new effects, spiral and smooth

pixelprojektor/pixelprojektor.ino

@@ -7,10 +7,35 @@
 
 #define PIN 2  //data pin for ws2812
 
-Adafruit_NeoPixel strip = Adafruit_NeoPixel(64, PIN, NEO_GRB + NEO_KHZ800);
+#define NUMPIXELS 64
+
+#define FPS 15
+
+uint8_t effect=0;
+#define EFFECT_NONE 0
+#define EFFECT_SMOOTH 1
+uint8_t movingPoint_x=3;
+uint8_t movingPoint_y=3;
+uint8_t wheelPos=0;
+#define EFFECT_SPIRAL 2
+
+
+
+Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
 
 HomieNode homieNode("pixel", "commands");
 
+uint8_t pixelR[NUMPIXELS];
+uint8_t pixelG[NUMPIXELS];
+uint8_t pixelB[NUMPIXELS];
+//write to buffer, flip with showBuffer()
+uint8_t pixelR_buffer[NUMPIXELS];
+uint8_t pixelG_buffer[NUMPIXELS];
+uint8_t pixelB_buffer[NUMPIXELS];
+
+long lastMillis=0;
+long fpsdelay=1000/FPS;
+
 int xyToPos(int x, int y){ //convert x y pixel position to matrix position
     if (y%2==0){
       return (y*8+x);
@@ -55,6 +80,169 @@ void led_random()
   strip.show();
 }
 
+
+void showBuffer()
+{
+  for (int i=0; i < strip.numPixels(); i++) {
+    pixelR[i]=pixelR_buffer[i];
+    pixelG[i]=pixelG_buffer[i];
+    pixelB[i]=pixelB_buffer[i];
+    strip.setPixelColor(i, pixelR[i], pixelG[i], pixelB[i]);
+  }
+  strip.show();
+}
+
+uint8_t getAverage(uint8_t array[NUMPIXELS], uint8_t i, int x, int y)
+{
+  uint16_t sum=0;
+  uint8_t count=0;
+  if (i>=8){ //up
+    sum+=array[i-8];
+    count++;
+  }
+  if (i<(64-8)){ //down
+    sum+=array[i+8];
+    count++;
+  }
+  if (i>=1){ //left
+    sum+=array[i-1];
+    count++;
+  }
+  if (i<(64-1)){ //right
+    sum+=array[i+1];
+    count++;
+  }
+
+  /*
+  if (i>=(8+1)){ //up left
+    sum+=array[i-8-1];
+    count++;
+  }
+  if (i<(64-8-1)){ //down left
+    sum+=array[i+8-1];
+    count++;
+  }
+  if (i>=(8-1)){ //up right
+    sum+=array[i-8+1];
+    count++;
+  }
+  if (i<(64-8+1)){ //down right
+    sum+=array[i+8+1];
+    count++;
+  }*/
+  return sum/count;
+}
+
+
+void led_smooth()
+{
+  for (int i=0; i < strip.numPixels(); i++) {
+    uint8_t avgbrightness=pixelR_buffer[i]/3+pixelG_buffer[i]/3+pixelB_buffer[i]/3;
+    pixelR_buffer[i]=0.8*pixelR[i] + 0.2*getAverage(pixelR,i, 0,0);
+    pixelG_buffer[i]=0.8*pixelG[i] + 0.2*getAverage(pixelG,i, 0,0);
+    pixelB_buffer[i]=0.8*pixelB[i] + 0.2*getAverage(pixelB,i, 0,0);
+
+  }
+  showBuffer();
+}
+
+void led_movingPoint()
+{
+  uint32_t c=wheel(wheelPos);
+  wheelPos=(wheelPos+1)%255;
+  uint8_t r = (uint8_t)(c >> 16);
+  uint8_t g = (uint8_t)(c >>  8);
+  uint8_t b = (uint8_t)c;
+
+  movingPoint_x=movingPoint_x+8+random(-random(0,1+1),random(0,1+1)+1);
+  movingPoint_y=movingPoint_y+8+random(-random(0,1+1),random(0,1+1)+1);
+  if (movingPoint_x<8){
+    movingPoint_x=8-movingPoint_x;
+  }else if (movingPoint_x>=16){
+    movingPoint_x=22-movingPoint_x;
+  }else{
+    movingPoint_x-=8;  
+  }
+
+  if (movingPoint_y<8){
+    movingPoint_y=8-movingPoint_y;
+  }else if (movingPoint_y>=16){
+    movingPoint_y=22-movingPoint_y;
+  }else{
+    movingPoint_y-=8;  
+  }
+  uint8_t startx=movingPoint_x;
+  uint8_t starty=movingPoint_y;
+
+  for (int i=0;i<50;i++){
+  
+    movingPoint_x=startx+8+random(-random(0,2+1),random(0,2+1)+1);
+    movingPoint_y=starty+8+random(-random(0,2+1),random(0,2+1)+1);
+    
+    if (movingPoint_x<8){
+      movingPoint_x=8-movingPoint_x;
+    }else if (movingPoint_x>=16){
+      movingPoint_x=22-movingPoint_x;
+    }else{
+      movingPoint_x-=8;  
+    }
+  
+    if (movingPoint_y<8){
+      movingPoint_y=8-movingPoint_y;
+    }else if (movingPoint_y>=16){
+      movingPoint_y=22-movingPoint_y;
+    }else{
+      movingPoint_y-=8;  
+    }
+
+
+  
+    if (pixelR[xyToPos(movingPoint_x,movingPoint_y)]<r){
+      pixelR[xyToPos(movingPoint_x,movingPoint_y)]++;
+    }else if (pixelR[xyToPos(movingPoint_x,movingPoint_y)]>r){
+      pixelR[xyToPos(movingPoint_x,movingPoint_y)]--;
+    }
+    if (pixelG[xyToPos(movingPoint_x,movingPoint_y)]<g){
+      pixelG[xyToPos(movingPoint_x,movingPoint_y)]++;
+    }else if (pixelG[xyToPos(movingPoint_x,movingPoint_y)]>g){
+      pixelG[xyToPos(movingPoint_x,movingPoint_y)]--;
+    }
+    if (pixelB[xyToPos(movingPoint_x,movingPoint_y)]<b){
+      pixelB[xyToPos(movingPoint_x,movingPoint_y)]++;
+    }else if (pixelB[xyToPos(movingPoint_x,movingPoint_y)]>b){
+      pixelB[xyToPos(movingPoint_x,movingPoint_y)]--;
+    }
+  }
+  
+  
+  //pixelR[xyToPos(movingPoint_x,movingPoint_y)]=0.5*pixelR[xyToPos(movingPoint_x,movingPoint_y)]+0.5*r;
+  //pixelG[xyToPos(movingPoint_x,movingPoint_y)]=0.5*pixelG[xyToPos(movingPoint_x,movingPoint_y)]+0.5*g;
+  //pixelB[xyToPos(movingPoint_x,movingPoint_y)]=0.5*pixelB[xyToPos(movingPoint_x,movingPoint_y)]+0.5*b;
+
+  movingPoint_x=startx;
+  movingPoint_y=starty;
+  
+}
+void bufferClear()
+{
+  for (int i=0; i < strip.numPixels(); i++) {
+    pixelR_buffer[i]=0;
+    pixelG_buffer[i]=0;
+    pixelB_buffer[i]=0;
+  }
+}
+
+void led_spiral()
+{
+  wheelPos++;
+  for (int i=0; i < strip.numPixels(); i++) {
+    strip.setPixelColor(i,wheel((wheelPos+i*10)%255));
+  }
+  strip.show();
+}
+
+
+
 uint32_t parseColor(String value){
   if (value.charAt(0)=='#'){ //solid fill
     String color=value.substring(1);
@@ -85,18 +273,33 @@ bool effectHandler(const HomieRange& range, const String& value) {
   Homie.getLogger() << "command=" << command << " parameters=" << parameters << endl;
   
