easeOutCubic16()

u16 fl::easeOutCubic16

(

u16

i

)

16-bit cubic ease-out function Takes an input value 0-65535 and returns an eased value 0-65535

Definition at line 252 of file ease.cpp.

                          {
    // ease-out cubic: 1 - (1-t)³
    // For 16-bit: y = MAX - (MAX-i)³ / MAX²
    constexpr u32 MAX = 0xFFFF;                // 65535
    constexpr fl::u64 DENOM = (fl::u64)MAX * MAX; // 65535²
    constexpr fl::u64 ROUND = DENOM >> 1;          // for rounding
 
    fl::u64 d = MAX - i;      // (MAX - i)
    fl::u64 cube = d * d * d; // (MAX-i)³
    fl::u64 num = cube + ROUND;
    return u16(MAX - (num / DENOM));
}

References MAX.

Referenced by ease16(), and ease16().

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