easeInSine8()

u8 fl::easeInSine8

(

u8

i

)

8-bit sine ease-in function Takes an input value 0-255 and returns an eased value 0-255 Smooth sinusoidal acceleration

Definition at line 142 of file ease.cpp.hpp.

                     {
 
    static const u8 easeInSineTable[256] FL_PROGMEM = {
        0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   0,   1,   1,   1,
        1,   1,   1,   1,   2,   2,   2,   2,   2,   3,   3,   3,   3,   4,
        4,   4,   4,   5,   5,   5,   6,   6,   6,   7,   7,   7,   8,   8,
        8,   9,   9,   10,  10,  11,  11,  12,  12,  12,  13,  13,  14,  14,
        15,  16,  16,  17,  17,  18,  18,  19,  20,  20,  21,  21,  22,  23,
        23,  24,  25,  25,  26,  27,  27,  28,  29,  30,  30,  31,  32,  33,
        33,  34,  35,  36,  37,  37,  38,  39,  40,  41,  42,  42,  43,  44,
        45,  46,  47,  48,  49,  50,  51,  52,  52,  53,  54,  55,  56,  57,
        58,  59,  60,  61,  62,  63,  64,  65,  67,  68,  69,  70,  71,  72,
        73,  74,  75,  76,  77,  79,  80,  81,  82,  83,  84,  86,  87,  88,
        89,  90,  91,  93,  94,  95,  96,  98,  99,  100, 101, 103, 104, 105,
        106, 108, 109, 110, 112, 113, 114, 115, 117, 118, 119, 121, 122, 123,
        125, 126, 127, 129, 130, 132, 133, 134, 136, 137, 139, 140, 141, 143,
        144, 146, 147, 148, 150, 151, 153, 154, 156, 157, 159, 160, 161, 163,
        164, 166, 167, 169, 170, 172, 173, 175, 176, 178, 179, 181, 182, 184,
        185, 187, 188, 190, 191, 193, 194, 196, 197, 199, 200, 202, 204, 205,
        207, 208, 210, 211, 213, 214, 216, 217, 219, 221, 222, 224, 225, 227,
        228, 230, 231, 233, 235, 236, 238, 239, 241, 242, 244, 246, 247, 249,
        250, 252, 253, 255};
 
    // ease-in sine: 1 - cos(t * π/2)
    // Handle boundary conditions explicitly
    return FL_PGM_READ_BYTE_NEAR(&easeInSineTable[i]);
}

References FL_PGM_READ_BYTE_NEAR, and FL_PROGMEM.

Referenced by ease8(), and ease8().

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