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utilise a custom rgba to rgb image type converter. One that is aware of brightness(a)

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CiscoTheWolf 2023-05-18 11:30:46 +02:00
parent 895f87aecb
commit 415f2f9987
1 changed files with 22 additions and 2 deletions
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24
rpi/roy-test.py
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@ -15,15 +15,35 @@ matrix = RGBMatrix(options = options)
# Load image and make sure it fits our screen.
def pure_pil_alpha_to_color_v2(image, color=(0, 0, 0)):
"""Alpha composite an RGBA Image with a specified color.
Simpler, faster version than the solutions above.
Source: http://stackoverflow.com/a/9459208/284318
Keyword Arguments:
image -- PIL RGBA Image object
color -- Tuple r, g, b (default 255, 255, 255)
"""
image.load() # needed for split()
background = Image.new('RGB', image.size, color)
background.paste(image, mask=image.split()[3]) # 3 is the alpha channel
return background
image = Image.open("../testImg.bmp")
image.thumbnail((matrix.width, matrix.height), Image.ANTIALIAS)
RGBImage = pure_pil_alpha_to_color_v2(image.thumbnail((128,62), Image.ANTIALIAS))
# offscreen canvas that can be written to which can then be set to the matrix async
offscreen_canvas = matrix.CreateFrameCanvas()
offscreen_canvas.brightness = 50
offscreen__text_canvas = matrix.CreateFrameCanvas()
offscreen__text_canvas.brightness = 50
offscreen__text_canvas.SetImage(image.convert('RGB'))
offscreen__text_canvas.SetImage(RGBImage)
def updateScreen():