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src/editor/utils/get_colour_lut.py

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+import numpy as np
+from typing import List
+from .random import random
+from .interpolate import interpolate, INTERPOLATION_TYPE
+
+
+def get_edit_points(variance: float, count: int) -> List[float]:
+    return [
+        random(i / (count - 1) - variance, i / (count - 1) + variance)
+        for i in range(count)
+    ]
+
+
+def get_colour_lut(
+    variance=0.1, count=5, type: INTERPOLATION_TYPE = "cubic"
+) -> List[int]:
+    edit_points = get_edit_points(variance=variance, count=count)
+    return [
+        round(interpolate(edit_points, i / 255, type=type) * 255)
+        for i in np.linspace(0, 255, 256)
+    ]