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1d wave model for arduino
// Use if you want to force the software SPI subsystem to be used for some reason (generally, you don't)
// #define FASTLED_FORCE_SOFTWARE_SPI
// Use if you want to force non-accelerated pin access (hint: you really don't, it breaks lots of things)
// #define FASTLED_FORCE_SOFTWARE_SPI
// #define FASTLED_FORCE_SOFTWARE_PINS
#include <FastLED.h>
#include "rgbw.h"
// How many leds are in the strip?
#define NUM_LEDS 300
#define DATA_PIN 2
#define F_LOW 3 // number of antinodes
#define F_HIGH 18
#define OPEN_ENDS 2 // 0, 1 or 2
#define FADE_WIDTH 32
#define DELAY 50
#define BRIGHTNESS 255
#define XMAS 32
#define Serial NoSerial
struct NoSerial {
template<typename T> void begin(T) {}
template<typename T> void print(T) {}
template<typename T> void println(T) {}
bool operator!() { return false; }
} NoSerial;
// This is an array of leds. One item for each led in your strip.
CRGBW leds[NUM_LEDS];
int8_t u[NUM_LEDS+2];
int8_t v[NUM_LEDS+2];
template<typename T, size_t N>
void printArray(T (&a)[N]) {
Serial.print("[");
for (size_t x = 0; x<N; ++x) {
if (x) Serial.print(", ");
Serial.print(a[x]);
}
Serial.print("]\n");
}
inline int limit(int amt, int low, int high) {
int result = amt<low?low:amt>high?high:amt;
if (result != amt) {
Serial.print("Constrained: ");
Serial.print(amt);
Serial.print(" ");
Serial.print(low);
Serial.print(" ");
Serial.println(high);
}
return result;
}
// a() is a pseudo array for the initialization signal
// it is memory mapped into the leds array
const int a_len = NUM_LEDS*2+2;
int8_t& a(size_t i) {
if (i < NUM_LEDS) {
return (int8_t&)(leds[i].r);
}
if (i < NUM_LEDS*2) {
return (int8_t&)(leds[i-NUM_LEDS].g);
}
return (int8_t&)(leds[i-NUM_LEDS*2].b);
}
void printArrayA() {
Serial.print("[");
for (size_t x = 0; x<a_len; ++x) {
if (x) Serial.print(", ");
Serial.print(a(x));
}
Serial.print("]\n");
}
// This function sets up the leds and tells the controller about them
void setup() {
Serial.begin(115200);
while(!Serial);
randomSeed(analogRead(0));
// sanity check delay - allows reprogramming if accidently blowing power w/leds
//delay(2000);
FastLED.addLeds<SK6812, DATA_PIN, RGB>((CRGB*)leds, getRGBWsize(NUM_LEDS)); // GRB ordering is typical
FastLED.setBrightness(255);
memset(leds, 0, NUM_LEDS*4);
for (int x = 0; x<NUM_LEDS+2; ++x) {
u[x] = 0;
v[x] = 0;
}
// create a random complex spectrum in the desired frequency band
for (int f = F_LOW; f<F_HIGH+1; ++f) {
u[f] = random(-128,128); // amplitude
v[f] = random(-128,128); // phase
}
// construct the time signal from the spectrum into a()
for (int x = 0; x<a_len; ++x) {
double p = 0;
for (int f = F_LOW; f<F_HIGH+1; ++f) {
p += sin(PI*x*(2*f+OPEN_ENDS)/a_len+PI*v[f]/128)*(u[f]+128);
}
p /= (F_HIGH-F_LOW+1);
a(x) = limit(round(p), -128, 127);
}
for (int x = 0; x<NUM_LEDS+2; ++x) {
u[x] = 0;
v[x] = 0;
}
// fade in/out
for (int x = 0; x < FADE_WIDTH; ++x) {
a(x) = round(a(x) * (1.0-cos(PI*x/FADE_WIDTH))/2);
a(a_len-1-x) = round(a(a_len-1-x) * (1.0-cos(PI*x/FADE_WIDTH))/2);
}
printArrayA();
}
// This function runs over and over, and is where you do the magic to light
// your leds.
void loop() {
static int init_idx = 0;
static int u_corr = 0;
u[0] = OPEN_ENDS==2 ? u[1] : 0;
u[NUM_LEDS+1] = OPEN_ENDS>0 ? u[NUM_LEDS] : 0;
// feed initialization signal into wave model
if (init_idx < a_len) {
u[0] = a(init_idx);
a(init_idx) = 0;
++init_idx;
}
int8_t last_u = u[0];
int32_t sum = 0;
for (int x = 1; x<NUM_LEDS+1; ++x) {
int f = (last_u + u[x+1] - 2*u[x]);
v[x] = limit(v[x] + f, -128, 127);
last_u = u[x];
u[x] = limit(u[x] + v[x] + u_corr, -128, 127);
sum += u[x];
if (init_idx==a_len) { // initialization is done?
