RGB Led effects experiment

rgbLed.ino

int redPin = 9;
int greenPin = 10;
int bluePin = 11;

int buttonPin = 2;
int buttonState = 0;
int lastButtonState = 0;
char cmdBuffer[2];

int counter = 0;
float hue, saturation, brightness;

int h,s,br;
int hTo,sTo,brTo;

int r,g,b;
int rTo,gTo,bTo;

int from = 0, to = 0;
int mode = 0;



void setup()                    // run once, when the sketch starts
{
  Serial.begin(57600);
  randomSeed(123);
  pinMode(buttonPin, INPUT); 
}

void loop()                    
{
  switch(mode){
  case 0: 
    break;    
  case 1: 
    HSBcyclicColor();
    break;
  case 2: 
    candleColor();
    break;
  case 3: 
    waterColor();
    break;
  case 4: 
    sirenColor();
    break;
  case 5: 
    redSiren();
    break;
  case 6: 
    policeLight();
    break;    
  case 7: 
    moodColor();
    break;   
  case 8: 
    strobeLight();
    break;    
  }
  setLedColor();
  checkButtonState();
  //checkSerial();
  setMode(1);
}

void setMode(int m){
  r=g=b=h=s=br=0;
  if (m > 8) m = 0;
  mode = m;
}

void setLedColor(){
  analogWrite(redPin, r);
  analogWrite(greenPin, g);
  analogWrite(bluePin, b);
}

void checkButtonState(){
  buttonState = digitalRead(buttonPin);
  if (buttonState != lastButtonState) {
    if (buttonState == HIGH) setMode(mode+1);
    lastButtonState = buttonState;
  }
}


void checkSerial(){
  char incomingByte;
}

void candleColor(){
  hue = random(110, 135)/1000.0;
  brightness = random(500, 1000)/1000.0;
  saturation = 1;
  hsb2rgb();
  delay(random(30, 100));
} 

void waterColor(){
  saturation = 1;
  hue = constrain(h, 130, 160)/255.0;
  hTo = constrain(hTo, 130, 160);
  
  if (hTo == h){
    brightness = random(750, 1000)/1000.0;
    hTo = random(130, 160);
    delay(random(30, 100));
  }
  HSBfade();
  delay(random(5, 10));
} 

void moodColor(){
  brightness = brTo = 1;
  saturation = sTo = 1;

  if (hTo == h) hTo = random(0, 255);
  
  HSBfade();
  delay(100);
} 


void sirenColor(){
  if (counter > 1) counter = 0;
  int colors[] = {0, 660};
  hue = colors[counter]/1000.0;
  saturation = 1;

  for(int i = 0; i<1000; i++){
    brightness = i / 1000.0;
    hsb2rgb();
    setLedColor();
  }

  for(int i = 1000; i>0; i--){
    brightness = i / 1000.0;
    hsb2rgb();
    setLedColor();
  }
  counter++;
}

void redSiren(){
  hue = 0;
  saturation = 1;
  if (br == 0) {brTo = 255;delay(100);}
  if (br == 255) brTo = 0;
  Serial.println(br);
  HSBfade();
}

void strobeLight(){
  r = g = b = 255;
  setLedColor();
  delay(10);
  r = g = b = 0;
  setLedColor();
  delay(100);
}


void policeLight(){
  b = 255;
  r = g = 0;
  setLedColor();
  delay(20);
  r = g = b = 0;
  setLedColor();
  delay(80);
  b = 255;
  setLedColor();
  delay(20);
  r = g = b = 0;
  setLedColor();
  delay(500);
}


void HSBcyclicColor(){
  
  if (counter > 1000) counter = 0;
  hue = (counter%1000)/1000.0;
  brightness = 1;
  saturation = 1;
  hsb2rgb();
  counter++;
  delay(10);
  
} 


void hsb2rgb(){
  float h2, f, p, q, t;
  if (saturation == 0) {
    r = g = b = (int) (brightness * 255.0f + 0.5f);
  } 
  else {
    h2 = (hue - (int)hue) * 6.0f;
    f = h2 - (int)(h2);
    p = brightness * (1.0f - saturation);
    q = brightness * (1.0f - saturation * f);
    t = brightness * (1.0f - (saturation * (1.0f - f)));
    switch ((int) h2) {
    case 0:
      r = (int) (brightness * 255.0f + 0.5f);
      g = (int) (t * 255.0f + 0.5f);
      b = (int) (p * 255.0f + 0.5f);
      break;
    case 1:
      r = (int) (q * 255.0f + 0.5f);
      g = (int) (brightness * 255.0f + 0.5f);
      b = (int) (p * 255.0f + 0.5f);
      break;
    case 2:
      r = (int) (p * 255.0f + 0.5f);
      g = (int) (brightness * 255.0f + 0.5f);
      b = (int) (t * 255.0f + 0.5f);
      break;
    case 3:
      r = (int) (p * 255.0f + 0.5f);
      g = (int) (q * 255.0f + 0.5f);
      b = (int) (brightness * 255.0f + 0.5f);
      break;
    case 4:
      r = (int) (t * 255.0f + 0.5f);
      g = (int) (p * 255.0f + 0.5f);
      b = (int) (brightness * 255.0f + 0.5f);
      break;
    case 5:
      r = (int) (brightness * 255.0f + 0.5f);
      g = (int) (p * 255.0f + 0.5f);
      b = (int) (q * 255.0f + 0.5f);
      break;
    }
  };

}

void RGBfade(){
  if (r<rTo){r++;}; if (r>rTo){r--;}
  if (g<gTo){g++;}; if (g>gTo){g--;}
  if (b<bTo){b++;}; if (b>bTo){b--;}
}

void HSBfade(){
  h = hue * 255.0f;
  br = brightness * 255.0f;
  s = saturation * 255.0f;

  if (h<hTo){h++;}; if (h>hTo){h--;}
  if (s<sTo){s++;}; if (s>sTo){s--;}
  if (br<brTo){br++;}; if (br>brTo){br--;}
  
  hue = h/255.0f;
  saturation = s/255.0f;
  brightness = br/255.0f;  

  hsb2rgb();
}