Difference between revisions of "ImageData:setPixel"
m |
(Updated for 11.0) |
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Line 2: | Line 2: | ||
Valid x and y values start at 0 and go up to image width and height minus 1. | Valid x and y values start at 0 and go up to image width and height minus 1. | ||
+ | |||
+ | In versions prior to [[11.0]], color component values were within the range of 0 to 255 instead of 0 to 1. | ||
== Function == | == Function == | ||
=== Synopsis === | === Synopsis === | ||
Line 10: | Line 12: | ||
{{param|number|x|The position of the pixel on the x-axis.}} | {{param|number|x|The position of the pixel on the x-axis.}} | ||
{{param|number|y|The position of the pixel on the y-axis.}} | {{param|number|y|The position of the pixel on the y-axis.}} | ||
− | {{param|number|r|The red component (0- | + | {{param|number|r|The red component (0-1).}} |
− | {{param|number|g|The green component (0- | + | {{param|number|g|The green component (0-1).}} |
− | {{param|number|b|The blue component (0- | + | {{param|number|b|The blue component (0-1).}} |
− | {{param|number|a|The alpha component (0- | + | {{param|number|a|The alpha component (0-1).}} |
=== Returns === | === Returns === | ||
Nothing. | Nothing. | ||
Line 21: | Line 23: | ||
data = love.image.newImageData(32,1) | data = love.image.newImageData(32,1) | ||
for i=0, 31 do -- remember: start at 0 | for i=0, 31 do -- remember: start at 0 | ||
− | data:setPixel(i, 0, | + | data:setPixel(i, 0, 1, 1, 1, i / 31) |
end | end | ||
img = love.graphics.newImage(data) | img = love.graphics.newImage(data) |
Revision as of 20:27, 1 April 2018
Sets 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.
In versions prior to 11.0, color component values were within the range of 0 to 255 instead of 0 to 1.
Function
Synopsis
ImageData:setPixel( x, y, r, g, b, a )
Arguments
number x
- The position of the pixel on the x-axis.
number y
- The position of the pixel on the y-axis.
number r
- The red component (0-1).
number g
- The green component (0-1).
number b
- The blue component (0-1).
number a
- The alpha component (0-1).
Returns
Nothing.
Examples
Create a 32x1 pixel transparent-to-white gradient drawable image.
data = love.image.newImageData(32,1)
for i=0, 31 do -- remember: start at 0
data:setPixel(i, 0, 1, 1, 1, i / 31)
end
img = love.graphics.newImage(data)
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