init_fade_lut()

void fl::perlin_s16x16::init_fade_lut ( fl::i32 * table )

static

Definition at line 14 of file perlin_s16x16.cpp.hpp.

                                              {
    for (int i = 0; i <= 256; i++) {
        fl::i64 t = static_cast<fl::i64>(i) * (HP_ONE / 256);
        fl::i64 t2 = (t * t) >> HP_BITS;
        fl::i64 t3 = (t2 * t) >> HP_BITS;
        fl::i64 inner = (t * (6LL * HP_ONE)) >> HP_BITS;
        inner -= 15LL * HP_ONE;
        inner = (t * inner) >> HP_BITS;
        inner += 10LL * HP_ONE;
        table[i] = static_cast<fl::i32>((t3 * inner) >> HP_BITS);
    }
}

References HP_BITS, HP_ONE, and fl::t.

Referenced by fl::FlowFieldFP::FlowFieldFP(), and fl::anonymous_namespace{chasing_spirals.cpp.hpp}::setupChasingSpiralFrame().

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