#ifdef XMAS
leds[x-1].w = (random8()||(random8()>XMAS))?leds[x-1].w*31/32:scale8_video(64, BRIGHTNESS);
leds[x-1].g = scale8(gamma8(u[x]), 32);
leds[x-1].r = gamma8(-u[x]);
#else
leds[x-1].w = scale8_video(gamma8(u[x]), 255);
#endif
//leds[x-1].b = gamma8(abs(v[x])-128);
}
}
sum /= NUM_LEDS;
if (init_idx==a_len) {
FastLED.show();
u_corr = OPEN_ENDS == 2 ? -sum : 0;
delay(DELAY);
}
//Serial.println(t2-t);
}
const uint8_t PROGMEM gamma_2_2_0to255_table[] = {
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, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6,
6, 7, 7, 7, 8, 8, 8, 9, 9, 9, 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, 22, 22, 23, 23, 24, 25, 25, 26, 26, 27, 28, 28, 29,
30, 30, 31, 32, 33, 33, 34, 35, 35, 36, 37, 38, 39, 39, 40, 41,
42, 43, 43, 44, 45, 46, 47, 48, 49, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71,
73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 87, 88, 89, 90,
91, 93, 94, 95, 97, 98, 99,100,102,103,105,106,107,109,110,111,
113,114,116,117,119,120,121,123,124,126,127,129,130,132,133,135,
137,138,140,141,143,145,146,148,149,151,153,154,156,158,159,161,
163,165,166,168,170,172,173,175,177,179,181,182,184,186,188,190,
192,194,196,197,199,201,203,205,207,209,211,213,215,217,219,221,
223,225,227,229,231,234,236,238,240,242,244,246,248,251,253,255
};
const uint8_t PROGMEM gamma_2_2_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 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, 12, 12, 12, 13,
13, 14, 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, 31, 32, 33, 33, 34, 35, 36, 36, 37, 38, 39, 39, 40, 41, 42,
43, 43, 44, 45, 46, 47, 48, 48, 49, 50, 51, 52, 53, 54, 55, 56,
57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72,
73, 74, 75, 77, 78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91,
92, 93, 95, 96, 97, 98,100,101,102,104,105,106,108,109,111,112,
113,115,116,118,119,120,122,123,125,126,128,129,131,132,134,135,
137,139,140,142,143,145,147,148,150,151,153,155,156,158,160,162,
163,165,167,168,170,172,174,176,177,179,181,183,185,186,188,190,
192,194,196,198,200,201,203,205,207,209,211,213,215,217,219,221,
223,225,227,229,232,234,236,238,240,242,244,246,248,251,253,255
};
const uint8_t PROGMEM gamma_2_4_0to255_table[] = {
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, 2,
2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4,
5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9,
9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 14, 14, 14, 15, 15,
16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 22, 22, 23, 23, 24,
24, 25, 26, 26, 27, 28, 28, 29, 30, 30, 31, 32, 32, 33, 34, 35,
35, 36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 48,
49, 50, 51, 52, 53, 53, 54, 55, 56, 57, 58, 59, 60, 62, 63, 64,
65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 80, 81, 82,
83, 85, 86, 87, 88, 90, 91, 92, 94, 95, 96, 98, 99,100,102,103,
105,106,108,109,111,112,114,115,117,118,120,121,123,124,126,127,
129,131,132,134,136,137,139,141,142,144,146,148,149,151,153,155,
156,158,160,162,164,166,167,169,171,173,175,177,179,181,183,185,
187,189,191,193,195,197,199,201,203,205,207,210,212,214,216,218,
220,223,225,227,229,232,234,236,239,241,243,246,248,250,253,255
};
const uint8_t PROGMEM gamma_2_4_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3,
3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 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, 12, 13, 13, 14, 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, 31, 32, 33, 33, 34, 35, 36,
36, 37, 38, 39, 39, 40, 41, 42, 43, 43, 44, 45, 46, 47, 48, 49,
50, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64,
65, 67, 68, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 80, 82, 83,
84, 85, 87, 88, 89, 90, 92, 93, 94, 96, 97, 98,100,101,102,104,
105,107,108,110,111,113,114,116,117,119,120,122,123,125,126,128,
130,131,133,134,136,138,139,141,143,144,146,148,150,151,153,155,
157,159,160,162,164,166,168,170,172,173,175,177,179,181,183,185,
187,189,191,193,195,197,199,201,203,206,208,210,212,214,216,218,
221,223,225,227,229,232,234,236,239,241,243,246,248,250,253,255
};
const uint8_t PROGMEM gamma_2_6_0to255_table[] = {
