init_fade_lut()

void fl::perlin_s8x8::init_fade_lut ( fl::i32 * table )

static

Definition at line 14 of file perlin_s8x8.cpp.hpp.

                                            {
    for (int i = 0; i <= 256; i++) {
        fl::i16 t = static_cast<fl::i16>((i * HP_ONE) / 256);
        fl::i16 t2 = static_cast<fl::i16>((static_cast<fl::i32>(t) * t) >> HP_BITS);
        fl::i16 t3 = static_cast<fl::i16>((static_cast<fl::i32>(t2) * t) >> HP_BITS);
        fl::i16 inner = static_cast<fl::i16>((static_cast<fl::i32>(t) * (6 * HP_ONE)) >> HP_BITS);
        inner -= 15 * HP_ONE;
        inner = static_cast<fl::i16>((static_cast<fl::i32>(t) * inner) >> HP_BITS);
        inner += 10 * HP_ONE;
        table[i] = static_cast<fl::i32>((static_cast<fl::i32>(t3) * inner) >> HP_BITS);
    }
}

References HP_BITS, HP_ONE, and fl::t.