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Integer to Byte


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  • 2 weeks later...
I'm working on a grayscale algorithm, and I need to know how to convert an integer to a byte value. How can I do this?

If you working with colors then proper way is using ColorBgra class. (properties .R, .G, .B, .A)

ColorBgra srcColor = srcArgs.Surface[x, y];

Byte grayByte = (byte)((double)srcColor.R * 0.299 + (double)srcColor.G * 0.587 + (double)srcColor.B * 0.114);

ColorBgra destColor;
destColor.R = destColor.G = destColor.B = grayByte;
destColor.A = 255;

In generally you can use divide, modulo and cast operations.

uint intVal = 0xAABBCCDD;
byte byteR = (byte)((intVal / (256 * 256 * 256)) % 256); // AA
byte byteG = (byte)((intVal / (256 * 256      )) % 256); // BB
byte byteB = (byte)((intVal / (256            )) % 256); // CC
byte byteA = (byte)((intVal                    ) % 256); // DD

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