- added sdf folder ( doesnt work via pip or git=)

sdf/util.py

@@ -0,0 +1,32 @@
+import math
+import functools
+import inspect
+import numpy as np
+
+pi = math.pi
+
+degrees = math.degrees
+radians = math.radians
+
+
+def n_trailing_ascending_positive(d):
+    """
+    Determine how many elements in a given sequence are positive and ascending.
+
+    Args:
+        d (sequence of numbers): the sequence to check
+
+    Returns:
+        int : the amount of trailing ascending positive elements
+    """
+    d = np.array(d).flatten()
+    # is the next element larger than previous and positive?
+    order = (d[1:] > d[:-1]) & (d[:-1] > 0)
+    # TODO: Not happy at all with this if/else mess. Is there no easier way to find the
+    #       index in a numpy array after which the values are only ascending? 🤔
+    if np.all(order):  # all ascending
+        return d.size
+    elif np.all(~order):  # none ascending
+        return 0
+    else:  # count from end how many are ascending
+        return np.argmin(order[::-1]) + 1