ImageData:getPixel

ImageData:getPixel

Gets the color of a pixel at a specific position in the image.

Valid x and y values start at 0 and go up to image width and height minus 1. Non-integer values are floored.

Prior to 0.10.2, this function does not properly handle non-integer coordinates, and may produce an invalid result when non-integer values are passed.

Function

Synopsis

r, g, b, a = ImageData:getPixel( x, y )

Arguments

number x

The position of the pixel on the x-axis.

number y

The position of the pixel on the y-axis.

Returns

number r

The red component (0-255).

number g

The green component (0-255).

number b

The blue component (0-255).

number a

The alpha component (0-255).

Examples

Iterates over the pixels of an image and stores them in a sequence.

local image = love.image.newImageData( 'path/to/Image.png' )
local pixels = {}
for x = 1, image:getWidth() do
    for y = 1, image:getHeight() do
        -- Pixel coordinates range from 0 to image width - 1 / height - 1.
        local pixel = image:getPixel( x - 1, y - 1 )
        pixels[#pixels + 1] = pixel
    end
end
return pixels

See Also

• ImageData
• ImageData:setPixel