Functions
char *	dtoa (double input, char *buffer, int precision)
	Homebrew C function to convert double precision floats to char*. (Arduino Forum link) More...

Variables
void(*	anim_func )(PixieChroma *_p, float delta)
	Used to store the pointer to any preset/custom animation functions the library needs to call during show();. More...

const int8_t xy_template[77]	PROGMEM
	Used as a template by calc_xy() to build the XY coordinate map for accessing 1D LEDS in a 2D context. More...

const uint8_t	gamma8 []
	Used as a fast lookup table for gamma correction. More...

Detailed Description

Contains utility arrays/functions for internal use, such as the gamma correction LUT.

Last Updated by Connor Nishijima on 4/14/22

Definition in file pixie_utility.h.

Function Documentation

◆ dtoa()

char * dtoa	(	double	input,
		char *	buffer,
		int	precision
	)

Homebrew C function to convert double precision floats to char*. (Arduino Forum link)

Parameters

input	Double value to convert
buffer	char* to store resulting string in
precision	How many places after the decimal point will be converted

Returns: A char array equivalent of the input double

Definition at line 64 of file pixie_utility.h.

Variable Documentation

◆ anim_func

void(* anim_func) (PixieChroma *_p, float delta)	(	PixieChroma *	_p,
		float	delta
	)

Used to store the pointer to any preset/custom animation functions the library needs to call during show();.

Definition at line 19 of file pixie_utility.h.

◆ PROGMEM

const int8_t xy_template [77] PROGMEM

Initial value:

= {  
    -2, -2, -2, -2, -2, -2, -2,
    -2, -2, -2, -2, -2, -2, -2,
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,  
    -2, -1, -1, -1, -1, -1, -2,
    -2, -2, -2, -2, -2, -2, -2,
    -2, -2, -2, -2, -2, -2, -2
}

Used as a template by calc_xy() to build the XY coordinate map for accessing 1D LEDS in a 2D context.

Definition at line 22 of file pixie_utility.h.

◆ gamma8

const uint8_t gamma8[]

Initial value:

= {
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  2,  2,  2,  2,  2,  2,  2,
    2,  3,  3,  3,  3,  3,  3,  3,  4,  4,  4,  4,  4,  5,  5,  5,
    5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  9,  9,  9,  10,
    10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
    17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
    25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
    37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
    51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
    69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
    90, 92, 93, 95, 96, 98, 99, 101,102,104,105,107,109,110,112,114,
    115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
    144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
    177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
    215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255
}

Used as a fast lookup table for gamma correction.

Definition at line 37 of file pixie_utility.h.

Functions