/*
Adapted from sutaburosu's AA_lines.ino code. Many thanks!
*/
#include <FastLED.h>
#define WIDTH 64
#define HEIGHT 13
#define CANVAS_HEIGHT 64
#define RASTER_SPACING 5
#define NUM_LEDS (WIDTH * HEIGHT)
// CRGB bigCanvas[CANVAS_NUMLEDS + 1];
CRGB leds[NUM_LEDS + 1];
CRGBPalette16 rainbowPalette = {
0xFF0000, 0x7F0000, 0xAB5500, 0x552A00, 0xABAB00, 0x555500, 0x00FF00, 0x007F00,
0x00AB55, 0x00552A, 0x0000FF, 0x00007F, 0x5500AB, 0x2A0055, 0xAB0055, 0x55002A
};
CRGBPalette16 greenStripe = {
0x00FF00, 0x00FF00, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000
};
CRGBPalette16 yellowStripe = {
0xFFFF00, 0xFFFF00, 0xFFFF00, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000
};
CRGBPalette16 fadeFactorPalette = {
0xFF0000, 0xFF0000, 0xFF0000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000
};
CRGBPalette16 redStripe = {
0xFF0000, 0xFF0000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000,
0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000
};
boolean _twist = false;
void setup()
{
FastLED.addLeds<NEOPIXEL, 3>(leds, NUM_LEDS);
Serial.begin(115200);
Serial.print(sizeof(CRGB));
}
void loop()
{
sup(1,148,5,HeatColors_p, LINEARBLEND);
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;
}
// With thanks to Steve Dommett; github.com/sutaburosu
void sup(uint8_t rotationSpeed, uint8_t translationSpeed, uint8_t lineWidth, CRGBPalette16 palette, TBlendType blendType) {
uint32_t yHueDelta ;
uint32_t xHueDelta ;
float rotationSpeedFloat = fmap((float)rotationSpeed,(float)0,(float)255,-6.0,6.0); // Between -6 and 6
int16_t mappedTranslationSpeed = map(translationSpeed,0,255,-2<<12,2<<12); // Between -2^13 - 2^13 (higher is too fast)
uint32_t ms = millis();
yHueDelta = (int32_t)sin16((int16_t)round(ms * 1.5 * rotationSpeedFloat)) * lineWidth;
xHueDelta = (int32_t)cos16((int16_t)round(ms * rotationSpeedFloat)) * lineWidth;
int32_t startHue = ms * mappedTranslationSpeed;
int32_t lineStartHue = startHue - (CANVAS_HEIGHT + 2) / 2 * yHueDelta;
for (byte y = 0; y < CANVAS_HEIGHT; y++) {
uint32_t pixelHue = lineStartHue - (WIDTH + 2) / 2 * xHueDelta;
uint32_t xhd = xHueDelta;
lineStartHue += yHueDelta;
for (byte x = 0; x < WIDTH; x++) {
if( y % RASTER_SPACING == 0 ) {
leds[XY(x, y/RASTER_SPACING)] = 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;
}