98 lines
4.6 KiB
C
98 lines
4.6 KiB
C
#ifndef __INC_NOISE_H
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#define __INC_NOISE_H
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#include "FastLED.h"
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FASTLED_NAMESPACE_BEGIN
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///@file noise.h
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/// Noise functions provided by the library.
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///@defgroup Noise Noise functions
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///Simplex noise function definitions
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///@{
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/// @name scaled 16 bit noise functions
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///@{
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/// 16 bit, fixed point implementation of perlin's Simplex Noise. Coordinates are
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/// 16.16 fixed point values, 32 bit integers with integral coordinates in the high 16
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/// bits and fractional in the low 16 bits, and the function takes 1d, 2d, and 3d coordinate
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/// values. These functions are scaled to return 0-65535
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extern uint16_t inoise16(uint32_t x, uint32_t y, uint32_t z);
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extern uint16_t inoise16(uint32_t x, uint32_t y);
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extern uint16_t inoise16(uint32_t x);
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///@}
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/// @name raw 16 bit noise functions
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//@{
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/// 16 bit raw versions of the noise functions. These values are not scaled/altered and have
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/// output values roughly in the range (-18k,18k)
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extern int16_t inoise16_raw(uint32_t x, uint32_t y, uint32_t z);
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extern int16_t inoise16_raw(uint32_t x, uint32_t y);
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extern int16_t inoise16_raw(uint32_t x);
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///@}
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/// @name 8 bit scaled noise functions
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///@{
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/// 8 bit, fixed point implementation of perlin's Simplex Noise. Coordinates are
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/// 8.8 fixed point values, 16 bit integers with integral coordinates in the high 8
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/// bits and fractional in the low 8 bits, and the function takes 1d, 2d, and 3d coordinate
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/// values. These functions are scaled to return 0-255
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extern uint8_t inoise8(uint16_t x, uint16_t y, uint16_t z);
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extern uint8_t inoise8(uint16_t x, uint16_t y);
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extern uint8_t inoise8(uint16_t x);
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///@}
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/// @name 8 bit raw noise functions
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///@{
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/// 8 bit raw versions of the noise functions. These values are not scaled/altered and have
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/// output values roughly in the range (-70,70)
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extern int8_t inoise8_raw(uint16_t x, uint16_t y, uint16_t z);
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extern int8_t inoise8_raw(uint16_t x, uint16_t y);
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extern int8_t inoise8_raw(uint16_t x);
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///@}
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///@name raw fill functions
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///@{
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/// Raw noise fill functions - fill into a 1d or 2d array of 8-bit values using either 8-bit noise or 16-bit noise
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/// functions.
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///@param pData the array of data to write into
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///@param num_points the number of points of noise to compute
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///@param octaves the number of octaves to use for noise
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///@param x the x position in the noise field
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///@param y the y position in the noise field for 2d functions
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///@param scalex the scale (distance) between x points when filling in noise
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///@param scaley the scale (distance) between y points when filling in noise
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///@param time the time position for the noise field
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void fill_raw_noise8(uint8_t *pData, uint8_t num_points, uint8_t octaves, uint16_t x, int scalex, uint16_t time);
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void fill_raw_noise16into8(uint8_t *pData, uint8_t num_points, uint8_t octaves, uint32_t x, int scalex, uint32_t time);
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void fill_raw_2dnoise8(uint8_t *pData, int width, int height, uint8_t octaves, uint16_t x, int scalex, uint16_t y, int scaley, uint16_t time);
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void fill_raw_2dnoise16into8(uint8_t *pData, int width, int height, uint8_t octaves, uint32_t x, int scalex, uint32_t y, int scaley, uint32_t time);
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void fill_raw_2dnoise16(uint16_t *pData, int width, int height, uint8_t octaves, q88 freq88, fract16 amplitude, int skip, uint32_t x, int scalex, uint32_t y, int scaley, uint32_t time);
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void fill_raw_2dnoise16into8(uint8_t *pData, int width, int height, uint8_t octaves, q44 freq44, fract8 amplitude, int skip, uint32_t x, int scalex, uint32_t y, int scaley, uint32_t time);
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///@}
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///@name fill functions
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///@{
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/// fill functions to fill leds with values based on noise functions. These functions use the fill_raw_* functions as appropriate.
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void fill_noise8(CRGB *leds, int num_leds,
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uint8_t octaves, uint16_t x, int scale,
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uint8_t hue_octaves, uint16_t hue_x, int hue_scale,
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uint16_t time);
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void fill_noise16(CRGB *leds, int num_leds,
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uint8_t octaves, uint16_t x, int scale,
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uint8_t hue_octaves, uint16_t hue_x, int hue_scale,
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uint16_t time, uint8_t hue_shift=0);
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void fill_2dnoise8(CRGB *leds, int width, int height, bool serpentine,
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uint8_t octaves, uint16_t x, int xscale, uint16_t y, int yscale, uint16_t time,
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uint8_t hue_octaves, uint16_t hue_x, int hue_xscale, uint16_t hue_y, uint16_t hue_yscale,uint16_t hue_time,bool blend);
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void fill_2dnoise16(CRGB *leds, int width, int height, bool serpentine,
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uint8_t octaves, uint32_t x, int xscale, uint32_t y, int yscale, uint32_t time,
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uint8_t hue_octaves, uint16_t hue_x, int hue_xscale, uint16_t hue_y, uint16_t hue_yscale,uint16_t hue_time, bool blend, uint16_t hue_shift=0);
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FASTLED_NAMESPACE_END
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///@}
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#endif
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