Help With effect to fade/scroll an Image

Seb Atkins · 3. April 2017

Hi Guys,

I have an Led Matrix set up and would like to use this to scroll in an image from left to right turn off all leds for a specified amount of time and then scroll another Image from right to left.

Has anyone wrote an effect to do this?

I have the Led's mimicing the image's by using hyperion-remote -i and specifying the image path but i cant see any way to make this scroll across the matrix is there any additional arguments i can pass on to this or does an effect need to be written?

Any help with this would be greatly appreciated

Thanks in advance

penfold42 · 5. April 2017

You'd need to write an effect

Seb Atkins · 5. April 2017

This is where i am so far,

The Led matrix lights up but all in one go and then fades quickly and stays off, I cannot seem to get it to scroll across the matrix, any help would be great im guessing i've missed something stupid, I have tried to use bits from the knightrider effect and a few examples I have came across on the forum as i am not a programmer in any sense of the word,

Any input would be appreciated,

Code

import hyperion
import time
import colorsys


# Get the parameters
speed = float(hyperion.args.get('speed', 1.0))
fadeFactor = float(hyperion.args.get('fadeFactor', 0.7))




# Check parameters
speed = max(0.0001, speed)
fadeFactor = max(0.0, min(fadeFactor, 1.0))


# Initialize the led data
width = 10
imageData = bytearray()


# french flag
# blue
imageData += bytearray((int(0), int(85), int(164)))
imageData += bytearray((int(0), int(85), int(164)))
imageData += bytearray((int(0), int(85), int(164)))


# white
imageData += bytearray((int(255), int(255), int(255)))
imageData += bytearray((int(255), int(255), int(255)))
imageData += bytearray((int(255), int(255), int(255)))
imageData += bytearray((int(255), int(255), int(255)))


# red
imageData += bytearray((int(239), int(65), int(53)))
imageData += bytearray((int(239), int(65), int(53)))
imageData += bytearray((int(239), int(65), int(53)))


# Calculate the sleep time and rotation increment
increment = 1
sleepTime = 1.0 / (speed * width)
while sleepTime < 0.05:
    increment *= 2
    sleepTime *= 2


# Start the write data loop
position = 0
direction = 1
while not hyperion.abort():
    hyperion.setImage(width, 1, imageData)


    # Move data into next state
    for i in range(increment):
        position += direction
        if position == -1:
            position = 1
            direction = 1
        elif position == width:
            position = width-2
            direction = -1


        # 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]
        imageData[3*position+1]
        imageData[3*position+2]

    # Sleep for a while
        time.sleep(sleepTime)

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