init()

void fl::FlowFieldFloat::Perlin2D::init

(

u32

seed

)

Definition at line 60 of file flowfield.cpp.hpp.

                                          {
    u8 p[256];
    for (int i = 0; i < 256; i++)
        p[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 = p[i];
        p[i] = p[j];
        p[j] = tmp;
    }
    for (int i = 0; i < 256; i++) {
        perm[i] = p[i];
        perm[i + 256] = p[i];
    }
}

References perm.