Editing getPixel - FilterMeisterWiki

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= getPixel =
== Syntax ==
:{{int getPixel(int x, int y)}}
== Arguments ==
:'''x'''
::X-coordinate (in pixels) of the relative position (originating top-left at 0, 0) in the control where you want to retrieve a pixel color from.
:'''y'''
::Y-coordinate (in pixels) of the relative position (originating top-left at 0, 0) in the control where you want to retrieve a pixel color from.
== Returns ==
The 8-bit ((RGB)) color value of the pixel at the given co-ordinates as a single 32-bit integer.
== Description ==
Call getPixel to retrieve an individual pixel color from an ((OWNERDRAW)) control. First call ((startSetPixel)), then use getPixel, setPixel and any of the other Control drawing functions to draw to the control. Finish with a call to ((endSetPixel)). This function is not for getting pixels from the preview / final image; use ((src)) or ((pget)) for that instead.
== Example ==
<code>
%fml
ctl[0]: OWNERDRAW, Color=RGB(0,0,0), Size=(100,100)

OnFilterStart: {

// Get the size of the canvas
  int width, height;
  startSetPixel(0);
  width = getSetPixelWidth();
  height = getSetPixelHeight();

// Draw purple line at y = 100
  for (int xp = 0; xp < width; xp++) {
    setPixel(xp, 100, RGB(192,0,255));
  }

// Duplicate at y = 200 line at y = 100
  for (int xp = 0; xp < width; xp++) {
    setPixel(xp, 200, getPixel(xp, 100));
  }
  endSetPixel(0);

return false;
}
</code>
== See Also ==
((startSetPixel)), ((setPixel)), ((endSetPixel))
== Comments ==
''Everyone can add their comments about their experiences with this function here. Tips for using it are welcome, too.''

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