added 'simplify' util, version bump

setup.py

@@ -12,7 +12,7 @@
 
 setup(
     name='keyframed',
-    version='0.3.13',
+    version='0.3.14',
     author='David Marx',
     long_description=README,
     long_description_content_type='text/markdown',

src/keyframed/__init__.py

@@ -17,6 +17,8 @@
 )
 from .serialization import to_yaml
 
+from .utils import simplify
+
 
 __all__ = [
     'bisect_left_keyframe',
@@ -28,7 +30,8 @@
     'Keyframe',
     'ParameterGroup',
     'register_interpolation_method',
-    'SmoothCurve',
+    'simplify',
     'SinusoidalCurve',
+    'SmoothCurve',
     'to_yaml',
     ]

src/keyframed/curve.py

@@ -110,7 +110,7 @@ def interpolator_arguments(self):
         return {}
 
     def __eq__(self, other) -> bool:
-       return self.value == other
+        return self.value == other
     def __repr__(self) -> str:
         #d = f"Keyframe(t={self.t}, value={self.value}, interpolation_method='{self.interpolation_method}')"
         d = self.to_dict()

src/keyframed/utils.py

@@ -3,9 +3,29 @@
 from copy import deepcopy
 import random, string
 
+def simplify(curve):
+    j=1
+    while j < (len(curve._data)-1):
+        kf_prev = curve._data.peekitem(j-1)[1]
+        kf_this = curve._data.peekitem(j)[1]
+        kf_next = curve._data.peekitem(j+1)[1]
+
+        if not (kf_prev.value == kf_this.value == kf_next.value):
+            j+=1
+            continue
+        if not (kf_prev.interpolation_method == kf_this.interpolation_method == kf_next.interpolation_method):
+            j+=1
+            continue
+        if not (kf_prev._interpolator_arguments == kf_this._interpolator_arguments == kf_next._interpolator_arguments):
+            j+=1
+            continue
+        curve._data.popitem(j)
+    return curve
+
+
 def id_generator(size=6, chars=string.ascii_uppercase + string.digits):
     # via https://stackoverflow.com/questions/2257441/random-string-generation-with-upper-case-letters-and-digits
-   return ''.join(random.choice(chars) for _ in range(size))
+    return ''.join(random.choice(chars) for _ in range(size))
 
 
 class DictValuesArithmeticFriendly(UserDict):

tests/test_curve.py

@@ -1,6 +1,7 @@
 from keyframed import Curve, Keyframe
 from keyframed.curve import ensure_sorteddict_of_keyframes
-
+from keyframed.utils import simplify
+#from keyframed import simplify
 
 import pytest
 from sortedcontainers import SortedDict
@@ -163,3 +164,9 @@ def test_curve_interpolation():
 ###############################
 
 
+def test_simplify():
+    c = Curve(((0,1), (1,1), (2,1), (3,1), (4,2), (5,1), (6,1)))
+    c2 = simplify(c.copy())
+    assert len(simplify._data) == 5
+    for i in range(10):
+        assert c[i] == c2[i]