Difference between revisions of "Canvas:getPixel"
(Created page with "{{newin|0.9.0|090|type=function}} 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. == Fu...") |
m (Added performance notice) |
||
| Line 3: | Line 3: | ||
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. | ||
| + | |||
| + | {{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 === | ||
Revision as of 00:57, 11 August 2014
| Available since LÖVE 0.9.0 |
| This function is not supported in earlier versions. |
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).
See Also
Other Languages
Dansk –
Deutsch –
English –
Español –
Français –
Indonesia –
Italiano –
Lietuviškai –
Magyar –
Nederlands –
Polski –
Português –
Română –
Slovenský –
Suomi –
Svenska –
Türkçe –
Česky –
Ελληνικά –
Български –
Русский –
Српски –
Українська –
עברית –
ไทย –
日本語 –
正體中文 –
简体中文 –
Tiếng Việt –
한국어
More info
