Merge pull request #1108 from xxv/xxv-dancing-shadows
Add Dancing Shadows effect
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142
wled00/FX.cpp
142
wled00/FX.cpp
@ -3570,3 +3570,145 @@ uint16_t WS2812FX::mode_chunchun(void)
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}
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return FRAMETIME;
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}
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typedef struct Spotlight {
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float speed;
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uint8_t colorIdx;
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int16_t position;
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unsigned long lastUpdateTime;
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uint8_t width;
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uint8_t type;
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} spotlight;
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#define SPOT_TYPE_SOLID 0
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#define SPOT_TYPE_GRADIENT 1
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#define SPOT_TYPE_2X_GRADIENT 2
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#define SPOT_TYPE_2X_DOT 3
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#define SPOT_TYPE_3X_DOT 4
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#define SPOT_TYPE_4X_DOT 5
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#define SPOT_TYPES_COUNT 6
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/*
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* Spotlights moving back and forth that cast dancing shadows.
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* Shine this through tree branches/leaves or other close-up objects that cast
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* interesting shadows onto a ceiling or tarp.
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*
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* By Steve Pomeroy @xxv
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*/
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uint16_t WS2812FX::mode_dancing_shadows(void)
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{
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uint8_t numSpotlights = map(SEGMENT.intensity, 0, 255, 2, 50);
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bool initialize = SEGENV.aux0 != numSpotlights;
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SEGENV.aux0 = numSpotlights;
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uint16_t dataSize = sizeof(spotlight) * numSpotlights;
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if (!SEGENV.allocateData(dataSize)) return mode_static(); //allocation failed
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Spotlight* spotlights = reinterpret_cast<Spotlight*>(SEGENV.data);
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fill(BLACK);
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unsigned long time = millis();
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bool respawn = false;
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for (uint8_t i = 0; i < numSpotlights; i++) {
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if (!initialize) {
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// advance the position of the spotlight
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int16_t delta = (float)(time - spotlights[i].lastUpdateTime) *
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(spotlights[i].speed * ((1.0 + SEGMENT.speed)/100.0));
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if (abs(delta) >= 1) {
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spotlights[i].position += delta;
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spotlights[i].lastUpdateTime = time;
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}
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respawn = (spotlights[i].speed > 0.0 && spotlights[i].position > (SEGLEN + 2))
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|| (spotlights[i].speed < 0.0 && spotlights[i].position < -(spotlights[i].width + 2));
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}
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if (initialize || respawn) {
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spotlights[i].colorIdx = random8();
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spotlights[i].width = random8(1, 10);
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spotlights[i].speed = 1.0/random8(4, 50);
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if (initialize) {
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spotlights[i].position = random16(SEGLEN);
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spotlights[i].speed *= random8(2) ? 1.0 : -1.0;
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} else {
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if (random8(2)) {
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spotlights[i].position = SEGLEN + spotlights[i].width;
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spotlights[i].speed *= -1.0;
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}else {
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spotlights[i].position = -spotlights[i].width;
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}
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}
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spotlights[i].lastUpdateTime = time;
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spotlights[i].type = random8(SPOT_TYPES_COUNT);
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}
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uint32_t color = color_from_palette(spotlights[i].colorIdx, false, false, 0);
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int start = spotlights[i].position;
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if (spotlights[i].width <= 1) {
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if (start >= 0 && start < SEGLEN) {
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blendPixelColor(start, color, 128);
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}
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} else {
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switch (spotlights[i].type) {
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case SPOT_TYPE_SOLID:
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for (uint8_t j = 0; j < spotlights[i].width; j++) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color, 128);
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}
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}
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break;
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case SPOT_TYPE_GRADIENT:
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for (uint8_t j = 0; j < spotlights[i].width; j++) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color,
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cubicwave8(map(j, 0, spotlights[i].width - 1, 0, 255)));
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}
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}
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break;