   if (command.equals("fill")){
+    effect=EFFECT_NONE;
     led_fill(parseColor(parameters));
   }else if (command.equals("off")){
+    effect=EFFECT_NONE;
     led_fill(strip.Color(0, 0, 0));
   }else if (command.equals("random")){
+    effect=EFFECT_NONE;
     led_random();
   }else if (command.equals("set")){
+    effect=EFFECT_NONE;
     int x=parameters.substring(0,1).toInt();
     int y=parameters.substring(1,2).toInt();
     String cstr=parameters.substring(2,9);
     strip.setPixelColor(xyToPos(x,y), parseColor(cstr));
     strip.show();
+  }else if (command.equals("smooth")){
+    effect=EFFECT_SMOOTH;
+    bufferClear();
+    showBuffer();
+    strip.show();
+  }else if (command.equals("spiral")){
+    effect=EFFECT_SPIRAL;
+    bufferClear();
+    showBuffer();
+    strip.show();
   }
+  
 
    
   
@@ -107,6 +310,7 @@ bool pixelsHandler(const HomieRange& range, const String& value) {
   
   String remaining=value;
   int i=0;
+  effect=EFFECT_NONE;
   do{
     String current=remaining.substring(0,7);
     Homie.getLogger() << i << ":" << current << endl;
@@ -153,6 +357,22 @@ void loop() {
   Homie.loop();
   long currentMillis = millis();
   
+
+  if (lastMillis+fpsdelay<currentMillis){
+
+    switch(effect){
+      case EFFECT_SMOOTH:
+        led_movingPoint();
+        led_smooth();
+      break;
+      case EFFECT_SPIRAL:
+        led_spiral();
+      break;
+    }
+    
+    lastMillis=currentMillis;  
+  }
+  
 }