Difference between revisions of "(Image):replacePixels"
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=== Synopsis === | === Synopsis === | ||
<source lang="lua"> | <source lang="lua"> | ||
− | Image:replacePixels( data, slice, mipmap ) | + | Image:replacePixels( data, slice, mipmap, x, y, reloadmipmaps ) |
</source> | </source> | ||
=== Arguments === | === Arguments === | ||
{{param|ImageData|data|The new [[ImageData]] to replace the contents with.}} | {{param|ImageData|data|The new [[ImageData]] to replace the contents with.}} | ||
− | {{param|number|slice|Which | + | {{param|number|slice|Which [[TextureType|cubemap face, array index, or volume layer]] to replace, if applicable.}} |
− | {{param|number|mipmap ( | + | {{param|number|mipmap (1)|The mimap level to replace, if the Image has mipmaps.}} |
+ | {{param|number|x (0)|The x-offset in pixels from the top-left of the image to replace. The given ImageData's width plus this value must not be greater than the pixel width of the Image's specified mipmap level.}} | ||
+ | {{param|number|y (0)|The y-offset in pixels from the top-left of the image to replace. The given ImageData's height plus this value must not be greater than the pixel height of the Image's specified mipmap level.}} | ||
+ | {{param|boolean|reloadmipmaps|Whether to generate new mipmaps after replacing the Image's pixels. True by default if the Image was created with automatically generated mipmaps, false otherwise.}} | ||
=== Returns === | === Returns === | ||
Nothing. | Nothing. |
Revision as of 03:04, 5 April 2018
Available since LÖVE 0.11.0 |
This function replaces Image:refresh. |
Replace the contents of an Image.
Function
Synopsis
Image:replacePixels( data, slice, mipmap, x, y, reloadmipmaps )
Arguments
ImageData data
- The new ImageData to replace the contents with.
number slice
- Which cubemap face, array index, or volume layer to replace, if applicable.
number mipmap (1)
- The mimap level to replace, if the Image has mipmaps.
number x (0)
- The x-offset in pixels from the top-left of the image to replace. The given ImageData's width plus this value must not be greater than the pixel width of the Image's specified mipmap level.
number y (0)
- The y-offset in pixels from the top-left of the image to replace. The given ImageData's height plus this value must not be greater than the pixel height of the Image's specified mipmap level.
boolean reloadmipmaps
- Whether to generate new mipmaps after replacing the Image's pixels. True by default if the Image was created with automatically generated mipmaps, false otherwise.
Returns
Nothing.
Examples
function love.load()
imagedata = love.image.newImageData("pig.png")
image = love.graphics.newImage(imagedata)
end
function love.draw()
love.graphics.draw(image)
end
function love.keypressed(key)
if key == "e" then
-- Modify the original ImageData and apply the changes to the Image.
imagedata:mapPixel(function(x, y, r, g, b, a) return r/2, g/2, b/2, a/2 end)
image:replacePixels(imagedata)
end
end
See Also
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