0),))
+
+        with warnings.catch_warnings(record=True) as collector:
+            warnings.simplefilter("always")
+            points_in_polygon_deprecated(points, polygon)
+
+            assert len(collector) == 1
+            warn = collector[0]
+            assert issubclass(warn.category, DeprecationWarning)
+
     def test_empty_points_in_polygon(self):
         polygon = array(((0.0, 0.0), (10.0, 0.0), (10.0, 10.0), (0.0, 10.0)))
         points = zeros((0, 2))