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add popcorn effect

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This commit is contained in:
fishbone-git 2019-12-10 20:34:59 +01:00
parent 86ae11f4c4
commit c1dec16c50
2 changed files with 55 additions and 3 deletions
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49
wled00/FX.cpp
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@ -2373,4 +2373,53 @@ uint16_t WS2812FX::mode_sinelon(void) {
}
prevpos = pos;
return FRAMETIME;
}
/*
* POPCORN
*/
typedef struct Kernel {
float position;
float velocity;
int32_t color;
} kernel;
#define MAX_NUM_POPCORN 12
#define GRAVITY 0.06
uint16_t WS2812FX::mode_popcorn(void) {
uint32_t popcornColor = SEGCOLOR(0);
uint32_t bgColor = SEGCOLOR(1);
if(popcornColor == bgColor) popcornColor = color_wheel(random8());
static kernel popcorn[MAX_NUM_POPCORN];
static float coeff = 0.0f;
if(coeff == 0.0f) { // calculate the velocity coeff once (the secret sauce)
coeff = pow((float)SEGLEN, 0.5223324f) * 0.3944296f;
}
fill(SEGCOLOR(1));
uint16_t ledIndex;
for(int8_t i=0; i < MAX_NUM_POPCORN; i++) {
bool isActive = popcorn[i].position >= 0.0f;
if(isActive) { // if kernel is active, update its position
popcorn[i].position += popcorn[i].velocity;
popcorn[i].velocity -= (GRAVITY * SEGMENT.intensity/25);
ledIndex = SEGMENT.start + popcorn[i].position;
if(ledIndex >= SEGMENT.start && ledIndex <= SEGMENT.stop) setPixelColor(ledIndex, popcorn[i].color);
} else { // if kernel is inactive, randomly pop it
if(random8() < 2) { // POP!!!
popcorn[i].position = 0.0f;
popcorn[i].velocity = coeff * (random(66, 100) / 100.0f);
popcorn[i].color = popcornColor;
ledIndex = SEGMENT.start;
setPixelColor(ledIndex, popcorn[i].color);
}
}
}
return SPEED_FORMULA_L;
}

9
wled00/FX.h
View File

@ -84,7 +84,7 @@
#define IS_REVERSE ((SEGMENT.options & REVERSE ) == REVERSE )
#define IS_SELECTED ((SEGMENT.options & SELECTED) == SELECTED )
#define MODE_COUNT 89
#define MODE_COUNT 90
#define FX_MODE_STATIC 0
#define FX_MODE_BLINK 1
@ -175,6 +175,7 @@
#define FX_MODE_SPOTS_FADE 86
#define FX_MODE_BOUNCINGBALLS 87
#define FX_MODE_SINELON 88
#define FX_MODE_POPCORN 89
class WS2812FX {
@ -321,6 +322,7 @@ class WS2812FX {
_mode[FX_MODE_SPOTS_FADE] = &WS2812FX::mode_spots_fade;
_mode[FX_MODE_BOUNCINGBALLS] = &WS2812FX::mode_BouncingBalls;
_mode[FX_MODE_SINELON] = &WS2812FX::mode_sinelon;
_mode[FX_MODE_POPCORN] = &WS2812FX::mode_popcorn;
_brightness = DEFAULT_BRIGHTNESS;
currentPalette = CRGBPalette16(CRGB::Black);
@ -503,7 +505,8 @@ class WS2812FX {
mode_spots(void),
mode_spots_fade(void),
mode_BouncingBalls(void),
mode_sinelon(void);
mode_sinelon(void),
mode_popcorn(void);
private:
NeoPixelWrapper *bus;
@ -576,7 +579,7 @@ const char JSON_mode_names[] PROGMEM = R"=====([
"Two Dots","Two Areas","Circus","Halloween","Tri Chase","Tri Wipe","Tri Fade","Lightning","ICU","Multi Comet",
"Dual Scanner","Stream 2","Oscillate","Pride 2015","Juggle","Palette","Fire 2012","Colorwaves","Bpm","Fill Noise",
"Noise 1","Noise 2","Noise 3","Noise 4","Colortwinkles","Lake","Meteor","Smooth Meteor","Railway","Ripple",
"Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Bouncing Balls", "Sinelon"
"Twinklefox","Twinklecat","Halloween Eyes","Solid Pattern","Solid Pattern Tri","Spots","Spots Fade","Bouncing Balls", "Sinelon","Popcorn"
])=====";