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pythondrawimaging

Define color of line drawn with Python Imaging Library from an RGB tuple?

I am trying to simply draw a vertical line and define the color based on an RGB tuple. ex. (100, 200, 80). I do not see anything in the Python Imaging Library that will allow me to define the color based on the tuple. Is there something I am missing in the library, or another library, that will allow me to define the color base on the RGB values?

I have already tried using 

finalImage = Image.new("RGB", (1000, 20000))
finalImageDraw = ImageDraw.Draw(finalImage)
finalImageDraw.line([(i, 0), (i, 1000)], fill=avgColor)

Where avgColor is a tuple. ie. (100, 75, 110). But it only draws black lines. Is this the correct usage?

Solution

  • use the fill argument on the draw.line method.

    You can use RGB, HSV or even named colours.

    Example (from the documentation)

    import Image, ImageDraw

im = Image.open("lena.pgm")

draw = ImageDraw.Draw(im)

# Fill=128 creates a grey line
draw.line((0, 0) + im.size, fill=128)   
draw.line((0, im.size[1], im.size[0], 0), fill=128)
del draw

# write to stdout
im.save(sys.stdout, "PNG")