/*
Adapted from sutaburosu's AA_lines.ino code. Many thanks!
*/
#include <FastLED.h>
#define WIDTH 64
#define HEIGHT 26
#define NUM_LEDS (WIDTH * HEIGHT)
CRGB leds[NUM_LEDS + 1];
void setup()
{
FastLED.addLeds<NEOPIXEL, 3>(leds, NUM_LEDS);
Serial.begin(115200);
// Serial.print(sizeof(CRGB));
}
// This is probably not good programming, idk.
#define ENABLE_CROSSFADE true
#define DISABLE_CROSSFADE false
#define ANIM_FOREGROUND true
#define ANIM_BACKGROUND false
void loop()
{
int tslider = analogRead(A0);
int rslider = analogRead(A1);
int lslider = analogRead(A2);
int32_t mappedTSlider = map(tslider,0,1024,-16384,16384);
float mappedRSlider = fmap(rslider,0,1024,-8.0,8.0);
int mappedLSlider = map(lslider,0,1024,0,20);
sup(0.0,mappedTSlider,mappedLSlider,RainbowColors_p, LINEARBLEND,ANIM_BACKGROUND,DISABLE_CROSSFADE);
FastLED.show();
}
uint16_t XY(uint8_t x, uint8_t y) {
if (x >= WIDTH) return NUM_LEDS;
if (y >= HEIGHT) return NUM_LEDS;
return y * WIDTH + x;
}
void crossfade(CRGB *a, const CRGB *b, uint8_t amount) {
uint8_t rev = 255 - amount;
a->red = (a->red * amount + b->red * rev) >> 8;
a->green = (a->green * amount + b->green * rev) >> 8;
a->blue = (a->blue * amount + b->blue * rev) >> 8;
}
void qaddColors(CRGB *a, const CRGB *b) {
a->red = qadd8(a->red,b->red);
a->green = qadd8(a->green,b->green);
a->blue = qadd8(a->blue,b->blue);
}
void sup(float rotationSpeed, int32_t translationSpeed, uint8_t lineWidth, CRGBPalette16 palette, TBlendType blendType, boolean foreground, boolean enableCrossfade) {
static boolean firstTimeZero = false;
static uint32_t lastMark = millis();
static uint8_t lastIndex4bit = 15;
// static uint32_t lastMillis = 32767/2; // int16_t 32767/2 (for rotationspeed=0 test)
uint32_t xHueDelta = (int32_t)cos16(32767) * lineWidth;
// uint32_t yHueDelta = (int32_t)sin16(lastMillis) * lineWidth;
for (byte y = 0; y < HEIGHT; y++) {
uint32_t lineStartHue = beat16(30) ;
uint32_t pixelHue = lineStartHue << 7;
uint8_t index_4bit = lineStartHue >> 12;
// 60,000ms / 428.57 ms per beat/quarter note = 140 BPM
if( index_4bit == 0 && firstTimeZero ) {
uint16_t difference = millis() - lastMark;
Serial.print(difference);
Serial.print("ms ");
Serial.print(60000/difference);
Serial.print(" bpm ");
Serial.println();
CRGB lineColor = ColorFromPaletteExtended(palette, pixelHue >> 7, 255, blendType);
Serial.print(" red: ");
Serial.print(lineColor.red);
Serial.print(" green: ");
Serial.print(lineColor.green);
Serial.print(" blue: ");
Serial.print(lineColor.blue);
Serial.println();
// lastIndex4bit = index_4bit;
lastMark = millis();
firstTimeZero = false;
delay(500);
}
else if( index_4bit != 0 ) {
firstTimeZero = true; // reset flag
}
for (byte x = 0; x < WIDTH; x++) {
// leds[XY(x, y)] = ColorFromPalette(palette, pixelHue >> 15, 255, blendType);
leds[XY(x, y)] = ColorFromPaletteExtended(palette, pixelHue >> 7, 255, blendType);
pixelHue += xHueDelta;
}
}
}
// from: https://github.com/FastLED/FastLED/pull/202
CRGB ColorFromPaletteExtended(const CRGBPalette16& pal, uint16_t index, uint8_t brightness, TBlendType blendType) {
// Extract the four most significant bits of the index as a palette index.
uint8_t index_4bit = (index >> 12);
// Calculate the 8-bit offset from the palette index.
uint8_t offset = (uint8_t)(index >> 4);
// Get the palette entry from the 4-bit index
const CRGB* entry = &(pal[0]) + index_4bit;
uint8_t red1 = entry->red;
uint8_t green1 = entry->green;
uint8_t blue1 = entry->blue;
uint8_t blend = offset && (blendType != NOBLEND);
if (blend) {
if (index_4bit == 15) {
entry = &(pal[0]);
} else {
entry++;
}
// Calculate the scaling factor and scaled values for the lower palette value.
uint8_t f1 = 255 - offset;
red1 = scale8_LEAVING_R1_DIRTY(red1, f1);
green1 = scale8_LEAVING_R1_DIRTY(green1, f1);
blue1 = scale8_LEAVING_R1_DIRTY(blue1, f1);
// Calculate the scaled values for the neighbouring palette value.
uint8_t red2 = entry->red;
uint8_t green2 = entry->green;
uint8_t blue2 = entry->blue;
red2 = scale8_LEAVING_R1_DIRTY(red2, offset);
green2 = scale8_LEAVING_R1_DIRTY(green2, offset);
blue2 = scale8_LEAVING_R1_DIRTY(blue2, offset);
cleanup_R1();
// These sums can't overflow, so no qadd8 needed.
red1 += red2;
green1 += green2;
blue1 += blue2;
}
if (brightness != 255) {
// nscale8x3_video(red1, green1, blue1, brightness);
nscale8x3(red1, green1, blue1, brightness);
}
return CRGB(red1, green1, blue1);
}
float fmap(float x, float a, float b, float c, float d)
{
float f=x/(b-a)*(d-c)+c;
return f;
}
String uint64ToString(uint64_t input) {
String result = "";
uint8_t base = 10;
do {
char c = input % base;
input /= base;
if (c < 10)
c +='0';
else
c += 'A' - 10;
result = c + result;
} while (input);
return result;
}