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case SPOT_TYPE_2X_GRADIENT:
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for (uint8_t j = 0; j < spotlights[i].width; j++) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color,
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cubicwave8(2 * map(j, 0, spotlights[i].width - 1, 0, 255)));
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}
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}
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break;
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case SPOT_TYPE_2X_DOT:
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for (uint8_t j = 0; j < spotlights[i].width; j += 2) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color, 128);
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}
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}
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break;
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case SPOT_TYPE_3X_DOT:
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for (uint8_t j = 0; j < spotlights[i].width; j += 3) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color, 128);
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}
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}
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break;
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case SPOT_TYPE_4X_DOT:
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for (uint8_t j = 0; j < spotlights[i].width; j += 4) {
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if ((start + j) >= 0 && (start + j) < SEGLEN) {
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blendPixelColor(start + j, color, 128);
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}
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}
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break;
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}
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}
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}
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return FRAMETIME;
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}
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11
wled00/FX.h
11
wled00/FX.h
@ -102,7 +102,7 @@
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#define IS_REVERSE ((SEGMENT.options & REVERSE ) == REVERSE )
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#define IS_SELECTED ((SEGMENT.options & SELECTED ) == SELECTED )
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#define MODE_COUNT 112
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#define MODE_COUNT 113
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#define FX_MODE_STATIC 0
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#define FX_MODE_BLINK 1
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@ -216,6 +216,7 @@
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#define FX_MODE_PHASEDNOISE 109
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#define FX_MODE_FLOW 110
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#define FX_MODE_CHUNCHUN 111
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#define FX_MODE_DANCING_SHADOWS 112
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class WS2812FX {
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typedef uint16_t (WS2812FX::*mode_ptr)(void);
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@ -419,6 +420,7 @@ class WS2812FX {
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_mode[FX_MODE_PHASEDNOISE] = &WS2812FX::mode_phased_noise;
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_mode[FX_MODE_FLOW] = &WS2812FX::mode_flow;
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_mode[FX_MODE_CHUNCHUN] = &WS2812FX::mode_chunchun;
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_mode[FX_MODE_DANCING_SHADOWS] = &WS2812FX::mode_dancing_shadows;
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_brightness = DEFAULT_BRIGHTNESS;
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currentPalette = CRGBPalette16(CRGB::Black);
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@ -617,7 +619,8 @@ class WS2812FX {
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mode_sinewave(void),
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mode_phased_noise(void),
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mode_flow(void),
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mode_chunchun(void);
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mode_chunchun(void),
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mode_dancing_shadows(void);
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private:
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NeoPixelWrapper *bus;
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@ -668,6 +671,8 @@ class WS2812FX {
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CRGB twinklefox_one_twinkle(uint32_t ms, uint8_t salt, bool cat);
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CRGB pacifica_one_layer(uint16_t i, CRGBPalette16& p, uint16_t cistart, uint16_t wavescale, uint8_t bri, uint16_t ioff);
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void blendPixelColor(uint16_t n, uint32_t color, uint8_t blend);
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uint32_t _lastPaletteChange = 0;
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uint32_t _lastShow = 0;
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@ -702,7 +707,7 @@ const char JSON_mode_names[] PROGMEM = R"=====([
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"Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Glitter","Candle","Fireworks Starburst",
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"Fireworks 1D","Bouncing Balls","Sinelon","Sinelon Dual","Sinelon Rainbow","Popcorn","Drip","Plasma","Percent","Ripple Rainbow",
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"Heartbeat","Pacifica","Candle Multi", "Solid Glitter","Sunrise","Phased","Twinkleup","Noise Pal", "Sine","Phased Noise",
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"Flow","Chunchun"
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"Flow","Chunchun","Dancing Shadows"
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])=====";
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@ -620,6 +620,14 @@ void WS2812FX::fill(uint32_t c) {
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}
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}
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/*
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* Blends the specified color with the existing pixel color.
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*/
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void WS2812FX::blendPixelColor(uint16_t n, uint32_t color, uint8_t blend)
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{
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setPixelColor(n, color_blend(getPixelColor(n), color, blend));
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}
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/*
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* fade out function, higher rate = quicker fade
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*/
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