From e84d467d3430303f8fe5bc14553ae7f4f1a00bfa Mon Sep 17 00:00:00 2001
From: 2 * r + 2 * t <61896496+soramanew@users.noreply.github.com>
Date: Fri, 31 Jan 2025 14:22:54 +1100
Subject: scheme: smart sort + mixing

Sort colours to be in correct order (i.e. make red actually red not green or something)
Mix colours to be more similar to what they are actually supposed to be
---
 scheme/autoadjust.py | 96 +++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 92 insertions(+), 4 deletions(-)

diff --git a/scheme/autoadjust.py b/scheme/autoadjust.py
index a8632ac..db70138 100755
--- a/scheme/autoadjust.py
+++ b/scheme/autoadjust.py
@@ -1,27 +1,115 @@
 #!/bin/python3
 
 import sys
+from math import sqrt
 from colorsys import rgb_to_hls, hls_to_rgb
 
+light_colours = [
+    "dc8a78",
+    "dd7878",
+    "ea76cb",
+    "8839ef",
+    "d20f39",
+    "e64553",
+    "fe640b",
+    "df8e1d",
+    "40a02b",
+    "179299",
+    "04a5e5",
+    "209fb5",
+    "1e66f5",
+    "7287fd",
+]
+
+dark_colours = [
+    "f5e0dc",
+    "f2cdcd",
+    "f5c2e7",
+    "cba6f7",
+    "f38ba8",
+    "eba0ac",
+    "fab387",
+    "f9e2af",
+    "a6e3a1",
+    "94e2d5",
+    "89dceb",
+    "74c7ec",
+    "89b4fa",
+    "b4befe",
+]
+
 def hex_to_rgb(hex: str) -> tuple[int, int, int]:
     """Convert a hex string to an RGB tuple in the range [0, 1]."""
     return tuple(int(hex[i:i+2], 16) / 255 for i in (0, 2, 4))
 
+def rgb_to_hex(rgb: tuple[int, int, int]) -> str:
+    """Convert an RGB tuple in the range [0, 1] to a hex string."""
+    return "".join(f"{round(i * 255):02X}" for i in rgb)
+
 def hex_to_hls(hex: str) -> tuple[float, float, float]:
     return rgb_to_hls(*hex_to_rgb(hex))
 
-def adjust_saturation(hex: str, amount: float,) -> str:
+def adjust(hex: str, light: float = 0, sat: float = 0) -> str:
     h, l, s = hex_to_hls(hex)
-    s = max(0, min(1, s + amount))
-    return "".join(f"{round(i * 255):02X}" for i in hls_to_rgb(h, l, s))
+    l = max(0, min(1, l + light))
+    s = max(0, min(1, s + sat))
+    return rgb_to_hex(hls_to_rgb(h, l, s))
+
+def distance(colour: str, base: str) -> float:
+    r1, g1, b1 = hex_to_rgb(colour)
+    r2, g2, b2 = hex_to_rgb(base)
+    return sqrt((r2 - r1)**2 + (g2 - g1)**2 + (b2 - b1)**2)
+
+def smart_sort(colours: list[str], base: list[str]) -> list[str]:
+    sorted_colours = [None] * len(colours)
+    distances = {}
+
+    for colour in colours:
+        dist = [(i, distance(colour, b)) for i, b in enumerate(base)]
+        dist.sort(key=lambda x: x[1])
+        distances[colour] = dist
+
+    for colour in colours:
+        while len(distances[colour]) > 0:
+            i, dist = distances[colour][0]
+
+            if sorted_colours[i] is None:
+                sorted_colours[i] = colour, dist
+                break
+            elif sorted_colours[i][1] > dist:
+                old = sorted_colours[i][0]
+                sorted_colours[i] = colour, dist
+                colour = old
+
+            distances[colour].pop(0)
+
+    return [i[0] for i in sorted_colours]
+
+def mix(a: str, b: str, w: float) -> str:
+    r1, g1, b1 = hex_to_rgb(a)
+    r2, g2, b2 = hex_to_rgb(b)
+    return rgb_to_hex((r1 * (1 - w) + r2 * w, g1 * (1 - w) + g2 * w, b1 * (1 - w) + b2 * w))
+
+def mix_colours(colours: list[str], base: list[str], amount: float) -> list[str]:
+    for i, b in enumerate(base):
+        colours[i] = mix(colours[i], b, amount)
 
 if __name__ == "__main__":
     light = sys.argv[1] == "light"
 
     added_sat = 0.25 if light else 0.1
+    base = light_colours if light else dark_colours
 
+    colours = []
     for colour in sys.argv[3].split(" ")[1:]:
-        print(adjust_saturation(colour, added_sat))
+        colours.append(adjust(colour, sat=added_sat))  # TODO: optional adjust
+
+    colours = smart_sort(colours, base)  # TODO: optional smart sort
+
+    mix_colours(colours, base, 0.5)  # TODO: customize mixing from config
+
+    for colour in colours:
+        print(colour)
 
     for layer in sys.argv[4:]:
         print(layer.split(" ")[0])
-- 
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