Difference between revisions of "ImageData:setPixel"

(Add an example)
Line 16: Line 16:
 
=== Returns ===
 
=== Returns ===
 
Nothing.
 
Nothing.
 +
== Examples ==
 +
Create a 32x1 pixel transparent-to-white gradient [[Image|drawable image]].
 +
<source lang="lua">
 +
data = love.image.newImageData(32,1)
 +
for i=0, 31 do  -- remember: start at 0
 +
  data:setPixel(i, 1, 255, 255, 255, (i * 8))
 +
end
 +
img = love.graphics.newImage(data)
 +
</source>
 
== See Also ==
 
== See Also ==
 
* [[parent::ImageData]]
 
* [[parent::ImageData]]

Revision as of 18:39, 28 September 2011

Sets the color of a pixel.

Valid x and y values start at 0 and go up to image width and height minus 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 (0-255).
number g
The green component (0-255).
number b
The blue component (0-255).
number a
The alpha component (0-255).

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, 1, 255, 255, 255, (i * 8))
end
img = love.graphics.newImage(data)

See Also


Other Languages