From 1c4d5d5b014682d747ce10fd3613c237bfa455d1 Mon Sep 17 00:00:00 2001
From: Alex Orid <TheCuriousNerd@users.noreply.github.com>
Date: Wed, 7 Apr 2021 14:38:49 -0400
Subject: [PATCH] Basic Control

---
 lights_module.py | 37 +++++++++++++++++++++++++++++++++++--
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/lights_module.py b/lights_module.py
index aa53036..13c8811 100644
--- a/lights_module.py
+++ b/lights_module.py
@@ -31,7 +31,7 @@ class Lights_Modules():
 
         for gc in range(groupCount):
             try:
-                #print(gc)
+                print("group n:" + str(gc))
                 group = b.get_group(gc ,'name')
                 print(group)
                 #group_list.append(group)
@@ -39,8 +39,41 @@ class Lights_Modules():
             except:
                 print(" --adding failed")
 
+        #b.set_group(18, "bri", 254) #This is max Brightness
+        #b.set_group(18, "on", True) #This is will turn ON
+        xy_result = self.rgb_to_xy(0,0,1) #This will take an rgb value and make it xy
+        b.set_group(18, "xy", xy_result) #This will make the lights in the group turn blue
 
-        print("\n finished doing the thing")
+        print("\n finished doing the things")
+
+
+
+    def rgb_to_xy(self, red, green, blue):
+        """ conversion of RGB colors to CIE1931 XY colors
+        Formulas implemented from: https://gist.github.com/popcorn245/30afa0f98eea1c2fd34d
+        Args:
+        red (float): a number between 0.0 and 1.0 representing red in the RGB space
+        green (float): a number between 0.0 and 1.0 representing green in the RGB space
+        blue (float): a number between 0.0 and 1.0 representing blue in the RGB space
+        Returns:
+        xy (list): x and y
+        """
+        # gamma correction
+        red = pow((red + 0.055) / (1.0 + 0.055), 2.4) if red > 0.04045 else (red / 12.92)
+        green = pow((green + 0.055) / (1.0 + 0.055), 2.4) if green > 0.04045 else (green / 12.92)
+        blue =  pow((blue + 0.055) / (1.0 + 0.055), 2.4) if blue > 0.04045 else (blue / 12.92)
+
+        # convert rgb to xyz
+        x = red * 0.649926 + green * 0.103455 + blue * 0.197109
+        y = red * 0.234327 + green * 0.743075 + blue * 0.022598
+        z = green * 0.053077 + blue * 1.035763
+
+        # convert xyz to xy
+        x = x / (x + y + z)
+        y = y / (x + y + z)
+
+        # TODO check color gamut if known
+        return [x, y]
 
 
 if __name__ == "__main__":