Difference between revisions of "Canvas:getPixel"
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Gets the pixel at the specified position from a Canvas. | Gets the pixel at the specified position from a Canvas. | ||
Valid x and y values start at 0 and go up to canvas width and height minus 1. | Valid x and y values start at 0 and go up to canvas width and height minus 1. | ||
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| + | {{notice|This function can be very slow: it can cause the CPU to wait for the GPU to finish all the work currently in its queue, which can be a whole frame's worth (or more.)}} | ||
== Function == | == Function == | ||
=== Synopsis === | === Synopsis === | ||
Latest revision as of 16:30, 27 December 2015
| Available since LÖVE 0.9.0 and removed in LÖVE 0.10.0 |
| Use Canvas:newImageData instead. |
Gets the pixel at the specified position from a Canvas.
Valid x and y values start at 0 and go up to canvas width and height minus 1.
|
This function can be very slow: it can cause the CPU to wait for the GPU to finish all the work currently in its queue, which can be a whole frame's worth (or more.) |
Function
Synopsis
r, g, b, a = Canvas:getPixel( x, y )
Arguments
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).
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