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, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 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, 31, 32, 33, 34, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42,
42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57,
58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 73, 75,
76, 77, 78, 80, 81, 82, 84, 85, 86, 88, 89, 90, 92, 93, 94, 96,
97, 99,100,102,103,105,106,108,109,111,112,114,115,117,119,120,
122,124,125,127,129,130,132,134,136,137,139,141,143,145,146,148,
150,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,
182,184,186,188,191,193,195,197,199,202,204,206,209,211,213,215,
218,220,223,225,227,230,232,235,237,240,242,245,247,250,252,255
};
const uint8_t PROGMEM gamma_2_6_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8,
8, 8, 9, 9, 9, 9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13,
13, 14, 14, 15, 15, 16, 16, 17, 17, 17, 18, 18, 19, 19, 20, 20,
21, 22, 22, 23, 23, 24, 24, 25, 26, 26, 27, 28, 28, 29, 30, 30,
31, 32, 32, 33, 34, 35, 35, 36, 37, 38, 38, 39, 40, 41, 42, 42,
43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 52, 53, 54, 55, 56, 57,
58, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75,
77, 78, 79, 80, 82, 83, 84, 86, 87, 88, 90, 91, 92, 94, 95, 96,
98, 99,101,102,104,105,107,108,110,111,113,114,116,118,119,121,
122,124,126,127,129,131,133,134,136,138,140,141,143,145,147,149,
151,152,154,156,158,160,162,164,166,168,170,172,174,176,178,180,
182,184,187,189,191,193,195,197,200,202,204,206,209,211,213,216,
218,220,223,225,227,230,232,235,237,240,242,245,247,250,252,255
};
const uint8_t PROGMEM gamma_2_8_0to255_table[] = {
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
};
const uint8_t PROGMEM gamma_2_8_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6,
6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11,
11, 11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 16, 16, 17, 17,
17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26,
26, 27, 28, 28, 29, 30, 30, 31, 32, 33, 33, 34, 35, 36, 36, 37,
38, 39, 40, 40, 41, 42, 43, 44, 45, 46, 47, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 69,
70, 71, 72, 74, 75, 76, 77, 79, 80, 81, 83, 84, 85, 87, 88, 90,
91, 92, 94, 95, 97, 98,100,101,103,104,106,108,109,111,112,114,
116,117,119,121,123,124,126,128,130,131,133,135,137,139,141,143,
145,147,148,150,152,154,156,159,161,163,165,167,169,171,173,175,
178,180,182,184,187,189,191,194,196,198,201,203,205,208,210,213,
215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255
};
const uint8_t PROGMEM gamma_3_0_0to255_table[] = {
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, 0, 0, 0, 0,
1, 1, 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, 6, 7, 7, 7, 8,
8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 12, 12, 12, 13, 13,
14, 14, 14, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21,
22, 22, 23, 23, 24, 25, 25, 26, 27, 27, 28, 29, 29, 30, 31, 32,
32, 33, 34, 35, 35, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45,
46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 60, 61, 62,
63, 64, 65, 67, 68, 69, 70, 72, 73, 74, 76, 77, 78, 80, 81, 82,
84, 85, 87, 88, 90, 91, 93, 94, 96, 97, 99,101,102,104,105,107,
109,111,112,114,116,118,119,121,123,125,127,129,131,132,134,136,
138,140,142,144,147,149,151,153,155,157,159,162,164,166,168,171,
173,175,178,180,182,185,187,190,192,195,197,200,202,205,207,210,
213,215,218,221,223,226,229,232,235,237,240,243,246,249,252,255
};
const uint8_t PROGMEM gamma_3_0_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3,
3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5,
5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9,
9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14,
15, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22,
23, 23, 24, 24, 25, 26, 26, 27, 27, 28, 29, 30, 30, 31, 32, 32,
33, 34, 35, 35, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45, 46,
47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 63,
64, 65, 66, 67, 69, 70, 71, 72, 74, 75, 76, 78, 79, 80, 82, 83,
85, 86, 87, 89, 90, 92, 93, 95, 96, 98,100,101,103,104,106,108,
