Thread: how, using Math from differents HBITMAP's, combine the pixels for effects?

i'm sorry, but can you explain better your function?

Code:

Pixel alphaCompositePixel(Pixel p1, Pixel p2, Byte alpha = MaxAlpha) 
{    
          double a1f = double(p1.a) / MaxAlpha,
           a2f = double(p2.a) / MaxAlpha,
           a0f = a1f + a2f * (1.0 - a1f);
    return {
        Byte((p1.r * a1f + p2.r * a2f * (1.0 - a1f)) / a0f),
        Byte((p1.g * a1f + p2.g * a2f * (1.0 - a1f)) / a0f),
        Byte((p1.b * a1f + p2.b * a2f * (1.0 - a1f)) / a0f),
        alpha
    };
}

maybe i can make my own function correctly