GetPixel

CATResult CATImage::GetPixel ( CATInt32  x, CATInt32  y, unsigned char &  r, unsigned char &  g, unsigned char &  b, unsigned char &  a   ) const GetPixel() retrieves the red, green, blue, and alpha values for a specified pixel. This is for convenience and prototyping - for high-speed image processing you'll need to work more directly with the image buffer. Parameters: x  - x position within the image of the pixel y  - y position within the image of the pixel r  - receives the red value of the pixel g  - receives the green value of the pixel b  - receives the blue value of the pixel a  - receives the alpha values of the pixel Returns: CATResult result code. CAT_SUCCESS on success. See also: SetPixel() Definition at line 813 of file CATImage.cpp. References AbsWidth(), CAT_ERR_IMAGE_EMPTY, CAT_ERR_IMAGE_OUT_OF_RANGE, CAT_SUCCESS, CATASSERT, CATRESULT, fData, fHeight, fWidth, kBytesPerPixel, XOffsetAbs(), and YOffsetAbs(). Referenced by GetPixel().

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