Merge pull request #88 from spudwebb/master

add color parameter to the knight rider effect

Author: poljvd

effects/knight-rider.json

@@ -4,6 +4,7 @@
 	"args" :
 	{
 		"speed" : 1.0,
-		"fadeFactor" : 0.7
+		"fadeFactor" : 0.7,
+		"color" : [255,0,0]
 	}
 }

effects/knight-rider.py

@@ -2,9 +2,10 @@
 import time 
 import colorsys
 
-# Get the rotation time
+# Get the parameters
 speed = float(hyperion.args.get('speed', 1.0))
 fadeFactor = float(hyperion.args.get('fadeFactor', 0.7))
+color = hyperion.args.get('color', (255,0,0))
 
 # Check parameters
 speed = max(0.0001, speed)
@@ -13,7 +14,9 @@
 # Initialize the led data
 width = 25
 imageData = bytearray(width * (0,0,0))
-imageData[0] = 255
+imageData[0] = color[0]
+imageData[1] = color[1]
+imageData[2] = color[2]
 
 # Calculate the sleep time and rotation increment
 increment = 1
@@ -41,9 +44,13 @@
 		# Fade the old data
 		for j in range(width):
 			imageData[3*j] = int(fadeFactor * imageData[3*j])
+			imageData[3*j+1] = int(fadeFactor * imageData[3*j+1])
+			imageData[3*j+2] = int(fadeFactor * imageData[3*j+2])
 
 		# Insert new data
-		imageData[3*position] = 255
+		imageData[3*position] = color[0]
+		imageData[3*position+1] = color[1]
+		imageData[3*position+2] = color[2]
 
 	# Sleep for a while
 	time.sleep(sleepTime)