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Get the color of a pixel (:get_color)

Declaration​

color, alpha = img:get_color(x, y)

Parameters​

  • x, y
    Integer. Coordinates of the pixel in the current image

Returns​

  • color
    Integer. Color value of the pixel. Note: if alpha is not 255, the RGB value should consider division by opacity (alpha/255)
  • alpha
    Integer. Opacity of the pixel, range 0~255

Description​

Get the color of a pixel in an image. Unlike screen sampling, image pixels also have an alpha channel

Example​

local img = image.load_file("/var/mobile/1.png")
local clr = img:get_color(100, 100)
sys.alert(string.format("Color at (100, 100): 0x%06x", clr))