109,111,113,115,116,118,120,122,124,125,127,129,131,133,135,137,
139,141,143,145,147,149,151,153,155,158,160,162,164,166,169,171,
173,175,178,180,183,185,187,190,192,195,197,200,202,205,208,210,
213,215,218,221,224,226,229,232,235,237,240,243,246,249,252,255
};
const uint8_t PROGMEM gamma_3_2_0to255_table[] = {
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, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3,
3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6,
6, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11,
11, 12, 12, 12, 13, 13, 14, 14, 14, 15, 15, 16, 16, 17, 17, 18,
18, 19, 19, 20, 21, 21, 22, 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, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56,
57, 59, 60, 61, 62, 63, 65, 66, 67, 68, 70, 71, 72, 74, 75, 76,
78, 79, 81, 82, 84, 85, 87, 88, 90, 91, 93, 95, 96, 98, 99,101,
103,105,106,108,110,112,113,115,117,119,121,123,125,127,129,131,
133,135,137,139,141,143,146,148,150,152,154,157,159,161,164,166,
168,171,173,176,178,181,183,186,188,191,194,196,199,202,204,207,
210,213,216,219,221,224,227,230,233,236,239,242,246,249,252,255
};
const uint8_t PROGMEM gamma_3_2_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7,
7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12,
12, 13, 13, 13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 18, 18, 19,
19, 20, 20, 21, 21, 22, 23, 23, 24, 24, 25, 26, 26, 27, 28, 28,
29, 30, 30, 31, 32, 33, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41,
42, 43, 44, 45, 46, 47, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57,
58, 59, 60, 62, 63, 64, 65, 67, 68, 69, 70, 72, 73, 74, 76, 77,
79, 80, 81, 83, 84, 86, 87, 89, 90, 92, 94, 95, 97, 98,100,102,
103,105,107,109,110,112,114,116,118,120,122,123,125,127,129,131,
133,135,137,140,142,144,146,148,150,153,155,157,159,162,164,166,
169,171,174,176,179,181,184,186,189,191,194,197,199,202,205,207,
210,213,216,219,222,224,227,230,233,236,239,242,246,249,252,255
};
const uint8_t PROGMEM gamma_3_4_0to255_table[] = {
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, 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, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 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, 12, 13, 13, 14, 14, 15, 15,
16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 23, 23, 24,
24, 25, 26, 26, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 36,
37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,
52, 53, 55, 56, 57, 58, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71,
72, 74, 75, 77, 78, 80, 81, 83, 84, 86, 87, 89, 90, 92, 94, 95,
97, 99,101,102,104,106,108,110,112,114,115,117,119,121,123,125,
128,130,132,134,136,138,141,143,145,147,150,152,154,157,159,162,
164,167,169,172,174,177,180,182,185,188,190,193,196,199,202,205,
208,210,213,216,219,223,226,229,232,235,238,242,245,248,252,255
};
const uint8_t PROGMEM gamma_3_4_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3,
3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6,
6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10,
10, 10, 11, 11, 12, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 25,
25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 36, 37,
37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52,
53, 54, 55, 56, 58, 59, 60, 61, 62, 64, 65, 66, 68, 69, 70, 72,
73, 74, 76, 77, 79, 80, 82, 83, 85, 86, 88, 89, 91, 93, 94, 96,
98,100,101,103,105,107,108,110,112,114,116,118,120,122,124,126,
128,130,132,134,137,139,141,143,145,148,150,152,155,157,160,162,
164,167,169,172,175,177,180,183,185,188,191,193,196,199,202,205,
208,211,214,217,220,223,226,229,232,235,238,242,245,248,252,255
};
const uint8_t PROGMEM gamma_3_6_0to255_table[] = {
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, 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, 1, 1, 1, 2, 2,
2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 4, 4,
4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7,
8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 12, 12, 12, 13,
13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 18, 18, 19, 20, 20, 21,
21, 22, 23, 23, 24, 24, 25, 26, 27, 27, 28, 29, 29, 30, 31, 32,
33, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 42, 43, 44, 46, 47,
48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 61, 62, 63, 64, 66,
67, 69, 70, 71, 73, 74, 76, 77, 79, 80, 82, 83, 85, 87, 88, 90,
92, 94, 95, 97, 99,101,103,104,106,108,110,112,114,116,118,120,
122,125,127,129,131,133,136,138,140,143,145,147,150,152,155,157,
160,162,165,168,170,173,176,179,181,184,187,190,193,196,199,202,
205,208,211,214,218,221,224,227,231,234,237,241,244,248,251,255
};
const uint8_t PROGMEM gamma_3_6_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3,
3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5,
5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8,
9, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14,
14, 15, 15, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22,
22, 23, 23, 24, 25, 25, 26, 27, 27, 28, 29, 30, 30, 31, 32, 33,
33, 34, 35, 36, 37, 38, 39, 40, 40, 41, 42, 43, 44, 45, 46, 47,
48, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 63, 64, 65, 66,
68, 69, 71, 72, 73, 75, 76, 78, 79, 81, 83, 84, 86, 87, 89, 91,
92, 94, 96, 98, 99,101,103,105,107,109,111,113,115,117,119,121,
123,125,127,129,132,134,136,138,141,143,145,148,150,153,155,158,
160,163,165,168,171,173,176,179,182,185,187,190,193,196,199,202,
205,208,211,215,218,221,224,227,231,234,238,241,244,248,251,255
};
const uint8_t PROGMEM gamma_3_8_0to255_table[] = {
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, 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, 1,
1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3,
3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6,
6, 6, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 11,
11, 12, 12, 12, 13, 13, 14, 14, 15, 15, 15, 16, 16, 17, 18, 18,
19, 19, 20, 20, 21, 21, 22, 23, 23, 24, 25, 25, 26, 27, 28, 28,
29, 30, 31, 31, 32, 33, 34, 35, 36, 37, 38, 38, 39, 40, 41, 42,
43, 44, 45, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 60, 61,
62, 64, 65, 66, 68, 69, 71, 72, 74, 75, 77, 78, 80, 82, 83, 85,
87, 88, 90, 92, 94, 96, 98, 99,101,103,105,107,109,111,113,115,
118,120,122,124,126,129,131,133,136,138,141,143,146,148,151,153,
156,158,161,164,167,169,172,175,178,181,184,187,190,193,196,199,
203,206,209,212,216,219,222,226,229,233,237,240,244,247,251,255
};
const uint8_t PROGMEM gamma_3_8_1to255_table[] = {
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4,
4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7,
7, 7, 8, 8, 8, 9, 9, 9, 9, 10, 10, 10, 11, 11, 11, 12,
12, 13, 13, 13, 14, 14, 15, 15, 15, 16, 16, 17, 17, 18, 18, 19,
20, 20, 21, 21, 22, 22, 23, 24, 24, 25, 26, 26, 27, 28, 28, 29,
30, 31, 32, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43,
44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60, 62,
63, 64, 66, 67, 69, 70, 72, 73, 75, 76, 78, 79, 81, 82, 84, 86,
87, 89, 91, 93, 94, 96, 98,100,102,104,106,108,110,112,114,116,
118,120,122,125,127,129,131,134,136,139,141,143,146,148,151,154,
156,159,162,164,167,170,173,175,178,181,184,187,190,193,196,200,
203,206,209,212,216,219,223,226,230,233,237,240,244,248,251,255
};
const uint8_t PROGMEM gamma_table[] = {
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
};
inline uint8_t gamma8(int8_t x) {
return scale8_video(
pgm_read_byte(&gamma_3_0_1to255_table[128+x]),
BRIGHTNESS
);
}
/* Helper file to support RGBW pixels with the FastLED library */
#include <FastLED.h>
struct CRGBW {
union {
struct {
union {
uint8_t g;
uint8_t green;
};
union {
uint8_t r;
uint8_t red;
};
union {
uint8_t b;
uint8_t blue;
};
union {
uint8_t w;
uint8_t white;
};
};
uint8_t _raw[4];
};
CRGBW(){}
CRGBW(uint8_t rd, uint8_t grn, uint8_t blu, uint8_t wht){
r = rd;
g = grn;
b = blu;
w = wht;
}
inline void operator = (const CRGB c) __attribute__((always_inline)){
this->r = c.r;
this->g = c.g;
this->b = c.b;
this->white = 0;
}
};
inline uint16_t getRGBWsize(uint16_t nleds){
uint16_t nbytes = nleds * 4;
if(nbytes % 3 > 0) return nbytes / 3 + 1;
else return nbytes / 3;
}
template<int SIZE>
class CRGBWArray : public CPixelView<CRGBW> {
CRGBW rawleds[SIZE];
public:
CRGBWArray() : CPixelView<CRGBW>(rawleds, SIZE) {}
using CPixelView::operator=;
};
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