/*
Adapted from sutaburosu's AA_lines.ino code. Many thanks!
*/
#include <FastLED.h>
#define WIDTH 16
#define HEIGHT 16
#define CANVAS_HEIGHT 32
#define RASTER_SPACING 2
#define NUM_LEDS (WIDTH * HEIGHT)
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 = {
0xAA0000, 0xAA0000, 0xAA0000, 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
};
DEFINE_GRADIENT_PALETTE( AndyGIlmore2 ) {
0, 111, 82, 126,
37, 111, 82, 126,
74, 148, 136, 170,
97, 186, 191, 213,
120, 220, 222, 234,
126, 254, 254, 255,
133, 210, 160, 174,
157, 167, 67, 93,
181, 124, 34, 48,
218, 80, 0, 3,
255, 80, 0, 3};
DEFINE_GRADIENT_PALETTE( Andy_GIlmore_2_gp ) {
0, 12, 0, 1,
36, 12, 0, 1,
73, 39, 3, 3,
98, 84, 13, 20,
122, 153, 91, 98,
128, 252,252,255,
135, 173,187,205,
158, 112,135,162,
181, 61, 63, 92,
218, 29, 21, 43,
255, 29, 21, 43};
boolean _twist = false;
void setup()
{
FastLED.addLeds<NEOPIXEL, 3>(leds, NUM_LEDS);
FastLED.setCorrection(UncorrectedColor);
FastLED.setTemperature(UncorrectedTemperature);
Serial.begin(115200);
}
// 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()
{
// parameter values are 0-255
sup(95,110,3,Andy_GIlmore_2_gp, LINEARBLEND,ANIM_BACKGROUND,DISABLE_CROSSFADE);
sup(150,150,6,redStripe, LINEARBLEND,ANIM_FOREGROUND,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);
}
// With thanks to Steve Dommett; github.com/sutaburosu
void sup(uint8_t rotationSpeed, uint8_t translationSpeed, uint8_t lineWidth, CRGBPalette16 palette, TBlendType blendType, boolean foreground, boolean enableCrossfade) {
uint32_t yHueDelta ;
uint32_t xHueDelta ;
static uint32_t lastMillis = 16383; // int16_t 32767/2 (for rotationspeed=0 test)
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();
if( rotationSpeedFloat != 0 ) {
yHueDelta = (int32_t)sin16((int16_t)round(ms * rotationSpeedFloat)) * lineWidth;
xHueDelta = (int32_t)cos16((int16_t)round(ms * rotationSpeedFloat)) * lineWidth;
lastMillis = ms;
} else {
yHueDelta = (int32_t)sin16(lastMillis) * lineWidth;
xHueDelta = (int32_t)cos16(lastMillis) * lineWidth;
}
int32_t startHue = ms * mappedTranslationSpeed;
int32_t lineStartHue = startHue - (CANVAS_HEIGHT + 2) / 2 * yHueDelta;
int16_t yd2 = sin16(ms * 3) / 4;
int16_t xd2 = sin16(ms * 7) / 4;
for (byte y = 0; y < CANVAS_HEIGHT; y++) {
uint32_t pixelHue = lineStartHue - (WIDTH + 2) / 2 * xHueDelta;
uint32_t xhd = xHueDelta;
lineStartHue += yHueDelta;
if( _twist ) { yHueDelta += yd2; }
for (byte x = 0; x < WIDTH; x++) {
if( y % RASTER_SPACING == 0 ) {
int ledsY = y/RASTER_SPACING;
if( foreground ) {
if( enableCrossfade ) {
CRGB fadeFactor = ColorFromPaletteExtended(fadeFactorPalette, pixelHue >> 7, 255, LINEARBLEND);
uint8_t this_fade = 255 - fadeFactor.red;
crossfade(&leds[XY(x, ledsY)], &palette[0], this_fade);
} else {
CRGB color2 = ColorFromPaletteExtended(palette, pixelHue >> 7, 255, LINEARBLEND);
qaddColors(&leds[XY(x, ledsY)], &color2);
}
} else {
leds[XY(x, ledsY)] = ColorFromPaletteExtended(palette, pixelHue >> 7, 255, blendType);
}
}
if( _twist ) { xhd += xd2; }
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;
}