getPaletteIndex()

uint8_t getPaletteIndex	(	uint32_t	millis32,
		int	i,
		int	j,
		uint32_t	y_speed )

Definition at line 79 of file FireMatrix.ino.

                                                                           {
    // get palette index
    uint16_t scale = scaleXY.as<uint16_t>();
    uint16_t x = i * scale;
    uint32_t y = j * scale + y_speed;
    uint16_t z = millis32 / invSpeedZ.as<uint16_t>();
    uint16_t noise16 = inoise16(x << 8, y << 8, z << 8);
    uint8_t noise_val = noise16 >> 8;
    int8_t subtraction_factor = abs8(j - (WIDTH - 1)) * 255 / (WIDTH - 1);
    return qsub8(noise_val, subtraction_factor);
}

References abs8(), inoise16(), invSpeedZ, qsub8(), scale, scaleXY, WIDTH, x, y, y_speed, and z.

Referenced by loop().

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