initPerm256()

void fl::FlowFieldFP::initPerm256 ( u8 * perm, u32 seed )

staticprivate

Definition at line 491 of file flowfield.cpp.hpp.

                                                {
    for (int i = 0; i < 256; i++)
        perm[i] = (u8)i;
    u32 s = seed;
    for (int i = 255; i > 0; i--) {
        s = s * 1664525u + 1013904223u;
        int j = (int)((s >> 16) % (u32)(i + 1));
        u8 tmp = perm[i];
        perm[i] = perm[j];
        perm[j] = tmp;
    }
}

Referenced by FlowFieldFP().

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