Added CSS color generator

sonogram_utility.py

@@ -25,6 +25,26 @@ def colors(n):
     ret.append((bgr[0][0][0].item()/255,bgr[0][0][1].item()/255,bgr[0][0][2].item()/255))
   return ret
 
+def colorsCSS(n):
+  '''
+  Creates a list size n of distinctive colors based on CSS formatting
+  '''
+  if n == 0:
+    return []
+  ret = []
+  h = int(random.random() * 180)
+  step = 180 / n
+  for i in range(n):
+    h += step
+    h = int(h) % 180
+    hsv = np.uint8([[[h,200,200]]])
+    bgr = cv2.cvtColor(hsv,cv2.COLOR_HSV2BGR)
+    b = f'{bgr[0][0][0].item():02x}'
+    g = f'{bgr[0][0][1].item():02x}'
+    r = f'{bgr[0][0][2].item():02x}'
+    ret.append('#'+b+g+r)
+  return ret
+    
 def extendSpeakers(mySpeakerList, fileLabel = 'NONE', maximumSecondDifference = 1, minimumSecondDuration = 0):
     '''
     Assumes mySpeakerList is already split into Speaker/Audience