Writing bits to a pixel's color channel

Question

I take the red component of the color in this way:

int clr = needlePixels[i]; int red = (clr & 0x00ff0000) >> 16;

Then I perform some actions on the bits of the red variable. How to write the modified color component back to the variable clr ?

Vladimir Martyanov Vladimir Martyanov 9,266 four 17 34 · Accepted Answer · 2016-04-03T10:35:39

 clr = (clr & 0xFF00FFFF) | (red << 16)

Like this (if not messed up). We reset the target bits and then set them from red.

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